Overall: 825/5090 fields covered

ADC

0x40012400: ADC address block description

1/150 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 ADC_ISR
0x4 ADC_IER
0x8 ADC_CR
0xc ADC_CFGR1
0x10 ADC_CFGR2
0x14 ADC_SMPR
0x20 ADC_AWD1TR
0x24 ADC_AWD2TR
0x28 ADC_CHSELR
0x28 ADC_CHSELR_ALTERNATE
0x2c ADC_AWD3TR
0x40 ADC_DR
0xa0 ADC_AWD2CR
0xa4 ADC_AWD3CR
0xb4 ADC_CALFACT
0x308 ADC_CCR
Toggle registers

ADC_ISR

ADC interrupt and status register

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/10 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCRDY
rw
EOCAL
rw
AWD3
rw
AWD2
rw
AWD1
rw
OVR
rw
EOS
rw
EOC
rw
EOSMP
rw
ADRDY
rw
Toggle fields

ADRDY

Bit 0: ADC ready This bit is set by hardware after the ADC has been enabled (ADEN+1) and when the ADC reaches a state where it is ready to accept conversion requests. It is cleared by software writing 1 to it..

EOSMP

Bit 1: End of sampling flag This bit is set by hardware during the conversion, at the end of the sampling phase.It is cleared by software by programming it to 1..

EOC

Bit 2: End of conversion flag This bit is set by hardware at the end of each conversion of a channel when a new data result is available in the ADC_DR register. It is cleared by software writing 1 to it or by reading the ADC_DR register..

EOS

Bit 3: End of sequence flag This bit is set by hardware at the end of the conversion of a sequence of channels selected by the CHSEL bits. It is cleared by software writing 1 to it..

OVR

Bit 4: ADC overrun This bit is set by hardware when an overrun occurs, meaning that a new conversion has complete while the EOC flag was already set. It is cleared by software writing 1 to it..

AWD1

Bit 7: Analog watchdog 1 flag This bit is set by hardware when the converted voltage crosses the values programmed in ADC_TR1 and ADC_HR1 registers. It is cleared by software by programming it to 1..

AWD2

Bit 8: Analog watchdog 2 flag This bit is set by hardware when the converted voltage crosses the values programmed in ADC_AWD2TR and ADC_AWD2TR registers. It is cleared by software programming it it..

AWD3

Bit 9: Analog watchdog 3 flag This bit is set by hardware when the converted voltage crosses the values programmed in ADC_AWD3TR and ADC_AWD3TR registers. It is cleared by software by programming it to 1..

EOCAL

Bit 11: End Of Calibration flag This bit is set by hardware when calibration is complete. It is cleared by software writing 1 to it..

CCRDY

Bit 13: Channel Configuration Ready flag This flag bit is set by hardware when the channel configuration is applied after programming to ADC_CHSELR register or changing CHSELRMOD or SCANDIR. It is cleared by software by programming it to it. Note: When the software configures the channels (by programming ADC_CHSELR or changing CHSELRMOD or SCANDIR), it must wait until the CCRDY flag rises before configuring again or starting conversions, otherwise the new configuration (or the START bit) is ignored. Once the flag is asserted, if the software needs to configure again the channels, it must clear the CCRDY flag before proceeding with a new configuration..

ADC_IER

ADC interrupt enable register

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/10 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCRDYIE
rw
EOCALIE
rw
AWD3IE
rw
AWD2IE
rw
AWD1IE
rw
OVRIE
rw
EOSIE
rw
EOCIE
rw
EOSMPIE
rw
ADRDYIE
rw
Toggle fields

ADRDYIE

Bit 0: ADC ready interrupt enable This bit is set and cleared by software to enable/disable the ADC Ready interrupt. Note: The software is allowed to write this bit only when ADSTART bit is cleared (this ensures that no conversion is ongoing)..

EOSMPIE

Bit 1: End of sampling flag interrupt enable This bit is set and cleared by software to enable/disable the end of the sampling phase interrupt. Note: The software is allowed to write this bit only when ADSTART bit is cleared (this ensures that no conversion is ongoing)..

EOCIE

Bit 2: End of conversion interrupt enable This bit is set and cleared by software to enable/disable the end of conversion interrupt. Note: The software is allowed to write this bit only when ADSTART bit is cleared (this ensures that no conversion is ongoing)..

EOSIE

Bit 3: End of conversion sequence interrupt enable This bit is set and cleared by software to enable/disable the end of sequence of conversions interrupt. Note: The software is allowed to write this bit only when ADSTART bit is cleared (this ensures that no conversion is ongoing)..

OVRIE

Bit 4: Overrun interrupt enable This bit is set and cleared by software to enable/disable the overrun interrupt. Note: The software is allowed to write this bit only when ADSTART bit is cleared (this ensures that no conversion is ongoing)..

AWD1IE

Bit 7: Analog watchdog 1 interrupt enable This bit is set and cleared by software to enable/disable the analog watchdog interrupt. Note: The Software is allowed to write this bit only when ADSTART bit is cleared (this ensures that no conversion is ongoing)..

AWD2IE

Bit 8: Analog watchdog 2 interrupt enable This bit is set and cleared by software to enable/disable the analog watchdog interrupt. Note: The Software is allowed to write this bit only when ADSTART bit is cleared (this ensures that no conversion is ongoing)..

AWD3IE

Bit 9: Analog watchdog 3 interrupt enable This bit is set and cleared by software to enable/disable the analog watchdog interrupt. Note: The Software is allowed to write this bit only when ADSTART bit is cleared (this ensures that no conversion is ongoing)..

EOCALIE

Bit 11: End of calibration interrupt enable This bit is set and cleared by software to enable/disable the end of calibration interrupt. Note: The software is allowed to write this bit only when ADSTART bit is cleared (this ensures that no conversion is ongoing)..

CCRDYIE

Bit 13: Channel Configuration Ready Interrupt enable This bit is set and cleared by software to enable/disable the channel configuration ready interrupt. Note: The software is allowed to write this bit only when ADSTART bit is cleared (this ensures that no conversion is ongoing)..

ADC_CR

ADC control register

Offset: 0x8, size: 32, reset: 0x00000000, access: read-write

0/6 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ADCAL
rw
ADVREGEN
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ADSTP
rw
ADSTART
rw
ADDIS
rw
ADEN
rw
Toggle fields

ADEN

Bit 0: ADC enable command This bit is set by software to enable the ADC. The ADC is effectively ready to operate once the ADRDY flag has been set. It is cleared by hardware when the ADC is disabled, after the execution of the ADDIS command..

ADDIS

Bit 1: ADC disable command.

ADSTART

Bit 2: ADC start conversion command.

ADSTP

Bit 4: ADC stop conversion command.

ADVREGEN

Bit 28: ADC Voltage Regulator Enable.

ADCAL

Bit 31: ADC calibration This bit is set by software to start the calibration of the ADC..

ADC_CFGR1

ADC configuration register 1

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AWD1CH
rw
AWD1EN
rw
AWD1SGL
rw
CHSELRMOD
rw
DISCEN
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AUTOFF
rw
WAIT
rw
CONT
rw
OVRMOD
rw
EXTEN
rw
EXTSEL
rw
ALIGN
rw
RES
rw
SCANDIR
rw
DMACFG
rw
DMAEN
rw
Toggle fields

DMAEN

Bit 0: Direct memory access enable This bit is set and cleared by software to enable the generation of DMA requests. This allows the DMA controller to be used to manage automatically the converted data. For more details, refer to Section113.6.5: Managing converted data using the DMA on page1333..

DMACFG

Bit 1: Direct memory access configuration This bit is set and cleared by software to select between two DMA modes of operation and is effective only when DMAEN1=11. For more details, refer to Section113.6.5: Managing converted data using the DMA on page1333..

SCANDIR

Bit 2: Scan sequence direction This bit is set and cleared by software to select the direction in which the channels is scanned in the sequence. It is effective only if CHSELMOD bit is cleared. Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

RES

Bits 3-4: Data resolution These bits are written by software to select the resolution of the conversion..

ALIGN

Bit 5: Data alignment This bit is set and cleared by software to select right or left alignment. Refer to Figure141: Data alignment and resolution (oversampling disabled: OVSE = 0) on page1332.

EXTSEL

Bits 6-8: External trigger selection These bits select the external event used to trigger the start of conversion (refer to Table160: External triggers for details):.

EXTEN

Bits 10-11: External trigger enable and polarity selection These bits are set and cleared by software to select the external trigger polarity and enable the trigger..

OVRMOD

Bit 12: Overrun management mode This bit is set and cleared by software and configure the way data overruns are managed..

CONT

Bit 13: Single / continuous conversion mode This bit is set and cleared by software. If it is set, conversion takes place continuously until it is cleared. Note: It is not possible to have both discontinuous mode and continuous mode enabled: it is forbidden to set both bits DISCEN1=11 and CONT1=11..

WAIT

Bit 14: Wait conversion mode This bit is set and cleared by software to enable/disable wait conversion mode.<sup>.</sup>.

AUTOFF

Bit 15: Auto-off mode This bit is set and cleared by software to enable/disable auto-off mode.<sup>.</sup>.

DISCEN

Bit 16: Discontinuous mode This bit is set and cleared by software to enable/disable discontinuous mode. Note: It is not possible to have both discontinuous mode and continuous mode enabled: it is forbidden to set both bits DISCEN1=11 and CONT1=11..

CHSELRMOD

Bit 21: Mode selection of the ADC_CHSELR register This bit is set and cleared by software to control the ADC_CHSELR feature: Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

AWD1SGL

Bit 22: Enable the watchdog on a single channel or on all channels This bit is set and cleared by software to enable the analog watchdog on the channel identified by the AWDCH[4:0] bits or on all the channels.

AWD1EN

Bit 23: Analog watchdog enable This bit is set and cleared by software..

AWD1CH

Bits 26-30: Analog watchdog channel selection These bits are set and cleared by software. They select the input channel to be guarded by the analog watchdog. ..... Others: Reserved Note: The channel selected by the AWDCH[4:0] bits must be also set into the CHSELR register..

ADC_CFGR2

ADC configuration register 2

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

0/6 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CKMODE
rw
LFTRIG
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TOVS
rw
OVSS
rw
OVSR
rw
OVSE
rw
Toggle fields

OVSE

Bit 0: Oversampler Enable This bit is set and cleared by software. Note: The software is allowed to write this bit only when ADEN bit is cleared..

OVSR

Bits 2-4: Oversampling ratio This bit filed defines the number of oversampling ratio. Note: The software is allowed to write this bit only when ADEN bit is cleared..

OVSS

Bits 5-8: Oversampling shift This bit is set and cleared by software. Others: Reserved Note: The software is allowed to write this bit only when ADEN bit is cleared..

TOVS

Bit 9: Triggered Oversampling This bit is set and cleared by software. Note: The software is allowed to write this bit only when ADEN bit is cleared..

LFTRIG

Bit 29: Low frequency trigger mode enable This bit is set and cleared by software. Note: The software is allowed to write this bit only when ADEN bit is cleared..

CKMODE

Bits 30-31: ADC clock mode These bits are set and cleared by software to define how the analog ADC is clocked: In all synchronous clock modes, there is no jitter in the delay from a timer trigger to the start of a conversion. Note: The software is allowed to write these bits only when the ADC is disabled (ADCAL1=10, ADSTART1=10, ADSTP1=10, ADDIS1=10 and ADEN1=10)..

ADC_SMPR

ADC sampling time register

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/22 fields covered.

Toggle fields

SMP1

Bits 0-2: Sampling time selection 1 These bits are written by software to select the sampling time that applies to all channels. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

SMP2

Bits 4-6: Sampling time selection 2 These bits are written by software to select the sampling time that applies to all channels. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

SMPSEL0

Bit 8: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SMPSEL1

Bit 9: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SMPSEL2

Bit 10: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SMPSEL3

Bit 11: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SMPSEL4

Bit 12: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SMPSEL5

Bit 13: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SMPSEL6

Bit 14: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SMPSEL7

Bit 15: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SMPSEL8

Bit 16: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SMPSEL9

Bit 17: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SMPSEL10

Bit 18: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SMPSEL11

Bit 19: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SMPSEL12

Bit 20: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SMPSEL13

Bit 21: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SMPSEL14

Bit 22: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SMPSEL15

Bit 23: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SMPSEL16

Bit 24: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SMPSEL17

Bit 25: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SMPSEL18

Bit 26: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SMPSEL19

Bit 27: Channel-x sampling time selection (x1=119 to 0) These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

ADC_AWD1TR

ADC watchdog threshold register

Offset: 0x20, size: 32, reset: 0x0FFF0000, access: Unspecified

0/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
HT1
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LT1
rw
Toggle fields

LT1

Bits 0-11: Analog watchdog 1 lower threshold These bits are written by software to define the lower threshold for the analog watchdog. Refer to Section113.8: Analog window watchdogs on page1337..

HT1

Bits 16-27: Analog watchdog 1 higher threshold These bits are written by software to define the higher threshold for the analog watchdog. Refer to Section113.8: Analog window watchdogs on page1337..

ADC_AWD2TR

ADC watchdog threshold register

Offset: 0x24, size: 32, reset: 0x0FFF0000, access: Unspecified

0/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
HT2
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LT2
rw
Toggle fields

LT2

Bits 0-11: Analog watchdog 2 lower threshold These bits are written by software to define the lower threshold for the analog watchdog. Refer to Section113.8: Analog window watchdogs on page1337..

HT2

Bits 16-27: Analog watchdog 2 higher threshold These bits are written by software to define the higher threshold for the analog watchdog. Refer to Section113.8: Analog window watchdogs on page1337..

ADC_CHSELR

ADC channel selection register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/20 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CHSEL19
rw
CHSEL18
rw
CHSEL17
rw
CHSEL16
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CHSEL15
rw
CHSEL14
rw
CHSEL13
rw
CHSEL12
rw
CHSEL11
rw
CHSEL10
rw
CHSEL9
rw
CHSEL8
rw
CHSEL7
rw
CHSEL6
rw
CHSEL5
rw
CHSEL4
rw
CHSEL3
rw
CHSEL2
rw
CHSEL1
rw
CHSEL0
rw
Toggle fields

CHSEL0

Bit 0: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

CHSEL1

Bit 1: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

CHSEL2

Bit 2: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

CHSEL3

Bit 3: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

CHSEL4

Bit 4: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

CHSEL5

Bit 5: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

CHSEL6

Bit 6: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

CHSEL7

Bit 7: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

CHSEL8

Bit 8: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

CHSEL9

Bit 9: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

CHSEL10

Bit 10: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

CHSEL11

Bit 11: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

CHSEL12

Bit 12: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

CHSEL13

Bit 13: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

CHSEL14

Bit 14: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

CHSEL15

Bit 15: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

CHSEL16

Bit 16: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

CHSEL17

Bit 17: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

CHSEL18

Bit 18: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

CHSEL19

Bit 19: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing). Note: If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..

ADC_CHSELR_ALTERNATE

ADC channel selection register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SQ8
rw
SQ7
rw
SQ6
rw
SQ5
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SQ4
rw
SQ3
rw
SQ2
rw
SQ1
rw
Toggle fields

SQ1

Bits 0-3: 1st conversion of the sequence These bits are programmed by software with the channel number (0...14) assigned to the 8th conversion of the sequence. 0b1111 indicates end of the sequence. When 0b1111 (end of sequence) is programmed to the lower sequence channels, these bits are ignored. Refer to SQ8[3:0] for a definition of channel selection. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SQ2

Bits 4-7: 2nd conversion of the sequence These bits are programmed by software with the channel number (0...14) assigned to the 8th conversion of the sequence. 0b1111 indicates end of the sequence. When 0b1111 (end of sequence) is programmed to the lower sequence channels, these bits are ignored. Refer to SQ8[3:0] for a definition of channel selection. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SQ3

Bits 8-11: 3rd conversion of the sequence These bits are programmed by software with the channel number (0...14) assigned to the 8th conversion of the sequence. 0b1111 indicates end of the sequence. When 0b1111 (end of sequence) is programmed to the lower sequence channels, these bits are ignored. Refer to SQ8[3:0] for a definition of channel selection. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SQ4

Bits 12-15: 4th conversion of the sequence These bits are programmed by software with the channel number (0...14) assigned to the 8th conversion of the sequence. 0b1111 indicates end of the sequence. When 0b1111 (end of sequence) is programmed to the lower sequence channels, these bits are ignored. Refer to SQ8[3:0] for a definition of channel selection. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SQ5

Bits 16-19: 5th conversion of the sequence These bits are programmed by software with the channel number (0...14) assigned to the 8th conversion of the sequence. 0b1111 indicates end of the sequence. When 0b1111 (end of sequence) is programmed to the lower sequence channels, these bits are ignored. Refer to SQ8[3:0] for a definition of channel selection. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SQ6

Bits 20-23: 6th conversion of the sequence These bits are programmed by software with the channel number (0...14) assigned to the 8th conversion of the sequence. 0b1111 indicates end of the sequence. When 0b1111 (end of sequence) is programmed to the lower sequence channels, these bits are ignored. Refer to SQ8[3:0] for a definition of channel selection. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SQ7

Bits 24-27: 7th conversion of the sequence These bits are programmed by software with the channel number (0...14) assigned to the 8th conversion of the sequence. 0b1111 indicates end of the sequence. When 0b1111 (end of sequence) is programmed to the lower sequence channels, these bits are ignored. Refer to SQ8[3:0] for a definition of channel selection. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

SQ8

Bits 28-31: 8th conversion of the sequence These bits are programmed by software with the channel number (0...14) assigned to the 8th conversion of the sequence. 0b1111 indicates the end of the sequence. When 0b1111 (end of sequence) is programmed to the lower sequence channels, these bits are ignored. ... Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

ADC_AWD3TR

ADC watchdog threshold register

Offset: 0x2c, size: 32, reset: 0x0FFF0000, access: Unspecified

0/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
HT3
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LT3
rw
Toggle fields

LT3

Bits 0-11: Analog watchdog 3lower threshold These bits are written by software to define the lower threshold for the analog watchdog. Refer to Section113.8: Analog window watchdogs on page1337..

HT3

Bits 16-27: Analog watchdog 3 higher threshold These bits are written by software to define the higher threshold for the analog watchdog. Refer to Section113.8: Analog window watchdogs on page1337..

ADC_DR

ADC data register

Offset: 0x40, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DATA
r
Toggle fields

DATA

Bits 0-15: Converted data These bits are read-only. They contain the conversion result from the last converted channel. The data are left- or right-aligned as shown in Figure141: Data alignment and resolution (oversampling disabled: OVSE = 0) on page1332. Just after a calibration is complete, DATA[6:0] contains the calibration factor..

ADC_AWD2CR

ADC analog watchdog 2 configuration register

Offset: 0xa0, size: 32, reset: 0x00000000, access: Unspecified

0/20 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AWD2CH19
rw
AWD2CH18
rw
AWD2CH17
rw
AWD2CH16
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AWD2CH15
rw
AWD2CH14
rw
AWD2CH13
rw
AWD2CH12
rw
AWD2CH11
rw
AWD2CH10
rw
AWD2CH9
rw
AWD2CH8
rw
AWD2CH7
rw
AWD2CH6
rw
AWD2CH5
rw
AWD2CH4
rw
AWD2CH3
rw
AWD2CH2
rw
AWD2CH1
rw
AWD2CH0
rw
Toggle fields

AWD2CH0

Bit 0: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

AWD2CH1

Bit 1: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

AWD2CH2

Bit 2: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

AWD2CH3

Bit 3: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

AWD2CH4

Bit 4: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

AWD2CH5

Bit 5: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

AWD2CH6

Bit 6: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

AWD2CH7

Bit 7: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

AWD2CH8

Bit 8: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

AWD2CH9

Bit 9: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

AWD2CH10

Bit 10: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

AWD2CH11

Bit 11: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

AWD2CH12

Bit 12: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

AWD2CH13

Bit 13: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

AWD2CH14

Bit 14: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

AWD2CH15

Bit 15: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

AWD2CH16

Bit 16: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

AWD2CH17

Bit 17: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

AWD2CH18

Bit 18: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

AWD2CH19

Bit 19: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

ADC_AWD3CR

ADC Analog Watchdog 3 Configuration register

Offset: 0xa4, size: 32, reset: 0x00000000, access: Unspecified

0/20 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AWD3CH19
rw
AWD3CH18
rw
AWD3CH17
rw
AWD3CH16
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AWD3CH15
rw
AWD3CH14
rw
AWD3CH13
rw
AWD3CH12
rw
AWD3CH11
rw
AWD3CH10
rw
AWD3CH9
rw
AWD3CH8
rw
AWD3CH7
rw
AWD3CH6
rw
AWD3CH5
rw
AWD3CH4
rw
AWD3CH3
rw
AWD3CH2
rw
AWD3CH1
rw
AWD3CH0
rw
Toggle fields

AWD3CH0

Bit 0: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

AWD3CH1

Bit 1: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

AWD3CH2

Bit 2: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

AWD3CH3

Bit 3: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

AWD3CH4

Bit 4: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

AWD3CH5

Bit 5: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

AWD3CH6

Bit 6: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

AWD3CH7

Bit 7: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

AWD3CH8

Bit 8: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

AWD3CH9

Bit 9: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

AWD3CH10

Bit 10: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

AWD3CH11

Bit 11: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

AWD3CH12

Bit 12: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

AWD3CH13

Bit 13: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

AWD3CH14

Bit 14: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

AWD3CH15

Bit 15: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

AWD3CH16

Bit 16: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

AWD3CH17

Bit 17: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

AWD3CH18

Bit 18: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

AWD3CH19

Bit 19: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

ADC_CALFACT

ADC calibration factor

Offset: 0xb4, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CALFACT
rw
Toggle fields

CALFACT

Bits 0-6: Calibration factor These bits are written by hardware or by software. Once a calibration is complete,1they are updated by hardware with the calibration factors. Software can write these bits with a new calibration factor. If the new calibration factor is different from the current one stored into the analog ADC, it is then applied once a new conversion is launched. Just after a calibration is complete, DATA[6:0] contains the calibration factor. Note: Software can write these bits only when ADEN=1 (ADC is enabled and no calibration is ongoing and no conversion is ongoing)..

ADC_CCR

ADC common configuration register

Offset: 0x308, size: 32, reset: 0x00000000, access: Unspecified

0/4 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
VBATEN
rw
TSEN
rw
VREFEN
rw
PRESC
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Toggle fields

PRESC

Bits 18-21: ADC prescaler Set and cleared by software to select the frequency of the clock to the ADC. Other: Reserved Note: Software is allowed to write these bits only when the ADC is disabled (ADCAL1=10, ADSTART1=10, ADSTP1=10, ADDIS1=10 and ADEN1=10)..

VREFEN

Bit 22: V<sub>REFINT</sub> enable This bit is set and cleared by software to enable/disable the V<sub>REFINT</sub>. Note: Software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

TSEN

Bit 23: Temperature sensor enable This bit is set and cleared by software to enable/disable the temperature sensor. Note: Software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing)..

VBATEN

Bit 24: V<sub>BAT</sub> enable This bit is set and cleared by software to enable/disable the V<sub>BAT</sub> channel. Note: The software is allowed to write this bit only when ADSTART1=10 (which ensures that no conversion is ongoing).

COMP1

0x40010200: COMP address block description

2/22 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 COMP1_CSR
0x4 COMP2_CSR
Toggle registers

COMP1_CSR

Comparator 1 control and status register

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

1/11 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
LOCK
rw
VALUE
r
BLANKSEL
rw
PWRMODE
rw
HYST
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
POLARITY
rw
WINOUT
rw
WINMODE
rw
INPSEL
rw
INMSEL
rw
EN
rw
Toggle fields

EN

Bit 0: Comparator 1 enable bit This bit is controlled by software (if not locked). It enables the comparator 1:.

INMSEL

Bits 4-7: Comparator 1 signal selector for inverting input INM This bitfield is controlled by software (if not locked). It selects the signal for the inverting input COMP_INM of the comparator 1: Refer to Table176: COMP1 inverting input assignment..

INPSEL

Bits 8-10: Comparator 1 signal selector for noninverting input This bitfield is controlled by software (if not locked). It selects the signal for the noninverting input COMP_INP of the comparator 1 (also see the WINMODE bit): Refer to Table175: COMP1 noninverting input assignment..

WINMODE

Bit 11: Comparator 1 noninverting input selector for window mode This bit is controlled by software (if not locked). It selects the signal for COMP_INP input of the comparator 1:.

WINOUT

Bit 14: Comparator 1 output selector This bit is controlled by software (if not locked). It selects the comparator 1 output:.

POLARITY

Bit 15: Comparator 1 polarity selector This bit is controlled by software (if not locked). It selects the comparator 1 output polarity:.

HYST

Bits 16-17: Comparator 1 hysteresis selector This bitfield is controlled by software (if not locked). It selects the hysteresis of the comparator 1:.

PWRMODE

Bits 18-19: Comparator 1 power mode selector This bitfield is controlled by software (if not locked). It selects the power consumption and as a consequence the speed of the comparator 1:.

BLANKSEL

Bits 20-24: Comparator 1 blanking source selector This bitfield is controlled by software (if not locked). It selects the blanking source: Others: Reserved, must not be used.

VALUE

Bit 30: Comparator 1 output status This bit is read-only. It reflects the level of the comparator 1 output after the polarity selector and blanking, as indicated in Figure163..

LOCK

Bit 31: COMP_CSR register lock This bit is set by software and cleared by a system reset. It locks the comparator 3 control bits. When locked, all register bits are read-only..

COMP2_CSR

Comparator 2 control and status register

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

1/11 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
LOCK
rw
VALUE
r
BLANKSEL
rw
PWRMODE
rw
HYST
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
POLARITY
rw
WINOUT
rw
WINMODE
rw
INPSEL
rw
INMSEL
rw
EN
rw
Toggle fields

EN

Bit 0: Comparator 2 enable bit This bit is controlled by software (if not locked). It enables the comparator 2:.

INMSEL

Bits 4-7: Comparator 2 signal selector for inverting input INM This bitfield is controlled by software (if not locked). It selects the signal for the inverting input COMP_INM of the comparator 2: Refer to Table178: COMP2 inverting input assignment..

INPSEL

Bits 8-9: Comparator 2 signal selector for noninverting input This bitfield is controlled by software (if not locked). It selects the signal for the noninverting input COMP_INP of the comparator 2 (also see the WINMODE bit): Refer to Table177: COMP2 noninverting input assignment..

WINMODE

Bit 11: Comparator 2 noninverting input selector for window mode This bit is controlled by software (if not locked). It selects the signal for COMP_INP input of the comparator 2:.

WINOUT

Bit 14: Comparator 2 output selector This bit is controlled by software (if not locked). It selects the comparator 2 output:.

POLARITY

Bit 15: Comparator 2 polarity selector This bit is controlled by software (if not locked). It selects the comparator 2 output polarity:.

HYST

Bits 16-17: Comparator 2 hysteresis selector This bitfield is controlled by software (if not locked). It selects the hysteresis of the comparator 2:.

PWRMODE

Bits 18-19: Comparator 2 power mode selector This bitfield is controlled by software (if not locked). It selects the power consumption and as a consequence the speed of the comparator 2:.

BLANKSEL

Bits 20-24: Comparator 2 blanking source selector This bitfield is controlled by software (if not locked). It selects the blanking source: Others: Reserved, must not be used.

VALUE

Bit 30: Comparator 2 output status This bit is read-only. It reflects the level of the comparator 2 output after the polarity selector and blanking, as indicated in Figure163..

LOCK

Bit 31: COMP_CSR register lock This bit is set by software and cleared by a system reset. It locks the comparator 3 control bits. When locked, all register bits are read-only..

CRC

0x40023000: CRC address block description

0/10 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 CRC_DR
0x4 CRC_IDR
0x8 CRC_CR
0x10 CRC_INIT
0x14 CRC_POL
Toggle registers

CRC_DR

CRC data register

Offset: 0x0, size: 32, reset: 0xFFFFFFFF, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
DR
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DR
rw
Toggle fields

DR

Bits 0-31: Data register bits This register is used to write new data to the CRC calculator. It holds the previous CRC calculation result when it is read. If the data size is less than 32 bits, the least significant bits are used to write/read the correct value..

CRC_IDR

CRC independent data register

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
IDR
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IDR
rw
Toggle fields

IDR

Bits 0-31: General-purpose 32-bit data register bits These bits can be used as a temporary storage location for four bytes. This register is not affected by CRC resets generated by the RESET bit in the CRC_CR register.

CRC_CR

CRC control register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RTYPE_OUT
rw
RTYPE_IN
rw
REV_OUT
rw
REV_IN
rw
POLYSIZE
rw
RESET
rw
Toggle fields

RESET

Bit 0: RESET bit This bit is set by software to reset the CRC calculation unit and set the data register to the value stored in the CRC_INIT register. This bit can only be set, it is automatically cleared by hardware.

POLYSIZE

Bits 3-4: Polynomial size These bits control the size of the polynomial..

REV_IN

Bits 5-6: Reverse input data This bitfield controls the reversal of the bit order of the input data.

REV_OUT

Bits 7-8: Reverse output data This bitfield controls the reversal of the bit order of the output data..

RTYPE_IN

Bit 9: Reverse type input This bit controls the reversal granularity of the input data..

RTYPE_OUT

Bit 10: Reverse type output This bit controls the reversal granularity of the output data..

CRC_INIT

CRC initial value

Offset: 0x10, size: 32, reset: 0xFFFFFFFF, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CRC_INIT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CRC_INIT
rw
Toggle fields

CRC_INIT

Bits 0-31: Programmable initial CRC value This register is used to write the CRC initial value..

CRC_POL

CRC polynomial

Offset: 0x14, size: 32, reset: 0x04C11DB7, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
POL
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
POL
rw
Toggle fields

POL

Bits 0-31: Programmable polynomial This register is used to write the coefficients of the polynomial to be used for CRC calculation. If the polynomial size is less than 32 bits, the least significant bits have to be used to program the correct value..

DAC

0x40007400: DAC address block description

3/21 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 DAC_CR
0x4 DAC_SWTRGR
0x8 DAC_DHR12R1
0xc DAC_DHR12L1
0x10 DAC_DHR8R1
0x2c DAC_DOR1
0x34 DAC_SR
0x38 DAC_CCR
0x3c DAC_MCR
0x40 DAC_SHSR1
0x48 DAC_SHHR
0x4c DAC_SHRR
Toggle registers

DAC_CR

DAC control register

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/8 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CEN1
rw
DMAUDRIE1
rw
DMAEN1
rw
MAMP1
rw
WAVE1
rw
TSEL1
rw
TEN1
rw
EN1
rw
Toggle fields

EN1

Bit 0: DAC channel1 enable This bit is set and cleared by software to enable/disable DAC channel1..

TEN1

Bit 1: DAC channel1 trigger enable This bit is set and cleared by software to enable/disable DAC channel1 trigger. Note: When software trigger is selected, the transfer from the DAC_DHR1 register to the DAC_DOR1 register takes only one dac_pclk clock cycle..

TSEL1

Bits 2-5: DAC channel1 trigger selection These bits select the external event used to trigger DAC channel1 ... Refer to the trigger selection tables in Section114.4.2: DAC pins and internal signals for details on trigger configuration and mapping. Note: Only used if bit TEN11=11 (DAC channel1 trigger enabled)..

WAVE1

Bits 6-7: DAC channel1 noise/triangle wave generation enable These bits are set and cleared by software. 1x: Triangle wave generation enabled Only used if bit TEN11=11 (DAC channel1 trigger enabled)..

MAMP1

Bits 8-11: DAC channel1 mask/amplitude selector.

DMAEN1

Bit 12: DAC channel1 DMA enable This bit is set and cleared by software..

DMAUDRIE1

Bit 13: DAC channel1 DMA Underrun Interrupt enable This bit is set and cleared by software..

CEN1

Bit 14: DAC channel1 calibration enable This bit is set and cleared by software to enable/disable DAC channel1 calibration, it can be written only if bit EN11=10 into DAC_CR (the calibration mode can be entered/exit only when the DAC channel is disabled) Otherwise, the write operation is ignored..

DAC_SWTRGR

DAC software trigger register

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SWTRIG1
w
Toggle fields

SWTRIG1

Bit 0: DAC channel1 software trigger This bit is set by software to trigger the DAC in software trigger mode. Note: This bit is cleared by hardware (one dac_pclk clock cycle later) once the DAC_DHR1 register value has been loaded into the DAC_DOR1 register..

DAC_DHR12R1

DAC channel1 12-bit right-aligned data holding register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DACC1DHR
rw
Toggle fields

DACC1DHR

Bits 0-11: DAC channel1 12-bit right-aligned data These bits are written by software. They specify 12-bit data for DAC channel1..

DAC_DHR12L1

DAC channel1 12-bit left aligned data holding register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DACC1DHR
rw
Toggle fields

DACC1DHR

Bits 4-15: DAC channel1 12-bit left-aligned data These bits are written by software. They specify 12-bit data for DAC channel1..

DAC_DHR8R1

DAC channel1 8-bit right aligned data holding register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DACC1DHR
rw
Toggle fields

DACC1DHR

Bits 0-7: DAC channel1 8-bit right-aligned data These bits are written by software. They specify 8-bit data for DAC channel1..

DAC_DOR1

DAC channel1 data output register

Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DACC1DOR
r
Toggle fields

DACC1DOR

Bits 0-11: DAC channel1 data output These bits are read-only, they contain data output for DAC channel1..

DAC_SR

DAC status register

Offset: 0x34, size: 32, reset: 0x00000000, access: Unspecified

2/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BWST1
r
CAL_FLAG1
r
DMAUDR1
rw
Toggle fields

DMAUDR1

Bit 13: DAC channel1 DMA underrun flag This bit is set by hardware and cleared by software (by writing it to 1)..

CAL_FLAG1

Bit 14: DAC channel1 calibration offset status This bit is set and cleared by hardware.

BWST1

Bit 15: DAC channel1 busy writing sample time flag This bit is systematically set just after Sample and hold mode enable and is set each time the software writes the register DAC_SHSR1, It is cleared by hardware when the write operation of DAC_SHSR1 is complete. (It takes about 3 LSI periods of synchronization)..

DAC_CCR

DAC calibration control register

Offset: 0x38, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OTRIM1
rw
Toggle fields

OTRIM1

Bits 0-4: DAC channel1 offset trimming value.

DAC_MCR

DAC mode control register

Offset: 0x3c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MODE1
rw
Toggle fields

MODE1

Bits 0-2: DAC channel1 mode These bits can be written only when the DAC is disabled and not in the calibration mode (when bit EN11=10 and bit CEN11=10 in the DAC_CR register). If EN11=11 or CEN11=11 the write operation is ignored. They can be set and cleared by software to select the DAC channel1 mode: DAC channel1 in Normal mode DAC channel1 in sample & hold mode Note: This register can be modified only when EN11=10..

DAC_SHSR1

DAC channel1 sample and hold sample time register

Offset: 0x40, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TSAMPLE1
rw
Toggle fields

TSAMPLE1

Bits 0-9: DAC channel1 sample time (only valid in Sample and hold mode) These bits can be written when the DAC channel1 is disabled or also during normal operation. in the latter case, the write can be done only when BWST1 of DAC_SR register is low, If BWST11=11, the write operation is ignored..

DAC_SHHR

DAC sample and hold time register

Offset: 0x48, size: 32, reset: 0x00010001, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
THOLD1
rw
Toggle fields

THOLD1

Bits 0-9: DAC channel1 hold time (only valid in Sample and hold mode) Hold time1=1(THOLD[9:0]) x LSI clock period Note: This register can be modified only when EN11=10..

DAC_SHRR

DAC sample and hold refresh time register

Offset: 0x4c, size: 32, reset: 0x00010001, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TREFRESH1
rw
Toggle fields

TREFRESH1

Bits 0-7: DAC channel1 refresh time (only valid in Sample and hold mode) Refresh time1=1(TREFRESH[7:0]) x LSI clock period Note: This register can be modified only when EN11=10..

DBGMCU

0x40015800: DBGMCU register block

22/41 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 DBGMCU_IDCODE
0x4 DBGMCU_CR
0x8 DBGMCU_APB1FZR
0xc DBGMCU_APB2FZR
0xfc DBGMCU_SR
0x100 DBGMCU_DBG_AUTH_HOST
0x104 DBGMCU_DBG_AUTH_DEVICE
0xfd0 DBGMCU_PIDR4
0xfe0 DBGMCU_PIDR0
0xfe4 DBGMCU_PIDR1
0xfe8 DBGMCU_PIDR2
0xfec DBGMCU_PIDR3
0xff0 DBGMCU_CIDR0
0xff4 DBGMCU_CIDR1
0xff8 DBGMCU_CIDR2
0xffc DBGMCU_CIDR3
Toggle registers

DBGMCU_IDCODE

DBGMCU device ID code register

Offset: 0x0, size: 32, reset: 0x00006000, access: Unspecified

2/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
REV_ID
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DEV_ID
r
Toggle fields

DEV_ID

Bits 0-11: Device identifier This field indicates the device ID..

REV_ID

Bits 16-31: Revision identifier This field indicates the revision of the device..

DBGMCU_CR

DBGMCU configuration register

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DBG_STANDBY
rw
DBG_STOP
rw
Toggle fields

DBG_STOP

Bit 1: Debug Stop mode Debug options in Stop mode..

DBG_STANDBY

Bit 2: Debug Standby and Shutdown modes Debug options in Standby or Shutdown mode..

DBGMCU_APB1FZR

DBGMCU APB1 freeze register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

Toggle fields

DBG_TIM2_STOP

Bit 0: TIM2 stop in debug.

DBG_TIM3_STOP

Bit 1: TIM3 stop in debug.

DBG_TIM4_STOP

Bit 2: TIM4 stop in debug.

DBG_TIM6_STOP

Bit 4: TIM6 stop in debug.

DBG_TIM7_STOP

Bit 5: TIM7 stop in debug.

DBG_RTC_STOP

Bit 10: RTC stop in debug.

DBG_WWDG_STOP

Bit 11: WWDG stop in debug.

DBG_IWDG_STOP

Bit 12: IWDG stop in debug.

DBG_I2C3_STOP

Bit 21: I2C3 SMBUS timeout stop in debug.

DBG_I2C1_STOP

Bit 22: I2C1 SMBUS timeout stop in debug.

DBG_LPTIM2_STOP

Bit 30: LPTIM2 stop in debug.

DBG_LPTIM1_STOP

Bit 31: LPTIM1 stop in debug.

DBGMCU_APB2FZR

DBG APB2 freeze register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/4 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
DBG_TIM16_STOP
rw
DBG_TIM15_STOP
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DBG_TIM14_STOP
rw
DBG_TIM1_STOP
rw
Toggle fields

DBG_TIM1_STOP

Bit 11: TIM1 stop in debug.

DBG_TIM14_STOP

Bit 15: TIM14 stop in debug.

DBG_TIM15_STOP

Bit 16: TIM15 stop in debug.

DBG_TIM16_STOP

Bit 17: TIM16 stop in debug.

DBGMCU_SR

DBGMCU status register

Offset: 0xfc, size: 32, reset: 0x00010003, access: Unspecified

4/4 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AP0_ENABLED
r
AP1_ENABLED
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AP0_PRESENT
r
AP1_PRESENT
r
Toggle fields

AP1_PRESENT

Bit 0: Identifies whether access port AP1 is present in device.

AP0_PRESENT

Bit 1: Identifies whether access port AP0 is present in device.

AP1_ENABLED

Bit 16: Identifies whether access port AP0 is open (can be accessed via the debug port) or locked (debug access to the AP is blocked).

AP0_ENABLED

Bit 17: Identifies whether access port AP0 is open (can be accessed via the debug port) or locked (debug access to the AP is blocked).

DBGMCU_DBG_AUTH_HOST

DBGMCU debug authentication mailbox host register

Offset: 0x100, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MESSAGE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MESSAGE
rw
Toggle fields

MESSAGE

Bits 0-31: Debug host to device mailbox message. During debug authentication the debug host communicates with the device via this register..

DBGMCU_DBG_AUTH_DEVICE

DBGMCU debug authentication mailbox device register

Offset: 0x104, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MESSAGE
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MESSAGE
r
Toggle fields

MESSAGE

Bits 0-31: Device to debug host mailbox message. During debug authentication the device communicates with the debug host via this register..

DBGMCU_PIDR4

DBGMCU CoreSight peripheral identity register 4

Offset: 0xfd0, size: 32, reset: 0x00000000, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SIZE
r
JEP106CON
r
Toggle fields

JEP106CON

Bits 0-3: JEP106 continuation code.

SIZE

Bits 4-7: register file size.

DBGMCU_PIDR0

DBGMCU CoreSight peripheral identity register 0

Offset: 0xfe0, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PARTNUM
r
Toggle fields

PARTNUM

Bits 0-7: part number bits [7:0].

DBGMCU_PIDR1

DBGMCU CoreSight peripheral identity register 1

Offset: 0xfe4, size: 32, reset: 0x00000000, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
JEP106ID
r
PARTNUM
r
Toggle fields

PARTNUM

Bits 0-3: part number bits [11:8].

JEP106ID

Bits 4-7: JEP106 identity code bits [3:0].

DBGMCU_PIDR2

DBGMCU CoreSight peripheral identity register 2

Offset: 0xfe8, size: 32, reset: 0x0000000A, access: Unspecified

3/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
REVISION
r
JEDEC
r
JEP106ID
r
Toggle fields

JEP106ID

Bits 0-2: JEP106 identity code bits [6:4].

JEDEC

Bit 3: JEDEC assigned value.

REVISION

Bits 4-7: component revision number.

DBGMCU_PIDR3

DBGMCU CoreSight peripheral identity register 3

Offset: 0xfec, size: 32, reset: 0x00000000, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
REVAND
r
CMOD
r
Toggle fields

CMOD

Bits 0-3: customer modified.

REVAND

Bits 4-7: metal fix version.

DBGMCU_CIDR0

DBGMCU CoreSight component identity register 0

Offset: 0xff0, size: 32, reset: 0x0000000D, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PREAMBLE
r
Toggle fields

PREAMBLE

Bits 0-7: component identification bits [7:0].

DBGMCU_CIDR1

DBGMCU CoreSight component identity register 1

Offset: 0xff4, size: 32, reset: 0x000000F0, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CLASS
r
PREAMBLE
r
Toggle fields

PREAMBLE

Bits 0-3: component identification bits [11:8].

CLASS

Bits 4-7: component identification bits [15:12] - component class.

DBGMCU_CIDR2

DBGMCU CoreSight component identity register 2

Offset: 0xff8, size: 32, reset: 0x00000005, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PREAMBLE
r
Toggle fields

PREAMBLE

Bits 0-7: component identification bits [23:16].

DBGMCU_CIDR3

DBGMCU CoreSight component identity register 3

Offset: 0xffc, size: 32, reset: 0x000000B1, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PREAMBLE
r
Toggle fields

PREAMBLE

Bits 0-7: component identification bits [31:24].

DMA1

0x40020000: DMA register bank

28/161 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 DMA_ISR
0x4 DMA_IFCR
0x8 DMA_CCR1
0xc DMA_CNDTR1
0x10 DMA_CPAR1
0x14 DMA_CMAR1
0x1c DMA_CCR2
0x20 DMA_CNDTR2
0x24 DMA_CPAR2
0x28 DMA_CMAR2
0x30 DMA_CCR3
0x34 DMA_CNDTR3
0x38 DMA_CPAR3
0x3c DMA_CMAR3
0x44 DMA_CCR4
0x48 DMA_CNDTR4
0x4c DMA_CPAR4
0x50 DMA_CMAR4
0x58 DMA_CCR5
0x5c DMA_CNDTR5
0x60 DMA_CPAR5
0x64 DMA_CMAR5
0x6c DMA_CCR6
0x70 DMA_CNDTR6
0x74 DMA_CPAR6
0x78 DMA_CMAR6
0x80 DMA_CCR7
0x84 DMA_CNDTR7
0x88 DMA_CPAR7
0x8c DMA_CMAR7
Toggle registers

DMA_ISR

DMA interrupt status register

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

28/28 fields covered.

Toggle fields

GIF1

Bit 0: Global interrupt flag for channel 1.

TCIF1

Bit 1: Transfer complete (TC) flag for channel 1.

HTIF1

Bit 2: Half transfer (HT) flag for channel 1.

TEIF1

Bit 3: Transfer error (TE) flag for channel 1.

GIF2

Bit 4: Global interrupt flag for channel 2.

TCIF2

Bit 5: Transfer complete (TC) flag for channel 2.

HTIF2

Bit 6: Half transfer (HT) flag for channel 2.

TEIF2

Bit 7: Transfer error (TE) flag for channel 2.

GIF3

Bit 8: Global interrupt flag for channel 3.

TCIF3

Bit 9: Transfer complete (TC) flag for channel 3.

HTIF3

Bit 10: Half transfer (HT) flag for channel 3.

TEIF3

Bit 11: Transfer error (TE) flag for channel 3.

GIF4

Bit 12: global interrupt flag for channel 4.

TCIF4

Bit 13: Transfer complete (TC) flag for channel 4.

HTIF4

Bit 14: Half transfer (HT) flag for channel 4.

TEIF4

Bit 15: Transfer error (TE) flag for channel 4.

GIF5

Bit 16: global interrupt flag for channel 5.

TCIF5

Bit 17: Transfer complete (TC) flag for channel 5.

HTIF5

Bit 18: Half transfer (HT) flag for channel 5.

TEIF5

Bit 19: Transfer error (TE) flag for channel 5.

GIF6

Bit 20: Global interrupt flag for channel 6.

TCIF6

Bit 21: Transfer complete (TC) flag for channel 6.

HTIF6

Bit 22: Half transfer (HT) flag for channel 6.

TEIF6

Bit 23: Transfer error (TE) flag for channel 6.

GIF7

Bit 24: Global interrupt flag for channel 7.

TCIF7

Bit 25: Transfer complete (TC) flag for channel 7.

HTIF7

Bit 26: Half transfer (HT) flag for channel 7.

TEIF7

Bit 27: Transfer error (TE) flag for channel 7.

DMA_IFCR

DMA interrupt flag clear register

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/28 fields covered.

Toggle fields

CGIF1

Bit 0: Global interrupt flag clear for channel 1.

CTCIF1

Bit 1: Transfer complete flag clear for channel 1.

CHTIF1

Bit 2: Half transfer flag clear for channel 1.

CTEIF1

Bit 3: Transfer error flag clear for channel 1.

CGIF2

Bit 4: Global interrupt flag clear for channel 2.

CTCIF2

Bit 5: Transfer complete flag clear for channel 2.

CHTIF2

Bit 6: Half transfer flag clear for channel 2.

CTEIF2

Bit 7: Transfer error flag clear for channel 2.

CGIF3

Bit 8: Global interrupt flag clear for channel 3.

CTCIF3

Bit 9: Transfer complete flag clear for channel 3.

CHTIF3

Bit 10: Half transfer flag clear for channel 3.

CTEIF3

Bit 11: Transfer error flag clear for channel 3.

CGIF4

Bit 12: Global interrupt flag clear for channel 4.

CTCIF4

Bit 13: Transfer complete flag clear for channel 4.

CHTIF4

Bit 14: Half transfer flag clear for channel 4.

CTEIF4

Bit 15: Transfer error flag clear for channel 4.

CGIF5

Bit 16: Global interrupt flag clear for channel 5.

CTCIF5

Bit 17: Transfer complete flag clear for channel 5.

CHTIF5

Bit 18: Half transfer flag clear for channel 5.

CTEIF5

Bit 19: Transfer error flag clear for channel 5.

CGIF6

Bit 20: Global interrupt flag clear for channel 6.

CTCIF6

Bit 21: Transfer complete flag clear for channel 6.

CHTIF6

Bit 22: Half transfer flag clear for channel 6.

CTEIF6

Bit 23: Transfer error flag clear for channel 6.

CGIF7

Bit 24: Global interrupt flag clear for channel 7.

CTCIF7

Bit 25: Transfer complete flag clear for channel 7.

CHTIF7

Bit 26: Half transfer flag clear for channel 7.

CTEIF7

Bit 27: Transfer error flag clear for channel 7.

DMA_CCR1

DMA channel 1 configuration register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MEM2MEM
rw
PL
rw
MSIZE
rw
PSIZE
rw
MINC
rw
PINC
rw
CIRC
rw
DIR
rw
TEIE
rw
HTIE
rw
TCIE
rw
EN
rw
Toggle fields

EN

Bit 0: Channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by1setting the CTEIFx bit of the DMA_IFCR register). Note: This bit is set and cleared by software..

TCIE

Bit 1: Transfer complete interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

HTIE

Bit 2: Half transfer interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

TEIE

Bit 3: Transfer error interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DIR

Bit 4: Data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

CIRC

Bit 5: Circular mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

PINC

Bit 6: Peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this bit identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MINC

Bit 7: Memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this bit identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PSIZE

Bits 8-9: Peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this bitfield identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MSIZE

Bits 10-11: Memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this bitfield identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PL

Bits 12-13: Priority level Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MEM2MEM

Bit 14: Memory-to-memory mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

DMA_CNDTR1

DMA channel 1 number of data to transfer register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
NDT
rw
Toggle fields

NDT

Bits 0-15: Number of data to transfer.

DMA_CPAR1

DMA channel 1 peripheral address register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PA
rw
Toggle fields

PA

Bits 0-31: Peripheral address It contains the base address of the peripheral data register from/to which the data is read/written. When PSIZE[1:0] = 01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE[1:0] = 10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory destination address if DIR = 1 and the memory source address if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination address if DIR1= 1 and the peripheral source address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CMAR1

DMA channel 1 memory address register

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MA
rw
Toggle fields

MA

Bits 0-31: Peripheral address It contains the base address of the memory from/to which the data is read/written. When MSIZE[1:0] = 01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE[1:0] = 10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory source address if DIR = 1 and the memory destination address if DIR1=10. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source address if DIR1=11 and the peripheral destination address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CCR2

DMA channel 2 configuration register

Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MEM2MEM
rw
PL
rw
MSIZE
rw
PSIZE
rw
MINC
rw
PINC
rw
CIRC
rw
DIR
rw
TEIE
rw
HTIE
rw
TCIE
rw
EN
rw
Toggle fields

EN

Bit 0: Channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by1setting the CTEIFx bit of the DMA_IFCR register). Note: This bit is set and cleared by software..

TCIE

Bit 1: Transfer complete interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

HTIE

Bit 2: Half transfer interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

TEIE

Bit 3: Transfer error interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DIR

Bit 4: Data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

CIRC

Bit 5: Circular mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

PINC

Bit 6: Peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this bit identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MINC

Bit 7: Memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this bit identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PSIZE

Bits 8-9: Peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this bitfield identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MSIZE

Bits 10-11: Memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this bitfield identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PL

Bits 12-13: Priority level Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MEM2MEM

Bit 14: Memory-to-memory mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

DMA_CNDTR2

DMA channel 2 number of data to transfer register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
NDT
rw
Toggle fields

NDT

Bits 0-15: Number of data to transfer.

DMA_CPAR2

DMA channel 2 peripheral address register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PA
rw
Toggle fields

PA

Bits 0-31: Peripheral address It contains the base address of the peripheral data register from/to which the data is read/written. When PSIZE[1:0] = 01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE[1:0] = 10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory destination address if DIR = 1 and the memory source address if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination address if DIR1= 1 and the peripheral source address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CMAR2

DMA channel 2 memory address register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MA
rw
Toggle fields

MA

Bits 0-31: Peripheral address It contains the base address of the memory from/to which the data is read/written. When MSIZE[1:0] = 01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE[1:0] = 10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory source address if DIR = 1 and the memory destination address if DIR1=10. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source address if DIR1=11 and the peripheral destination address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CCR3

DMA channel 3 configuration register

Offset: 0x30, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MEM2MEM
rw
PL
rw
MSIZE
rw
PSIZE
rw
MINC
rw
PINC
rw
CIRC
rw
DIR
rw
TEIE
rw
HTIE
rw
TCIE
rw
EN
rw
Toggle fields

EN

Bit 0: Channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by1setting the CTEIFx bit of the DMA_IFCR register). Note: This bit is set and cleared by software..

TCIE

Bit 1: Transfer complete interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

HTIE

Bit 2: Half transfer interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

TEIE

Bit 3: Transfer error interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DIR

Bit 4: Data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

CIRC

Bit 5: Circular mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

PINC

Bit 6: Peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this bit identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MINC

Bit 7: Memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this bit identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PSIZE

Bits 8-9: Peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this bitfield identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MSIZE

Bits 10-11: Memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this bitfield identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PL

Bits 12-13: Priority level Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MEM2MEM

Bit 14: Memory-to-memory mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

DMA_CNDTR3

DMA channel 3 number of data to transfer register

Offset: 0x34, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
NDT
rw
Toggle fields

NDT

Bits 0-15: Number of data to transfer.

DMA_CPAR3

DMA channel 3 peripheral address register

Offset: 0x38, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PA
rw
Toggle fields

PA

Bits 0-31: Peripheral address It contains the base address of the peripheral data register from/to which the data is read/written. When PSIZE[1:0] = 01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE[1:0] = 10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory destination address if DIR = 1 and the memory source address if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination address if DIR1= 1 and the peripheral source address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CMAR3

DMA channel 3 memory address register

Offset: 0x3c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MA
rw
Toggle fields

MA

Bits 0-31: Peripheral address It contains the base address of the memory from/to which the data is read/written. When MSIZE[1:0] = 01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE[1:0] = 10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory source address if DIR = 1 and the memory destination address if DIR1=10. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source address if DIR1=11 and the peripheral destination address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CCR4

DMA channel 4 configuration register

Offset: 0x44, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MEM2MEM
rw
PL
rw
MSIZE
rw
PSIZE
rw
MINC
rw
PINC
rw
CIRC
rw
DIR
rw
TEIE
rw
HTIE
rw
TCIE
rw
EN
rw
Toggle fields

EN

Bit 0: Channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by1setting the CTEIFx bit of the DMA_IFCR register). Note: This bit is set and cleared by software..

TCIE

Bit 1: Transfer complete interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

HTIE

Bit 2: Half transfer interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

TEIE

Bit 3: Transfer error interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DIR

Bit 4: Data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

CIRC

Bit 5: Circular mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

PINC

Bit 6: Peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this bit identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MINC

Bit 7: Memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this bit identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PSIZE

Bits 8-9: Peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this bitfield identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MSIZE

Bits 10-11: Memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this bitfield identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PL

Bits 12-13: Priority level Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MEM2MEM

Bit 14: Memory-to-memory mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

DMA_CNDTR4

DMA channel 4 number of data to transfer register

Offset: 0x48, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
NDT
rw
Toggle fields

NDT

Bits 0-15: Number of data to transfer.

DMA_CPAR4

DMA channel 4 peripheral address register

Offset: 0x4c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PA
rw
Toggle fields

PA

Bits 0-31: Peripheral address It contains the base address of the peripheral data register from/to which the data is read/written. When PSIZE[1:0] = 01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE[1:0] = 10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory destination address if DIR = 1 and the memory source address if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination address if DIR1= 1 and the peripheral source address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CMAR4

DMA channel 4 memory address register

Offset: 0x50, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MA
rw
Toggle fields

MA

Bits 0-31: Peripheral address It contains the base address of the memory from/to which the data is read/written. When MSIZE[1:0] = 01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE[1:0] = 10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory source address if DIR = 1 and the memory destination address if DIR1=10. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source address if DIR1=11 and the peripheral destination address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CCR5

DMA channel 5 configuration register

Offset: 0x58, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MEM2MEM
rw
PL
rw
MSIZE
rw
PSIZE
rw
MINC
rw
PINC
rw
CIRC
rw
DIR
rw
TEIE
rw
HTIE
rw
TCIE
rw
EN
rw
Toggle fields

EN

Bit 0: Channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by1setting the CTEIFx bit of the DMA_IFCR register). Note: This bit is set and cleared by software..

TCIE

Bit 1: Transfer complete interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

HTIE

Bit 2: Half transfer interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

TEIE

Bit 3: Transfer error interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DIR

Bit 4: Data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

CIRC

Bit 5: Circular mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

PINC

Bit 6: Peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this bit identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MINC

Bit 7: Memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this bit identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PSIZE

Bits 8-9: Peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this bitfield identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MSIZE

Bits 10-11: Memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this bitfield identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PL

Bits 12-13: Priority level Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MEM2MEM

Bit 14: Memory-to-memory mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

DMA_CNDTR5

DMA channel 5 number of data to transfer register

Offset: 0x5c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
NDT
rw
Toggle fields

NDT

Bits 0-15: Number of data to transfer.

DMA_CPAR5

DMA channel 5 peripheral address register

Offset: 0x60, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PA
rw
Toggle fields

PA

Bits 0-31: Peripheral address It contains the base address of the peripheral data register from/to which the data is read/written. When PSIZE[1:0] = 01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE[1:0] = 10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory destination address if DIR = 1 and the memory source address if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination address if DIR1= 1 and the peripheral source address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CMAR5

DMA channel 5 memory address register

Offset: 0x64, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MA
rw
Toggle fields

MA

Bits 0-31: Peripheral address It contains the base address of the memory from/to which the data is read/written. When MSIZE[1:0] = 01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE[1:0] = 10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory source address if DIR = 1 and the memory destination address if DIR1=10. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source address if DIR1=11 and the peripheral destination address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CCR6

DMA channel 6 configuration register

Offset: 0x6c, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MEM2MEM
rw
PL
rw
MSIZE
rw
PSIZE
rw
MINC
rw
PINC
rw
CIRC
rw
DIR
rw
TEIE
rw
HTIE
rw
TCIE
rw
EN
rw
Toggle fields

EN

Bit 0: Channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by1setting the CTEIFx bit of the DMA_IFCR register). Note: This bit is set and cleared by software..

TCIE

Bit 1: Transfer complete interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

HTIE

Bit 2: Half transfer interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

TEIE

Bit 3: Transfer error interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DIR

Bit 4: Data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

CIRC

Bit 5: Circular mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

PINC

Bit 6: Peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this bit identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MINC

Bit 7: Memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this bit identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PSIZE

Bits 8-9: Peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this bitfield identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MSIZE

Bits 10-11: Memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this bitfield identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PL

Bits 12-13: Priority level Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MEM2MEM

Bit 14: Memory-to-memory mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

DMA_CNDTR6

DMA channel 6 number of data to transfer register

Offset: 0x70, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
NDT
rw
Toggle fields

NDT

Bits 0-15: Number of data to transfer.

DMA_CPAR6

DMA channel 6 peripheral address register

Offset: 0x74, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PA
rw
Toggle fields

PA

Bits 0-31: Peripheral address It contains the base address of the peripheral data register from/to which the data is read/written. When PSIZE[1:0] = 01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE[1:0] = 10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory destination address if DIR = 1 and the memory source address if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination address if DIR1= 1 and the peripheral source address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CMAR6

DMA channel 6 memory address register

Offset: 0x78, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MA
rw
Toggle fields

MA

Bits 0-31: Peripheral address It contains the base address of the memory from/to which the data is read/written. When MSIZE[1:0] = 01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE[1:0] = 10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory source address if DIR = 1 and the memory destination address if DIR1=10. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source address if DIR1=11 and the peripheral destination address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CCR7

DMA channel 7 configuration register

Offset: 0x80, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MEM2MEM
rw
PL
rw
MSIZE
rw
PSIZE
rw
MINC
rw
PINC
rw
CIRC
rw
DIR
rw
TEIE
rw
HTIE
rw
TCIE
rw
EN
rw
Toggle fields

EN

Bit 0: Channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by1setting the CTEIFx bit of the DMA_IFCR register). Note: This bit is set and cleared by software..

TCIE

Bit 1: Transfer complete interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

HTIE

Bit 2: Half transfer interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

TEIE

Bit 3: Transfer error interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DIR

Bit 4: Data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

CIRC

Bit 5: Circular mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

PINC

Bit 6: Peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this bit identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MINC

Bit 7: Memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this bit identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PSIZE

Bits 8-9: Peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this bitfield identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MSIZE

Bits 10-11: Memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this bitfield identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PL

Bits 12-13: Priority level Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MEM2MEM

Bit 14: Memory-to-memory mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

DMA_CNDTR7

DMA channel 7 number of data to transfer register

Offset: 0x84, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
NDT
rw
Toggle fields

NDT

Bits 0-15: Number of data to transfer.

DMA_CPAR7

DMA channel 7 peripheral address register

Offset: 0x88, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PA
rw
Toggle fields

PA

Bits 0-31: Peripheral address It contains the base address of the peripheral data register from/to which the data is read/written. When PSIZE[1:0] = 01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE[1:0] = 10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory destination address if DIR = 1 and the memory source address if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination address if DIR1= 1 and the peripheral source address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CMAR7

DMA channel 7 memory address register

Offset: 0x8c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MA
rw
Toggle fields

MA

Bits 0-31: Peripheral address It contains the base address of the memory from/to which the data is read/written. When MSIZE[1:0] = 01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE[1:0] = 10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory source address if DIR = 1 and the memory destination address if DIR1=10. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source address if DIR1=11 and the peripheral destination address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA2

0x40020400: DMA register bank

28/161 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 DMA_ISR
0x4 DMA_IFCR
0x8 DMA_CCR1
0xc DMA_CNDTR1
0x10 DMA_CPAR1
0x14 DMA_CMAR1
0x1c DMA_CCR2
0x20 DMA_CNDTR2
0x24 DMA_CPAR2
0x28 DMA_CMAR2
0x30 DMA_CCR3
0x34 DMA_CNDTR3
0x38 DMA_CPAR3
0x3c DMA_CMAR3
0x44 DMA_CCR4
0x48 DMA_CNDTR4
0x4c DMA_CPAR4
0x50 DMA_CMAR4
0x58 DMA_CCR5
0x5c DMA_CNDTR5
0x60 DMA_CPAR5
0x64 DMA_CMAR5
0x6c DMA_CCR6
0x70 DMA_CNDTR6
0x74 DMA_CPAR6
0x78 DMA_CMAR6
0x80 DMA_CCR7
0x84 DMA_CNDTR7
0x88 DMA_CPAR7
0x8c DMA_CMAR7
Toggle registers

DMA_ISR

DMA interrupt status register

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

28/28 fields covered.

Toggle fields

GIF1

Bit 0: Global interrupt flag for channel 1.

TCIF1

Bit 1: Transfer complete (TC) flag for channel 1.

HTIF1

Bit 2: Half transfer (HT) flag for channel 1.

TEIF1

Bit 3: Transfer error (TE) flag for channel 1.

GIF2

Bit 4: Global interrupt flag for channel 2.

TCIF2

Bit 5: Transfer complete (TC) flag for channel 2.

HTIF2

Bit 6: Half transfer (HT) flag for channel 2.

TEIF2

Bit 7: Transfer error (TE) flag for channel 2.

GIF3

Bit 8: Global interrupt flag for channel 3.

TCIF3

Bit 9: Transfer complete (TC) flag for channel 3.

HTIF3

Bit 10: Half transfer (HT) flag for channel 3.

TEIF3

Bit 11: Transfer error (TE) flag for channel 3.

GIF4

Bit 12: global interrupt flag for channel 4.

TCIF4

Bit 13: Transfer complete (TC) flag for channel 4.

HTIF4

Bit 14: Half transfer (HT) flag for channel 4.

TEIF4

Bit 15: Transfer error (TE) flag for channel 4.

GIF5

Bit 16: global interrupt flag for channel 5.

TCIF5

Bit 17: Transfer complete (TC) flag for channel 5.

HTIF5

Bit 18: Half transfer (HT) flag for channel 5.

TEIF5

Bit 19: Transfer error (TE) flag for channel 5.

GIF6

Bit 20: Global interrupt flag for channel 6.

TCIF6

Bit 21: Transfer complete (TC) flag for channel 6.

HTIF6

Bit 22: Half transfer (HT) flag for channel 6.

TEIF6

Bit 23: Transfer error (TE) flag for channel 6.

GIF7

Bit 24: Global interrupt flag for channel 7.

TCIF7

Bit 25: Transfer complete (TC) flag for channel 7.

HTIF7

Bit 26: Half transfer (HT) flag for channel 7.

TEIF7

Bit 27: Transfer error (TE) flag for channel 7.

DMA_IFCR

DMA interrupt flag clear register

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/28 fields covered.

Toggle fields

CGIF1

Bit 0: Global interrupt flag clear for channel 1.

CTCIF1

Bit 1: Transfer complete flag clear for channel 1.

CHTIF1

Bit 2: Half transfer flag clear for channel 1.

CTEIF1

Bit 3: Transfer error flag clear for channel 1.

CGIF2

Bit 4: Global interrupt flag clear for channel 2.

CTCIF2

Bit 5: Transfer complete flag clear for channel 2.

CHTIF2

Bit 6: Half transfer flag clear for channel 2.

CTEIF2

Bit 7: Transfer error flag clear for channel 2.

CGIF3

Bit 8: Global interrupt flag clear for channel 3.

CTCIF3

Bit 9: Transfer complete flag clear for channel 3.

CHTIF3

Bit 10: Half transfer flag clear for channel 3.

CTEIF3

Bit 11: Transfer error flag clear for channel 3.

CGIF4

Bit 12: Global interrupt flag clear for channel 4.

CTCIF4

Bit 13: Transfer complete flag clear for channel 4.

CHTIF4

Bit 14: Half transfer flag clear for channel 4.

CTEIF4

Bit 15: Transfer error flag clear for channel 4.

CGIF5

Bit 16: Global interrupt flag clear for channel 5.

CTCIF5

Bit 17: Transfer complete flag clear for channel 5.

CHTIF5

Bit 18: Half transfer flag clear for channel 5.

CTEIF5

Bit 19: Transfer error flag clear for channel 5.

CGIF6

Bit 20: Global interrupt flag clear for channel 6.

CTCIF6

Bit 21: Transfer complete flag clear for channel 6.

CHTIF6

Bit 22: Half transfer flag clear for channel 6.

CTEIF6

Bit 23: Transfer error flag clear for channel 6.

CGIF7

Bit 24: Global interrupt flag clear for channel 7.

CTCIF7

Bit 25: Transfer complete flag clear for channel 7.

CHTIF7

Bit 26: Half transfer flag clear for channel 7.

CTEIF7

Bit 27: Transfer error flag clear for channel 7.

DMA_CCR1

DMA channel 1 configuration register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MEM2MEM
rw
PL
rw
MSIZE
rw
PSIZE
rw
MINC
rw
PINC
rw
CIRC
rw
DIR
rw
TEIE
rw
HTIE
rw
TCIE
rw
EN
rw
Toggle fields

EN

Bit 0: Channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by1setting the CTEIFx bit of the DMA_IFCR register). Note: This bit is set and cleared by software..

TCIE

Bit 1: Transfer complete interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

HTIE

Bit 2: Half transfer interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

TEIE

Bit 3: Transfer error interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DIR

Bit 4: Data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

CIRC

Bit 5: Circular mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

PINC

Bit 6: Peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this bit identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MINC

Bit 7: Memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this bit identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PSIZE

Bits 8-9: Peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this bitfield identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MSIZE

Bits 10-11: Memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this bitfield identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PL

Bits 12-13: Priority level Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MEM2MEM

Bit 14: Memory-to-memory mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

DMA_CNDTR1

DMA channel 1 number of data to transfer register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
NDT
rw
Toggle fields

NDT

Bits 0-15: Number of data to transfer.

DMA_CPAR1

DMA channel 1 peripheral address register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PA
rw
Toggle fields

PA

Bits 0-31: Peripheral address It contains the base address of the peripheral data register from/to which the data is read/written. When PSIZE[1:0] = 01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE[1:0] = 10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory destination address if DIR = 1 and the memory source address if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination address if DIR1= 1 and the peripheral source address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CMAR1

DMA channel 1 memory address register

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MA
rw
Toggle fields

MA

Bits 0-31: Peripheral address It contains the base address of the memory from/to which the data is read/written. When MSIZE[1:0] = 01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE[1:0] = 10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory source address if DIR = 1 and the memory destination address if DIR1=10. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source address if DIR1=11 and the peripheral destination address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CCR2

DMA channel 2 configuration register

Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MEM2MEM
rw
PL
rw
MSIZE
rw
PSIZE
rw
MINC
rw
PINC
rw
CIRC
rw
DIR
rw
TEIE
rw
HTIE
rw
TCIE
rw
EN
rw
Toggle fields

EN

Bit 0: Channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by1setting the CTEIFx bit of the DMA_IFCR register). Note: This bit is set and cleared by software..

TCIE

Bit 1: Transfer complete interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

HTIE

Bit 2: Half transfer interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

TEIE

Bit 3: Transfer error interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DIR

Bit 4: Data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

CIRC

Bit 5: Circular mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

PINC

Bit 6: Peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this bit identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MINC

Bit 7: Memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this bit identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PSIZE

Bits 8-9: Peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this bitfield identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MSIZE

Bits 10-11: Memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this bitfield identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PL

Bits 12-13: Priority level Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MEM2MEM

Bit 14: Memory-to-memory mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

DMA_CNDTR2

DMA channel 2 number of data to transfer register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
NDT
rw
Toggle fields

NDT

Bits 0-15: Number of data to transfer.

DMA_CPAR2

DMA channel 2 peripheral address register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PA
rw
Toggle fields

PA

Bits 0-31: Peripheral address It contains the base address of the peripheral data register from/to which the data is read/written. When PSIZE[1:0] = 01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE[1:0] = 10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory destination address if DIR = 1 and the memory source address if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination address if DIR1= 1 and the peripheral source address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CMAR2

DMA channel 2 memory address register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MA
rw
Toggle fields

MA

Bits 0-31: Peripheral address It contains the base address of the memory from/to which the data is read/written. When MSIZE[1:0] = 01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE[1:0] = 10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory source address if DIR = 1 and the memory destination address if DIR1=10. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source address if DIR1=11 and the peripheral destination address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CCR3

DMA channel 3 configuration register

Offset: 0x30, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MEM2MEM
rw
PL
rw
MSIZE
rw
PSIZE
rw
MINC
rw
PINC
rw
CIRC
rw
DIR
rw
TEIE
rw
HTIE
rw
TCIE
rw
EN
rw
Toggle fields

EN

Bit 0: Channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by1setting the CTEIFx bit of the DMA_IFCR register). Note: This bit is set and cleared by software..

TCIE

Bit 1: Transfer complete interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

HTIE

Bit 2: Half transfer interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

TEIE

Bit 3: Transfer error interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DIR

Bit 4: Data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

CIRC

Bit 5: Circular mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

PINC

Bit 6: Peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this bit identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MINC

Bit 7: Memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this bit identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PSIZE

Bits 8-9: Peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this bitfield identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MSIZE

Bits 10-11: Memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this bitfield identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PL

Bits 12-13: Priority level Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MEM2MEM

Bit 14: Memory-to-memory mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

DMA_CNDTR3

DMA channel 3 number of data to transfer register

Offset: 0x34, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
NDT
rw
Toggle fields

NDT

Bits 0-15: Number of data to transfer.

DMA_CPAR3

DMA channel 3 peripheral address register

Offset: 0x38, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PA
rw
Toggle fields

PA

Bits 0-31: Peripheral address It contains the base address of the peripheral data register from/to which the data is read/written. When PSIZE[1:0] = 01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE[1:0] = 10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory destination address if DIR = 1 and the memory source address if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination address if DIR1= 1 and the peripheral source address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CMAR3

DMA channel 3 memory address register

Offset: 0x3c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MA
rw
Toggle fields

MA

Bits 0-31: Peripheral address It contains the base address of the memory from/to which the data is read/written. When MSIZE[1:0] = 01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE[1:0] = 10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory source address if DIR = 1 and the memory destination address if DIR1=10. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source address if DIR1=11 and the peripheral destination address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CCR4

DMA channel 4 configuration register

Offset: 0x44, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MEM2MEM
rw
PL
rw
MSIZE
rw
PSIZE
rw
MINC
rw
PINC
rw
CIRC
rw
DIR
rw
TEIE
rw
HTIE
rw
TCIE
rw
EN
rw
Toggle fields

EN

Bit 0: Channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by1setting the CTEIFx bit of the DMA_IFCR register). Note: This bit is set and cleared by software..

TCIE

Bit 1: Transfer complete interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

HTIE

Bit 2: Half transfer interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

TEIE

Bit 3: Transfer error interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DIR

Bit 4: Data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

CIRC

Bit 5: Circular mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

PINC

Bit 6: Peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this bit identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MINC

Bit 7: Memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this bit identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PSIZE

Bits 8-9: Peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this bitfield identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MSIZE

Bits 10-11: Memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this bitfield identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PL

Bits 12-13: Priority level Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MEM2MEM

Bit 14: Memory-to-memory mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

DMA_CNDTR4

DMA channel 4 number of data to transfer register

Offset: 0x48, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
NDT
rw
Toggle fields

NDT

Bits 0-15: Number of data to transfer.

DMA_CPAR4

DMA channel 4 peripheral address register

Offset: 0x4c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PA
rw
Toggle fields

PA

Bits 0-31: Peripheral address It contains the base address of the peripheral data register from/to which the data is read/written. When PSIZE[1:0] = 01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE[1:0] = 10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory destination address if DIR = 1 and the memory source address if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination address if DIR1= 1 and the peripheral source address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CMAR4

DMA channel 4 memory address register

Offset: 0x50, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MA
rw
Toggle fields

MA

Bits 0-31: Peripheral address It contains the base address of the memory from/to which the data is read/written. When MSIZE[1:0] = 01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE[1:0] = 10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory source address if DIR = 1 and the memory destination address if DIR1=10. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source address if DIR1=11 and the peripheral destination address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CCR5

DMA channel 5 configuration register

Offset: 0x58, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MEM2MEM
rw
PL
rw
MSIZE
rw
PSIZE
rw
MINC
rw
PINC
rw
CIRC
rw
DIR
rw
TEIE
rw
HTIE
rw
TCIE
rw
EN
rw
Toggle fields

EN

Bit 0: Channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by1setting the CTEIFx bit of the DMA_IFCR register). Note: This bit is set and cleared by software..

TCIE

Bit 1: Transfer complete interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

HTIE

Bit 2: Half transfer interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

TEIE

Bit 3: Transfer error interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DIR

Bit 4: Data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

CIRC

Bit 5: Circular mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

PINC

Bit 6: Peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this bit identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MINC

Bit 7: Memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this bit identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PSIZE

Bits 8-9: Peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this bitfield identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MSIZE

Bits 10-11: Memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this bitfield identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PL

Bits 12-13: Priority level Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MEM2MEM

Bit 14: Memory-to-memory mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

DMA_CNDTR5

DMA channel 5 number of data to transfer register

Offset: 0x5c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
NDT
rw
Toggle fields

NDT

Bits 0-15: Number of data to transfer.

DMA_CPAR5

DMA channel 5 peripheral address register

Offset: 0x60, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PA
rw
Toggle fields

PA

Bits 0-31: Peripheral address It contains the base address of the peripheral data register from/to which the data is read/written. When PSIZE[1:0] = 01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE[1:0] = 10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory destination address if DIR = 1 and the memory source address if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination address if DIR1= 1 and the peripheral source address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CMAR5

DMA channel 5 memory address register

Offset: 0x64, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MA
rw
Toggle fields

MA

Bits 0-31: Peripheral address It contains the base address of the memory from/to which the data is read/written. When MSIZE[1:0] = 01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE[1:0] = 10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory source address if DIR = 1 and the memory destination address if DIR1=10. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source address if DIR1=11 and the peripheral destination address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CCR6

DMA channel 6 configuration register

Offset: 0x6c, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MEM2MEM
rw
PL
rw
MSIZE
rw
PSIZE
rw
MINC
rw
PINC
rw
CIRC
rw
DIR
rw
TEIE
rw
HTIE
rw
TCIE
rw
EN
rw
Toggle fields

EN

Bit 0: Channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by1setting the CTEIFx bit of the DMA_IFCR register). Note: This bit is set and cleared by software..

TCIE

Bit 1: Transfer complete interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

HTIE

Bit 2: Half transfer interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

TEIE

Bit 3: Transfer error interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DIR

Bit 4: Data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

CIRC

Bit 5: Circular mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

PINC

Bit 6: Peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this bit identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MINC

Bit 7: Memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this bit identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PSIZE

Bits 8-9: Peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this bitfield identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MSIZE

Bits 10-11: Memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this bitfield identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PL

Bits 12-13: Priority level Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MEM2MEM

Bit 14: Memory-to-memory mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

DMA_CNDTR6

DMA channel 6 number of data to transfer register

Offset: 0x70, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
NDT
rw
Toggle fields

NDT

Bits 0-15: Number of data to transfer.

DMA_CPAR6

DMA channel 6 peripheral address register

Offset: 0x74, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PA
rw
Toggle fields

PA

Bits 0-31: Peripheral address It contains the base address of the peripheral data register from/to which the data is read/written. When PSIZE[1:0] = 01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE[1:0] = 10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory destination address if DIR = 1 and the memory source address if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination address if DIR1= 1 and the peripheral source address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CMAR6

DMA channel 6 memory address register

Offset: 0x78, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MA
rw
Toggle fields

MA

Bits 0-31: Peripheral address It contains the base address of the memory from/to which the data is read/written. When MSIZE[1:0] = 01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE[1:0] = 10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory source address if DIR = 1 and the memory destination address if DIR1=10. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source address if DIR1=11 and the peripheral destination address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CCR7

DMA channel 7 configuration register

Offset: 0x80, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MEM2MEM
rw
PL
rw
MSIZE
rw
PSIZE
rw
MINC
rw
PINC
rw
CIRC
rw
DIR
rw
TEIE
rw
HTIE
rw
TCIE
rw
EN
rw
Toggle fields

EN

Bit 0: Channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by1setting the CTEIFx bit of the DMA_IFCR register). Note: This bit is set and cleared by software..

TCIE

Bit 1: Transfer complete interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

HTIE

Bit 2: Half transfer interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

TEIE

Bit 3: Transfer error interrupt enable Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DIR

Bit 4: Data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

CIRC

Bit 5: Circular mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

PINC

Bit 6: Peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this bit identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MINC

Bit 7: Memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this bit identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bit identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PSIZE

Bits 8-9: Peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this bitfield identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MSIZE

Bits 10-11: Memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this bitfield identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

PL

Bits 12-13: Priority level Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

MEM2MEM

Bit 14: Memory-to-memory mode Note: This bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN = 1)..

DMA_CNDTR7

DMA channel 7 number of data to transfer register

Offset: 0x84, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
NDT
rw
Toggle fields

NDT

Bits 0-15: Number of data to transfer.

DMA_CPAR7

DMA channel 7 peripheral address register

Offset: 0x88, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PA
rw
Toggle fields

PA

Bits 0-31: Peripheral address It contains the base address of the peripheral data register from/to which the data is read/written. When PSIZE[1:0] = 01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE[1:0] = 10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory destination address if DIR = 1 and the memory source address if DIR = 0. In peripheral-to-peripheral mode, this bitfield identifies the peripheral destination address if DIR1= 1 and the peripheral source address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMA_CMAR7

DMA channel 7 memory address register

Offset: 0x8c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MA
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MA
rw
Toggle fields

MA

Bits 0-31: Peripheral address It contains the base address of the memory from/to which the data is read/written. When MSIZE[1:0] = 01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE[1:0] = 10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this bitfield identifies the memory source address if DIR = 1 and the memory destination address if DIR1=10. In peripheral-to-peripheral mode, this bitfield identifies the peripheral source address if DIR1=11 and the peripheral destination address if DIR = 0. Note: This bitfield is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN = 1)..

DMAMUX

0x40020800: DMAMUX address block description

16/136 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 DMAMUX_C0CR
0x4 DMAMUX_C1CR
0x8 DMAMUX_C2CR
0xc DMAMUX_C3CR
0x10 DMAMUX_C4CR
0x14 DMAMUX_C5CR
0x18 DMAMUX_C6CR
0x1c DMAMUX_C7CR
0x20 DMAMUX_C8CR
0x24 DMAMUX_C9CR
0x28 DMAMUX_C10CR
0x2c DMAMUX_C11CR
0x80 DMAMUX_CSR
0x84 DMAMUX_CFR
0x100 DMAMUX_RG0CR
0x104 DMAMUX_RG1CR
0x108 DMAMUX_RG2CR
0x10c DMAMUX_RG3CR
0x140 DMAMUX_RGSR
0x144 DMAMUX_RGCFR
Toggle registers

DMAMUX_C0CR

DMAMUX request line multiplexer channel 0 configuration register

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SYNC_ID
rw
NBREQ
rw
SPOL
rw
SE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EGE
rw
SOIE
rw
DMAREQ_ID
rw
Toggle fields

DMAREQ_ID

Bits 0-6: DMA request identification Selects the input DMA request. See the DMAMUX table about assignments of multiplexer inputs to resources..

SOIE

Bit 8: Synchronization overrun interrupt enable.

EGE

Bit 9: Event generation enable.

SE

Bit 16: Synchronization enable.

SPOL

Bits 17-18: Synchronization polarity Defines the edge polarity of the selected synchronization input:.

NBREQ

Bits 19-23: Number of DMA requests minus 1 to forward Defines the number of DMA requests to forward to the DMA controller after a synchronization event, and/or the number of DMA requests before an output event is generated. This field must only be written when both SE and EGE bits are low..

SYNC_ID

Bits 24-28: Synchronization identification Selects the synchronization input (see Table137: DMAMUX: assignment of synchronization inputs to resources)..

DMAMUX_C1CR

DMAMUX request line multiplexer channel 1 configuration register

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SYNC_ID
rw
NBREQ
rw
SPOL
rw
SE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EGE
rw
SOIE
rw
DMAREQ_ID
rw
Toggle fields

DMAREQ_ID

Bits 0-6: DMA request identification Selects the input DMA request. See the DMAMUX table about assignments of multiplexer inputs to resources..

SOIE

Bit 8: Synchronization overrun interrupt enable.

EGE

Bit 9: Event generation enable.

SE

Bit 16: Synchronization enable.

SPOL

Bits 17-18: Synchronization polarity Defines the edge polarity of the selected synchronization input:.

NBREQ

Bits 19-23: Number of DMA requests minus 1 to forward Defines the number of DMA requests to forward to the DMA controller after a synchronization event, and/or the number of DMA requests before an output event is generated. This field must only be written when both SE and EGE bits are low..

SYNC_ID

Bits 24-28: Synchronization identification Selects the synchronization input (see Table137: DMAMUX: assignment of synchronization inputs to resources)..

DMAMUX_C2CR

DMAMUX request line multiplexer channel 2 configuration register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SYNC_ID
rw
NBREQ
rw
SPOL
rw
SE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EGE
rw
SOIE
rw
DMAREQ_ID
rw
Toggle fields

DMAREQ_ID

Bits 0-6: DMA request identification Selects the input DMA request. See the DMAMUX table about assignments of multiplexer inputs to resources..

SOIE

Bit 8: Synchronization overrun interrupt enable.

EGE

Bit 9: Event generation enable.

SE

Bit 16: Synchronization enable.

SPOL

Bits 17-18: Synchronization polarity Defines the edge polarity of the selected synchronization input:.

NBREQ

Bits 19-23: Number of DMA requests minus 1 to forward Defines the number of DMA requests to forward to the DMA controller after a synchronization event, and/or the number of DMA requests before an output event is generated. This field must only be written when both SE and EGE bits are low..

SYNC_ID

Bits 24-28: Synchronization identification Selects the synchronization input (see Table137: DMAMUX: assignment of synchronization inputs to resources)..

DMAMUX_C3CR

DMAMUX request line multiplexer channel 3 configuration register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SYNC_ID
rw
NBREQ
rw
SPOL
rw
SE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EGE
rw
SOIE
rw
DMAREQ_ID
rw
Toggle fields

DMAREQ_ID

Bits 0-6: DMA request identification Selects the input DMA request. See the DMAMUX table about assignments of multiplexer inputs to resources..

SOIE

Bit 8: Synchronization overrun interrupt enable.

EGE

Bit 9: Event generation enable.

SE

Bit 16: Synchronization enable.

SPOL

Bits 17-18: Synchronization polarity Defines the edge polarity of the selected synchronization input:.

NBREQ

Bits 19-23: Number of DMA requests minus 1 to forward Defines the number of DMA requests to forward to the DMA controller after a synchronization event, and/or the number of DMA requests before an output event is generated. This field must only be written when both SE and EGE bits are low..

SYNC_ID

Bits 24-28: Synchronization identification Selects the synchronization input (see Table137: DMAMUX: assignment of synchronization inputs to resources)..

DMAMUX_C4CR

DMAMUX request line multiplexer channel 4 configuration register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SYNC_ID
rw
NBREQ
rw
SPOL
rw
SE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EGE
rw
SOIE
rw
DMAREQ_ID
rw
Toggle fields

DMAREQ_ID

Bits 0-6: DMA request identification Selects the input DMA request. See the DMAMUX table about assignments of multiplexer inputs to resources..

SOIE

Bit 8: Synchronization overrun interrupt enable.

EGE

Bit 9: Event generation enable.

SE

Bit 16: Synchronization enable.

SPOL

Bits 17-18: Synchronization polarity Defines the edge polarity of the selected synchronization input:.

NBREQ

Bits 19-23: Number of DMA requests minus 1 to forward Defines the number of DMA requests to forward to the DMA controller after a synchronization event, and/or the number of DMA requests before an output event is generated. This field must only be written when both SE and EGE bits are low..

SYNC_ID

Bits 24-28: Synchronization identification Selects the synchronization input (see Table137: DMAMUX: assignment of synchronization inputs to resources)..

DMAMUX_C5CR

DMAMUX request line multiplexer channel 5 configuration register

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SYNC_ID
rw
NBREQ
rw
SPOL
rw
SE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EGE
rw
SOIE
rw
DMAREQ_ID
rw
Toggle fields

DMAREQ_ID

Bits 0-6: DMA request identification Selects the input DMA request. See the DMAMUX table about assignments of multiplexer inputs to resources..

SOIE

Bit 8: Synchronization overrun interrupt enable.

EGE

Bit 9: Event generation enable.

SE

Bit 16: Synchronization enable.

SPOL

Bits 17-18: Synchronization polarity Defines the edge polarity of the selected synchronization input:.

NBREQ

Bits 19-23: Number of DMA requests minus 1 to forward Defines the number of DMA requests to forward to the DMA controller after a synchronization event, and/or the number of DMA requests before an output event is generated. This field must only be written when both SE and EGE bits are low..

SYNC_ID

Bits 24-28: Synchronization identification Selects the synchronization input (see Table137: DMAMUX: assignment of synchronization inputs to resources)..

DMAMUX_C6CR

DMAMUX request line multiplexer channel 6 configuration register

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SYNC_ID
rw
NBREQ
rw
SPOL
rw
SE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EGE
rw
SOIE
rw
DMAREQ_ID
rw
Toggle fields

DMAREQ_ID

Bits 0-6: DMA request identification Selects the input DMA request. See the DMAMUX table about assignments of multiplexer inputs to resources..

SOIE

Bit 8: Synchronization overrun interrupt enable.

EGE

Bit 9: Event generation enable.

SE

Bit 16: Synchronization enable.

SPOL

Bits 17-18: Synchronization polarity Defines the edge polarity of the selected synchronization input:.

NBREQ

Bits 19-23: Number of DMA requests minus 1 to forward Defines the number of DMA requests to forward to the DMA controller after a synchronization event, and/or the number of DMA requests before an output event is generated. This field must only be written when both SE and EGE bits are low..

SYNC_ID

Bits 24-28: Synchronization identification Selects the synchronization input (see Table137: DMAMUX: assignment of synchronization inputs to resources)..

DMAMUX_C7CR

DMAMUX request line multiplexer channel 7 configuration register

Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SYNC_ID
rw
NBREQ
rw
SPOL
rw
SE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EGE
rw
SOIE
rw
DMAREQ_ID
rw
Toggle fields

DMAREQ_ID

Bits 0-6: DMA request identification Selects the input DMA request. See the DMAMUX table about assignments of multiplexer inputs to resources..

SOIE

Bit 8: Synchronization overrun interrupt enable.

EGE

Bit 9: Event generation enable.

SE

Bit 16: Synchronization enable.

SPOL

Bits 17-18: Synchronization polarity Defines the edge polarity of the selected synchronization input:.

NBREQ

Bits 19-23: Number of DMA requests minus 1 to forward Defines the number of DMA requests to forward to the DMA controller after a synchronization event, and/or the number of DMA requests before an output event is generated. This field must only be written when both SE and EGE bits are low..

SYNC_ID

Bits 24-28: Synchronization identification Selects the synchronization input (see Table137: DMAMUX: assignment of synchronization inputs to resources)..

DMAMUX_C8CR

DMAMUX request line multiplexer channel 8 configuration register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SYNC_ID
rw
NBREQ
rw
SPOL
rw
SE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EGE
rw
SOIE
rw
DMAREQ_ID
rw
Toggle fields

DMAREQ_ID

Bits 0-6: DMA request identification Selects the input DMA request. See the DMAMUX table about assignments of multiplexer inputs to resources..

SOIE

Bit 8: Synchronization overrun interrupt enable.

EGE

Bit 9: Event generation enable.

SE

Bit 16: Synchronization enable.

SPOL

Bits 17-18: Synchronization polarity Defines the edge polarity of the selected synchronization input:.

NBREQ

Bits 19-23: Number of DMA requests minus 1 to forward Defines the number of DMA requests to forward to the DMA controller after a synchronization event, and/or the number of DMA requests before an output event is generated. This field must only be written when both SE and EGE bits are low..

SYNC_ID

Bits 24-28: Synchronization identification Selects the synchronization input (see Table137: DMAMUX: assignment of synchronization inputs to resources)..

DMAMUX_C9CR

DMAMUX request line multiplexer channel 9 configuration register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SYNC_ID
rw
NBREQ
rw
SPOL
rw
SE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EGE
rw
SOIE
rw
DMAREQ_ID
rw
Toggle fields

DMAREQ_ID

Bits 0-6: DMA request identification Selects the input DMA request. See the DMAMUX table about assignments of multiplexer inputs to resources..

SOIE

Bit 8: Synchronization overrun interrupt enable.

EGE

Bit 9: Event generation enable.

SE

Bit 16: Synchronization enable.

SPOL

Bits 17-18: Synchronization polarity Defines the edge polarity of the selected synchronization input:.

NBREQ

Bits 19-23: Number of DMA requests minus 1 to forward Defines the number of DMA requests to forward to the DMA controller after a synchronization event, and/or the number of DMA requests before an output event is generated. This field must only be written when both SE and EGE bits are low..

SYNC_ID

Bits 24-28: Synchronization identification Selects the synchronization input (see Table137: DMAMUX: assignment of synchronization inputs to resources)..

DMAMUX_C10CR

DMAMUX request line multiplexer channel 10 configuration register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SYNC_ID
rw
NBREQ
rw
SPOL
rw
SE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EGE
rw
SOIE
rw
DMAREQ_ID
rw
Toggle fields

DMAREQ_ID

Bits 0-6: DMA request identification Selects the input DMA request. See the DMAMUX table about assignments of multiplexer inputs to resources..

SOIE

Bit 8: Synchronization overrun interrupt enable.

EGE

Bit 9: Event generation enable.

SE

Bit 16: Synchronization enable.

SPOL

Bits 17-18: Synchronization polarity Defines the edge polarity of the selected synchronization input:.

NBREQ

Bits 19-23: Number of DMA requests minus 1 to forward Defines the number of DMA requests to forward to the DMA controller after a synchronization event, and/or the number of DMA requests before an output event is generated. This field must only be written when both SE and EGE bits are low..

SYNC_ID

Bits 24-28: Synchronization identification Selects the synchronization input (see Table137: DMAMUX: assignment of synchronization inputs to resources)..

DMAMUX_C11CR

DMAMUX request line multiplexer channel 11 configuration register

Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SYNC_ID
rw
NBREQ
rw
SPOL
rw
SE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EGE
rw
SOIE
rw
DMAREQ_ID
rw
Toggle fields

DMAREQ_ID

Bits 0-6: DMA request identification Selects the input DMA request. See the DMAMUX table about assignments of multiplexer inputs to resources..

SOIE

Bit 8: Synchronization overrun interrupt enable.

EGE

Bit 9: Event generation enable.

SE

Bit 16: Synchronization enable.

SPOL

Bits 17-18: Synchronization polarity Defines the edge polarity of the selected synchronization input:.

NBREQ

Bits 19-23: Number of DMA requests minus 1 to forward Defines the number of DMA requests to forward to the DMA controller after a synchronization event, and/or the number of DMA requests before an output event is generated. This field must only be written when both SE and EGE bits are low..

SYNC_ID

Bits 24-28: Synchronization identification Selects the synchronization input (see Table137: DMAMUX: assignment of synchronization inputs to resources)..

DMAMUX_CSR

DMAMUX request line multiplexer interrupt channel status register

Offset: 0x80, size: 32, reset: 0x00000000, access: Unspecified

12/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SOF11
r
SOF10
r
SOF9
r
SOF8
r
SOF7
r
SOF6
r
SOF5
r
SOF4
r
SOF3
r
SOF2
r
SOF1
r
SOF0
r
Toggle fields

SOF0

Bit 0: Synchronization overrun event flag The flag is set when a synchronization event occurs on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ. The flag is cleared by writing 1 to the corresponding CSOFx bit in DMAMUX_CFR register..

SOF1

Bit 1: Synchronization overrun event flag The flag is set when a synchronization event occurs on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ. The flag is cleared by writing 1 to the corresponding CSOFx bit in DMAMUX_CFR register..

SOF2

Bit 2: Synchronization overrun event flag The flag is set when a synchronization event occurs on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ. The flag is cleared by writing 1 to the corresponding CSOFx bit in DMAMUX_CFR register..

SOF3

Bit 3: Synchronization overrun event flag The flag is set when a synchronization event occurs on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ. The flag is cleared by writing 1 to the corresponding CSOFx bit in DMAMUX_CFR register..

SOF4

Bit 4: Synchronization overrun event flag The flag is set when a synchronization event occurs on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ. The flag is cleared by writing 1 to the corresponding CSOFx bit in DMAMUX_CFR register..

SOF5

Bit 5: Synchronization overrun event flag The flag is set when a synchronization event occurs on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ. The flag is cleared by writing 1 to the corresponding CSOFx bit in DMAMUX_CFR register..

SOF6

Bit 6: Synchronization overrun event flag The flag is set when a synchronization event occurs on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ. The flag is cleared by writing 1 to the corresponding CSOFx bit in DMAMUX_CFR register..

SOF7

Bit 7: Synchronization overrun event flag The flag is set when a synchronization event occurs on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ. The flag is cleared by writing 1 to the corresponding CSOFx bit in DMAMUX_CFR register..

SOF8

Bit 8: Synchronization overrun event flag The flag is set when a synchronization event occurs on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ. The flag is cleared by writing 1 to the corresponding CSOFx bit in DMAMUX_CFR register..

SOF9

Bit 9: Synchronization overrun event flag The flag is set when a synchronization event occurs on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ. The flag is cleared by writing 1 to the corresponding CSOFx bit in DMAMUX_CFR register..

SOF10

Bit 10: Synchronization overrun event flag The flag is set when a synchronization event occurs on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ. The flag is cleared by writing 1 to the corresponding CSOFx bit in DMAMUX_CFR register..

SOF11

Bit 11: Synchronization overrun event flag The flag is set when a synchronization event occurs on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ. The flag is cleared by writing 1 to the corresponding CSOFx bit in DMAMUX_CFR register..

DMAMUX_CFR

DMAMUX request line multiplexer interrupt clear flag register

Offset: 0x84, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

Toggle fields

CSOF0

Bit 0: Clear synchronization overrun event flag Writing 1 in each bit clears the corresponding overrun flag SOFx in the DMAMUX_CSR register..

CSOF1

Bit 1: Clear synchronization overrun event flag Writing 1 in each bit clears the corresponding overrun flag SOFx in the DMAMUX_CSR register..

CSOF2

Bit 2: Clear synchronization overrun event flag Writing 1 in each bit clears the corresponding overrun flag SOFx in the DMAMUX_CSR register..

CSOF3

Bit 3: Clear synchronization overrun event flag Writing 1 in each bit clears the corresponding overrun flag SOFx in the DMAMUX_CSR register..

CSOF4

Bit 4: Clear synchronization overrun event flag Writing 1 in each bit clears the corresponding overrun flag SOFx in the DMAMUX_CSR register..

CSOF5

Bit 5: Clear synchronization overrun event flag Writing 1 in each bit clears the corresponding overrun flag SOFx in the DMAMUX_CSR register..

CSOF6

Bit 6: Clear synchronization overrun event flag Writing 1 in each bit clears the corresponding overrun flag SOFx in the DMAMUX_CSR register..

CSOF7

Bit 7: Clear synchronization overrun event flag Writing 1 in each bit clears the corresponding overrun flag SOFx in the DMAMUX_CSR register..

CSOF8

Bit 8: Clear synchronization overrun event flag Writing 1 in each bit clears the corresponding overrun flag SOFx in the DMAMUX_CSR register..

CSOF9

Bit 9: Clear synchronization overrun event flag Writing 1 in each bit clears the corresponding overrun flag SOFx in the DMAMUX_CSR register..

CSOF10

Bit 10: Clear synchronization overrun event flag Writing 1 in each bit clears the corresponding overrun flag SOFx in the DMAMUX_CSR register..

CSOF11

Bit 11: Clear synchronization overrun event flag Writing 1 in each bit clears the corresponding overrun flag SOFx in the DMAMUX_CSR register..

DMAMUX_RG0CR

DMAMUX request generator channel 0 configuration register

Offset: 0x100, size: 32, reset: 0x00000000, access: Unspecified

0/5 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
GNBREQ
rw
GPOL
rw
GE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OIE
rw
SIG_ID
rw
Toggle fields

SIG_ID

Bits 0-4: Signal identification Selects the DMA request trigger input used for the channel x of the DMA request generator.

OIE

Bit 8: Trigger overrun interrupt enable.

GE

Bit 16: DMA request generator channel x enable.

GPOL

Bits 17-18: DMA request generator trigger polarity Defines the edge polarity of the selected trigger input.

GNBREQ

Bits 19-23: Number of DMA requests to be generated (minus 1) Defines the number of DMA requests to be generated after a trigger event. The actual number of generated DMA requests is GNBREQ +1. Note: This field must be written only when GE bit is disabled..

DMAMUX_RG1CR

DMAMUX request generator channel 1 configuration register

Offset: 0x104, size: 32, reset: 0x00000000, access: Unspecified

0/5 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
GNBREQ
rw
GPOL
rw
GE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OIE
rw
SIG_ID
rw
Toggle fields

SIG_ID

Bits 0-4: Signal identification Selects the DMA request trigger input used for the channel x of the DMA request generator.

OIE

Bit 8: Trigger overrun interrupt enable.

GE

Bit 16: DMA request generator channel x enable.

GPOL

Bits 17-18: DMA request generator trigger polarity Defines the edge polarity of the selected trigger input.

GNBREQ

Bits 19-23: Number of DMA requests to be generated (minus 1) Defines the number of DMA requests to be generated after a trigger event. The actual number of generated DMA requests is GNBREQ +1. Note: This field must be written only when GE bit is disabled..

DMAMUX_RG2CR

DMAMUX request generator channel 2 configuration register

Offset: 0x108, size: 32, reset: 0x00000000, access: Unspecified

0/5 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
GNBREQ
rw
GPOL
rw
GE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OIE
rw
SIG_ID
rw
Toggle fields

SIG_ID

Bits 0-4: Signal identification Selects the DMA request trigger input used for the channel x of the DMA request generator.

OIE

Bit 8: Trigger overrun interrupt enable.

GE

Bit 16: DMA request generator channel x enable.

GPOL

Bits 17-18: DMA request generator trigger polarity Defines the edge polarity of the selected trigger input.

GNBREQ

Bits 19-23: Number of DMA requests to be generated (minus 1) Defines the number of DMA requests to be generated after a trigger event. The actual number of generated DMA requests is GNBREQ +1. Note: This field must be written only when GE bit is disabled..

DMAMUX_RG3CR

DMAMUX request generator channel 3 configuration register

Offset: 0x10c, size: 32, reset: 0x00000000, access: Unspecified

0/5 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
GNBREQ
rw
GPOL
rw
GE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OIE
rw
SIG_ID
rw
Toggle fields

SIG_ID

Bits 0-4: Signal identification Selects the DMA request trigger input used for the channel x of the DMA request generator.

OIE

Bit 8: Trigger overrun interrupt enable.

GE

Bit 16: DMA request generator channel x enable.

GPOL

Bits 17-18: DMA request generator trigger polarity Defines the edge polarity of the selected trigger input.

GNBREQ

Bits 19-23: Number of DMA requests to be generated (minus 1) Defines the number of DMA requests to be generated after a trigger event. The actual number of generated DMA requests is GNBREQ +1. Note: This field must be written only when GE bit is disabled..

DMAMUX_RGSR

DMAMUX request generator interrupt status register

Offset: 0x140, size: 32, reset: 0x00000000, access: Unspecified

4/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OF3
r
OF2
r
OF1
r
OF0
r
Toggle fields

OF0

Bit 0: Trigger overrun event flag The flag is set when a new trigger event occurs on DMA request generator channel x, before the request counter underrun (the internal request counter programmed via the GNBREQ field of the DMAMUX_RGxCR register). The flag is cleared by writing 1 to the corresponding COFx bit in the DMAMUX_RGCFR register..

OF1

Bit 1: Trigger overrun event flag The flag is set when a new trigger event occurs on DMA request generator channel x, before the request counter underrun (the internal request counter programmed via the GNBREQ field of the DMAMUX_RGxCR register). The flag is cleared by writing 1 to the corresponding COFx bit in the DMAMUX_RGCFR register..

OF2

Bit 2: Trigger overrun event flag The flag is set when a new trigger event occurs on DMA request generator channel x, before the request counter underrun (the internal request counter programmed via the GNBREQ field of the DMAMUX_RGxCR register). The flag is cleared by writing 1 to the corresponding COFx bit in the DMAMUX_RGCFR register..

OF3

Bit 3: Trigger overrun event flag The flag is set when a new trigger event occurs on DMA request generator channel x, before the request counter underrun (the internal request counter programmed via the GNBREQ field of the DMAMUX_RGxCR register). The flag is cleared by writing 1 to the corresponding COFx bit in the DMAMUX_RGCFR register..

DMAMUX_RGCFR

DMAMUX request generator interrupt clear flag register

Offset: 0x144, size: 32, reset: 0x00000000, access: Unspecified

0/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
COF3
w
COF2
w
COF1
w
COF0
w
Toggle fields

COF0

Bit 0: Clear trigger overrun event flag Writing 1 in each bit clears the corresponding overrun flag OFx in the DMAMUX_RGSR register..

COF1

Bit 1: Clear trigger overrun event flag Writing 1 in each bit clears the corresponding overrun flag OFx in the DMAMUX_RGSR register..

COF2

Bit 2: Clear trigger overrun event flag Writing 1 in each bit clears the corresponding overrun flag OFx in the DMAMUX_RGSR register..

COF3

Bit 3: Clear trigger overrun event flag Writing 1 in each bit clears the corresponding overrun flag OFx in the DMAMUX_RGSR register..

EXTI

0x40021800: EXTI register block

0/202 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 EXTI_RTSR1
0x4 EXTI_FTSR1
0x8 EXTI_SWIER1
0xc EXTI_RPR1
0x10 EXTI_FPR1
0x60 EXTI_EXTICR1
0x64 EXTI_EXTICR2
0x68 EXTI_EXTICR3
0x6c EXTI_EXTICR4
0x80 EXTI_IMR1
0x84 EXTI_EMR1
0x90 EXTI_IMR2
0x94 EXTI_EMR2
Toggle registers

EXTI_RTSR1

EXTI rising trigger selection register

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/22 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
RT21
rw
RT20
rw
RT19
rw
RT18
rw
RT17
rw
RT16
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RT15
rw
RT14
rw
RT13
rw
RT12
rw
RT11
rw
RT10
rw
RT9
rw
RT8
rw
RT7
rw
RT6
rw
RT5
rw
RT4
rw
RT3
rw
RT2
rw
RT1
rw
RT0
rw
Toggle fields

RT0

Bit 0: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT1

Bit 1: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT2

Bit 2: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT3

Bit 3: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT4

Bit 4: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT5

Bit 5: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT6

Bit 6: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT7

Bit 7: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT8

Bit 8: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT9

Bit 9: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT10

Bit 10: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT11

Bit 11: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT12

Bit 12: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT13

Bit 13: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT14

Bit 14: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT15

Bit 15: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT16

Bit 16: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT17

Bit 17: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT18

Bit 18: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT19

Bit 19: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT20

Bit 20: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RT21

Bit 21: Rising trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

EXTI_FTSR1

EXTI falling trigger selection register 1

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/22 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
FT21
rw
FT20
rw
FT19
rw
FT18
rw
FT17
rw
FT16
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
FT15
rw
FT14
rw
FT13
rw
FT12
rw
FT11
rw
FT10
rw
FT9
rw
FT8
rw
FT7
rw
FT6
rw
FT5
rw
FT4
rw
FT3
rw
FT2
rw
FT1
rw
FT0
rw
Toggle fields

FT0

Bit 0: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT1

Bit 1: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT2

Bit 2: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT3

Bit 3: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT4

Bit 4: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT5

Bit 5: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT6

Bit 6: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT7

Bit 7: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT8

Bit 8: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT9

Bit 9: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT10

Bit 10: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT11

Bit 11: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT12

Bit 12: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT13

Bit 13: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT14

Bit 14: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT15

Bit 15: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT16

Bit 16: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT17

Bit 17: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT18

Bit 18: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT19

Bit 19: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT20

Bit 20: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FT21

Bit 21: Falling trigger event configuration bit of configurable line x (x1=1211to10) Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

EXTI_SWIER1

EXTI software interrupt event register 1

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/22 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SWI21
rw
SWI20
rw
SWI19
rw
SWI18
rw
SWI17
rw
SWI16
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SWI15
rw
SWI14
rw
SWI13
rw
SWI12
rw
SWI11
rw
SWI10
rw
SWI9
rw
SWI8
rw
SWI7
rw
SWI6
rw
SWI5
rw
SWI4
rw
SWI3
rw
SWI2
rw
SWI1
rw
SWI0
rw
Toggle fields

SWI0

Bit 0: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI1

Bit 1: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI2

Bit 2: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI3

Bit 3: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI4

Bit 4: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI5

Bit 5: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI6

Bit 6: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI7

Bit 7: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI8

Bit 8: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI9

Bit 9: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI10

Bit 10: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI11

Bit 11: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI12

Bit 12: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI13

Bit 13: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI14

Bit 14: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI15

Bit 15: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI16

Bit 16: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI17

Bit 17: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI18

Bit 18: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI19

Bit 19: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI20

Bit 20: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

SWI21

Bit 21: Software rising edge event trigger on line x (x1=1211to10) Setting of any bit by software triggers a rising edge event on the corresponding line x, resulting in an interrupt, independently of EXTI_RTSR1 and EXTI_FTSR1 settings. The bits are automatically cleared by HW. Reading of any bit always returns 0. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

EXTI_RPR1

EXTI rising edge pending register 1

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/22 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
RPIF21
rw
RPIF20
rw
RPIF19
rw
RPIF18
rw
RPIF17
rw
RPIF16
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RPIF15
rw
RPIF14
rw
RPIF13
rw
RPIF12
rw
RPIF11
rw
RPIF10
rw
RPIF9
rw
RPIF8
rw
RPIF7
rw
RPIF6
rw
RPIF5
rw
RPIF4
rw
RPIF3
rw
RPIF2
rw
RPIF1
rw
RPIF0
rw
Toggle fields

RPIF0

Bit 0: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF1

Bit 1: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF2

Bit 2: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF3

Bit 3: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF4

Bit 4: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF5

Bit 5: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF6

Bit 6: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF7

Bit 7: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF8

Bit 8: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF9

Bit 9: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF10

Bit 10: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF11

Bit 11: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF12

Bit 12: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF13

Bit 13: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF14

Bit 14: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF15

Bit 15: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF16

Bit 16: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF17

Bit 17: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF18

Bit 18: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF19

Bit 19: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF20

Bit 20: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

RPIF21

Bit 21: Rising edge event pending for configurable line x (x1=1211to10) Each bit is set upon a rising edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

EXTI_FPR1

EXTI falling edge pending register 1

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

0/22 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
FPIF21
rw
FPIF20
rw
FPIF19
rw
FPIF18
rw
FPIF17
rw
FPIF16
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
FPIF15
rw
FPIF14
rw
FPIF13
rw
FPIF12
rw
FPIF11
rw
FPIF10
rw
FPIF9
rw
FPIF8
rw
FPIF7
rw
FPIF6
rw
FPIF5
rw
FPIF4
rw
FPIF3
rw
FPIF2
rw
FPIF1
rw
FPIF0
rw
Toggle fields

FPIF0

Bit 0: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF1

Bit 1: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF2

Bit 2: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF3

Bit 3: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF4

Bit 4: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF5

Bit 5: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF6

Bit 6: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF7

Bit 7: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF8

Bit 8: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF9

Bit 9: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF10

Bit 10: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF11

Bit 11: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF12

Bit 12: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF13

Bit 13: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF14

Bit 14: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF15

Bit 15: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF16

Bit 16: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF17

Bit 17: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF18

Bit 18: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF19

Bit 19: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF20

Bit 20: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

FPIF21

Bit 21: Falling edge event pending for configurable line x (x1=1211to10) Each bit is set upon a falling edge event generated by hardware or by software (through the EXTI_SWIER1 register) on the corresponding line. Each bit is cleared by writing 1 into it. Bits 18 and 19 are available only on STM32U0x3xx devices. They are reserved on STM32U031xx devices..

EXTI_EXTICR1

EXTI external interrupt selection register 1

Offset: 0x60, size: 32, reset: 0x00000000, access: Unspecified

0/4 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
EXTI3
rw
EXTI2
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EXTI1
rw
EXTI0
rw
Toggle fields

EXTI0

Bits 0-7: EXTI0 GPIO port selection These bits are written by software to select the source input for EXTI0 external interrupt. Others reserved.

EXTI1

Bits 8-15: EXTI1 GPIO port selection These bits are written by software to select the source input for EXTI1 external interrupt. Others reserved.

EXTI2

Bits 16-23: EXTI2 GPIO port selection These bits are written by software to select the source input for EXTI2 external interrupt. Others reserved.

EXTI3

Bits 24-31: EXTI3 GPIO port selection These bits are written by software to select the source input for EXTI3 external interrupt. Others reserved.

EXTI_EXTICR2

EXTI external interrupt selection register 2

Offset: 0x64, size: 32, reset: 0x00000000, access: Unspecified

0/4 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
EXTI7
rw
EXTI6
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EXTI5
rw
EXTI4
rw
Toggle fields

EXTI4

Bits 0-7: EXTI4 GPIO port selection These bits are written by software to select the source input for EXTI4 external interrupt. Others reserved.

EXTI5

Bits 8-15: EXTI5 GPIO port selection These bits are written by software to select the source input for EXTI5 external interrupt. Others reserved.

EXTI6

Bits 16-23: EXTI6 GPIO port selection These bits are written by software to select the source input for EXTI6 external interrupt. Others reserved.

EXTI7

Bits 24-31: EXTI7 GPIO port selection These bits are written by software to select the source input for EXTI7 external interrupt. Others reserved.

EXTI_EXTICR3

EXTI external interrupt selection register 3

Offset: 0x68, size: 32, reset: 0x00000000, access: Unspecified

0/4 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
EXTI11
rw
EXTI10
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EXTI9
rw
EXTI8
rw
Toggle fields

EXTI8

Bits 0-7: EXTI8 GPIO port selection These bits are written by software to select the source input for EXTI8 external interrupt. Others reserved.

EXTI9

Bits 8-15: EXTI9 GPIO port selection These bits are written by software to select the source input for EXTI9 external interrupt. Others reserved.

EXTI10

Bits 16-23: EXTI10 GPIO port selection These bits are written by software to select the source input for EXTI10 external interrupt. Others reserved.

EXTI11

Bits 24-31: EXTI11 GPIO port selection These bits are written by software to select the source input for EXTI11 external interrupt. Others reserved.

EXTI_EXTICR4

EXTI external interrupt selection register 4

Offset: 0x6c, size: 32, reset: 0x00000000, access: Unspecified

0/4 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
EXTI15
rw
EXTI14
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EXTI13
rw
EXTI12
rw
Toggle fields

EXTI12

Bits 0-7: EXTI12 GPIO port selection These bits are written by software to select the source input for EXTI12 external interrupt. Others reserved.

EXTI13

Bits 8-15: EXTI13 GPIO port selection These bits are written by software to select the source input for EXTI13 external interrupt. Others reserved.

EXTI14

Bits 16-23: EXTI14 GPIO port selection These bits are written by software to select the source input for EXTI14 external interrupt. Others reserved.

EXTI15

Bits 24-31: EXTI15 GPIO port selection These bits are written by software to select the source input for EXTI15 external interrupt. Others reserved.

EXTI_IMR1

EXTI CPU wake-up with interrupt mask register

Offset: 0x80, size: 32, reset: 0xFFF80000, access: Unspecified

0/32 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
IM31
rw
IM30
rw
IM29
rw
IM28
rw
IM27
rw
IM26
rw
IM25
rw
IM24
rw
IM23
rw
IM22
rw
IM21
rw
IM20
rw
IM19
rw
IM18
rw
IM17
rw
IM16
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IM15
rw
IM14
rw
IM13
rw
IM12
rw
IM11
rw
IM10
rw
IM9
rw
IM8
rw
IM7
rw
IM6
rw
IM5
rw
IM4
rw
IM3
rw
IM2
rw
IM1
rw
IM0
rw
Toggle fields

IM0

Bit 0: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM1

Bit 1: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM2

Bit 2: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM3

Bit 3: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM4

Bit 4: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM5

Bit 5: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM6

Bit 6: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM7

Bit 7: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM8

Bit 8: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM9

Bit 9: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM10

Bit 10: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM11

Bit 11: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM12

Bit 12: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM13

Bit 13: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM14

Bit 14: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM15

Bit 15: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM16

Bit 16: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM17

Bit 17: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM18

Bit 18: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM19

Bit 19: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM20

Bit 20: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM21

Bit 21: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM22

Bit 22: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM23

Bit 23: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM24

Bit 24: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM25

Bit 25: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM26

Bit 26: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM27

Bit 27: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM28

Bit 28: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM29

Bit 29: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM30

Bit 30: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

IM31

Bit 31: CPU wake-up with interrupt mask on line x (x1=131 to 0) Setting/clearing each bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EXTI_EMR1

EXTI CPU wake-up with event mask register

Offset: 0x84, size: 32, reset: 0x00000000, access: Unspecified

0/32 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
EM31
rw
EM30
rw
EM29
rw
EM28
rw
EM27
rw
EM26
rw
EM25
rw
EM24
rw
EM23
rw
EM22
rw
EM21
rw
EM20
rw
EM19
rw
EM18
rw
EM17
rw
EM16
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EM15
rw
EM14
rw
EM13
rw
EM12
rw
EM11
rw
EM10
rw
EM9
rw
EM8
rw
EM7
rw
EM6
rw
EM5
rw
EM4
rw
EM3
rw
EM2
rw
EM1
rw
EM0
rw
Toggle fields

EM0

Bit 0: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM1

Bit 1: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM2

Bit 2: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM3

Bit 3: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM4

Bit 4: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM5

Bit 5: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM6

Bit 6: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM7

Bit 7: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM8

Bit 8: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM9

Bit 9: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM10

Bit 10: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM11

Bit 11: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM12

Bit 12: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM13

Bit 13: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM14

Bit 14: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM15

Bit 15: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM16

Bit 16: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM17

Bit 17: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM18

Bit 18: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM19

Bit 19: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM20

Bit 20: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM21

Bit 21: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM22

Bit 22: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM23

Bit 23: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM24

Bit 24: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM25

Bit 25: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM26

Bit 26: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM27

Bit 27: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM28

Bit 28: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM29

Bit 29: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM30

Bit 30: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EM31

Bit 31: CPU wake-up with event generation mask on line x (x1=1311to10) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bits 18, 19, 22 and 26 are available only on STM32U0x3xx devices, they are reserved on STM32U031xx devices..

EXTI_IMR2

EXTI CPU wake-up with interrupt mask register

Offset: 0x90, size: 32, reset: 0xFFFFFFFF, access: Unspecified

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IM37
rw
IM36
rw
IM35
rw
IM34
rw
IM33
rw
IM32
rw
Toggle fields

IM32

Bit 0: CPU wake-up with interrupt mask on line x (x1=1371to132) Setting/clearing this bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bit IM36 is available only on STM32U0x3xx devices, it is reserved on STM32U031xx devices..

IM33

Bit 1: CPU wake-up with interrupt mask on line x (x1=1371to132) Setting/clearing this bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bit IM36 is available only on STM32U0x3xx devices, it is reserved on STM32U031xx devices..

IM34

Bit 2: CPU wake-up with interrupt mask on line x (x1=1371to132) Setting/clearing this bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bit IM36 is available only on STM32U0x3xx devices, it is reserved on STM32U031xx devices..

IM35

Bit 3: CPU wake-up with interrupt mask on line x (x1=1371to132) Setting/clearing this bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bit IM36 is available only on STM32U0x3xx devices, it is reserved on STM32U031xx devices..

IM36

Bit 4: CPU wake-up with interrupt mask on line x (x1=1371to132) Setting/clearing this bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bit IM36 is available only on STM32U0x3xx devices, it is reserved on STM32U031xx devices..

IM37

Bit 5: CPU wake-up with interrupt mask on line x (x1=1371to132) Setting/clearing this bit unmasks/masks the CPU wake-up with interrupt, by an event on the corresponding line. Bit IM36 is available only on STM32U0x3xx devices, it is reserved on STM32U031xx devices..

EXTI_EMR2

EXTI CPU wake-up with event mask register

Offset: 0x94, size: 32, reset: 0x00000000, access: Unspecified

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EM37
rw
EM36
rw
EM35
rw
EM34
rw
EM33
rw
EM32
rw
Toggle fields

EM32

Bit 0: CPU wake-up with event generation mask on line x, (x1=1371to132) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bit IM36 is available only on STM32U0x3xx devices, it is reserved on STM32U031xx devices..

EM33

Bit 1: CPU wake-up with event generation mask on line x, (x1=1371to132) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bit IM36 is available only on STM32U0x3xx devices, it is reserved on STM32U031xx devices..

EM34

Bit 2: CPU wake-up with event generation mask on line x, (x1=1371to132) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bit IM36 is available only on STM32U0x3xx devices, it is reserved on STM32U031xx devices..

EM35

Bit 3: CPU wake-up with event generation mask on line x, (x1=1371to132) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bit IM36 is available only on STM32U0x3xx devices, it is reserved on STM32U031xx devices..

EM36

Bit 4: CPU wake-up with event generation mask on line x, (x1=1371to132) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bit IM36 is available only on STM32U0x3xx devices, it is reserved on STM32U031xx devices..

EM37

Bit 5: CPU wake-up with event generation mask on line x, (x1=1371to132) Setting/clearing each bit unmasks/masks the CPU wake-up with event generation on the corresponding line. Bit IM36 is available only on STM32U0x3xx devices, it is reserved on STM32U031xx devices..

FLASH

0x40022000: Mamba FLASH register block

4/64 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 FLASH_ACR
0x8 FLASH_KEYR
0xc FLASH_OPTKEYR
0x10 FLASH_SR
0x14 FLASH_CR
0x18 FLASH_ECCR
0x20 FLASH_OPTR
0x2c FLASH_WRP1AR
0x30 FLASH_WRP1BR
0x80 FLASH_SECR
Toggle registers

FLASH_ACR

FLASH access control register

Offset: 0x0, size: 32, reset: 0x00040600, access: Unspecified

0/6 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
DBG_SWEN
rw
EMPTY
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ICRST
rw
ICEN
rw
PRFTEN
rw
LATENCY
rw
Toggle fields

LATENCY

Bits 0-2: Flash memory access latency The value in this bitfield represents the number of CPU wait states when accessing the flash memory. Other: Reserved A new write into the bitfield becomes effective when it returns the same value upon read..

PRFTEN

Bit 8: CPU Prefetch enable.

ICEN

Bit 9: CPU Instruction cache enable.

ICRST

Bit 11: CPU Instruction cache reset This bit can be written only when the instruction cache is disabled..

EMPTY

Bit 16: Main flash memory area empty This bit indicates whether the first location of the main flash memory area is erased or has a programmed value. The bit can be set and reset by software..

DBG_SWEN

Bit 18: Debug access software enable Software may use this bit to enable/disable the debugger read access..

FLASH_KEYR

FLASH key register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
KEY
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
KEY
w
Toggle fields

KEY

Bits 0-31: FLASH key The following values must be written consecutively to unlock the FLASH control register (FLASH_CR), thus enabling programming/erasing operations: KEY1: 0x4567 0123 KEY2: 0xCDEF 89AB.

FLASH_OPTKEYR

FLASH option key register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OPTKEY
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OPTKEY
w
Toggle fields

OPTKEY

Bits 0-31: Option byte key The following values must be written consecutively to unlock the flash memory option registers, enabling option byte programming/erasing operations: KEY1: 0x0819 2A3B KEY2: 0x4C5D 6E7F.

FLASH_SR

FLASH status register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

2/13 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CFGBSY
r
BSY1
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OPTVERR
rw
RDERR
rw
FASTERR
rw
MISSERR
rw
PGSERR
rw
SIZERR
rw
PGAERR
rw
WRPERR
rw
PROGERR
rw
OPERR
rw
EOP
rw
Toggle fields

EOP

Bit 0: End of operation Set by hardware when one or more flash memory operation (programming / erase) has been completed successfully. This bit is set only if the end of operation interrupts are enabled (EOPIE=1). Cleared by writing 1..

OPERR

Bit 1: Operation error Set by hardware when a flash memory operation (program / erase) completes unsuccessfully. This bit is set only if error interrupts are enabled (ERRIE=1). Cleared by writing 1..

PROGERR

Bit 3: Programming error Set by hardware when a double-word address to be programmed contains a value different from '0xFFFF FFFF' before programming, except if the data to write is '0x0000 0000'. Cleared by writing 1..

WRPERR

Bit 4: Write protection error Set by hardware when an address to be erased/programmed belongs to a write-protected part (by WRP, PCROP or RDP Level 1) of the flash memory. Cleared by writing 1..

PGAERR

Bit 5: Programming alignment error Set by hardware when the data to program cannot be contained in the same double word (64-bit) flash memory in case of standard programming, or if there is a change of page during fast programming. Cleared by writing 1..

SIZERR

Bit 6: Size error Set by hardware when the size of the access is a byte or half-word during a program or a fast program sequence. Only double word programming is allowed (consequently: word access). Cleared by writing 1..

PGSERR

Bit 7: Programming sequence error Set by hardware when a write access to the flash memory is performed by the code while PG or FSTPG have not been set previously. Set also by hardware when PROGERR, SIZERR, PGAERR, WRPERR, MISSERR or FASTERR is set due to a previous programming error. Cleared by writing 1..

MISSERR

Bit 8: Fast programming data miss error In Fast programming mode, 16 double words (128 bytes) must be sent to flash memory successively, and the new data must be sent to the logic control before the current data is fully programmed. MISSERR is set by hardware when the new data is not present in time. Cleared by writing 1..

FASTERR

Bit 9: Fast programming error Set by hardware when a fast programming sequence (activated by FSTPG) is interrupted due to an error (alignment, size, write protection or data miss). The corresponding status bit (PGAERR, SIZERR, WRPERR or MISSERR) is set at the same time. Cleared by writing 1..

RDERR

Bit 14: PCROP read error Set by hardware when an address to be read belongs to a read protected area of the flash memory (PCROP protection). An interrupt is generated if RDERRIE is set in FLASH_CR. Cleared by writing 1..

OPTVERR

Bit 15: Option and Engineering bits loading validity error.

BSY1

Bit 16: Busy This flag indicates that a flash memory operation requested by FLASH control register (FLASH_CR) is in progress. This bit is set at the beginning of the flash memory operation, and cleared when the operation finishes or when an error occurs..

CFGBSY

Bit 18: Programming or erase configuration busy. This flag is set and cleared by hardware. It is set when the first word is sent for program or when setting the STRT bit of FLASH control register (FLASH_CR) for erase. It is cleared when the flash memory program or erase operation completes or ends with an error. When set, launching any other operation through the FLASH control register (FLASH_CR) is impossible, and must be postponed (a programming or erase operation is ongoing). When cleared, the program and erase settings in the FLASH control register (FLASH_CR) can be modified..

FLASH_CR

FLASH control register

Offset: 0x14, size: 32, reset: 0xC0000000, access: Unspecified

0/14 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
LOCK
rw
OPTLOCK
rw
SEC_PROT
rw
OBL_LAUNCH
rw
RDERRIE
rw
ERRIE
rw
EOPIE
rw
FSTPG
rw
OPTSTRT
rw
STRT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PNB
rw
MER1
rw
PER
rw
PG
rw
Toggle fields

PG

Bit 0: Flash memory programming enable.

PER

Bit 1: Page erase enable.

MER1

Bit 2: Mass erase When set, this bit triggers the mass erase, that is, all user pages..

PNB

Bits 3-9: Page number selection These bits select the page to erase: ... Note: Values corresponding to addresses outside the main memory are not allowed..

STRT

Bit 16: Start erase operation This bit triggers an erase operation when set. This bit is possible to set only by software and to clear only by hardware. The hardware clears it when one of BSY1 and BSY2 flags in the FLASH_SR register transits to zero..

OPTSTRT

Bit 17: Start of modification of option bytes This bit triggers an options operation when set. This bit is set only by software, and is cleared when the BSY1 bit is cleared in FLASH_SR..

FSTPG

Bit 18: Fast programming enable.

EOPIE

Bit 24: End-of-operation interrupt enable This bit enables the interrupt generation upon setting the EOP flag in the FLASH_SR register..

ERRIE

Bit 25: Error interrupt enable This bit enables the interrupt generation upon setting the OPERR flag in the FLASH_SR register..

RDERRIE

Bit 26: PCROP read error interrupt enable This bit enables the interrupt generation upon setting the RDERR flag in the FLASH_SR register..

OBL_LAUNCH

Bit 27: Option byte load launch When set, this bit triggers the load of option bytes into option registers. It is automatically cleared upon the completion of the load. The high state of the bit indicates pending option byte load. The bit cannot be cleared by software. It cannot be written as long as OPTLOCK is set..

SEC_PROT

Bit 28: Securable memory area protection enable This bit enables the protection on securable area, provided that a non-null securable memory area size (SEC_SIZE[4:0]) is defined in option bytes. This bit is possible to set only by software and to clear only through a system reset..

OPTLOCK

Bit 30: Options Lock This bit is set only. When set, all bits concerning user option in FLASH_CR register and so option page are locked. This bit is cleared by hardware after detecting the unlock sequence. The LOCK bit must be cleared before doing the unlock sequence for OPTLOCK bit. In case of an unsuccessful unlock operation, this bit remains set until the next reset..

LOCK

Bit 31: FLASH_CR Lock This bit is set only. When set, the FLASH_CR register is locked. It is cleared by hardware after detecting the unlock sequence. In case of an unsuccessful unlock operation, this bit remains set until the next system reset..

FLASH_ECCR

FLASH ECC register

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

2/5 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ECCD
rw
ECCC
rw
ECCCIE
rw
SYSF_ECC
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ADDR_ECC
r
Toggle fields

ADDR_ECC

Bits 0-13: ECC fail double-word address offset In case of ECC error or ECC correction detected, this bitfield contains double-word offset (multiple of 64 bits) to main Flash memory..

SYSF_ECC

Bit 20: System Flash memory ECC fail This bit indicates that the ECC error correction or double ECC error detection is located in the system Flash memory..

ECCCIE

Bit 24: ECC correction interrupt enable.

ECCC

Bit 30: ECC correction Set by hardware when one ECC error has been detected and corrected. An interrupt is generated if ECCIE is set. Cleared by writing 1..

ECCD

Bit 31: ECC detection Set by hardware when two ECC errors have been detected. When this bit is set, a NMI is generated. Cleared by writing 1..

FLASH_OPTR

FLASH option register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/17 fields covered.

Toggle fields

RDP

Bits 0-7: Read protection level Other: Level 1, memories read protection active.

BORR_LEV

Bits 8-10: BOR reset level.

NRST_STOP

Bit 13: Reset generated when entering Stop mode.

NRST_STDBY

Bit 14: Reset generated when entering Standby mode.

NRST_SHDW

Bit 15: Reset generated when entering Shutdown mode.

IWDG_SW

Bit 16: Independent watchdog selection.

IWDG_STOP

Bit 17: Independent watchdog counter freeze in Stop mode.

IWDG_STDBY

Bit 18: Independent watchdog counter freeze in Standby mode.

WWDG_SW

Bit 19: Window watchdog selection.

BDRST

Bit 21: Backup domain reset.

RAM_PARITY_CHECK

Bit 22: SRAM parity check control enable/disable.

BKPSRAM_HW_ERASE_DISABLE

Bit 23: Backup SRAM erase prevention.

NBOOT_SEL

Bit 24: BOOT0 signal source selection This option bit defines the source of the BOOT0 signal..

NBOOT1

Bit 25: Boot configuration Together with the BOOT0 pin or option bit NBOOT0 (depending on NBOOT_SEL option bit configuration), this bit selects boot mode from the main flash memory, SRAM or the system memory. Refer to Section12.5: Boot configuration..

NBOOT0

Bit 26: NBOOT0 option bit.

NRST_MODE

Bits 27-28: NRST pin configuration.

IRHEN

Bit 29: Internal reset holder enable bit.

FLASH_WRP1AR

FLASH WRP area A address register

Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified

0/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
WRP1A_END
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
WRP1A_STRT
rw
Toggle fields

WRP1A_STRT

Bits 0-6: WRP area A start offset This bitfield contains the offset of the first page of the WRP area A. Note: The number of effective bits depends on the size of the flash memory in the device..

WRP1A_END

Bits 16-22: WRP area A end offset This bitfield contains the offset of the last page of the WRP area A. Note: The number of effective bits depends on the size of the flash memory in the device..

FLASH_WRP1BR

FLASH WRP area B address register

Offset: 0x30, size: 32, reset: 0x00000000, access: Unspecified

0/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
WRP1B_END
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
WRP1B_STRT
rw
Toggle fields

WRP1B_STRT

Bits 0-6: WRP area B start offset This bitfield contains the offset of the first page of the WRP area B. Note: The number of effective bits depends on the size of the flash memory in the device..

WRP1B_END

Bits 16-22: WRP area B end offset This bitfield contains the offset of the last page of the WRP area B. Note: The number of effective bits depends on the size of the flash memory in the device..

FLASH_SECR

FLASH security register

Offset: 0x80, size: 32, reset: 0x00000000, access: Unspecified

0/3 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
HDP1EN
rw
BOOT_LOCK
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
HDP1_PEND
rw
Toggle fields

HDP1_PEND

Bits 0-6: Last page of the first hide protection area.

BOOT_LOCK

Bit 16: used to force boot from user area If the bit is set in association with RDP level 1, the debug capabilities are disabled, except in the case of a bad OBL (mismatch)..

HDP1EN

Bits 24-31: Hide protection area enable.

GPIOA

0x50000000: GPIOA address block description

16/177 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 GPIOA_MODER
0x4 GPIOA_OTYPER
0x8 GPIOA_OSPEEDR
0xc GPIOA_PUPDR
0x10 GPIOA_IDR
0x14 GPIOA_ODR
0x18 GPIOA_BSRR
0x1c GPIOA_LCKR
0x20 GPIOA_AFRL
0x24 GPIOA_AFRH
0x28 GPIOA_BRR
Toggle registers

GPIOA_MODER

GPIO port mode register

Offset: 0x0, size: 32, reset: 0xFFFFFFFF, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MODE15
rw
MODE14
rw
MODE13
rw
MODE12
rw
MODE11
rw
MODE10
rw
MODE9
rw
MODE8
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MODE7
rw
MODE6
rw
MODE5
rw
MODE4
rw
MODE3
rw
MODE2
rw
MODE1
rw
MODE0
rw
Toggle fields

MODE0

Bits 0-1: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE1

Bits 2-3: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE2

Bits 4-5: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE3

Bits 6-7: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE4

Bits 8-9: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE5

Bits 10-11: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE6

Bits 12-13: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE7

Bits 14-15: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE8

Bits 16-17: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE9

Bits 18-19: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE10

Bits 20-21: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE11

Bits 22-23: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE12

Bits 24-25: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE13

Bits 26-27: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE14

Bits 28-29: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE15

Bits 30-31: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

GPIOA_OTYPER

GPIO port output type register

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OT15
rw
OT14
rw
OT13
rw
OT12
rw
OT11
rw
OT10
rw
OT9
rw
OT8
rw
OT7
rw
OT6
rw
OT5
rw
OT4
rw
OT3
rw
OT2
rw
OT1
rw
OT0
rw
Toggle fields

OT0

Bit 0: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT1

Bit 1: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT2

Bit 2: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT3

Bit 3: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT4

Bit 4: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT5

Bit 5: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT6

Bit 6: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT7

Bit 7: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT8

Bit 8: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT9

Bit 9: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT10

Bit 10: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT11

Bit 11: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT12

Bit 12: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT13

Bit 13: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT14

Bit 14: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT15

Bit 15: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

GPIOA_OSPEEDR

GPIO port output speed register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OSPEED15
rw
OSPEED14
rw
OSPEED13
rw
OSPEED12
rw
OSPEED11
rw
OSPEED10
rw
OSPEED9
rw
OSPEED8
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OSPEED7
rw
OSPEED6
rw
OSPEED5
rw
OSPEED4
rw
OSPEED3
rw
OSPEED2
rw
OSPEED1
rw
OSPEED0
rw
Toggle fields

OSPEED0

Bits 0-1: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED1

Bits 2-3: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED2

Bits 4-5: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED3

Bits 6-7: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED4

Bits 8-9: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED5

Bits 10-11: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED6

Bits 12-13: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED7

Bits 14-15: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED8

Bits 16-17: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED9

Bits 18-19: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED10

Bits 20-21: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED11

Bits 22-23: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED12

Bits 24-25: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED13

Bits 26-27: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED14

Bits 28-29: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED15

Bits 30-31: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

GPIOA_PUPDR

GPIO port pull-up/pull-down register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PUPD15
rw
PUPD14
rw
PUPD13
rw
PUPD12
rw
PUPD11
rw
PUPD10
rw
PUPD9
rw
PUPD8
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PUPD7
rw
PUPD6
rw
PUPD5
rw
PUPD4
rw
PUPD3
rw
PUPD2
rw
PUPD1
rw
PUPD0
rw
Toggle fields

PUPD0

Bits 0-1: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD1

Bits 2-3: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD2

Bits 4-5: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD3

Bits 6-7: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD4

Bits 8-9: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD5

Bits 10-11: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD6

Bits 12-13: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD7

Bits 14-15: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD8

Bits 16-17: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD9

Bits 18-19: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD10

Bits 20-21: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD11

Bits 22-23: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD12

Bits 24-25: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD13

Bits 26-27: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD14

Bits 28-29: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD15

Bits 30-31: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

GPIOA_IDR

GPIO port input data register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

16/16 fields covered.

Toggle fields

ID0

Bit 0: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID1

Bit 1: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID2

Bit 2: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID3

Bit 3: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID4

Bit 4: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID5

Bit 5: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID6

Bit 6: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID7

Bit 7: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID8

Bit 8: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID9

Bit 9: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID10

Bit 10: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID11

Bit 11: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID12

Bit 12: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID13

Bit 13: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID14

Bit 14: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID15

Bit 15: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

GPIOA_ODR

GPIO port output data register

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OD15
rw
OD14
rw
OD13
rw
OD12
rw
OD11
rw
OD10
rw
OD9
rw
OD8
rw
OD7
rw
OD6
rw
OD5
rw
OD4
rw
OD3
rw
OD2
rw
OD1
rw
OD0
rw
Toggle fields

OD0

Bit 0: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD1

Bit 1: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD2

Bit 2: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD3

Bit 3: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD4

Bit 4: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD5

Bit 5: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD6

Bit 6: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD7

Bit 7: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD8

Bit 8: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD9

Bit 9: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD10

Bit 10: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD11

Bit 11: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD12

Bit 12: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD13

Bit 13: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD14

Bit 14: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD15

Bit 15: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

GPIOA_BSRR

GPIO port bit set/reset register

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/32 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BR15
w
BR14
w
BR13
w
BR12
w
BR11
w
BR10
w
BR9
w
BR8
w
BR7
w
BR6
w
BR5
w
BR4
w
BR3
w
BR2
w
BR1
w
BR0
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BS15
w
BS14
w
BS13
w
BS12
w
BS11
w
BS10
w
BS9
w
BS8
w
BS7
w
BS6
w
BS5
w
BS4
w
BS3
w
BS2
w
BS1
w
BS0
w
Toggle fields

BS0

Bit 0: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS1

Bit 1: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS2

Bit 2: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS3

Bit 3: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS4

Bit 4: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS5

Bit 5: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS6

Bit 6: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS7

Bit 7: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS8

Bit 8: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS9

Bit 9: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS10

Bit 10: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS11

Bit 11: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS12

Bit 12: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS13

Bit 13: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS14

Bit 14: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS15

Bit 15: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR0

Bit 16: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR1

Bit 17: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR2

Bit 18: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR3

Bit 19: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR4

Bit 20: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR5

Bit 21: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR6

Bit 22: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR7

Bit 23: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR8

Bit 24: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR9

Bit 25: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR10

Bit 26: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR11

Bit 27: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR12

Bit 28: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR13

Bit 29: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR14

Bit 30: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR15

Bit 31: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

GPIOA_LCKR

GPIO port configuration lock register

Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified

0/17 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
LCKK
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LCK15
rw
LCK14
rw
LCK13
rw
LCK12
rw
LCK11
rw
LCK10
rw
LCK9
rw
LCK8
rw
LCK7
rw
LCK6
rw
LCK5
rw
LCK4
rw
LCK3
rw
LCK2
rw
LCK1
rw
LCK0
rw
Toggle fields

LCK0

Bit 0: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK1

Bit 1: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK2

Bit 2: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK3

Bit 3: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK4

Bit 4: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK5

Bit 5: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK6

Bit 6: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK7

Bit 7: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK8

Bit 8: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK9

Bit 9: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK10

Bit 10: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK11

Bit 11: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK12

Bit 12: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK13

Bit 13: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK14

Bit 14: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK15

Bit 15: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCKK

Bit 16: Lock key This bit can be read any time. It can only be modified using the lock key write sequence. LOCK key write sequence: WR LCKR[16] = 1 + LCKR[15:0] WR LCKR[16] = 0 + LCKR[15:0] WR LCKR[16] = 1 + LCKR[15:0] RD LCKR RD LCKR[16] = 1 (this read operation is optional but it confirms that the lock is active) Note: During the LOCK key write sequence, the value of LCK[15:0] must not change. Note: Any error in the lock sequence aborts the lock. Note: After the first lock sequence on any bit of the port, any read access on the LCKK bit returns 1 until the next MCU reset or peripheral reset..

GPIOA_AFRL

GPIO alternate function low register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFSEL7
rw
AFSEL6
rw
AFSEL5
rw
AFSEL4
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFSEL3
rw
AFSEL2
rw
AFSEL1
rw
AFSEL0
rw
Toggle fields

AFSEL0

Bits 0-3: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL1

Bits 4-7: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL2

Bits 8-11: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL3

Bits 12-15: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL4

Bits 16-19: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL5

Bits 20-23: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL6

Bits 24-27: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL7

Bits 28-31: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

GPIOA_AFRH

GPIO alternate function high register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

0/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFSEL15
rw
AFSEL14
rw
AFSEL13
rw
AFSEL12
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFSEL11
rw
AFSEL10
rw
AFSEL9
rw
AFSEL8
rw
Toggle fields

AFSEL8

Bits 0-3: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL9

Bits 4-7: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL10

Bits 8-11: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL11

Bits 12-15: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL12

Bits 16-19: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL13

Bits 20-23: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL14

Bits 24-27: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL15

Bits 28-31: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

GPIOA_BRR

GPIO port bit reset register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

Toggle fields

BR0

Bit 0: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR1

Bit 1: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR2

Bit 2: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR3

Bit 3: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR4

Bit 4: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR5

Bit 5: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR6

Bit 6: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR7

Bit 7: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR8

Bit 8: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR9

Bit 9: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR10

Bit 10: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR11

Bit 11: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR12

Bit 12: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR13

Bit 13: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR14

Bit 14: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR15

Bit 15: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

GPIOB

0x50000400: GPIOB address block description

16/177 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 GPIOB_MODER
0x4 GPIOB_OTYPER
0x8 GPIOB_OSPEEDR
0xc GPIOB_PUPDR
0x10 GPIOB_IDR
0x14 GPIOB_ODR
0x18 GPIOB_BSRR
0x1c GPIOB_LCKR
0x20 GPIOB_AFRL
0x24 GPIOB_AFRH
0x28 GPIOB_BRR
Toggle registers

GPIOB_MODER

GPIO port mode register

Offset: 0x0, size: 32, reset: 0xFFFFFFFF, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MODE15
rw
MODE14
rw
MODE13
rw
MODE12
rw
MODE11
rw
MODE10
rw
MODE9
rw
MODE8
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MODE7
rw
MODE6
rw
MODE5
rw
MODE4
rw
MODE3
rw
MODE2
rw
MODE1
rw
MODE0
rw
Toggle fields

MODE0

Bits 0-1: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE1

Bits 2-3: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE2

Bits 4-5: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE3

Bits 6-7: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE4

Bits 8-9: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE5

Bits 10-11: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE6

Bits 12-13: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE7

Bits 14-15: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE8

Bits 16-17: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE9

Bits 18-19: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE10

Bits 20-21: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE11

Bits 22-23: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE12

Bits 24-25: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE13

Bits 26-27: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE14

Bits 28-29: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE15

Bits 30-31: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

GPIOB_OTYPER

GPIO port output type register

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OT15
rw
OT14
rw
OT13
rw
OT12
rw
OT11
rw
OT10
rw
OT9
rw
OT8
rw
OT7
rw
OT6
rw
OT5
rw
OT4
rw
OT3
rw
OT2
rw
OT1
rw
OT0
rw
Toggle fields

OT0

Bit 0: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT1

Bit 1: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT2

Bit 2: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT3

Bit 3: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT4

Bit 4: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT5

Bit 5: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT6

Bit 6: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT7

Bit 7: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT8

Bit 8: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT9

Bit 9: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT10

Bit 10: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT11

Bit 11: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT12

Bit 12: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT13

Bit 13: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT14

Bit 14: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT15

Bit 15: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

GPIOB_OSPEEDR

GPIO port output speed register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OSPEED15
rw
OSPEED14
rw
OSPEED13
rw
OSPEED12
rw
OSPEED11
rw
OSPEED10
rw
OSPEED9
rw
OSPEED8
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OSPEED7
rw
OSPEED6
rw
OSPEED5
rw
OSPEED4
rw
OSPEED3
rw
OSPEED2
rw
OSPEED1
rw
OSPEED0
rw
Toggle fields

OSPEED0

Bits 0-1: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED1

Bits 2-3: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED2

Bits 4-5: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED3

Bits 6-7: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED4

Bits 8-9: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED5

Bits 10-11: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED6

Bits 12-13: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED7

Bits 14-15: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED8

Bits 16-17: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED9

Bits 18-19: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED10

Bits 20-21: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED11

Bits 22-23: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED12

Bits 24-25: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED13

Bits 26-27: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED14

Bits 28-29: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED15

Bits 30-31: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

GPIOB_PUPDR

GPIO port pull-up/pull-down register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PUPD15
rw
PUPD14
rw
PUPD13
rw
PUPD12
rw
PUPD11
rw
PUPD10
rw
PUPD9
rw
PUPD8
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PUPD7
rw
PUPD6
rw
PUPD5
rw
PUPD4
rw
PUPD3
rw
PUPD2
rw
PUPD1
rw
PUPD0
rw
Toggle fields

PUPD0

Bits 0-1: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD1

Bits 2-3: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD2

Bits 4-5: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD3

Bits 6-7: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD4

Bits 8-9: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD5

Bits 10-11: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD6

Bits 12-13: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD7

Bits 14-15: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD8

Bits 16-17: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD9

Bits 18-19: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD10

Bits 20-21: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD11

Bits 22-23: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD12

Bits 24-25: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD13

Bits 26-27: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD14

Bits 28-29: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD15

Bits 30-31: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

GPIOB_IDR

GPIO port input data register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

16/16 fields covered.

Toggle fields

ID0

Bit 0: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID1

Bit 1: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID2

Bit 2: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID3

Bit 3: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID4

Bit 4: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID5

Bit 5: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID6

Bit 6: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID7

Bit 7: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID8

Bit 8: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID9

Bit 9: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID10

Bit 10: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID11

Bit 11: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID12

Bit 12: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID13

Bit 13: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID14

Bit 14: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID15

Bit 15: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

GPIOB_ODR

GPIO port output data register

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OD15
rw
OD14
rw
OD13
rw
OD12
rw
OD11
rw
OD10
rw
OD9
rw
OD8
rw
OD7
rw
OD6
rw
OD5
rw
OD4
rw
OD3
rw
OD2
rw
OD1
rw
OD0
rw
Toggle fields

OD0

Bit 0: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD1

Bit 1: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD2

Bit 2: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD3

Bit 3: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD4

Bit 4: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD5

Bit 5: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD6

Bit 6: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD7

Bit 7: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD8

Bit 8: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD9

Bit 9: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD10

Bit 10: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD11

Bit 11: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD12

Bit 12: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD13

Bit 13: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD14

Bit 14: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD15

Bit 15: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

GPIOB_BSRR

GPIO port bit set/reset register

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/32 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BR15
w
BR14
w
BR13
w
BR12
w
BR11
w
BR10
w
BR9
w
BR8
w
BR7
w
BR6
w
BR5
w
BR4
w
BR3
w
BR2
w
BR1
w
BR0
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BS15
w
BS14
w
BS13
w
BS12
w
BS11
w
BS10
w
BS9
w
BS8
w
BS7
w
BS6
w
BS5
w
BS4
w
BS3
w
BS2
w
BS1
w
BS0
w
Toggle fields

BS0

Bit 0: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS1

Bit 1: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS2

Bit 2: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS3

Bit 3: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS4

Bit 4: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS5

Bit 5: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS6

Bit 6: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS7

Bit 7: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS8

Bit 8: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS9

Bit 9: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS10

Bit 10: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS11

Bit 11: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS12

Bit 12: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS13

Bit 13: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS14

Bit 14: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS15

Bit 15: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR0

Bit 16: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR1

Bit 17: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR2

Bit 18: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR3

Bit 19: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR4

Bit 20: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR5

Bit 21: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR6

Bit 22: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR7

Bit 23: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR8

Bit 24: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR9

Bit 25: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR10

Bit 26: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR11

Bit 27: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR12

Bit 28: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR13

Bit 29: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR14

Bit 30: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR15

Bit 31: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

GPIOB_LCKR

GPIO port configuration lock register

Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified

0/17 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
LCKK
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LCK15
rw
LCK14
rw
LCK13
rw
LCK12
rw
LCK11
rw
LCK10
rw
LCK9
rw
LCK8
rw
LCK7
rw
LCK6
rw
LCK5
rw
LCK4
rw
LCK3
rw
LCK2
rw
LCK1
rw
LCK0
rw
Toggle fields

LCK0

Bit 0: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK1

Bit 1: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK2

Bit 2: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK3

Bit 3: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK4

Bit 4: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK5

Bit 5: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK6

Bit 6: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK7

Bit 7: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK8

Bit 8: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK9

Bit 9: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK10

Bit 10: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK11

Bit 11: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK12

Bit 12: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK13

Bit 13: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK14

Bit 14: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK15

Bit 15: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCKK

Bit 16: Lock key This bit can be read any time. It can only be modified using the lock key write sequence. LOCK key write sequence: WR LCKR[16] = 1 + LCKR[15:0] WR LCKR[16] = 0 + LCKR[15:0] WR LCKR[16] = 1 + LCKR[15:0] RD LCKR RD LCKR[16] = 1 (this read operation is optional but it confirms that the lock is active) Note: During the LOCK key write sequence, the value of LCK[15:0] must not change. Note: Any error in the lock sequence aborts the lock. Note: After the first lock sequence on any bit of the port, any read access on the LCKK bit returns 1 until the next MCU reset or peripheral reset..

GPIOB_AFRL

GPIO alternate function low register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFSEL7
rw
AFSEL6
rw
AFSEL5
rw
AFSEL4
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFSEL3
rw
AFSEL2
rw
AFSEL1
rw
AFSEL0
rw
Toggle fields

AFSEL0

Bits 0-3: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL1

Bits 4-7: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL2

Bits 8-11: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL3

Bits 12-15: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL4

Bits 16-19: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL5

Bits 20-23: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL6

Bits 24-27: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL7

Bits 28-31: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

GPIOB_AFRH

GPIO alternate function high register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

0/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFSEL15
rw
AFSEL14
rw
AFSEL13
rw
AFSEL12
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFSEL11
rw
AFSEL10
rw
AFSEL9
rw
AFSEL8
rw
Toggle fields

AFSEL8

Bits 0-3: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL9

Bits 4-7: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL10

Bits 8-11: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL11

Bits 12-15: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL12

Bits 16-19: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL13

Bits 20-23: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL14

Bits 24-27: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL15

Bits 28-31: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

GPIOB_BRR

GPIO port bit reset register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

Toggle fields

BR0

Bit 0: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR1

Bit 1: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR2

Bit 2: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR3

Bit 3: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR4

Bit 4: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR5

Bit 5: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR6

Bit 6: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR7

Bit 7: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR8

Bit 8: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR9

Bit 9: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR10

Bit 10: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR11

Bit 11: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR12

Bit 12: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR13

Bit 13: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR14

Bit 14: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR15

Bit 15: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

GPIOC

0x50000800: GPIOC address block description

16/177 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 GPIOC_MODER
0x4 GPIOC_OTYPER
0x8 GPIOC_OSPEEDR
0xc GPIOC_PUPDR
0x10 GPIOC_IDR
0x14 GPIOC_ODR
0x18 GPIOC_BSRR
0x1c GPIOC_LCKR
0x20 GPIOC_AFRL
0x24 GPIOC_AFRH
0x28 GPIOC_BRR
Toggle registers

GPIOC_MODER

GPIO port mode register

Offset: 0x0, size: 32, reset: 0xFFFFFFFF, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MODE15
rw
MODE14
rw
MODE13
rw
MODE12
rw
MODE11
rw
MODE10
rw
MODE9
rw
MODE8
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MODE7
rw
MODE6
rw
MODE5
rw
MODE4
rw
MODE3
rw
MODE2
rw
MODE1
rw
MODE0
rw
Toggle fields

MODE0

Bits 0-1: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE1

Bits 2-3: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE2

Bits 4-5: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE3

Bits 6-7: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE4

Bits 8-9: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE5

Bits 10-11: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE6

Bits 12-13: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE7

Bits 14-15: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE8

Bits 16-17: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE9

Bits 18-19: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE10

Bits 20-21: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE11

Bits 22-23: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE12

Bits 24-25: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE13

Bits 26-27: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE14

Bits 28-29: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE15

Bits 30-31: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

GPIOC_OTYPER

GPIO port output type register

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OT15
rw
OT14
rw
OT13
rw
OT12
rw
OT11
rw
OT10
rw
OT9
rw
OT8
rw
OT7
rw
OT6
rw
OT5
rw
OT4
rw
OT3
rw
OT2
rw
OT1
rw
OT0
rw
Toggle fields

OT0

Bit 0: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT1

Bit 1: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT2

Bit 2: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT3

Bit 3: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT4

Bit 4: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT5

Bit 5: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT6

Bit 6: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT7

Bit 7: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT8

Bit 8: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT9

Bit 9: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT10

Bit 10: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT11

Bit 11: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT12

Bit 12: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT13

Bit 13: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT14

Bit 14: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT15

Bit 15: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

GPIOC_OSPEEDR

GPIO port output speed register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OSPEED15
rw
OSPEED14
rw
OSPEED13
rw
OSPEED12
rw
OSPEED11
rw
OSPEED10
rw
OSPEED9
rw
OSPEED8
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OSPEED7
rw
OSPEED6
rw
OSPEED5
rw
OSPEED4
rw
OSPEED3
rw
OSPEED2
rw
OSPEED1
rw
OSPEED0
rw
Toggle fields

OSPEED0

Bits 0-1: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED1

Bits 2-3: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED2

Bits 4-5: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED3

Bits 6-7: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED4

Bits 8-9: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED5

Bits 10-11: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED6

Bits 12-13: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED7

Bits 14-15: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED8

Bits 16-17: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED9

Bits 18-19: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED10

Bits 20-21: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED11

Bits 22-23: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED12

Bits 24-25: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED13

Bits 26-27: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED14

Bits 28-29: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED15

Bits 30-31: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

GPIOC_PUPDR

GPIO port pull-up/pull-down register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PUPD15
rw
PUPD14
rw
PUPD13
rw
PUPD12
rw
PUPD11
rw
PUPD10
rw
PUPD9
rw
PUPD8
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PUPD7
rw
PUPD6
rw
PUPD5
rw
PUPD4
rw
PUPD3
rw
PUPD2
rw
PUPD1
rw
PUPD0
rw
Toggle fields

PUPD0

Bits 0-1: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD1

Bits 2-3: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD2

Bits 4-5: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD3

Bits 6-7: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD4

Bits 8-9: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD5

Bits 10-11: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD6

Bits 12-13: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD7

Bits 14-15: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD8

Bits 16-17: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD9

Bits 18-19: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD10

Bits 20-21: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD11

Bits 22-23: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD12

Bits 24-25: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD13

Bits 26-27: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD14

Bits 28-29: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD15

Bits 30-31: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

GPIOC_IDR

GPIO port input data register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

16/16 fields covered.

Toggle fields

ID0

Bit 0: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID1

Bit 1: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID2

Bit 2: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID3

Bit 3: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID4

Bit 4: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID5

Bit 5: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID6

Bit 6: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID7

Bit 7: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID8

Bit 8: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID9

Bit 9: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID10

Bit 10: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID11

Bit 11: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID12

Bit 12: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID13

Bit 13: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID14

Bit 14: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID15

Bit 15: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

GPIOC_ODR

GPIO port output data register

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OD15
rw
OD14
rw
OD13
rw
OD12
rw
OD11
rw
OD10
rw
OD9
rw
OD8
rw
OD7
rw
OD6
rw
OD5
rw
OD4
rw
OD3
rw
OD2
rw
OD1
rw
OD0
rw
Toggle fields

OD0

Bit 0: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD1

Bit 1: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD2

Bit 2: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD3

Bit 3: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD4

Bit 4: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD5

Bit 5: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD6

Bit 6: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD7

Bit 7: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD8

Bit 8: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD9

Bit 9: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD10

Bit 10: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD11

Bit 11: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD12

Bit 12: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD13

Bit 13: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD14

Bit 14: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD15

Bit 15: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

GPIOC_BSRR

GPIO port bit set/reset register

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/32 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BR15
w
BR14
w
BR13
w
BR12
w
BR11
w
BR10
w
BR9
w
BR8
w
BR7
w
BR6
w
BR5
w
BR4
w
BR3
w
BR2
w
BR1
w
BR0
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BS15
w
BS14
w
BS13
w
BS12
w
BS11
w
BS10
w
BS9
w
BS8
w
BS7
w
BS6
w
BS5
w
BS4
w
BS3
w
BS2
w
BS1
w
BS0
w
Toggle fields

BS0

Bit 0: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS1

Bit 1: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS2

Bit 2: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS3

Bit 3: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS4

Bit 4: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS5

Bit 5: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS6

Bit 6: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS7

Bit 7: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS8

Bit 8: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS9

Bit 9: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS10

Bit 10: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS11

Bit 11: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS12

Bit 12: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS13

Bit 13: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS14

Bit 14: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS15

Bit 15: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR0

Bit 16: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR1

Bit 17: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR2

Bit 18: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR3

Bit 19: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR4

Bit 20: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR5

Bit 21: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR6

Bit 22: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR7

Bit 23: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR8

Bit 24: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR9

Bit 25: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR10

Bit 26: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR11

Bit 27: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR12

Bit 28: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR13

Bit 29: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR14

Bit 30: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR15

Bit 31: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

GPIOC_LCKR

GPIO port configuration lock register

Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified

0/17 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
LCKK
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LCK15
rw
LCK14
rw
LCK13
rw
LCK12
rw
LCK11
rw
LCK10
rw
LCK9
rw
LCK8
rw
LCK7
rw
LCK6
rw
LCK5
rw
LCK4
rw
LCK3
rw
LCK2
rw
LCK1
rw
LCK0
rw
Toggle fields

LCK0

Bit 0: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK1

Bit 1: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK2

Bit 2: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK3

Bit 3: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK4

Bit 4: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK5

Bit 5: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK6

Bit 6: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK7

Bit 7: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK8

Bit 8: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK9

Bit 9: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK10

Bit 10: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK11

Bit 11: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK12

Bit 12: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK13

Bit 13: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK14

Bit 14: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK15

Bit 15: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCKK

Bit 16: Lock key This bit can be read any time. It can only be modified using the lock key write sequence. LOCK key write sequence: WR LCKR[16] = 1 + LCKR[15:0] WR LCKR[16] = 0 + LCKR[15:0] WR LCKR[16] = 1 + LCKR[15:0] RD LCKR RD LCKR[16] = 1 (this read operation is optional but it confirms that the lock is active) Note: During the LOCK key write sequence, the value of LCK[15:0] must not change. Note: Any error in the lock sequence aborts the lock. Note: After the first lock sequence on any bit of the port, any read access on the LCKK bit returns 1 until the next MCU reset or peripheral reset..

GPIOC_AFRL

GPIO alternate function low register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFSEL7
rw
AFSEL6
rw
AFSEL5
rw
AFSEL4
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFSEL3
rw
AFSEL2
rw
AFSEL1
rw
AFSEL0
rw
Toggle fields

AFSEL0

Bits 0-3: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL1

Bits 4-7: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL2

Bits 8-11: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL3

Bits 12-15: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL4

Bits 16-19: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL5

Bits 20-23: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL6

Bits 24-27: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL7

Bits 28-31: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

GPIOC_AFRH

GPIO alternate function high register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

0/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFSEL15
rw
AFSEL14
rw
AFSEL13
rw
AFSEL12
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFSEL11
rw
AFSEL10
rw
AFSEL9
rw
AFSEL8
rw
Toggle fields

AFSEL8

Bits 0-3: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL9

Bits 4-7: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL10

Bits 8-11: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL11

Bits 12-15: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL12

Bits 16-19: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL13

Bits 20-23: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL14

Bits 24-27: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL15

Bits 28-31: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

GPIOC_BRR

GPIO port bit reset register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

Toggle fields

BR0

Bit 0: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR1

Bit 1: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR2

Bit 2: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR3

Bit 3: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR4

Bit 4: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR5

Bit 5: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR6

Bit 6: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR7

Bit 7: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR8

Bit 8: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR9

Bit 9: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR10

Bit 10: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR11

Bit 11: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR12

Bit 12: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR13

Bit 13: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR14

Bit 14: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR15

Bit 15: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

GPIOD

0x50000c00: GPIOD address block description

16/177 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 GPIOD_MODER
0x4 GPIOD_OTYPER
0x8 GPIOD_OSPEEDR
0xc GPIOD_PUPDR
0x10 GPIOD_IDR
0x14 GPIOD_ODR
0x18 GPIOD_BSRR
0x1c GPIOD_LCKR
0x20 GPIOD_AFRL
0x24 GPIOD_AFRH
0x28 GPIOD_BRR
Toggle registers

GPIOD_MODER

GPIO port mode register

Offset: 0x0, size: 32, reset: 0xFFFFFFFF, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MODE15
rw
MODE14
rw
MODE13
rw
MODE12
rw
MODE11
rw
MODE10
rw
MODE9
rw
MODE8
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MODE7
rw
MODE6
rw
MODE5
rw
MODE4
rw
MODE3
rw
MODE2
rw
MODE1
rw
MODE0
rw
Toggle fields

MODE0

Bits 0-1: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE1

Bits 2-3: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE2

Bits 4-5: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE3

Bits 6-7: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE4

Bits 8-9: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE5

Bits 10-11: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE6

Bits 12-13: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE7

Bits 14-15: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE8

Bits 16-17: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE9

Bits 18-19: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE10

Bits 20-21: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE11

Bits 22-23: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE12

Bits 24-25: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE13

Bits 26-27: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE14

Bits 28-29: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE15

Bits 30-31: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

GPIOD_OTYPER

GPIO port output type register

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OT15
rw
OT14
rw
OT13
rw
OT12
rw
OT11
rw
OT10
rw
OT9
rw
OT8
rw
OT7
rw
OT6
rw
OT5
rw
OT4
rw
OT3
rw
OT2
rw
OT1
rw
OT0
rw
Toggle fields

OT0

Bit 0: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT1

Bit 1: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT2

Bit 2: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT3

Bit 3: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT4

Bit 4: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT5

Bit 5: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT6

Bit 6: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT7

Bit 7: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT8

Bit 8: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT9

Bit 9: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT10

Bit 10: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT11

Bit 11: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT12

Bit 12: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT13

Bit 13: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT14

Bit 14: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT15

Bit 15: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

GPIOD_OSPEEDR

GPIO port output speed register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OSPEED15
rw
OSPEED14
rw
OSPEED13
rw
OSPEED12
rw
OSPEED11
rw
OSPEED10
rw
OSPEED9
rw
OSPEED8
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OSPEED7
rw
OSPEED6
rw
OSPEED5
rw
OSPEED4
rw
OSPEED3
rw
OSPEED2
rw
OSPEED1
rw
OSPEED0
rw
Toggle fields

OSPEED0

Bits 0-1: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED1

Bits 2-3: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED2

Bits 4-5: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED3

Bits 6-7: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED4

Bits 8-9: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED5

Bits 10-11: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED6

Bits 12-13: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED7

Bits 14-15: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED8

Bits 16-17: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED9

Bits 18-19: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED10

Bits 20-21: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED11

Bits 22-23: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED12

Bits 24-25: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED13

Bits 26-27: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED14

Bits 28-29: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED15

Bits 30-31: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

GPIOD_PUPDR

GPIO port pull-up/pull-down register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PUPD15
rw
PUPD14
rw
PUPD13
rw
PUPD12
rw
PUPD11
rw
PUPD10
rw
PUPD9
rw
PUPD8
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PUPD7
rw
PUPD6
rw
PUPD5
rw
PUPD4
rw
PUPD3
rw
PUPD2
rw
PUPD1
rw
PUPD0
rw
Toggle fields

PUPD0

Bits 0-1: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD1

Bits 2-3: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD2

Bits 4-5: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD3

Bits 6-7: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD4

Bits 8-9: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD5

Bits 10-11: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD6

Bits 12-13: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD7

Bits 14-15: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD8

Bits 16-17: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD9

Bits 18-19: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD10

Bits 20-21: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD11

Bits 22-23: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD12

Bits 24-25: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD13

Bits 26-27: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD14

Bits 28-29: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD15

Bits 30-31: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

GPIOD_IDR

GPIO port input data register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

16/16 fields covered.

Toggle fields

ID0

Bit 0: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID1

Bit 1: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID2

Bit 2: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID3

Bit 3: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID4

Bit 4: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID5

Bit 5: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID6

Bit 6: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID7

Bit 7: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID8

Bit 8: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID9

Bit 9: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID10

Bit 10: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID11

Bit 11: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID12

Bit 12: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID13

Bit 13: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID14

Bit 14: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID15

Bit 15: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

GPIOD_ODR

GPIO port output data register

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OD15
rw
OD14
rw
OD13
rw
OD12
rw
OD11
rw
OD10
rw
OD9
rw
OD8
rw
OD7
rw
OD6
rw
OD5
rw
OD4
rw
OD3
rw
OD2
rw
OD1
rw
OD0
rw
Toggle fields

OD0

Bit 0: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD1

Bit 1: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD2

Bit 2: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD3

Bit 3: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD4

Bit 4: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD5

Bit 5: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD6

Bit 6: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD7

Bit 7: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD8

Bit 8: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD9

Bit 9: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD10

Bit 10: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD11

Bit 11: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD12

Bit 12: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD13

Bit 13: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD14

Bit 14: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD15

Bit 15: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

GPIOD_BSRR

GPIO port bit set/reset register

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/32 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BR15
w
BR14
w
BR13
w
BR12
w
BR11
w
BR10
w
BR9
w
BR8
w
BR7
w
BR6
w
BR5
w
BR4
w
BR3
w
BR2
w
BR1
w
BR0
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BS15
w
BS14
w
BS13
w
BS12
w
BS11
w
BS10
w
BS9
w
BS8
w
BS7
w
BS6
w
BS5
w
BS4
w
BS3
w
BS2
w
BS1
w
BS0
w
Toggle fields

BS0

Bit 0: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS1

Bit 1: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS2

Bit 2: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS3

Bit 3: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS4

Bit 4: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS5

Bit 5: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS6

Bit 6: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS7

Bit 7: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS8

Bit 8: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS9

Bit 9: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS10

Bit 10: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS11

Bit 11: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS12

Bit 12: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS13

Bit 13: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS14

Bit 14: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS15

Bit 15: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR0

Bit 16: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR1

Bit 17: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR2

Bit 18: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR3

Bit 19: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR4

Bit 20: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR5

Bit 21: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR6

Bit 22: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR7

Bit 23: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR8

Bit 24: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR9

Bit 25: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR10

Bit 26: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR11

Bit 27: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR12

Bit 28: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR13

Bit 29: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR14

Bit 30: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR15

Bit 31: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

GPIOD_LCKR

GPIO port configuration lock register

Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified

0/17 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
LCKK
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LCK15
rw
LCK14
rw
LCK13
rw
LCK12
rw
LCK11
rw
LCK10
rw
LCK9
rw
LCK8
rw
LCK7
rw
LCK6
rw
LCK5
rw
LCK4
rw
LCK3
rw
LCK2
rw
LCK1
rw
LCK0
rw
Toggle fields

LCK0

Bit 0: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK1

Bit 1: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK2

Bit 2: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK3

Bit 3: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK4

Bit 4: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK5

Bit 5: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK6

Bit 6: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK7

Bit 7: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK8

Bit 8: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK9

Bit 9: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK10

Bit 10: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK11

Bit 11: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK12

Bit 12: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK13

Bit 13: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK14

Bit 14: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK15

Bit 15: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCKK

Bit 16: Lock key This bit can be read any time. It can only be modified using the lock key write sequence. LOCK key write sequence: WR LCKR[16] = 1 + LCKR[15:0] WR LCKR[16] = 0 + LCKR[15:0] WR LCKR[16] = 1 + LCKR[15:0] RD LCKR RD LCKR[16] = 1 (this read operation is optional but it confirms that the lock is active) Note: During the LOCK key write sequence, the value of LCK[15:0] must not change. Note: Any error in the lock sequence aborts the lock. Note: After the first lock sequence on any bit of the port, any read access on the LCKK bit returns 1 until the next MCU reset or peripheral reset..

GPIOD_AFRL

GPIO alternate function low register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFSEL7
rw
AFSEL6
rw
AFSEL5
rw
AFSEL4
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFSEL3
rw
AFSEL2
rw
AFSEL1
rw
AFSEL0
rw
Toggle fields

AFSEL0

Bits 0-3: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL1

Bits 4-7: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL2

Bits 8-11: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL3

Bits 12-15: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL4

Bits 16-19: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL5

Bits 20-23: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL6

Bits 24-27: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL7

Bits 28-31: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

GPIOD_AFRH

GPIO alternate function high register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

0/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFSEL15
rw
AFSEL14
rw
AFSEL13
rw
AFSEL12
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFSEL11
rw
AFSEL10
rw
AFSEL9
rw
AFSEL8
rw
Toggle fields

AFSEL8

Bits 0-3: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL9

Bits 4-7: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL10

Bits 8-11: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL11

Bits 12-15: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL12

Bits 16-19: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL13

Bits 20-23: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL14

Bits 24-27: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL15

Bits 28-31: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

GPIOD_BRR

GPIO port bit reset register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

Toggle fields

BR0

Bit 0: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR1

Bit 1: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR2

Bit 2: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR3

Bit 3: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR4

Bit 4: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR5

Bit 5: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR6

Bit 6: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR7

Bit 7: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR8

Bit 8: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR9

Bit 9: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR10

Bit 10: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR11

Bit 11: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR12

Bit 12: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR13

Bit 13: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR14

Bit 14: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR15

Bit 15: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

GPIOE

0x50001000: GPIOE address block description

16/177 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 GPIOE_MODER
0x4 GPIOE_OTYPER
0x8 GPIOE_OSPEEDR
0xc GPIOE_PUPDR
0x10 GPIOE_IDR
0x14 GPIOE_ODR
0x18 GPIOE_BSRR
0x1c GPIOE_LCKR
0x20 GPIOE_AFRL
0x24 GPIOE_AFRH
0x28 GPIOE_BRR
Toggle registers

GPIOE_MODER

GPIO port mode register

Offset: 0x0, size: 32, reset: 0xFFFFFFFF, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MODE15
rw
MODE14
rw
MODE13
rw
MODE12
rw
MODE11
rw
MODE10
rw
MODE9
rw
MODE8
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MODE7
rw
MODE6
rw
MODE5
rw
MODE4
rw
MODE3
rw
MODE2
rw
MODE1
rw
MODE0
rw
Toggle fields

MODE0

Bits 0-1: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE1

Bits 2-3: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE2

Bits 4-5: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE3

Bits 6-7: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE4

Bits 8-9: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE5

Bits 10-11: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE6

Bits 12-13: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE7

Bits 14-15: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE8

Bits 16-17: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE9

Bits 18-19: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE10

Bits 20-21: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE11

Bits 22-23: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE12

Bits 24-25: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE13

Bits 26-27: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE14

Bits 28-29: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE15

Bits 30-31: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

GPIOE_OTYPER

GPIO port output type register

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OT15
rw
OT14
rw
OT13
rw
OT12
rw
OT11
rw
OT10
rw
OT9
rw
OT8
rw
OT7
rw
OT6
rw
OT5
rw
OT4
rw
OT3
rw
OT2
rw
OT1
rw
OT0
rw
Toggle fields

OT0

Bit 0: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT1

Bit 1: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT2

Bit 2: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT3

Bit 3: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT4

Bit 4: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT5

Bit 5: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT6

Bit 6: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT7

Bit 7: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT8

Bit 8: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT9

Bit 9: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT10

Bit 10: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT11

Bit 11: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT12

Bit 12: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT13

Bit 13: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT14

Bit 14: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT15

Bit 15: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

GPIOE_OSPEEDR

GPIO port output speed register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OSPEED15
rw
OSPEED14
rw
OSPEED13
rw
OSPEED12
rw
OSPEED11
rw
OSPEED10
rw
OSPEED9
rw
OSPEED8
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OSPEED7
rw
OSPEED6
rw
OSPEED5
rw
OSPEED4
rw
OSPEED3
rw
OSPEED2
rw
OSPEED1
rw
OSPEED0
rw
Toggle fields

OSPEED0

Bits 0-1: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED1

Bits 2-3: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED2

Bits 4-5: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED3

Bits 6-7: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED4

Bits 8-9: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED5

Bits 10-11: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED6

Bits 12-13: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED7

Bits 14-15: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED8

Bits 16-17: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED9

Bits 18-19: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED10

Bits 20-21: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED11

Bits 22-23: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED12

Bits 24-25: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED13

Bits 26-27: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED14

Bits 28-29: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED15

Bits 30-31: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

GPIOE_PUPDR

GPIO port pull-up/pull-down register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PUPD15
rw
PUPD14
rw
PUPD13
rw
PUPD12
rw
PUPD11
rw
PUPD10
rw
PUPD9
rw
PUPD8
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PUPD7
rw
PUPD6
rw
PUPD5
rw
PUPD4
rw
PUPD3
rw
PUPD2
rw
PUPD1
rw
PUPD0
rw
Toggle fields

PUPD0

Bits 0-1: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD1

Bits 2-3: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD2

Bits 4-5: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD3

Bits 6-7: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD4

Bits 8-9: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD5

Bits 10-11: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD6

Bits 12-13: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD7

Bits 14-15: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD8

Bits 16-17: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD9

Bits 18-19: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD10

Bits 20-21: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD11

Bits 22-23: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD12

Bits 24-25: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD13

Bits 26-27: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD14

Bits 28-29: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD15

Bits 30-31: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

GPIOE_IDR

GPIO port input data register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

16/16 fields covered.

Toggle fields

ID0

Bit 0: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID1

Bit 1: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID2

Bit 2: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID3

Bit 3: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID4

Bit 4: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID5

Bit 5: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID6

Bit 6: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID7

Bit 7: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID8

Bit 8: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID9

Bit 9: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID10

Bit 10: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID11

Bit 11: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID12

Bit 12: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID13

Bit 13: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID14

Bit 14: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID15

Bit 15: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

GPIOE_ODR

GPIO port output data register

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OD15
rw
OD14
rw
OD13
rw
OD12
rw
OD11
rw
OD10
rw
OD9
rw
OD8
rw
OD7
rw
OD6
rw
OD5
rw
OD4
rw
OD3
rw
OD2
rw
OD1
rw
OD0
rw
Toggle fields

OD0

Bit 0: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD1

Bit 1: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD2

Bit 2: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD3

Bit 3: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD4

Bit 4: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD5

Bit 5: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD6

Bit 6: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD7

Bit 7: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD8

Bit 8: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD9

Bit 9: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD10

Bit 10: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD11

Bit 11: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD12

Bit 12: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD13

Bit 13: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD14

Bit 14: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD15

Bit 15: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

GPIOE_BSRR

GPIO port bit set/reset register

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/32 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BR15
w
BR14
w
BR13
w
BR12
w
BR11
w
BR10
w
BR9
w
BR8
w
BR7
w
BR6
w
BR5
w
BR4
w
BR3
w
BR2
w
BR1
w
BR0
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BS15
w
BS14
w
BS13
w
BS12
w
BS11
w
BS10
w
BS9
w
BS8
w
BS7
w
BS6
w
BS5
w
BS4
w
BS3
w
BS2
w
BS1
w
BS0
w
Toggle fields

BS0

Bit 0: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS1

Bit 1: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS2

Bit 2: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS3

Bit 3: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS4

Bit 4: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS5

Bit 5: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS6

Bit 6: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS7

Bit 7: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS8

Bit 8: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS9

Bit 9: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS10

Bit 10: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS11

Bit 11: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS12

Bit 12: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS13

Bit 13: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS14

Bit 14: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS15

Bit 15: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR0

Bit 16: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR1

Bit 17: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR2

Bit 18: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR3

Bit 19: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR4

Bit 20: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR5

Bit 21: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR6

Bit 22: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR7

Bit 23: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR8

Bit 24: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR9

Bit 25: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR10

Bit 26: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR11

Bit 27: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR12

Bit 28: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR13

Bit 29: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR14

Bit 30: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR15

Bit 31: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

GPIOE_LCKR

GPIO port configuration lock register

Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified

0/17 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
LCKK
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LCK15
rw
LCK14
rw
LCK13
rw
LCK12
rw
LCK11
rw
LCK10
rw
LCK9
rw
LCK8
rw
LCK7
rw
LCK6
rw
LCK5
rw
LCK4
rw
LCK3
rw
LCK2
rw
LCK1
rw
LCK0
rw
Toggle fields

LCK0

Bit 0: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK1

Bit 1: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK2

Bit 2: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK3

Bit 3: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK4

Bit 4: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK5

Bit 5: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK6

Bit 6: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK7

Bit 7: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK8

Bit 8: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK9

Bit 9: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK10

Bit 10: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK11

Bit 11: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK12

Bit 12: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK13

Bit 13: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK14

Bit 14: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK15

Bit 15: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCKK

Bit 16: Lock key This bit can be read any time. It can only be modified using the lock key write sequence. LOCK key write sequence: WR LCKR[16] = 1 + LCKR[15:0] WR LCKR[16] = 0 + LCKR[15:0] WR LCKR[16] = 1 + LCKR[15:0] RD LCKR RD LCKR[16] = 1 (this read operation is optional but it confirms that the lock is active) Note: During the LOCK key write sequence, the value of LCK[15:0] must not change. Note: Any error in the lock sequence aborts the lock. Note: After the first lock sequence on any bit of the port, any read access on the LCKK bit returns 1 until the next MCU reset or peripheral reset..

GPIOE_AFRL

GPIO alternate function low register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFSEL7
rw
AFSEL6
rw
AFSEL5
rw
AFSEL4
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFSEL3
rw
AFSEL2
rw
AFSEL1
rw
AFSEL0
rw
Toggle fields

AFSEL0

Bits 0-3: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL1

Bits 4-7: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL2

Bits 8-11: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL3

Bits 12-15: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL4

Bits 16-19: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL5

Bits 20-23: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL6

Bits 24-27: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL7

Bits 28-31: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

GPIOE_AFRH

GPIO alternate function high register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

0/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFSEL15
rw
AFSEL14
rw
AFSEL13
rw
AFSEL12
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFSEL11
rw
AFSEL10
rw
AFSEL9
rw
AFSEL8
rw
Toggle fields

AFSEL8

Bits 0-3: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL9

Bits 4-7: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL10

Bits 8-11: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL11

Bits 12-15: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL12

Bits 16-19: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL13

Bits 20-23: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL14

Bits 24-27: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL15

Bits 28-31: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

GPIOE_BRR

GPIO port bit reset register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

Toggle fields

BR0

Bit 0: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR1

Bit 1: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR2

Bit 2: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR3

Bit 3: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR4

Bit 4: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR5

Bit 5: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR6

Bit 6: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR7

Bit 7: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR8

Bit 8: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR9

Bit 9: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR10

Bit 10: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR11

Bit 11: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR12

Bit 12: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR13

Bit 13: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR14

Bit 14: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR15

Bit 15: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

GPIOF

0x50001400: GPIOF address block description

16/177 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 GPIOF_MODER
0x4 GPIOF_OTYPER
0x8 GPIOF_OSPEEDR
0xc GPIOF_PUPDR
0x10 GPIOF_IDR
0x14 GPIOF_ODR
0x18 GPIOF_BSRR
0x1c GPIOF_LCKR
0x20 GPIOF_AFRL
0x24 GPIOF_AFRH
0x28 GPIOF_BRR
Toggle registers

GPIOF_MODER

GPIO port mode register

Offset: 0x0, size: 32, reset: 0xFFFFFFFF, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MODE15
rw
MODE14
rw
MODE13
rw
MODE12
rw
MODE11
rw
MODE10
rw
MODE9
rw
MODE8
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MODE7
rw
MODE6
rw
MODE5
rw
MODE4
rw
MODE3
rw
MODE2
rw
MODE1
rw
MODE0
rw
Toggle fields

MODE0

Bits 0-1: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE1

Bits 2-3: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE2

Bits 4-5: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE3

Bits 6-7: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE4

Bits 8-9: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE5

Bits 10-11: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE6

Bits 12-13: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE7

Bits 14-15: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE8

Bits 16-17: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE9

Bits 18-19: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE10

Bits 20-21: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE11

Bits 22-23: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE12

Bits 24-25: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE13

Bits 26-27: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE14

Bits 28-29: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

MODE15

Bits 30-31: Port x configuration I/O pin y These bits are written by software to configure the I/O mode..

GPIOF_OTYPER

GPIO port output type register

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OT15
rw
OT14
rw
OT13
rw
OT12
rw
OT11
rw
OT10
rw
OT9
rw
OT8
rw
OT7
rw
OT6
rw
OT5
rw
OT4
rw
OT3
rw
OT2
rw
OT1
rw
OT0
rw
Toggle fields

OT0

Bit 0: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT1

Bit 1: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT2

Bit 2: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT3

Bit 3: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT4

Bit 4: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT5

Bit 5: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT6

Bit 6: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT7

Bit 7: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT8

Bit 8: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT9

Bit 9: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT10

Bit 10: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT11

Bit 11: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT12

Bit 12: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT13

Bit 13: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT14

Bit 14: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

OT15

Bit 15: Port x configuration I/O pin y These bits are written by software to configure the I/O output type..

GPIOF_OSPEEDR

GPIO port output speed register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OSPEED15
rw
OSPEED14
rw
OSPEED13
rw
OSPEED12
rw
OSPEED11
rw
OSPEED10
rw
OSPEED9
rw
OSPEED8
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OSPEED7
rw
OSPEED6
rw
OSPEED5
rw
OSPEED4
rw
OSPEED3
rw
OSPEED2
rw
OSPEED1
rw
OSPEED0
rw
Toggle fields

OSPEED0

Bits 0-1: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED1

Bits 2-3: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED2

Bits 4-5: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED3

Bits 6-7: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED4

Bits 8-9: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED5

Bits 10-11: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED6

Bits 12-13: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED7

Bits 14-15: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED8

Bits 16-17: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED9

Bits 18-19: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED10

Bits 20-21: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED11

Bits 22-23: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED12

Bits 24-25: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED13

Bits 26-27: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED14

Bits 28-29: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

OSPEED15

Bits 30-31: Port x configuration I/O pin y These bits are written by software to configure the I/O output speed. Note: Refer to the device datasheet for the frequency specifications and the power supply and load conditions for each speed...

GPIOF_PUPDR

GPIO port pull-up/pull-down register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PUPD15
rw
PUPD14
rw
PUPD13
rw
PUPD12
rw
PUPD11
rw
PUPD10
rw
PUPD9
rw
PUPD8
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PUPD7
rw
PUPD6
rw
PUPD5
rw
PUPD4
rw
PUPD3
rw
PUPD2
rw
PUPD1
rw
PUPD0
rw
Toggle fields

PUPD0

Bits 0-1: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD1

Bits 2-3: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD2

Bits 4-5: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD3

Bits 6-7: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD4

Bits 8-9: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD5

Bits 10-11: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD6

Bits 12-13: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD7

Bits 14-15: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD8

Bits 16-17: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD9

Bits 18-19: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD10

Bits 20-21: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD11

Bits 22-23: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD12

Bits 24-25: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD13

Bits 26-27: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD14

Bits 28-29: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

PUPD15

Bits 30-31: Port x configuration I/O pin y These bits are written by software to configure the I/O pull-up or pull-down.

GPIOF_IDR

GPIO port input data register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

16/16 fields covered.

Toggle fields

ID0

Bit 0: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID1

Bit 1: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID2

Bit 2: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID3

Bit 3: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID4

Bit 4: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID5

Bit 5: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID6

Bit 6: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID7

Bit 7: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID8

Bit 8: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID9

Bit 9: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID10

Bit 10: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID11

Bit 11: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID12

Bit 12: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID13

Bit 13: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID14

Bit 14: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

ID15

Bit 15: Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port..

GPIOF_ODR

GPIO port output data register

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OD15
rw
OD14
rw
OD13
rw
OD12
rw
OD11
rw
OD10
rw
OD9
rw
OD8
rw
OD7
rw
OD6
rw
OD5
rw
OD4
rw
OD3
rw
OD2
rw
OD1
rw
OD0
rw
Toggle fields

OD0

Bit 0: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD1

Bit 1: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD2

Bit 2: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD3

Bit 3: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD4

Bit 4: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD5

Bit 5: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD6

Bit 6: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD7

Bit 7: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD8

Bit 8: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD9

Bit 9: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD10

Bit 10: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD11

Bit 11: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD12

Bit 12: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD13

Bit 13: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD14

Bit 14: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

OD15

Bit 15: Port output data I/O pin y These bits can be read and written by software. Note: For atomic bit set/reset, the OD bits can be individually set and/or reset by writing to the GPIOx_BSRR register (x = A..F)..

GPIOF_BSRR

GPIO port bit set/reset register

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/32 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BR15
w
BR14
w
BR13
w
BR12
w
BR11
w
BR10
w
BR9
w
BR8
w
BR7
w
BR6
w
BR5
w
BR4
w
BR3
w
BR2
w
BR1
w
BR0
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BS15
w
BS14
w
BS13
w
BS12
w
BS11
w
BS10
w
BS9
w
BS8
w
BS7
w
BS6
w
BS5
w
BS4
w
BS3
w
BS2
w
BS1
w
BS0
w
Toggle fields

BS0

Bit 0: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS1

Bit 1: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS2

Bit 2: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS3

Bit 3: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS4

Bit 4: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS5

Bit 5: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS6

Bit 6: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS7

Bit 7: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS8

Bit 8: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS9

Bit 9: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS10

Bit 10: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS11

Bit 11: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS12

Bit 12: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS13

Bit 13: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS14

Bit 14: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BS15

Bit 15: Port x set I/O pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR0

Bit 16: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR1

Bit 17: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR2

Bit 18: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR3

Bit 19: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR4

Bit 20: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR5

Bit 21: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR6

Bit 22: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR7

Bit 23: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR8

Bit 24: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR9

Bit 25: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR10

Bit 26: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR11

Bit 27: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR12

Bit 28: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR13

Bit 29: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR14

Bit 30: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

BR15

Bit 31: Port x reset I/O pin y These bits are write-only. A read to these bits returns the value 0x0000. Note: If both BSx and BRx are set, BSx has priority..

GPIOF_LCKR

GPIO port configuration lock register

Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified

0/17 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
LCKK
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LCK15
rw
LCK14
rw
LCK13
rw
LCK12
rw
LCK11
rw
LCK10
rw
LCK9
rw
LCK8
rw
LCK7
rw
LCK6
rw
LCK5
rw
LCK4
rw
LCK3
rw
LCK2
rw
LCK1
rw
LCK0
rw
Toggle fields

LCK0

Bit 0: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK1

Bit 1: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK2

Bit 2: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK3

Bit 3: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK4

Bit 4: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK5

Bit 5: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK6

Bit 6: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK7

Bit 7: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK8

Bit 8: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK9

Bit 9: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK10

Bit 10: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK11

Bit 11: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK12

Bit 12: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK13

Bit 13: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK14

Bit 14: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCK15

Bit 15: Port x lock I/O pin y These bits are read/write but can only be written when the LCKK bit is 0..

LCKK

Bit 16: Lock key This bit can be read any time. It can only be modified using the lock key write sequence. LOCK key write sequence: WR LCKR[16] = 1 + LCKR[15:0] WR LCKR[16] = 0 + LCKR[15:0] WR LCKR[16] = 1 + LCKR[15:0] RD LCKR RD LCKR[16] = 1 (this read operation is optional but it confirms that the lock is active) Note: During the LOCK key write sequence, the value of LCK[15:0] must not change. Note: Any error in the lock sequence aborts the lock. Note: After the first lock sequence on any bit of the port, any read access on the LCKK bit returns 1 until the next MCU reset or peripheral reset..

GPIOF_AFRL

GPIO alternate function low register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFSEL7
rw
AFSEL6
rw
AFSEL5
rw
AFSEL4
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFSEL3
rw
AFSEL2
rw
AFSEL1
rw
AFSEL0
rw
Toggle fields

AFSEL0

Bits 0-3: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL1

Bits 4-7: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL2

Bits 8-11: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL3

Bits 12-15: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL4

Bits 16-19: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL5

Bits 20-23: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL6

Bits 24-27: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL7

Bits 28-31: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

GPIOF_AFRH

GPIO alternate function high register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

0/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFSEL15
rw
AFSEL14
rw
AFSEL13
rw
AFSEL12
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFSEL11
rw
AFSEL10
rw
AFSEL9
rw
AFSEL8
rw
Toggle fields

AFSEL8

Bits 0-3: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL9

Bits 4-7: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL10

Bits 8-11: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL11

Bits 12-15: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL12

Bits 16-19: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL13

Bits 20-23: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL14

Bits 24-27: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

AFSEL15

Bits 28-31: Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os..

GPIOF_BRR

GPIO port bit reset register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

Toggle fields

BR0

Bit 0: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR1

Bit 1: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR2

Bit 2: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR3

Bit 3: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR4

Bit 4: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR5

Bit 5: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR6

Bit 6: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR7

Bit 7: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR8

Bit 8: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR9

Bit 9: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR10

Bit 10: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR11

Bit 11: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR12

Bit 12: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR13

Bit 13: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR14

Bit 14: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

BR15

Bit 15: Port x reset IO pin y These bits are write-only. A read to these bits returns the value 0x0000..

I2C1

0x40005400: I2C address block description

14/68 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 I2C_CR1
0x4 I2C_CR2
0x8 I2C_OAR1
0xc I2C_OAR2
0x10 I2C_TIMINGR
0x14 I2C_TIMEOUTR
0x18 I2C_ISR
0x1c I2C_ICR
0x20 I2C_PECR
0x24 I2C_RXDR
0x28 I2C_TXDR
Toggle registers

I2C_CR1

I2C control register 1

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/19 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
STOPFACLR
rw
ADDRACLR
rw
FMP
rw
GCEN
rw
WUPEN
rw
NOSTRETCH
rw
SBC
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RXDMAEN
rw
TXDMAEN
rw
ANFOFF
rw
DNF
rw
ERRIE
rw
TCIE
rw
STOPIE
rw
NACKIE
rw
ADDRIE
rw
RXIE
rw
TXIE
rw
PE
rw
Toggle fields

PE

Bit 0: Peripheral enable Note: When PE = 0, the I2C SCL and SDA lines are released. Internal state machines and status bits are put back to their reset value. When cleared, PE must be kept low for at least three APB clock cycles..

TXIE

Bit 1: TX interrupt enable.

RXIE

Bit 2: RX interrupt enable.

ADDRIE

Bit 3: Address match interrupt enable (slave only).

NACKIE

Bit 4: Not acknowledge received interrupt enable.

STOPIE

Bit 5: Stop detection interrupt enable.

TCIE

Bit 6: Transfer complete interrupt enable Note: Any of these events generate an interrupt: Note: Transfer complete (TC) Note: Transfer complete reload (TCR).

ERRIE

Bit 7: Error interrupts enable Note: Any of these errors generate an interrupt: Note: Arbitration loss (ARLO) Note: Bus error detection (BERR) Note: Overrun/Underrun (OVR).

DNF

Bits 8-11: Digital noise filter These bits are used to configure the digital noise filter on SDA and SCL input. The digital filter, filters spikes with a length of up to DNF[3:0] * t<sub>I2CCLK</sub> <sub>...</sub> Note: If the analog filter is enabled, the digital filter is added to it. This filter can be programmed only when the I2C is disabled (PE = 0)..

ANFOFF

Bit 12: Analog noise filter OFF Note: This bit can be programmed only when the I2C is disabled (PE = 0)..

TXDMAEN

Bit 14: DMA transmission requests enable.

RXDMAEN

Bit 15: DMA reception requests enable.

SBC

Bit 16: Slave byte control This bit is used to enable hardware byte control in slave mode..

NOSTRETCH

Bit 17: Clock stretching disable This bit is used to disable clock stretching in slave mode. It must be kept cleared in master mode. Note: This bit can be programmed only when the I2C is disabled (PE = 0)..

WUPEN

Bit 18: Wake-up from Stop mode enable.

GCEN

Bit 19: General call enable.

FMP

Bit 24: Fast-mode Plus 20 mA drive enable.

ADDRACLR

Bit 30: Address match flag (ADDR) automatic clear.

STOPFACLR

Bit 31: STOP detection flag (STOPF) automatic clear.

I2C_CR2

I2C control register 2

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/10 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AUTOEND
rw
RELOAD
rw
NBYTES
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
NACK
rw
STOP
rw
START
rw
HEAD10R
rw
ADD10
rw
RD_WRN
rw
SADD
rw
Toggle fields

SADD

Bits 0-9: Slave address (master mode) In 7-bit addressing mode (ADD10 = 0): SADD[7:1] must be written with the 7-bit slave address to be sent. Bits SADD[9], SADD[8] and SADD[0] are don't care. In 10-bit addressing mode (ADD10 = 1): SADD[9:0] must be written with the 10-bit slave address to be sent. Note: Changing these bits when the START bit is set is not allowed..

RD_WRN

Bit 10: Transfer direction (master mode) Note: Changing this bit when the START bit is set is not allowed..

ADD10

Bit 11: 10-bit addressing mode (master mode) Note: Changing this bit when the START bit is set is not allowed..

HEAD10R

Bit 12: 10-bit address header only read direction (master receiver mode) Note: Changing this bit when the START bit is set is not allowed..

START

Bit 13: Start generation This bit is set by software, and cleared by hardware after the Start followed by the address sequence is sent, by an arbitration loss, by an address matched in slave mode, by a timeout error detection, or when PE = 0. If the I2C is already in master mode with AUTOEND = 0, setting this bit generates a Repeated start condition when RELOAD = 0, after the end of the NBYTES transfer. Otherwise, setting this bit generates a START condition once the bus is free. Note: Writing 0 to this bit has no effect. Note: The START bit can be set even if the bus is BUSY or I2C is in slave mode. Note: This bit has no effect when RELOAD is set..

STOP

Bit 14: Stop generation (master mode) The bit is set by software, cleared by hardware when a STOP condition is detected, or when PE = 0. In master mode: Note: Writing 0 to this bit has no effect..

NACK

Bit 15: NACK generation (slave mode) The bit is set by software, cleared by hardware when the NACK is sent, or when a STOP condition or an Address matched is received, or when PE = 0. Note: Writing 0 to this bit has no effect. Note: This bit is used in slave mode only: in master receiver mode, NACK is automatically generated after last byte preceding STOP or RESTART condition, whatever the NACK bit value. Note: When an overrun occurs in slave receiver NOSTRETCH mode, a NACK is automatically generated, whatever the NACK bit value. Note: When hardware PEC checking is enabled (PECBYTE = 1), the PEC acknowledge value does not depend on the NACK value..

NBYTES

Bits 16-23: Number of bytes.

RELOAD

Bit 24: NBYTES reload mode This bit is set and cleared by software..

AUTOEND

Bit 25: Automatic end mode (master mode) This bit is set and cleared by software. Note: This bit has no effect in slave mode or when the RELOAD bit is set..

I2C_OAR1

I2C own address 1 register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OA1EN
rw
OA1MODE
rw
OA1
rw
Toggle fields

OA1

Bits 0-9: Interface own slave address 7-bit addressing mode: OA1[7:1] contains the 7-bit own slave address. Bits OA1[9], OA1[8] and OA1[0] are don't care. 10-bit addressing mode: OA1[9:0] contains the 10-bit own slave address. Note: These bits can be written only when OA1EN = 0..

OA1MODE

Bit 10: Own address 1 10-bit mode Note: This bit can be written only when OA1EN = 0..

OA1EN

Bit 15: Own address 1 enable.

I2C_OAR2

I2C own address 2 register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OA2EN
rw
OA2MSK
rw
OA2
rw
Toggle fields

OA2

Bits 1-7: Interface address 7-bit addressing mode: 7-bit address Note: These bits can be written only when OA2EN = 0..

OA2MSK

Bits 8-10: Own address 2 masks Note: These bits can be written only when OA2EN = 0. Note: As soon as OA2MSK is not equal to 0, the reserved I2C addresses (0b0000xxx and 0b1111xxx) are not acknowledged even if the comparison matches..

OA2EN

Bit 15: Own address 2 enable.

I2C_TIMINGR

I2C timing register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

0/5 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PRESC
rw
SCLDEL
rw
SDADEL
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SCLH
rw
SCLL
rw
Toggle fields

SCLL

Bits 0-7: SCL low period (master mode) This field is used to generate the SCL low period in master mode. t<sub>SCLL </sub>= (SCLL + 1) x t<sub>PRESC</sub> Note: SCLL is also used to generate t<sub>BUF </sub>and t<sub>SU:STA </sub>timings..

SCLH

Bits 8-15: SCL high period (master mode) This field is used to generate the SCL high period in master mode. t<sub>SCLH </sub>= (SCLH + 1) x t<sub>PRESC</sub> Note: SCLH is also used to generate t<sub>SU:STO </sub>and t<sub>HD:STA </sub>timing..

SDADEL

Bits 16-19: Data hold time This field is used to generate the delay t<sub>SDADEL </sub>between SCL falling edge and SDA edge. In master and in slave modes with NOSTRETCH = 0, the SCL line is stretched low during t<sub>SDADEL</sub>. t<sub>SDADEL</sub>= SDADEL x t<sub>PRESC</sub> Note: SDADEL is used to generate t<sub>HD:DAT </sub>timing..

SCLDEL

Bits 20-23: Data setup time This field is used to generate a delay t<sub>SCLDEL </sub>between SDA edge and SCL rising edge. In master and in slave modes with NOSTRETCH = 0, the SCL line is stretched low during t<sub>SCLDEL</sub>. t<sub>SCLDEL </sub>= (SCLDEL + 1) x t<sub>PRESC</sub> Note: t<sub>SCLDEL</sub> is used to generate t<sub>SU:DAT </sub>timing..

PRESC

Bits 28-31: Timing prescaler This field is used to prescale I2CCLK to generate the clock period t<sub>PRESC </sub>used for data setup and hold counters (refer to I2C timings) and for SCL high and low level counters (refer to I2C master initialization). t<sub>PRESC </sub>= (PRESC + 1) x t<sub>I2CCLK</sub>.

I2C_TIMEOUTR

I2C timeout register

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/5 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TEXTEN
rw
TIMEOUTB
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TIMOUTEN
rw
TIDLE
rw
TIMEOUTA
rw
Toggle fields

TIMEOUTA

Bits 0-11: Bus timeout A This field is used to configure: The SCL low timeout condition t<sub>TIMEOUT</sub> when TIDLE = 0 t<sub>TIMEOUT</sub>= (TIMEOUTA + 1) x 2048 x t<sub>I2CCLK</sub> The bus idle condition (both SCL and SDA high) when TIDLE = 1 t<sub>IDLE</sub>= (TIMEOUTA + 1) x 4 x t<sub>I2CCLK</sub> Note: These bits can be written only when TIMOUTEN = 0..

TIDLE

Bit 12: Idle clock timeout detection Note: This bit can be written only when TIMOUTEN = 0..

TIMOUTEN

Bit 15: Clock timeout enable.

TIMEOUTB

Bits 16-27: Bus timeout B This field is used to configure the cumulative clock extension timeout: In master mode, the master cumulative clock low extend time (t<sub>LOW:MEXT</sub>) is detected In slave mode, the slave cumulative clock low extend time (t<sub>LOW:SEXT</sub>) is detected t<sub>LOW:EXT </sub>= (TIMEOUTB + TIDLE = 01) x 2048 x t<sub>I2CCLK</sub> Note: These bits can be written only when TEXTEN = 0..

TEXTEN

Bit 31: Extended clock timeout enable.

I2C_ISR

I2C interrupt and status register

Offset: 0x18, size: 32, reset: 0x00000001, access: Unspecified

12/14 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ADDCODE
r
DIR
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BUSY
r
OVR
r
ARLO
r
BERR
r
TCR
r
TC
r
STOPF
r
NACKF
r
ADDR
r
RXNE
r
TXIS
rw
TXE
rw
Toggle fields

TXE

Bit 0: Transmit data register empty (transmitters) This bit is set by hardware when the I2C_TXDR register is empty. It is cleared when the next data to be sent is written in the I2C_TXDR register. This bit can be written to 1 by software in order to flush the transmit data register I2C_TXDR. Note: This bit is set by hardware when PE = 0..

TXIS

Bit 1: Transmit interrupt status (transmitters) This bit is set by hardware when the I2C_TXDR register is empty and the data to be transmitted must be written in the I2C_TXDR register. It is cleared when the next data to be sent is written in the I2C_TXDR register. This bit can be written to 1 by software only when NOSTRETCH = 1, to generate a TXIS event (interrupt if TXIE = 1 or DMA request if TXDMAEN = 1). Note: This bit is cleared by hardware when PE = 0..

RXNE

Bit 2: Receive data register not empty (receivers) This bit is set by hardware when the received data is copied into the I2C_RXDR register, and is ready to be read. It is cleared when I2C_RXDR is read. Note: This bit is cleared by hardware when PE = 0..

ADDR

Bit 3: Address matched (slave mode) This bit is set by hardware as soon as the received slave address matched with one of the enabled slave addresses. It is cleared by software by setting ADDRCF bit. Note: This bit is cleared by hardware when PE = 0..

NACKF

Bit 4: Not Acknowledge received flag This flag is set by hardware when a NACK is received after a byte transmission. It is cleared by software by setting the NACKCF bit. Note: This bit is cleared by hardware when PE = 0..

STOPF

Bit 5: Stop detection flag This flag is set by hardware when a STOP condition is detected on the bus and the peripheral is involved in this transfer: either as a master, provided that the STOP condition is generated by the peripheral. or as a slave, provided that the peripheral has been addressed previously during this transfer. It is cleared by software by setting the STOPCF bit. Note: This bit is cleared by hardware when PE = 0..

TC

Bit 6: Transfer Complete (master mode) This flag is set by hardware when RELOAD = 0, AUTOEND = 0 and NBYTES data have been transferred. It is cleared by software when START bit or STOP bit is set. Note: This bit is cleared by hardware when PE = 0..

TCR

Bit 7: Transfer Complete Reload This flag is set by hardware when RELOAD = 1 and NBYTES data have been transferred. It is cleared by software when NBYTES is written to a non-zero value. Note: This bit is cleared by hardware when PE = 0. Note: This flag is only for master mode, or for slave mode when the SBC bit is set..

BERR

Bit 8: Bus error This flag is set by hardware when a misplaced Start or STOP condition is detected whereas the peripheral is involved in the transfer. The flag is not set during the address phase in slave mode. It is cleared by software by setting BERRCF bit. Note: This bit is cleared by hardware when PE = 0..

ARLO

Bit 9: Arbitration lost This flag is set by hardware in case of arbitration loss. It is cleared by software by setting the ARLOCF bit. Note: This bit is cleared by hardware when PE = 0..

OVR

Bit 10: Overrun/Underrun (slave mode) This flag is set by hardware in slave mode with NOSTRETCH = 1, when an overrun/underrun error occurs. It is cleared by software by setting the OVRCF bit. Note: This bit is cleared by hardware when PE = 0..

BUSY

Bit 15: Bus busy This flag indicates that a communication is in progress on the bus. It is set by hardware when a START condition is detected, and cleared by hardware when a STOP condition is detected, or when PE = 0..

DIR

Bit 16: Transfer direction (slave mode) This flag is updated when an address match event occurs (ADDR = 1)..

ADDCODE

Bits 17-23: Address match code (slave mode) These bits are updated with the received address when an address match event occurs (ADDR = 1). In the case of a 10-bit address, ADDCODE provides the 10-bit header followed by the two MSBs of the address..

I2C_ICR

I2C interrupt clear register

Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OVRCF
w
ARLOCF
w
BERRCF
w
STOPCF
w
NACKCF
w
ADDRCF
w
Toggle fields

ADDRCF

Bit 3: Address matched flag clear Writing 1 to this bit clears the ADDR flag in the I2C_ISR register. Writing 1 to this bit also clears the START bit in the I2C_CR2 register..

NACKCF

Bit 4: Not Acknowledge flag clear Writing 1 to this bit clears the NACKF flag in I2C_ISR register..

STOPCF

Bit 5: STOP detection flag clear Writing 1 to this bit clears the STOPF flag in the I2C_ISR register..

BERRCF

Bit 8: Bus error flag clear Writing 1 to this bit clears the BERRF flag in the I2C_ISR register..

ARLOCF

Bit 9: Arbitration lost flag clear Writing 1 to this bit clears the ARLO flag in the I2C_ISR register..

OVRCF

Bit 10: Overrun/Underrun flag clear Writing 1 to this bit clears the OVR flag in the I2C_ISR register..

I2C_PECR

I2C PEC register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PEC
r
Toggle fields

PEC

Bits 0-7: Packet error checking register This field contains the internal PEC when PECEN=1. The PEC is cleared by hardware when PE = 0..

I2C_RXDR

I2C receive data register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RXDATA
r
Toggle fields

RXDATA

Bits 0-7: 8-bit receive data Data byte received from the I<sup>2</sup>C bus.

I2C_TXDR

I2C transmit data register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TXDATA
rw
Toggle fields

TXDATA

Bits 0-7: 8-bit transmit data Data byte to be transmitted to the I<sup>2</sup>C bus Note: These bits can be written only when TXE = 1..

I2C2

0x40005800: I2C address block description

14/68 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 I2C_CR1
0x4 I2C_CR2
0x8 I2C_OAR1
0xc I2C_OAR2
0x10 I2C_TIMINGR
0x14 I2C_TIMEOUTR
0x18 I2C_ISR
0x1c I2C_ICR
0x20 I2C_PECR
0x24 I2C_RXDR
0x28 I2C_TXDR
Toggle registers

I2C_CR1

I2C control register 1

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/19 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
STOPFACLR
rw
ADDRACLR
rw
FMP
rw
GCEN
rw
WUPEN
rw
NOSTRETCH
rw
SBC
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RXDMAEN
rw
TXDMAEN
rw
ANFOFF
rw
DNF
rw
ERRIE
rw
TCIE
rw
STOPIE
rw
NACKIE
rw
ADDRIE
rw
RXIE
rw
TXIE
rw
PE
rw
Toggle fields

PE

Bit 0: Peripheral enable Note: When PE = 0, the I2C SCL and SDA lines are released. Internal state machines and status bits are put back to their reset value. When cleared, PE must be kept low for at least three APB clock cycles..

TXIE

Bit 1: TX interrupt enable.

RXIE

Bit 2: RX interrupt enable.

ADDRIE

Bit 3: Address match interrupt enable (slave only).

NACKIE

Bit 4: Not acknowledge received interrupt enable.

STOPIE

Bit 5: Stop detection interrupt enable.

TCIE

Bit 6: Transfer complete interrupt enable Note: Any of these events generate an interrupt: Note: Transfer complete (TC) Note: Transfer complete reload (TCR).

ERRIE

Bit 7: Error interrupts enable Note: Any of these errors generate an interrupt: Note: Arbitration loss (ARLO) Note: Bus error detection (BERR) Note: Overrun/Underrun (OVR).

DNF

Bits 8-11: Digital noise filter These bits are used to configure the digital noise filter on SDA and SCL input. The digital filter, filters spikes with a length of up to DNF[3:0] * t<sub>I2CCLK</sub> <sub>...</sub> Note: If the analog filter is enabled, the digital filter is added to it. This filter can be programmed only when the I2C is disabled (PE = 0)..

ANFOFF

Bit 12: Analog noise filter OFF Note: This bit can be programmed only when the I2C is disabled (PE = 0)..

TXDMAEN

Bit 14: DMA transmission requests enable.

RXDMAEN

Bit 15: DMA reception requests enable.

SBC

Bit 16: Slave byte control This bit is used to enable hardware byte control in slave mode..

NOSTRETCH

Bit 17: Clock stretching disable This bit is used to disable clock stretching in slave mode. It must be kept cleared in master mode. Note: This bit can be programmed only when the I2C is disabled (PE = 0)..

WUPEN

Bit 18: Wake-up from Stop mode enable.

GCEN

Bit 19: General call enable.

FMP

Bit 24: Fast-mode Plus 20 mA drive enable.

ADDRACLR

Bit 30: Address match flag (ADDR) automatic clear.

STOPFACLR

Bit 31: STOP detection flag (STOPF) automatic clear.

I2C_CR2

I2C control register 2

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/10 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AUTOEND
rw
RELOAD
rw
NBYTES
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
NACK
rw
STOP
rw
START
rw
HEAD10R
rw
ADD10
rw
RD_WRN
rw
SADD
rw
Toggle fields

SADD

Bits 0-9: Slave address (master mode) In 7-bit addressing mode (ADD10 = 0): SADD[7:1] must be written with the 7-bit slave address to be sent. Bits SADD[9], SADD[8] and SADD[0] are don't care. In 10-bit addressing mode (ADD10 = 1): SADD[9:0] must be written with the 10-bit slave address to be sent. Note: Changing these bits when the START bit is set is not allowed..

RD_WRN

Bit 10: Transfer direction (master mode) Note: Changing this bit when the START bit is set is not allowed..

ADD10

Bit 11: 10-bit addressing mode (master mode) Note: Changing this bit when the START bit is set is not allowed..

HEAD10R

Bit 12: 10-bit address header only read direction (master receiver mode) Note: Changing this bit when the START bit is set is not allowed..

START

Bit 13: Start generation This bit is set by software, and cleared by hardware after the Start followed by the address sequence is sent, by an arbitration loss, by an address matched in slave mode, by a timeout error detection, or when PE = 0. If the I2C is already in master mode with AUTOEND = 0, setting this bit generates a Repeated start condition when RELOAD = 0, after the end of the NBYTES transfer. Otherwise, setting this bit generates a START condition once the bus is free. Note: Writing 0 to this bit has no effect. Note: The START bit can be set even if the bus is BUSY or I2C is in slave mode. Note: This bit has no effect when RELOAD is set..

STOP

Bit 14: Stop generation (master mode) The bit is set by software, cleared by hardware when a STOP condition is detected, or when PE = 0. In master mode: Note: Writing 0 to this bit has no effect..

NACK

Bit 15: NACK generation (slave mode) The bit is set by software, cleared by hardware when the NACK is sent, or when a STOP condition or an Address matched is received, or when PE = 0. Note: Writing 0 to this bit has no effect. Note: This bit is used in slave mode only: in master receiver mode, NACK is automatically generated after last byte preceding STOP or RESTART condition, whatever the NACK bit value. Note: When an overrun occurs in slave receiver NOSTRETCH mode, a NACK is automatically generated, whatever the NACK bit value. Note: When hardware PEC checking is enabled (PECBYTE = 1), the PEC acknowledge value does not depend on the NACK value..

NBYTES

Bits 16-23: Number of bytes.

RELOAD

Bit 24: NBYTES reload mode This bit is set and cleared by software..

AUTOEND

Bit 25: Automatic end mode (master mode) This bit is set and cleared by software. Note: This bit has no effect in slave mode or when the RELOAD bit is set..

I2C_OAR1

I2C own address 1 register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OA1EN
rw
OA1MODE
rw
OA1
rw
Toggle fields

OA1

Bits 0-9: Interface own slave address 7-bit addressing mode: OA1[7:1] contains the 7-bit own slave address. Bits OA1[9], OA1[8] and OA1[0] are don't care. 10-bit addressing mode: OA1[9:0] contains the 10-bit own slave address. Note: These bits can be written only when OA1EN = 0..

OA1MODE

Bit 10: Own address 1 10-bit mode Note: This bit can be written only when OA1EN = 0..

OA1EN

Bit 15: Own address 1 enable.

I2C_OAR2

I2C own address 2 register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OA2EN
rw
OA2MSK
rw
OA2
rw
Toggle fields

OA2

Bits 1-7: Interface address 7-bit addressing mode: 7-bit address Note: These bits can be written only when OA2EN = 0..

OA2MSK

Bits 8-10: Own address 2 masks Note: These bits can be written only when OA2EN = 0. Note: As soon as OA2MSK is not equal to 0, the reserved I2C addresses (0b0000xxx and 0b1111xxx) are not acknowledged even if the comparison matches..

OA2EN

Bit 15: Own address 2 enable.

I2C_TIMINGR

I2C timing register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

0/5 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PRESC
rw
SCLDEL
rw
SDADEL
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SCLH
rw
SCLL
rw
Toggle fields

SCLL

Bits 0-7: SCL low period (master mode) This field is used to generate the SCL low period in master mode. t<sub>SCLL </sub>= (SCLL + 1) x t<sub>PRESC</sub> Note: SCLL is also used to generate t<sub>BUF </sub>and t<sub>SU:STA </sub>timings..

SCLH

Bits 8-15: SCL high period (master mode) This field is used to generate the SCL high period in master mode. t<sub>SCLH </sub>= (SCLH + 1) x t<sub>PRESC</sub> Note: SCLH is also used to generate t<sub>SU:STO </sub>and t<sub>HD:STA </sub>timing..

SDADEL

Bits 16-19: Data hold time This field is used to generate the delay t<sub>SDADEL </sub>between SCL falling edge and SDA edge. In master and in slave modes with NOSTRETCH = 0, the SCL line is stretched low during t<sub>SDADEL</sub>. t<sub>SDADEL</sub>= SDADEL x t<sub>PRESC</sub> Note: SDADEL is used to generate t<sub>HD:DAT </sub>timing..

SCLDEL

Bits 20-23: Data setup time This field is used to generate a delay t<sub>SCLDEL </sub>between SDA edge and SCL rising edge. In master and in slave modes with NOSTRETCH = 0, the SCL line is stretched low during t<sub>SCLDEL</sub>. t<sub>SCLDEL </sub>= (SCLDEL + 1) x t<sub>PRESC</sub> Note: t<sub>SCLDEL</sub> is used to generate t<sub>SU:DAT </sub>timing..

PRESC

Bits 28-31: Timing prescaler This field is used to prescale I2CCLK to generate the clock period t<sub>PRESC </sub>used for data setup and hold counters (refer to I2C timings) and for SCL high and low level counters (refer to I2C master initialization). t<sub>PRESC </sub>= (PRESC + 1) x t<sub>I2CCLK</sub>.

I2C_TIMEOUTR

I2C timeout register

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/5 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TEXTEN
rw
TIMEOUTB
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TIMOUTEN
rw
TIDLE
rw
TIMEOUTA
rw
Toggle fields

TIMEOUTA

Bits 0-11: Bus timeout A This field is used to configure: The SCL low timeout condition t<sub>TIMEOUT</sub> when TIDLE = 0 t<sub>TIMEOUT</sub>= (TIMEOUTA + 1) x 2048 x t<sub>I2CCLK</sub> The bus idle condition (both SCL and SDA high) when TIDLE = 1 t<sub>IDLE</sub>= (TIMEOUTA + 1) x 4 x t<sub>I2CCLK</sub> Note: These bits can be written only when TIMOUTEN = 0..

TIDLE

Bit 12: Idle clock timeout detection Note: This bit can be written only when TIMOUTEN = 0..

TIMOUTEN

Bit 15: Clock timeout enable.

TIMEOUTB

Bits 16-27: Bus timeout B This field is used to configure the cumulative clock extension timeout: In master mode, the master cumulative clock low extend time (t<sub>LOW:MEXT</sub>) is detected In slave mode, the slave cumulative clock low extend time (t<sub>LOW:SEXT</sub>) is detected t<sub>LOW:EXT </sub>= (TIMEOUTB + TIDLE = 01) x 2048 x t<sub>I2CCLK</sub> Note: These bits can be written only when TEXTEN = 0..

TEXTEN

Bit 31: Extended clock timeout enable.

I2C_ISR

I2C interrupt and status register

Offset: 0x18, size: 32, reset: 0x00000001, access: Unspecified

12/14 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ADDCODE
r
DIR
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BUSY
r
OVR
r
ARLO
r
BERR
r
TCR
r
TC
r
STOPF
r
NACKF
r
ADDR
r
RXNE
r
TXIS
rw
TXE
rw
Toggle fields

TXE

Bit 0: Transmit data register empty (transmitters) This bit is set by hardware when the I2C_TXDR register is empty. It is cleared when the next data to be sent is written in the I2C_TXDR register. This bit can be written to 1 by software in order to flush the transmit data register I2C_TXDR. Note: This bit is set by hardware when PE = 0..

TXIS

Bit 1: Transmit interrupt status (transmitters) This bit is set by hardware when the I2C_TXDR register is empty and the data to be transmitted must be written in the I2C_TXDR register. It is cleared when the next data to be sent is written in the I2C_TXDR register. This bit can be written to 1 by software only when NOSTRETCH = 1, to generate a TXIS event (interrupt if TXIE = 1 or DMA request if TXDMAEN = 1). Note: This bit is cleared by hardware when PE = 0..

RXNE

Bit 2: Receive data register not empty (receivers) This bit is set by hardware when the received data is copied into the I2C_RXDR register, and is ready to be read. It is cleared when I2C_RXDR is read. Note: This bit is cleared by hardware when PE = 0..

ADDR

Bit 3: Address matched (slave mode) This bit is set by hardware as soon as the received slave address matched with one of the enabled slave addresses. It is cleared by software by setting ADDRCF bit. Note: This bit is cleared by hardware when PE = 0..

NACKF

Bit 4: Not Acknowledge received flag This flag is set by hardware when a NACK is received after a byte transmission. It is cleared by software by setting the NACKCF bit. Note: This bit is cleared by hardware when PE = 0..

STOPF

Bit 5: Stop detection flag This flag is set by hardware when a STOP condition is detected on the bus and the peripheral is involved in this transfer: either as a master, provided that the STOP condition is generated by the peripheral. or as a slave, provided that the peripheral has been addressed previously during this transfer. It is cleared by software by setting the STOPCF bit. Note: This bit is cleared by hardware when PE = 0..

TC

Bit 6: Transfer Complete (master mode) This flag is set by hardware when RELOAD = 0, AUTOEND = 0 and NBYTES data have been transferred. It is cleared by software when START bit or STOP bit is set. Note: This bit is cleared by hardware when PE = 0..

TCR

Bit 7: Transfer Complete Reload This flag is set by hardware when RELOAD = 1 and NBYTES data have been transferred. It is cleared by software when NBYTES is written to a non-zero value. Note: This bit is cleared by hardware when PE = 0. Note: This flag is only for master mode, or for slave mode when the SBC bit is set..

BERR

Bit 8: Bus error This flag is set by hardware when a misplaced Start or STOP condition is detected whereas the peripheral is involved in the transfer. The flag is not set during the address phase in slave mode. It is cleared by software by setting BERRCF bit. Note: This bit is cleared by hardware when PE = 0..

ARLO

Bit 9: Arbitration lost This flag is set by hardware in case of arbitration loss. It is cleared by software by setting the ARLOCF bit. Note: This bit is cleared by hardware when PE = 0..

OVR

Bit 10: Overrun/Underrun (slave mode) This flag is set by hardware in slave mode with NOSTRETCH = 1, when an overrun/underrun error occurs. It is cleared by software by setting the OVRCF bit. Note: This bit is cleared by hardware when PE = 0..

BUSY

Bit 15: Bus busy This flag indicates that a communication is in progress on the bus. It is set by hardware when a START condition is detected, and cleared by hardware when a STOP condition is detected, or when PE = 0..

DIR

Bit 16: Transfer direction (slave mode) This flag is updated when an address match event occurs (ADDR = 1)..

ADDCODE

Bits 17-23: Address match code (slave mode) These bits are updated with the received address when an address match event occurs (ADDR = 1). In the case of a 10-bit address, ADDCODE provides the 10-bit header followed by the two MSBs of the address..

I2C_ICR

I2C interrupt clear register

Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OVRCF
w
ARLOCF
w
BERRCF
w
STOPCF
w
NACKCF
w
ADDRCF
w
Toggle fields

ADDRCF

Bit 3: Address matched flag clear Writing 1 to this bit clears the ADDR flag in the I2C_ISR register. Writing 1 to this bit also clears the START bit in the I2C_CR2 register..

NACKCF

Bit 4: Not Acknowledge flag clear Writing 1 to this bit clears the NACKF flag in I2C_ISR register..

STOPCF

Bit 5: STOP detection flag clear Writing 1 to this bit clears the STOPF flag in the I2C_ISR register..

BERRCF

Bit 8: Bus error flag clear Writing 1 to this bit clears the BERRF flag in the I2C_ISR register..

ARLOCF

Bit 9: Arbitration lost flag clear Writing 1 to this bit clears the ARLO flag in the I2C_ISR register..

OVRCF

Bit 10: Overrun/Underrun flag clear Writing 1 to this bit clears the OVR flag in the I2C_ISR register..

I2C_PECR

I2C PEC register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PEC
r
Toggle fields

PEC

Bits 0-7: Packet error checking register This field contains the internal PEC when PECEN=1. The PEC is cleared by hardware when PE = 0..

I2C_RXDR

I2C receive data register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RXDATA
r
Toggle fields

RXDATA

Bits 0-7: 8-bit receive data Data byte received from the I<sup>2</sup>C bus.

I2C_TXDR

I2C transmit data register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TXDATA
rw
Toggle fields

TXDATA

Bits 0-7: 8-bit transmit data Data byte to be transmitted to the I<sup>2</sup>C bus Note: These bits can be written only when TXE = 1..

I2C3

0x40008800: I2C address block description

14/68 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 I2C_CR1
0x4 I2C_CR2
0x8 I2C_OAR1
0xc I2C_OAR2
0x10 I2C_TIMINGR
0x14 I2C_TIMEOUTR
0x18 I2C_ISR
0x1c I2C_ICR
0x20 I2C_PECR
0x24 I2C_RXDR
0x28 I2C_TXDR
Toggle registers

I2C_CR1

I2C control register 1

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/19 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
STOPFACLR
rw
ADDRACLR
rw
FMP
rw
GCEN
rw
WUPEN
rw
NOSTRETCH
rw
SBC
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RXDMAEN
rw
TXDMAEN
rw
ANFOFF
rw
DNF
rw
ERRIE
rw
TCIE
rw
STOPIE
rw
NACKIE
rw
ADDRIE
rw
RXIE
rw
TXIE
rw
PE
rw
Toggle fields

PE

Bit 0: Peripheral enable Note: When PE = 0, the I2C SCL and SDA lines are released. Internal state machines and status bits are put back to their reset value. When cleared, PE must be kept low for at least three APB clock cycles..

TXIE

Bit 1: TX interrupt enable.

RXIE

Bit 2: RX interrupt enable.

ADDRIE

Bit 3: Address match interrupt enable (slave only).

NACKIE

Bit 4: Not acknowledge received interrupt enable.

STOPIE

Bit 5: Stop detection interrupt enable.

TCIE

Bit 6: Transfer complete interrupt enable Note: Any of these events generate an interrupt: Note: Transfer complete (TC) Note: Transfer complete reload (TCR).

ERRIE

Bit 7: Error interrupts enable Note: Any of these errors generate an interrupt: Note: Arbitration loss (ARLO) Note: Bus error detection (BERR) Note: Overrun/Underrun (OVR).

DNF

Bits 8-11: Digital noise filter These bits are used to configure the digital noise filter on SDA and SCL input. The digital filter, filters spikes with a length of up to DNF[3:0] * t<sub>I2CCLK</sub> <sub>...</sub> Note: If the analog filter is enabled, the digital filter is added to it. This filter can be programmed only when the I2C is disabled (PE = 0)..

ANFOFF

Bit 12: Analog noise filter OFF Note: This bit can be programmed only when the I2C is disabled (PE = 0)..

TXDMAEN

Bit 14: DMA transmission requests enable.

RXDMAEN

Bit 15: DMA reception requests enable.

SBC

Bit 16: Slave byte control This bit is used to enable hardware byte control in slave mode..

NOSTRETCH

Bit 17: Clock stretching disable This bit is used to disable clock stretching in slave mode. It must be kept cleared in master mode. Note: This bit can be programmed only when the I2C is disabled (PE = 0)..

WUPEN

Bit 18: Wake-up from Stop mode enable.

GCEN

Bit 19: General call enable.

FMP

Bit 24: Fast-mode Plus 20 mA drive enable.

ADDRACLR

Bit 30: Address match flag (ADDR) automatic clear.

STOPFACLR

Bit 31: STOP detection flag (STOPF) automatic clear.

I2C_CR2

I2C control register 2

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/10 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AUTOEND
rw
RELOAD
rw
NBYTES
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
NACK
rw
STOP
rw
START
rw
HEAD10R
rw
ADD10
rw
RD_WRN
rw
SADD
rw
Toggle fields

SADD

Bits 0-9: Slave address (master mode) In 7-bit addressing mode (ADD10 = 0): SADD[7:1] must be written with the 7-bit slave address to be sent. Bits SADD[9], SADD[8] and SADD[0] are don't care. In 10-bit addressing mode (ADD10 = 1): SADD[9:0] must be written with the 10-bit slave address to be sent. Note: Changing these bits when the START bit is set is not allowed..

RD_WRN

Bit 10: Transfer direction (master mode) Note: Changing this bit when the START bit is set is not allowed..

ADD10

Bit 11: 10-bit addressing mode (master mode) Note: Changing this bit when the START bit is set is not allowed..

HEAD10R

Bit 12: 10-bit address header only read direction (master receiver mode) Note: Changing this bit when the START bit is set is not allowed..

START

Bit 13: Start generation This bit is set by software, and cleared by hardware after the Start followed by the address sequence is sent, by an arbitration loss, by an address matched in slave mode, by a timeout error detection, or when PE = 0. If the I2C is already in master mode with AUTOEND = 0, setting this bit generates a Repeated start condition when RELOAD = 0, after the end of the NBYTES transfer. Otherwise, setting this bit generates a START condition once the bus is free. Note: Writing 0 to this bit has no effect. Note: The START bit can be set even if the bus is BUSY or I2C is in slave mode. Note: This bit has no effect when RELOAD is set..

STOP

Bit 14: Stop generation (master mode) The bit is set by software, cleared by hardware when a STOP condition is detected, or when PE = 0. In master mode: Note: Writing 0 to this bit has no effect..

NACK

Bit 15: NACK generation (slave mode) The bit is set by software, cleared by hardware when the NACK is sent, or when a STOP condition or an Address matched is received, or when PE = 0. Note: Writing 0 to this bit has no effect. Note: This bit is used in slave mode only: in master receiver mode, NACK is automatically generated after last byte preceding STOP or RESTART condition, whatever the NACK bit value. Note: When an overrun occurs in slave receiver NOSTRETCH mode, a NACK is automatically generated, whatever the NACK bit value. Note: When hardware PEC checking is enabled (PECBYTE = 1), the PEC acknowledge value does not depend on the NACK value..

NBYTES

Bits 16-23: Number of bytes.

RELOAD

Bit 24: NBYTES reload mode This bit is set and cleared by software..

AUTOEND

Bit 25: Automatic end mode (master mode) This bit is set and cleared by software. Note: This bit has no effect in slave mode or when the RELOAD bit is set..

I2C_OAR1

I2C own address 1 register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OA1EN
rw
OA1MODE
rw
OA1
rw
Toggle fields

OA1

Bits 0-9: Interface own slave address 7-bit addressing mode: OA1[7:1] contains the 7-bit own slave address. Bits OA1[9], OA1[8] and OA1[0] are don't care. 10-bit addressing mode: OA1[9:0] contains the 10-bit own slave address. Note: These bits can be written only when OA1EN = 0..

OA1MODE

Bit 10: Own address 1 10-bit mode Note: This bit can be written only when OA1EN = 0..

OA1EN

Bit 15: Own address 1 enable.

I2C_OAR2

I2C own address 2 register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OA2EN
rw
OA2MSK
rw
OA2
rw
Toggle fields

OA2

Bits 1-7: Interface address 7-bit addressing mode: 7-bit address Note: These bits can be written only when OA2EN = 0..

OA2MSK

Bits 8-10: Own address 2 masks Note: These bits can be written only when OA2EN = 0. Note: As soon as OA2MSK is not equal to 0, the reserved I2C addresses (0b0000xxx and 0b1111xxx) are not acknowledged even if the comparison matches..

OA2EN

Bit 15: Own address 2 enable.

I2C_TIMINGR

I2C timing register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

0/5 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PRESC
rw
SCLDEL
rw
SDADEL
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SCLH
rw
SCLL
rw
Toggle fields

SCLL

Bits 0-7: SCL low period (master mode) This field is used to generate the SCL low period in master mode. t<sub>SCLL </sub>= (SCLL + 1) x t<sub>PRESC</sub> Note: SCLL is also used to generate t<sub>BUF </sub>and t<sub>SU:STA </sub>timings..

SCLH

Bits 8-15: SCL high period (master mode) This field is used to generate the SCL high period in master mode. t<sub>SCLH </sub>= (SCLH + 1) x t<sub>PRESC</sub> Note: SCLH is also used to generate t<sub>SU:STO </sub>and t<sub>HD:STA </sub>timing..

SDADEL

Bits 16-19: Data hold time This field is used to generate the delay t<sub>SDADEL </sub>between SCL falling edge and SDA edge. In master and in slave modes with NOSTRETCH = 0, the SCL line is stretched low during t<sub>SDADEL</sub>. t<sub>SDADEL</sub>= SDADEL x t<sub>PRESC</sub> Note: SDADEL is used to generate t<sub>HD:DAT </sub>timing..

SCLDEL

Bits 20-23: Data setup time This field is used to generate a delay t<sub>SCLDEL </sub>between SDA edge and SCL rising edge. In master and in slave modes with NOSTRETCH = 0, the SCL line is stretched low during t<sub>SCLDEL</sub>. t<sub>SCLDEL </sub>= (SCLDEL + 1) x t<sub>PRESC</sub> Note: t<sub>SCLDEL</sub> is used to generate t<sub>SU:DAT </sub>timing..

PRESC

Bits 28-31: Timing prescaler This field is used to prescale I2CCLK to generate the clock period t<sub>PRESC </sub>used for data setup and hold counters (refer to I2C timings) and for SCL high and low level counters (refer to I2C master initialization). t<sub>PRESC </sub>= (PRESC + 1) x t<sub>I2CCLK</sub>.

I2C_TIMEOUTR

I2C timeout register

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/5 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TEXTEN
rw
TIMEOUTB
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TIMOUTEN
rw
TIDLE
rw
TIMEOUTA
rw
Toggle fields

TIMEOUTA

Bits 0-11: Bus timeout A This field is used to configure: The SCL low timeout condition t<sub>TIMEOUT</sub> when TIDLE = 0 t<sub>TIMEOUT</sub>= (TIMEOUTA + 1) x 2048 x t<sub>I2CCLK</sub> The bus idle condition (both SCL and SDA high) when TIDLE = 1 t<sub>IDLE</sub>= (TIMEOUTA + 1) x 4 x t<sub>I2CCLK</sub> Note: These bits can be written only when TIMOUTEN = 0..

TIDLE

Bit 12: Idle clock timeout detection Note: This bit can be written only when TIMOUTEN = 0..

TIMOUTEN

Bit 15: Clock timeout enable.

TIMEOUTB

Bits 16-27: Bus timeout B This field is used to configure the cumulative clock extension timeout: In master mode, the master cumulative clock low extend time (t<sub>LOW:MEXT</sub>) is detected In slave mode, the slave cumulative clock low extend time (t<sub>LOW:SEXT</sub>) is detected t<sub>LOW:EXT </sub>= (TIMEOUTB + TIDLE = 01) x 2048 x t<sub>I2CCLK</sub> Note: These bits can be written only when TEXTEN = 0..

TEXTEN

Bit 31: Extended clock timeout enable.

I2C_ISR

I2C interrupt and status register

Offset: 0x18, size: 32, reset: 0x00000001, access: Unspecified

12/14 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ADDCODE
r
DIR
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BUSY
r
OVR
r
ARLO
r
BERR
r
TCR
r
TC
r
STOPF
r
NACKF
r
ADDR
r
RXNE
r
TXIS
rw
TXE
rw
Toggle fields

TXE

Bit 0: Transmit data register empty (transmitters) This bit is set by hardware when the I2C_TXDR register is empty. It is cleared when the next data to be sent is written in the I2C_TXDR register. This bit can be written to 1 by software in order to flush the transmit data register I2C_TXDR. Note: This bit is set by hardware when PE = 0..

TXIS

Bit 1: Transmit interrupt status (transmitters) This bit is set by hardware when the I2C_TXDR register is empty and the data to be transmitted must be written in the I2C_TXDR register. It is cleared when the next data to be sent is written in the I2C_TXDR register. This bit can be written to 1 by software only when NOSTRETCH = 1, to generate a TXIS event (interrupt if TXIE = 1 or DMA request if TXDMAEN = 1). Note: This bit is cleared by hardware when PE = 0..

RXNE

Bit 2: Receive data register not empty (receivers) This bit is set by hardware when the received data is copied into the I2C_RXDR register, and is ready to be read. It is cleared when I2C_RXDR is read. Note: This bit is cleared by hardware when PE = 0..

ADDR

Bit 3: Address matched (slave mode) This bit is set by hardware as soon as the received slave address matched with one of the enabled slave addresses. It is cleared by software by setting ADDRCF bit. Note: This bit is cleared by hardware when PE = 0..

NACKF

Bit 4: Not Acknowledge received flag This flag is set by hardware when a NACK is received after a byte transmission. It is cleared by software by setting the NACKCF bit. Note: This bit is cleared by hardware when PE = 0..

STOPF

Bit 5: Stop detection flag This flag is set by hardware when a STOP condition is detected on the bus and the peripheral is involved in this transfer: either as a master, provided that the STOP condition is generated by the peripheral. or as a slave, provided that the peripheral has been addressed previously during this transfer. It is cleared by software by setting the STOPCF bit. Note: This bit is cleared by hardware when PE = 0..

TC

Bit 6: Transfer Complete (master mode) This flag is set by hardware when RELOAD = 0, AUTOEND = 0 and NBYTES data have been transferred. It is cleared by software when START bit or STOP bit is set. Note: This bit is cleared by hardware when PE = 0..

TCR

Bit 7: Transfer Complete Reload This flag is set by hardware when RELOAD = 1 and NBYTES data have been transferred. It is cleared by software when NBYTES is written to a non-zero value. Note: This bit is cleared by hardware when PE = 0. Note: This flag is only for master mode, or for slave mode when the SBC bit is set..

BERR

Bit 8: Bus error This flag is set by hardware when a misplaced Start or STOP condition is detected whereas the peripheral is involved in the transfer. The flag is not set during the address phase in slave mode. It is cleared by software by setting BERRCF bit. Note: This bit is cleared by hardware when PE = 0..

ARLO

Bit 9: Arbitration lost This flag is set by hardware in case of arbitration loss. It is cleared by software by setting the ARLOCF bit. Note: This bit is cleared by hardware when PE = 0..

OVR

Bit 10: Overrun/Underrun (slave mode) This flag is set by hardware in slave mode with NOSTRETCH = 1, when an overrun/underrun error occurs. It is cleared by software by setting the OVRCF bit. Note: This bit is cleared by hardware when PE = 0..

BUSY

Bit 15: Bus busy This flag indicates that a communication is in progress on the bus. It is set by hardware when a START condition is detected, and cleared by hardware when a STOP condition is detected, or when PE = 0..

DIR

Bit 16: Transfer direction (slave mode) This flag is updated when an address match event occurs (ADDR = 1)..

ADDCODE

Bits 17-23: Address match code (slave mode) These bits are updated with the received address when an address match event occurs (ADDR = 1). In the case of a 10-bit address, ADDCODE provides the 10-bit header followed by the two MSBs of the address..

I2C_ICR

I2C interrupt clear register

Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OVRCF
w
ARLOCF
w
BERRCF
w
STOPCF
w
NACKCF
w
ADDRCF
w
Toggle fields

ADDRCF

Bit 3: Address matched flag clear Writing 1 to this bit clears the ADDR flag in the I2C_ISR register. Writing 1 to this bit also clears the START bit in the I2C_CR2 register..

NACKCF

Bit 4: Not Acknowledge flag clear Writing 1 to this bit clears the NACKF flag in I2C_ISR register..

STOPCF

Bit 5: STOP detection flag clear Writing 1 to this bit clears the STOPF flag in the I2C_ISR register..

BERRCF

Bit 8: Bus error flag clear Writing 1 to this bit clears the BERRF flag in the I2C_ISR register..

ARLOCF

Bit 9: Arbitration lost flag clear Writing 1 to this bit clears the ARLO flag in the I2C_ISR register..

OVRCF

Bit 10: Overrun/Underrun flag clear Writing 1 to this bit clears the OVR flag in the I2C_ISR register..

I2C_PECR

I2C PEC register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PEC
r
Toggle fields

PEC

Bits 0-7: Packet error checking register This field contains the internal PEC when PECEN=1. The PEC is cleared by hardware when PE = 0..

I2C_RXDR

I2C receive data register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RXDATA
r
Toggle fields

RXDATA

Bits 0-7: 8-bit receive data Data byte received from the I<sup>2</sup>C bus.

I2C_TXDR

I2C transmit data register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TXDATA
rw
Toggle fields

TXDATA

Bits 0-7: 8-bit transmit data Data byte to be transmitted to the I<sup>2</sup>C bus Note: These bits can be written only when TXE = 1..

IWDG

0x40003000: IWDG address block description

6/13 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 IWDG_KR
0x4 IWDG_PR
0x8 IWDG_RLR
0xc IWDG_SR
0x10 IWDG_WINR
0x14 IWDG_EWCR
Toggle registers

IWDG_KR

IWDG key register

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
KEY
w
Toggle fields

KEY

Bits 0-15: Key value (write only, read 0x0000) These bits can be used for several functions, depending upon the value written by the application: - 0xAAAA: reloads the RL[11:0] value into the IWDCNT down-counter (watchdog refresh), and write-protects registers. This value must be written by software at regular intervals, otherwise the watchdog generates a reset when the counter reaches 0. - 0x5555: enables write-accesses to the registers. - 0xCCCC: enables the watchdog (except if the hardware watchdog option is selected) and write-protects registers. - values different from 0x5555: write-protects registers. Note that only IWDG_PR, IWDG_RLR, IWDG_EWCR and IWDG_WINR registers have a write-protection mechanism..

IWDG_PR

IWDG prescaler register

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PR
rw
Toggle fields

PR

Bits 0-3: Prescaler divider These bits are write access protected, see Section126.4.6. They are written by software to select the prescaler divider feeding the counter clock. PVU bit of the IWDG status register (IWDG_SR) must be reset to be able to change the prescaler divider. Others: divider / 1024 Note: Reading this register returns the prescaler value from the V<sub>DD</sub> voltage domain. This value may not be up to date/valid if a write operation to this register is ongoing. For this reason the value read from this register is valid only when the PVU bit in the IWDG status register (IWDG_SR) is reset..

IWDG_RLR

IWDG reload register

Offset: 0x8, size: 32, reset: 0x00000FFF, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RL
rw
Toggle fields

RL

Bits 0-11: Watchdog counter reload value These bits are write access protected, see Section126.4.6. They are written by software to define the value to be loaded in the watchdog counter each time the value 0xAAAA is written in the IWDG key register (IWDG_KR). The watchdog counter counts down from this value. The timeout period is a function of this value and the prescaler.clock. It is not recommended to set RL[11:0] to a value lower than 2. The RVU bit in the IWDG status register (IWDG_SR) must be reset to be able to change the reload value. Note: Reading this register returns the reload value from the V<sub>DD</sub> voltage domain. This value may not be up to date/valid if a write operation to this register is ongoing, hence the value read from this register is valid only when the RVU bit in the IWDG status register (IWDG_SR) is reset..

IWDG_SR

IWDG status register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

6/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EWIF
r
ONF
r
EWU
r
WVU
r
RVU
r
PVU
r
Toggle fields

PVU

Bit 0: Watchdog prescaler value update This bit is set by hardware to indicate that an update of the prescaler value is ongoing. It is reset by hardware when the prescaler update operation is completed in the V<sub>DD</sub> voltage domain (takes up to six periods of the IWDG kernel clock iwdg_ker_ck). The prescaler value can be updated only when PVU bit is reset..

RVU

Bit 1: Watchdog counter reload value update This bit is set by hardware to indicate that an update of the reload value is ongoing. It is reset by hardware when the reload value update operation is completed in the V<sub>DD</sub> voltage domain (takes up to six periods of the IWDG kernel clock iwdg_ker_ck). The reload value can be updated only when RVU bit is reset..

WVU

Bit 2: Watchdog counter window value update This bit is set by hardware to indicate that an update of the window value is ongoing. It is reset by hardware when the reload value update operation is completed in the V<sub>DD</sub> voltage domain (takes up to one period of presc_ck and two periods of the IWDG kernel clock iwdg_ker_ck). The window value can be updated only when WVU bit is reset. This bit is generated only if generic window = 1..

EWU

Bit 3: Watchdog interrupt comparator value update This bit is set by hardware to indicate that an update of the interrupt comparator value (EWIT[11:0]) or an update of the EWIE is ongoing. It is reset by hardware when the update operation is completed in the V<sub>DD</sub> voltage domain (takes up to one period of presc_ck and two periods of the IWDG kernel clock iwdg_ker_ck). The EWIT[11:0] and EWIE fields can be updated only when EWU bit is reset..

ONF

Bit 8: Watchdog enable status bit Set to 1 by hardware as soon as the IWDG is started. In software mode, it remains to '1' until the IWDG is reset. In hardware mode, this bit is always set to '1'..

EWIF

Bit 14: Watchdog early interrupt flag This bit is set to 1 by hardware in order to indicate that an early interrupt is pending. This bit must be cleared by the software by writing the bit EWIC of IWDG_EWCR register to 1..

IWDG_WINR

IWDG window register

Offset: 0x10, size: 32, reset: 0x00000FFF, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
WIN
rw
Toggle fields

WIN

Bits 0-11: Watchdog counter window value These bits are write access protected, see Section126.4.6.They contain the high limit of the window value to be compared with the downcounter. To prevent a reset, the IWDCNT downcounter must be reloaded when its value is lower than WIN[11:0]1+11 and greater than 1. The WVU bit in the IWDG status register (IWDG_SR) must be reset to be able to change the reload value. Note: Reading this register returns the reload value from the V<sub>DD</sub> voltage domain. This value may not be valid if a write operation to this register is ongoing. For this reason the value read from this register is valid only when the WVU bit in the IWDG status register (IWDG_SR) is reset..

IWDG_EWCR

IWDG early wake-up interrupt register

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EWIE
rw
EWIC
w
EWIT
rw
Toggle fields

EWIT

Bits 0-11: Watchdog counter window value These bits are write access protected (see Section126.4.6). They are written by software to define at which position of the IWDCNT down-counter the early wake-up interrupt must be generated. The early interrupt is generated when the IWDCNT is lower or equal to EWIT[11:0]1-11. EWIT[11:0] must be bigger than 1. An interrupt is generated only if EWIE = 1. The EWU bit in the IWDG status register (IWDG_SR) must be reset to be able to change the reload value. Note: Reading this register returns the Early wake-up comparator value and the Interrupt enable bit from the V<sub>DD</sub> voltage domain. This value may not be up to date/valid if a write operation to this register is ongoing, hence the value read from this register is valid only when the EWU bit in the IWDG status register (IWDG_SR) is reset..

EWIC

Bit 14: Watchdog early interrupt acknowledge The software must write a 1 into this bit in order to acknowledge the early wake-up interrupt and to clear the EWIF flag. Writing 0 has not effect, reading this flag returns a 0..

EWIE

Bit 15: Watchdog early interrupt enable Set and reset by software. The EWU bit in the IWDG status register (IWDG_SR) must be reset to be able to change the value of this bit..

LPTIM1

0x40007c00: LPTIM1 address block description

33/148 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 LPTIM1_ISR_INPUT
0x0 LPTIM1_ISR_OUTPUT
0x4 LPTIM1_ICR_INPUT
0x4 LPTIM1_ICR_OUTPUT
0x8 LPTIM1_DIER_INPUT
0x8 LPTIM1_DIER_OUTPUT
0xc LPTIM1_CFGR
0x10 LPTIM1_CR
0x14 LPTIM1_CCR1
0x18 LPTIM1_ARR
0x1c LPTIM1_CNT
0x24 LPTIM1_CFGR2
0x28 LPTIM1_RCR
0x2c LPTIM1_CCMR1
0x30 LPTIM1_CCMR2
0x34 LPTIM1_CCR2
0x38 LPTIM1_CCR3
0x3c LPTIM1_CCR4
Toggle registers

LPTIM1_ISR_INPUT

LPTIM1 interrupt and status register [alternate]

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

16/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
DIEROK
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC4OF
r
CC3OF
r
CC2OF
r
CC1OF
r
CC4IF
r
CC3IF
r
CC2IF
r
REPOK
r
UE
r
DOWN
r
UP
r
ARROK
r
EXTTRIG
r
ARRM
r
CC1IF
r
Toggle fields

CC1IF

Bit 0: capture 1 interrupt flag If channel CC1 is configured as input: CC1IF is set by hardware to inform application that the current value of the counter is captured in LPTIM_CCR1 register. The corresponding interrupt or DMA request is generated if enabled. The CC1OF flag is set if the CC1IF flag was already high..

ARRM

Bit 1: Autoreload match ARRM is set by hardware to inform application that LPTIM_CNT registers value reached the LPTIM_ARR registers value. ARRM flag can be cleared by writing 1 to the ARRMCF bit in the LPTIM_ICR register..

EXTTRIG

Bit 2: External trigger edge event EXTTRIG is set by hardware to inform application that a valid edge on the selected external trigger input has occurred. If the trigger is ignored because the timer has already started, then this flag is not set. EXTTRIG flag can be cleared by writing 1 to the EXTTRIGCF bit in the LPTIM_ICR register..

ARROK

Bit 4: Autoreload register update OK ARROK is set by hardware to inform application that the APB bus write operation to the LPTIM_ARR register has been successfully completed. ARROK flag can be cleared by writing 1 to the ARROKCF bit in the LPTIM_ICR register..

UP

Bit 5: Counter direction change down to up In Encoder mode, UP bit is set by hardware to inform application that the counter direction has changed from down to up. UP flag can be cleared by writing 1 to the UPCF bit in the LPTIM_ICR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

DOWN

Bit 6: Counter direction change up to down In Encoder mode, DOWN bit is set by hardware to inform application that the counter direction has changed from up to down. DOWN flag can be cleared by writing 1 to the DOWNCF bit in the LPTIM_ICR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

UE

Bit 7: LPTIM update event occurred UE is set by hardware to inform application that an update event was generated. UE flag can be cleared by writing 1 to the UECF bit in the LPTIM_ICR register..

REPOK

Bit 8: Repetition register update OK REPOK is set by hardware to inform application that the APB bus write operation to the LPTIM_RCR register has been successfully completed. REPOK flag can be cleared by writing 1 to the REPOKCF bit in the LPTIM_ICR register..

CC2IF

Bit 9: Capture 2 interrupt flag If channel CC2 is configured as input: CC2IF is set by hardware to inform application that the current value of the counter is captured in LPTIM_CCR2 register. The corresponding interrupt or DMA request is generated if enabled. The CC2OF flag is set if the CC2IF flag was already high. Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3IF

Bit 10: Capture 3 interrupt flag If channel CC3 is configured as input: CC3IF is set by hardware to inform application that the current value of the counter is captured in LPTIM_CCR3 register. The corresponding interrupt or DMA request is generated if enabled. The CC3OF flag is set if the CC3IF flag was already high. Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4IF

Bit 11: Capture 4 interrupt flag If channel CC4 is configured as input: CC4IF is set by hardware to inform application that the current value of the counter is captured in LPTIM_CCR4 register. The corresponding interrupt or DMA request is generated if enabled. The CC4OF flag is set if the CC4IF flag was already high. Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

CC1OF

Bit 12: Capture 1 over-capture flag This flag is set by hardware only when the corresponding channel is configured in input capture mode. It is cleared by software by writing 1 to the CC1OCF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 1 channel this bit is reserved. Refer to Section125.3..

CC2OF

Bit 13: Capture 2 over-capture flag This flag is set by hardware only when the corresponding channel is configured in input capture mode. It is cleared by software by writing 1 to the CC2OCF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3OF

Bit 14: Capture 3 over-capture flag This flag is set by hardware only when the corresponding channel is configured in input capture mode. It is cleared by software by writing 1 to the CC3OCF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4OF

Bit 15: Capture 4 over-capture flag This flag is set by hardware only when the corresponding channel is configured in input capture mode. It is cleared by software by writing 1 to the CC4OCF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

DIEROK

Bit 24: Interrupt enable register update OK DIEROK is set by hardware to inform application that the APB bus write operation to the LPTIM_DIER register has been successfully completed. DIEROK flag can be cleared by writing 1 to the DIEROKCF bit in the LPTIM_ICR register..

LPTIM1_ISR_OUTPUT

LPTIM1 interrupt and status register [alternate]

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

16/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
DIEROK
r
CMP4OK
r
CMP3OK
r
CMP2OK
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC4IF
r
CC3IF
r
CC2IF
r
REPOK
r
UE
r
DOWN
r
UP
r
ARROK
r
CMP1OK
r
EXTTRIG
r
ARRM
r
CC1IF
r
Toggle fields

CC1IF

Bit 0: Compare 1 interrupt flag If channel CC1 is configured as output: The CC1IF flag is set by hardware to inform application that LPTIM_CNT register value matches the compare register's value. CC1IF flag can be cleared by writing 1 to the CC1CF bit in the LPTIM_ICR register..

ARRM

Bit 1: Autoreload match ARRM is set by hardware to inform application that LPTIM_CNT registers value reached the LPTIM_ARR registers value. ARRM flag can be cleared by writing 1 to the ARRMCF bit in the LPTIM_ICR register..

EXTTRIG

Bit 2: External trigger edge event EXTTRIG is set by hardware to inform application that a valid edge on the selected external trigger input has occurred. If the trigger is ignored because the timer has already started, then this flag is not set. EXTTRIG flag can be cleared by writing 1 to the EXTTRIGCF bit in the LPTIM_ICR register..

CMP1OK

Bit 3: Compare register 1 update OK CMP1OK is set by hardware to inform application that the APB bus write operation to the LPTIM_CCR1 register has been successfully completed. CMP1OK flag can be cleared by writing 1 to the CMP1OKCF bit in the LPTIM_ICR register..

ARROK

Bit 4: Autoreload register update OK ARROK is set by hardware to inform application that the APB bus write operation to the LPTIM_ARR register has been successfully completed. ARROK flag can be cleared by writing 1 to the ARROKCF bit in the LPTIM_ICR register..

UP

Bit 5: Counter direction change down to up In Encoder mode, UP bit is set by hardware to inform application that the counter direction has changed from down to up. UP flag can be cleared by writing 1 to the UPCF bit in the LPTIM_ICR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

DOWN

Bit 6: Counter direction change up to down In Encoder mode, DOWN bit is set by hardware to inform application that the counter direction has changed from up to down. DOWN flag can be cleared by writing 1 to the DOWNCF bit in the LPTIM_ICR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

UE

Bit 7: LPTIM update event occurred UE is set by hardware to inform application that an update event was generated. The corresponding interrupt or DMA request is generated if enabled. UE flag can be cleared by writing 1 to the UECF bit in the LPTIM_ICR register. The UE flag is automatically cleared by hardware once the LPTIM_ARR register is written by any bus master like CPU or DMA..

REPOK

Bit 8: Repetition register update OK REPOK is set by hardware to inform application that the APB bus write operation to the LPTIM_RCR register has been successfully completed. REPOK flag can be cleared by writing 1 to the REPOKCF bit in the LPTIM_ICR register..

CC2IF

Bit 9: Compare 2 interrupt flag If channel CC2 is configured as output: The CC2IF flag is set by hardware to inform application that LPTIM_CNT register value matches the compare register's value. CC2IF flag can be cleared by writing 1 to the CC2CF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3IF

Bit 10: Compare 3 interrupt flag If channel CC3 is configured as output: The CC3IF flag is set by hardware to inform application that LPTIM_CNT register value matches the compare register's value. CC3IF flag can be cleared by writing 1 to the CC3CF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4IF

Bit 11: Compare 4 interrupt flag If channel CC4 is configured as output: The CC4IF flag is set by hardware to inform application that LPTIM_CNT register value matches the compare register's value. CC4IF flag can be cleared by writing 1 to the CC4CF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

CMP2OK

Bit 19: Compare register 2 update OK CMP2OK is set by hardware to inform application that the APB bus write operation to the LPTIM_CCR2 register has been successfully completed. CMP2OK flag can be cleared by writing 1 to the CMP2OKCF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CMP3OK

Bit 20: Compare register 3 update OK CMP3OK is set by hardware to inform application that the APB bus write operation to the LPTIM_CCR3 register has been successfully completed. CMP3OK flag can be cleared by writing 1 to the CMP3OKCF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CMP4OK

Bit 21: Compare register 4 update OK CMP4OK is set by hardware to inform application that the APB bus write operation to the LPTIM_CCR4 register has been successfully completed. CMP4OK flag can be cleared by writing 1 to the CMP4OKCF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

DIEROK

Bit 24: Interrupt enable register update OK DIEROK is set by hardware to inform application that the APB bus write operation to the LPTIM_DIER register has been successfully completed. DIEROK flag can be cleared by writing 1 to the DIEROKCF bit in the LPTIM_ICR register..

LPTIM1_ICR_INPUT

LPTIM1 interrupt clear register [alternate]

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
DIEROKCF
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC4OCF
w
CC3OCF
w
CC2OCF
w
CC1OCF
w
CC4CF
w
CC3CF
w
CC2CF
w
REPOKCF
w
UECF
w
DOWNCF
w
UPCF
w
ARROKCF
w
EXTTRIGCF
w
ARRMCF
w
CC1CF
w
Toggle fields

CC1CF

Bit 0: Capture/compare 1 clear flag Writing 1 to this bit clears the CC1IF flag in the LPTIM_ISR register..

ARRMCF

Bit 1: Autoreload match clear flag Writing 1 to this bit clears the ARRM flag in the LPTIM_ISR register.

EXTTRIGCF

Bit 2: External trigger valid edge clear flag Writing 1 to this bit clears the EXTTRIG flag in the LPTIM_ISR register.

ARROKCF

Bit 4: Autoreload register update OK clear flag Writing 1 to this bit clears the ARROK flag in the LPTIM_ISR register.

UPCF

Bit 5: Direction change to UP clear flag Writing 1 to this bit clear the UP flag in the LPTIM_ISR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

DOWNCF

Bit 6: Direction change to down clear flag Writing 1 to this bit clear the DOWN flag in the LPTIM_ISR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

UECF

Bit 7: Update event clear flag Writing 1 to this bit clear the UE flag in the LPTIM_ISR register..

REPOKCF

Bit 8: Repetition register update OK clear flag Writing 1 to this bit clears the REPOK flag in the LPTIM_ISR register..

CC2CF

Bit 9: Capture/compare 2 clear flag Writing 1 to this bit clears the CC2IF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3CF

Bit 10: Capture/compare 3 clear flag Writing 1 to this bit clears the CC3IF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4CF

Bit 11: Capture/compare 4 clear flag Writing 1 to this bit clears the CC4IF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

CC1OCF

Bit 12: Capture/compare 1 over-capture clear flag Writing 1 to this bit clears the CC1OF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 1 channel this bit is reserved. Refer to Section125.3..

CC2OCF

Bit 13: Capture/compare 2 over-capture clear flag Writing 1 to this bit clears the CC2OF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3OCF

Bit 14: Capture/compare 3 over-capture clear flag Writing 1 to this bit clears the CC3OF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4OCF

Bit 15: Capture/compare 4 over-capture clear flag Writing 1 to this bit clears the CC4OF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

DIEROKCF

Bit 24: Interrupt enable register update OK clear flag Writing 1 to this bit clears the DIEROK flag in the LPTIM_ISR register..

LPTIM1_ICR_OUTPUT

LPTIM1 interrupt clear register [alternate]

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
DIEROKCF
w
CMP4OKCF
w
CMP3OKCF
w
CMP2OKCF
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC4CF
w
CC3CF
w
CC2CF
w
REPOKCF
w
UECF
w
DOWNCF
w
UPCF
w
ARROKCF
w
CMP1OKCF
w
EXTTRIGCF
w
ARRMCF
w
CC1CF
w
Toggle fields

CC1CF

Bit 0: Capture/compare 1 clear flag Writing 1 to this bit clears the CC1IF flag in the LPTIM_ISR register..

ARRMCF

Bit 1: Autoreload match clear flag Writing 1 to this bit clears the ARRM flag in the LPTIM_ISR register.

EXTTRIGCF

Bit 2: External trigger valid edge clear flag Writing 1 to this bit clears the EXTTRIG flag in the LPTIM_ISR register.

CMP1OKCF

Bit 3: Compare register 1 update OK clear flag Writing 1 to this bit clears the CMP1OK flag in the LPTIM_ISR register..

ARROKCF

Bit 4: Autoreload register update OK clear flag Writing 1 to this bit clears the ARROK flag in the LPTIM_ISR register.

UPCF

Bit 5: Direction change to UP clear flag Writing 1 to this bit clear the UP flag in the LPTIM_ISR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

DOWNCF

Bit 6: Direction change to down clear flag Writing 1 to this bit clear the DOWN flag in the LPTIM_ISR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

UECF

Bit 7: Update event clear flag Writing 1 to this bit clear the UE flag in the LPTIM_ISR register..

REPOKCF

Bit 8: Repetition register update OK clear flag Writing 1 to this bit clears the REPOK flag in the LPTIM_ISR register..

CC2CF

Bit 9: Capture/compare 2 clear flag Writing 1 to this bit clears the CC2IF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3CF

Bit 10: Capture/compare 3 clear flag Writing 1 to this bit clears the CC3IF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4CF

Bit 11: Capture/compare 4 clear flag Writing 1 to this bit clears the CC4IF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

CMP2OKCF

Bit 19: Compare register 2 update OK clear flag Writing 1 to this bit clears the CMP2OK flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CMP3OKCF

Bit 20: Compare register 3 update OK clear flag Writing 1 to this bit clears the CMP3OK flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CMP4OKCF

Bit 21: Compare register 4 update OK clear flag Writing 1 to this bit clears the CMP4OK flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

DIEROKCF

Bit 24: Interrupt enable register update OK clear flag Writing 1 to this bit clears the DIEROK flag in the LPTIM_ISR register..

LPTIM1_DIER_INPUT

LPTIM1 interrupt enable register [alternate]

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/20 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CC4DE
rw
CC3DE
rw
CC2DE
rw
UEDE
rw
CC1DE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC4OIE
rw
CC3OIE
rw
CC2OIE
rw
CC1OIE
rw
CC4IE
rw
CC3IE
rw
CC2IE
rw
REPOKIE
rw
UEIE
rw
DOWNIE
rw
UPIE
rw
ARROKIE
rw
EXTTRIGIE
rw
ARRMIE
rw
CC1IE
rw
Toggle fields

CC1IE

Bit 0: Capture/compare 1 interrupt enable.

ARRMIE

Bit 1: Autoreload match Interrupt Enable.

EXTTRIGIE

Bit 2: External trigger valid edge Interrupt Enable.

ARROKIE

Bit 4: Autoreload register update OK Interrupt Enable.

UPIE

Bit 5: Direction change to UP Interrupt Enable Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

DOWNIE

Bit 6: Direction change to down Interrupt Enable Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

UEIE

Bit 7: Update event interrupt enable.

REPOKIE

Bit 8: Repetition register update OK interrupt Enable.

CC2IE

Bit 9: Capture/compare 2 interrupt enable Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3IE

Bit 10: Capture/compare 3 interrupt enable Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4IE

Bit 11: Capture/compare 4 interrupt enable Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

CC1OIE

Bit 12: Capture/compare 1 over-capture interrupt enable Note: If LPTIM does not implement at least 1 channel this bit is reserved. Refer to Section125.3..

CC2OIE

Bit 13: Capture/compare 2 over-capture interrupt enable Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3OIE

Bit 14: Capture/compare 3 over-capture interrupt enable Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4OIE

Bit 15: Capture/compare 4 over-capture interrupt enable Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

CC1DE

Bit 16: Capture/compare 1 DMA request enable Note: If LPTIM does not implement at least 1 channel this bit is reserved. Refer to Section125.3..

UEDE

Bit 23: Update event DMA request enable Note: If LPTIM does not implement at least 1 channel this bit is reserved. Refer to Section125.3..

CC2DE

Bit 25: Capture/compare 2 DMA request enable Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3DE

Bit 26: Capture/compare 3 DMA request enable Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4DE

Bit 27: Capture/compare 4 DMA request enable Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

LPTIM1_DIER_OUTPUT

LPTIM1 interrupt enable register [alternate]

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
UEDE
rw
CMP4OKIE
rw
CMP3OKIE
rw
CMP2OKIE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC4IE
rw
CC3IE
rw
CC2IE
rw
REPOKIE
rw
UEIE
rw
DOWNIE
rw
UPIE
rw
ARROKIE
rw
CMP1OKIE
rw
EXTTRIGIE
rw
ARRMIE
rw
CC1IE
rw
Toggle fields

CC1IE

Bit 0: Capture/compare 1 interrupt enable.

ARRMIE

Bit 1: Autoreload match Interrupt Enable.

EXTTRIGIE

Bit 2: External trigger valid edge Interrupt Enable.

CMP1OKIE

Bit 3: Compare register 1 update OK interrupt enable.

ARROKIE

Bit 4: Autoreload register update OK Interrupt Enable.

UPIE

Bit 5: Direction change to UP Interrupt Enable Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

DOWNIE

Bit 6: Direction change to down Interrupt Enable Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

UEIE

Bit 7: Update event interrupt enable.

REPOKIE

Bit 8: Repetition register update OK interrupt Enable.

CC2IE

Bit 9: Capture/compare 2 interrupt enable Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3IE

Bit 10: Capture/compare 3 interrupt enable Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4IE

Bit 11: Capture/compare 4 interrupt enable Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

CMP2OKIE

Bit 19: Compare register 2 update OK interrupt enable Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CMP3OKIE

Bit 20: Compare register 3 update OK interrupt enable Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CMP4OKIE

Bit 21: Compare register 4 update OK interrupt enable Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

UEDE

Bit 23: Update event DMA request enable Note: If LPTIM does not implement at least 1 channel this bit is reserved. Refer to Section125.3..

LPTIM1_CFGR

LPTIM configuration register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ENC
rw
COUNTMODE
rw
PRELOAD
rw
WAVE
rw
TIMOUT
rw
TRIGEN
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TRIGSEL
rw
PRESC
rw
TRGFLT
rw
CKFLT
rw
CKPOL
rw
CKSEL
rw
Toggle fields

CKSEL

Bit 0: Clock selector The CKSEL bit selects which clock source the LPTIM uses:.

CKPOL

Bits 1-2: Clock Polarity When the LPTIM is clocked by an external clock source, CKPOL bits is used to configure the active edge or edges used by the counter: If the LPTIM is configured in Encoder mode (ENC bit is set), the encoder sub-mode 1 is active. If the LPTIM is configured in Encoder mode (ENC bit is set), the encoder sub-mode 2 is active. If the LPTIM is configured in Encoder mode (ENC bit is set), the encoder sub-mode 3 is active. Refer to Section125.4.15: Encoder mode for more details about Encoder mode sub-modes..

CKFLT

Bits 3-4: Configurable digital filter for external clock The CKFLT value sets the number of consecutive equal samples that are detected when a level change occurs on an external clock signal before it is considered as a valid level transition. An internal clock source must be present to use this feature.

TRGFLT

Bits 6-7: Configurable digital filter for trigger The TRGFLT value sets the number of consecutive equal samples that are detected when a level change occurs on an internal trigger before it is considered as a valid level transition. An internal clock source must be present to use this feature.

PRESC

Bits 9-11: Clock prescaler The PRESC bits configure the prescaler division factor. It can be one among the following division factors:.

TRIGSEL

Bits 13-15: Trigger selector The TRIGSEL bits select the trigger source that serves as a trigger event for the LPTIM among the below 8 available sources: See Section125.4.3: LPTIM input and trigger mapping for details..

TRIGEN

Bits 17-18: Trigger enable and polarity The TRIGEN bits controls whether the LPTIM counter is started by an external trigger or not. If the external trigger option is selected, three configurations are possible for the trigger active edge:.

TIMOUT

Bit 19: Timeout enable The TIMOUT bit controls the Timeout feature.

WAVE

Bit 20: Waveform shape The WAVE bit controls the output shape.

PRELOAD

Bit 22: Registers update mode The PRELOAD bit controls the LPTIM1_ARR, LPTIM1_RCR and the LPTIM1_CCRx registers update modality.

COUNTMODE

Bit 23: counter mode enabled The COUNTMODE bit selects which clock source is used by the LPTIM to clock the counter:.

ENC

Bit 24: Encoder mode enable The ENC bit controls the Encoder mode Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

LPTIM1_CR

LPTIM control register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

0/5 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RSTARE
rw
COUNTRST
rw
CNTSTRT
rw
SNGSTRT
rw
ENABLE
rw
Toggle fields

ENABLE

Bit 0: LPTIM enable The ENABLE bit is set and cleared by software..

SNGSTRT

Bit 1: LPTIM start in Single mode This bit is set by software and cleared by hardware. In case of software start (TRIGEN[1:0] = 00), setting this bit starts the LPTIM in single pulse mode. If the software start is disabled (TRIGEN[1:0] different than 00), setting this bit starts the LPTIM in single pulse mode as soon as an external trigger is detected. If this bit is set when the LPTIM is in continuous counting mode, then the LPTIM stops at the following match between LPTIM1_ARR and LPTIM1_CNT registers. This bit can only be set when the LPTIM is enabled. It is automatically reset by hardware..

CNTSTRT

Bit 2: Timer start in Continuous mode This bit is set by software and cleared by hardware. In case of software start (TRIGEN[1:0] = 00), setting this bit starts the LPTIM in Continuous mode. If the software start is disabled (TRIGEN[1:0] different than 00), setting this bit starts the timer in Continuous mode as soon as an external trigger is detected. If this bit is set when a single pulse mode counting is ongoing, then the timer does not stop at the next match between the LPTIM1_ARR and LPTIM1_CNT registers and the LPTIM counter keeps counting in Continuous mode. This bit can be set only when the LPTIM is enabled. It is automatically reset by hardware..

COUNTRST

Bit 3: Counter reset This bit is set by software and cleared by hardware. When set to '1' this bit triggers a synchronous reset of the LPTIM1_CNT counter register. Due to the synchronous nature of this reset, it only takes place after a synchronization delay of 3 LPTimer core clock cycles (LPTimer core clock may be different from APB clock). This bit can be set only when the LPTIM is enabled. It is automatically reset by hardware. COUNTRST must never be set to '1' by software before it is already cleared to '0' by hardware. Software must consequently check that COUNTRST bit is already cleared to '0' before attempting to set it to '1'..

RSTARE

Bit 4: Reset after read enable This bit is set and cleared by software. When RSTARE is set to '1', any read access to LPTIM1_CNT register asynchronously resets LPTIM1_CNT register content. This bit can be set only when the LPTIM is enabled..

LPTIM1_CCR1

LPTIM compare register 1

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR1
rw
Toggle fields

CCR1

Bits 0-15: Capture/compare 1 value If channel CC1 is configured as output: CCR1 is the value to be loaded in the capture/compare 1 register. Depending on the PRELOAD option, the CCR1 register is immediately updated if the PRELOAD bit is reset and updated at next LPTIM update event if PREOAD bit is reset. The capture/compare register 1 contains the value to be compared to the counter LPTIM1_CNT and signaled on OC1 output. If channel CC1 is configured as input: CCR1 becomes read-only, it contains the counter value transferred by the last input capture 1 event. The LPTIM1_CCR1 register is read-only and cannot be programmed..

LPTIM1_ARR

LPTIM autoreload register

Offset: 0x18, size: 32, reset: 0x00000001, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ARR
rw
Toggle fields

ARR

Bits 0-15: Auto reload value ARR is the autoreload value for the LPTIM. This value must be strictly greater than the CCRx[15:0] value..

LPTIM1_CNT

LPTIM counter register

Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CNT
r
Toggle fields

CNT

Bits 0-15: Counter value When the LPTIM is running with an asynchronous clock, reading the LPTIM1_CNT register may return unreliable values. So in this case it is necessary to perform two consecutive read accesses and verify that the two returned values are identical..

LPTIM1_CFGR2

LPTIM configuration register 2

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

0/4 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
IC2SEL
rw
IC1SEL
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IN2SEL
rw
IN1SEL
rw
Toggle fields

IN1SEL

Bits 0-1: LPTIM input 1 selection The IN1SEL bits control the LPTIM input 1 multiplexer, which connects LPTIM input 1 to one of the available inputs. For connection details refer to Section125.4.3: LPTIM input and trigger mapping..

IN2SEL

Bits 4-5: LPTIM input 2 selection The IN2SEL bits control the LPTIM input 2 multiplexer, which connects LPTIM input 2 to one of the available inputs. For connection details refer to Section125.4.3: LPTIM input and trigger mapping..

IC1SEL

Bits 16-17: LPTIM input capture 1 selection The IC1SEL bits control the LPTIM Input capture 1 multiplexer, which connects LPTIM Input capture 1 to one of the available inputs. For connection details refer to Section125.4.3: LPTIM input and trigger mapping..

IC2SEL

Bits 20-21: LPTIM input capture 2 selection The IC2SEL bits control the LPTIM Input capture 2 multiplexer, which connects LPTIM Input capture 2 to one of the available inputs. For connection details refer to Section125.4.3: LPTIM input and trigger mapping..

LPTIM1_RCR

LPTIM repetition register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
REP
rw
Toggle fields

REP

Bits 0-7: Repetition register value REP is the repetition value for the LPTIM..

LPTIM1_CCMR1

LPTIM capture/compare mode register 1

Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified

0/10 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
IC2F
rw
IC2PSC
rw
CC2P
rw
CC2E
rw
CC2SEL
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IC1F
rw
IC1PSC
rw
CC1P
rw
CC1E
rw
CC1SEL
rw
Toggle fields

CC1SEL

Bit 0: Capture/compare 1 selection This bitfield defines the direction of the channel input (capture) or output mode..

CC1E

Bit 1: Capture/compare 1 output enable. This bit determines if a capture of the counter value can actually be done into the input capture/compare register 1 (LPTIM1_CCR1) or not..

CC1P

Bits 2-3: Capture/compare 1 output polarity. Only bit2 is used to set polarity when output mode is enabled, bit3 is don't care. This field is used to select the IC1 polarity for capture operations..

IC1PSC

Bits 8-9: Input capture 1 prescaler This bitfield defines the ratio of the prescaler acting on the CC1 input (IC1)..

IC1F

Bits 12-13: Input capture 1 filter This bitfield defines the number of consecutive equal samples that are detected when a level change occurs on an external input capture signal before it is considered as a valid level transition. An internal clock source must be present to use this feature..

CC2SEL

Bit 16: Capture/compare 2 selection This bitfield defines the direction of the channel, input (capture) or output mode..

CC2E

Bit 17: Capture/compare 2 output enable. This bit determines if a capture of the counter value can actually be done into the input capture/compare register 2 (LPTIM1_CCR2) or not..

CC2P

Bits 18-19: Capture/compare 2 output polarity. Only bit2 is used to set polarity when output mode is enabled, bit3 is don't care. This field is used to select the IC2 polarity for capture operations..

IC2PSC

Bits 24-25: Input capture 2 prescaler This bitfield defines the ratio of the prescaler acting on the CC2 input (IC2)..

IC2F

Bits 28-29: Input capture 2 filter This bitfield defines the number of consecutive equal samples that are detected when a level change occurs on an external input capture signal before it is considered as a valid level transition. An internal clock source must be present to use this feature..

LPTIM1_CCMR2

LPTIM capture/compare mode register 2

Offset: 0x30, size: 32, reset: 0x00000000, access: Unspecified

0/10 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
IC4F
rw
IC4PSC
rw
CC4P
rw
CC4E
rw
CC4SEL
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IC3F
rw
IC3PSC
rw
CC3P
rw
CC3E
rw
CC3SEL
rw
Toggle fields

CC3SEL

Bit 0: Capture/compare 3 selection This bitfield defines the direction of the channel input (capture) or output mode..

CC3E

Bit 1: Capture/compare 3 output enable. Condition: CC3 as output: Condition: CC3 as input: This bit determines if a capture of the counter value can actually be done into the input capture/compare register 3 (LPTIM1_CCR3) or not..

CC3P

Bits 2-3: Capture/compare 3 output polarity. Condition: CC3 as output: Only bit2 is used to set polarity when output mode is enabled, bit3 is don't care. Condition: CC3 as input: This field is used to select the IC3 polarity for capture operations..

IC3PSC

Bits 8-9: Input capture 3 prescaler This bitfield defines the ratio of the prescaler acting on the CC3 input (IC3)..

IC3F

Bits 12-13: Input capture 3 filter This bitfield defines the number of consecutive equal samples that should be detected when a level change occurs on an external input capture signal before it is considered as a valid level transition. An internal clock source must be present to use this feature..

CC4SEL

Bit 16: Capture/compare 4 selection This bitfield defines the direction of the channel, input (capture) or output mode..

CC4E

Bit 17: Capture/compare 4 output enable. Condition: CC4 as output: Condition: CC4 as input: This bit determines if a capture of the counter value can actually be done into the input capture/compare register 4 (LPTIM1_CCR4) or not..

CC4P

Bits 18-19: Capture/compare 4 output polarity. Condition: CC4 as output: Only bit2 is used to set polarity when output mode is enabled, bit3 is don't care. Condition: CC4 as input: This field is used to select the IC4 polarity for capture operations..

IC4PSC

Bits 24-25: Input capture 4 prescaler This bitfield defines the ratio of the prescaler acting on the CC4 input (IC4)..

IC4F

Bits 28-29: Input capture 4 filter This bitfield defines the number of consecutive equal samples that should be detected when a level change occurs on an external input capture signal before it is considered as a valid level transition. An internal clock source must be present to use this feature..

LPTIM1_CCR2

LPTIM compare register 2

Offset: 0x34, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR2
rw
Toggle fields

CCR2

Bits 0-15: Capture/compare 2 value If channel CC2 is configured as output: CCR2 is the value to be loaded in the capture/compare 2 register. Depending on the PRELOAD option, the CCR2 register is immediately updated if the PRELOAD bit is reset and updated at next LPTIM update event if PREOAD bit is reset. The capture/compare register 2 contains the value to be compared to the counter LPTIM1_CNT and signaled on OC2 output. If channel CC2 is configured as input: CCR2 becomes read-only, it contains the counter value transferred by the last input capture 2 event. The LPTIM1_CCR2 register is read-only and cannot be programmed..

LPTIM1_CCR3

LPTIM compare register 3

Offset: 0x38, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR3
rw
Toggle fields

CCR3

Bits 0-15: Capture/compare 3 value If channel CC3 is configured as output: CCR3 is the value to be loaded in the capture/compare 3 register. Depending on the PRELOAD option, the CCR3 register is immediately updated if the PRELOAD bit is reset and updated at next LPTIM update event if PREOAD bit is reset. The capture/compare register 3 contains the value to be compared to the counter LPTIM1_CNT and signaled on OC3 output. If channel CC3 is configured as input: CCR3 becomes read-only, it contains the counter value transferred by the last input capture 3 event. The LPTIM1_CCR3 register is read-only and cannot be programmed..

LPTIM1_CCR4

LPTIM compare register 4

Offset: 0x3c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR4
rw
Toggle fields

CCR4

Bits 0-15: Capture/compare 4 value If channel CC4 is configured as output: CCR4 is the value to be loaded in the capture/compare 4 register. Depending on the PRELOAD option, the CCR4 register is immediately updated if the PRELOAD bit is reset and updated at next LPTIM update event if PREOAD bit is reset. The capture/compare register 4 contains the value to be compared to the counter LPTIM1_CNT and signaled on OC4 output. If channel CC4 is configured as input: CCR4 becomes read-only, it contains the counter value transferred by the last input capture 4 event. The LPTIM1_CCR4 register is read-only and cannot be programmed..

LPTIM2

0x40009400: LPTIM2 address block description

33/148 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 LPTIM2_ISR_INPUT
0x0 LPTIM2_ISR_OUTPUT
0x4 LPTIM2_ICR_INPUT
0x4 LPTIM2_ICR_OUTPUT
0x8 LPTIM2_DIER_INPUT
0x8 LPTIM2_DIER_OUTPUT
0xc LPTIM2_CFGR
0x10 LPTIM2_CR
0x14 LPTIM2_CCR1
0x18 LPTIM2_ARR
0x1c LPTIM2_CNT
0x24 LPTIM2_CFGR2
0x28 LPTIM2_RCR
0x2c LPTIM2_CCMR1
0x30 LPTIM2_CCMR2
0x34 LPTIM2_CCR2
0x38 LPTIM2_CCR3
0x3c LPTIM2_CCR4
Toggle registers

LPTIM2_ISR_INPUT

LPTIM2 interrupt and status register [alternate]

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

16/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
DIEROK
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC4OF
r
CC3OF
r
CC2OF
r
CC1OF
r
CC4IF
r
CC3IF
r
CC2IF
r
REPOK
r
UE
r
DOWN
r
UP
r
ARROK
r
EXTTRIG
r
ARRM
r
CC1IF
r
Toggle fields

CC1IF

Bit 0: capture 1 interrupt flag If channel CC1 is configured as input: CC1IF is set by hardware to inform application that the current value of the counter is captured in LPTIM_CCR1 register. The corresponding interrupt or DMA request is generated if enabled. The CC1OF flag is set if the CC1IF flag was already high..

ARRM

Bit 1: Autoreload match ARRM is set by hardware to inform application that LPTIM_CNT registers value reached the LPTIM_ARR registers value. ARRM flag can be cleared by writing 1 to the ARRMCF bit in the LPTIM_ICR register..

EXTTRIG

Bit 2: External trigger edge event EXTTRIG is set by hardware to inform application that a valid edge on the selected external trigger input has occurred. If the trigger is ignored because the timer has already started, then this flag is not set. EXTTRIG flag can be cleared by writing 1 to the EXTTRIGCF bit in the LPTIM_ICR register..

ARROK

Bit 4: Autoreload register update OK ARROK is set by hardware to inform application that the APB bus write operation to the LPTIM_ARR register has been successfully completed. ARROK flag can be cleared by writing 1 to the ARROKCF bit in the LPTIM_ICR register..

UP

Bit 5: Counter direction change down to up In Encoder mode, UP bit is set by hardware to inform application that the counter direction has changed from down to up. UP flag can be cleared by writing 1 to the UPCF bit in the LPTIM_ICR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

DOWN

Bit 6: Counter direction change up to down In Encoder mode, DOWN bit is set by hardware to inform application that the counter direction has changed from up to down. DOWN flag can be cleared by writing 1 to the DOWNCF bit in the LPTIM_ICR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

UE

Bit 7: LPTIM update event occurred UE is set by hardware to inform application that an update event was generated. UE flag can be cleared by writing 1 to the UECF bit in the LPTIM_ICR register..

REPOK

Bit 8: Repetition register update OK REPOK is set by hardware to inform application that the APB bus write operation to the LPTIM_RCR register has been successfully completed. REPOK flag can be cleared by writing 1 to the REPOKCF bit in the LPTIM_ICR register..

CC2IF

Bit 9: Capture 2 interrupt flag If channel CC2 is configured as input: CC2IF is set by hardware to inform application that the current value of the counter is captured in LPTIM_CCR2 register. The corresponding interrupt or DMA request is generated if enabled. The CC2OF flag is set if the CC2IF flag was already high. Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3IF

Bit 10: Capture 3 interrupt flag If channel CC3 is configured as input: CC3IF is set by hardware to inform application that the current value of the counter is captured in LPTIM_CCR3 register. The corresponding interrupt or DMA request is generated if enabled. The CC3OF flag is set if the CC3IF flag was already high. Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4IF

Bit 11: Capture 4 interrupt flag If channel CC4 is configured as input: CC4IF is set by hardware to inform application that the current value of the counter is captured in LPTIM_CCR4 register. The corresponding interrupt or DMA request is generated if enabled. The CC4OF flag is set if the CC4IF flag was already high. Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

CC1OF

Bit 12: Capture 1 over-capture flag This flag is set by hardware only when the corresponding channel is configured in input capture mode. It is cleared by software by writing 1 to the CC1OCF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 1 channel this bit is reserved. Refer to Section125.3..

CC2OF

Bit 13: Capture 2 over-capture flag This flag is set by hardware only when the corresponding channel is configured in input capture mode. It is cleared by software by writing 1 to the CC2OCF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3OF

Bit 14: Capture 3 over-capture flag This flag is set by hardware only when the corresponding channel is configured in input capture mode. It is cleared by software by writing 1 to the CC3OCF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4OF

Bit 15: Capture 4 over-capture flag This flag is set by hardware only when the corresponding channel is configured in input capture mode. It is cleared by software by writing 1 to the CC4OCF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

DIEROK

Bit 24: Interrupt enable register update OK DIEROK is set by hardware to inform application that the APB bus write operation to the LPTIM_DIER register has been successfully completed. DIEROK flag can be cleared by writing 1 to the DIEROKCF bit in the LPTIM_ICR register..

LPTIM2_ISR_OUTPUT

LPTIM2 interrupt and status register [alternate]

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

16/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
DIEROK
r
CMP4OK
r
CMP3OK
r
CMP2OK
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC4IF
r
CC3IF
r
CC2IF
r
REPOK
r
UE
r
DOWN
r
UP
r
ARROK
r
CMP1OK
r
EXTTRIG
r
ARRM
r
CC1IF
r
Toggle fields

CC1IF

Bit 0: Compare 1 interrupt flag If channel CC1 is configured as output: The CC1IF flag is set by hardware to inform application that LPTIM_CNT register value matches the compare register's value. CC1IF flag can be cleared by writing 1 to the CC1CF bit in the LPTIM_ICR register..

ARRM

Bit 1: Autoreload match ARRM is set by hardware to inform application that LPTIM_CNT registers value reached the LPTIM_ARR registers value. ARRM flag can be cleared by writing 1 to the ARRMCF bit in the LPTIM_ICR register..

EXTTRIG

Bit 2: External trigger edge event EXTTRIG is set by hardware to inform application that a valid edge on the selected external trigger input has occurred. If the trigger is ignored because the timer has already started, then this flag is not set. EXTTRIG flag can be cleared by writing 1 to the EXTTRIGCF bit in the LPTIM_ICR register..

CMP1OK

Bit 3: Compare register 1 update OK CMP1OK is set by hardware to inform application that the APB bus write operation to the LPTIM_CCR1 register has been successfully completed. CMP1OK flag can be cleared by writing 1 to the CMP1OKCF bit in the LPTIM_ICR register..

ARROK

Bit 4: Autoreload register update OK ARROK is set by hardware to inform application that the APB bus write operation to the LPTIM_ARR register has been successfully completed. ARROK flag can be cleared by writing 1 to the ARROKCF bit in the LPTIM_ICR register..

UP

Bit 5: Counter direction change down to up In Encoder mode, UP bit is set by hardware to inform application that the counter direction has changed from down to up. UP flag can be cleared by writing 1 to the UPCF bit in the LPTIM_ICR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

DOWN

Bit 6: Counter direction change up to down In Encoder mode, DOWN bit is set by hardware to inform application that the counter direction has changed from up to down. DOWN flag can be cleared by writing 1 to the DOWNCF bit in the LPTIM_ICR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

UE

Bit 7: LPTIM update event occurred UE is set by hardware to inform application that an update event was generated. The corresponding interrupt or DMA request is generated if enabled. UE flag can be cleared by writing 1 to the UECF bit in the LPTIM_ICR register. The UE flag is automatically cleared by hardware once the LPTIM_ARR register is written by any bus master like CPU or DMA..

REPOK

Bit 8: Repetition register update OK REPOK is set by hardware to inform application that the APB bus write operation to the LPTIM_RCR register has been successfully completed. REPOK flag can be cleared by writing 1 to the REPOKCF bit in the LPTIM_ICR register..

CC2IF

Bit 9: Compare 2 interrupt flag If channel CC2 is configured as output: The CC2IF flag is set by hardware to inform application that LPTIM_CNT register value matches the compare register's value. CC2IF flag can be cleared by writing 1 to the CC2CF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3IF

Bit 10: Compare 3 interrupt flag If channel CC3 is configured as output: The CC3IF flag is set by hardware to inform application that LPTIM_CNT register value matches the compare register's value. CC3IF flag can be cleared by writing 1 to the CC3CF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4IF

Bit 11: Compare 4 interrupt flag If channel CC4 is configured as output: The CC4IF flag is set by hardware to inform application that LPTIM_CNT register value matches the compare register's value. CC4IF flag can be cleared by writing 1 to the CC4CF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

CMP2OK

Bit 19: Compare register 2 update OK CMP2OK is set by hardware to inform application that the APB bus write operation to the LPTIM_CCR2 register has been successfully completed. CMP2OK flag can be cleared by writing 1 to the CMP2OKCF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CMP3OK

Bit 20: Compare register 3 update OK CMP3OK is set by hardware to inform application that the APB bus write operation to the LPTIM_CCR3 register has been successfully completed. CMP3OK flag can be cleared by writing 1 to the CMP3OKCF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CMP4OK

Bit 21: Compare register 4 update OK CMP4OK is set by hardware to inform application that the APB bus write operation to the LPTIM_CCR4 register has been successfully completed. CMP4OK flag can be cleared by writing 1 to the CMP4OKCF bit in the LPTIM_ICR register. Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

DIEROK

Bit 24: Interrupt enable register update OK DIEROK is set by hardware to inform application that the APB bus write operation to the LPTIM_DIER register has been successfully completed. DIEROK flag can be cleared by writing 1 to the DIEROKCF bit in the LPTIM_ICR register..

LPTIM2_ICR_INPUT

LPTIM2 interrupt clear register [alternate]

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
DIEROKCF
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC4OCF
w
CC3OCF
w
CC2OCF
w
CC1OCF
w
CC4CF
w
CC3CF
w
CC2CF
w
REPOKCF
w
UECF
w
DOWNCF
w
UPCF
w
ARROKCF
w
EXTTRIGCF
w
ARRMCF
w
CC1CF
w
Toggle fields

CC1CF

Bit 0: Capture/compare 1 clear flag Writing 1 to this bit clears the CC1IF flag in the LPTIM_ISR register..

ARRMCF

Bit 1: Autoreload match clear flag Writing 1 to this bit clears the ARRM flag in the LPTIM_ISR register.

EXTTRIGCF

Bit 2: External trigger valid edge clear flag Writing 1 to this bit clears the EXTTRIG flag in the LPTIM_ISR register.

ARROKCF

Bit 4: Autoreload register update OK clear flag Writing 1 to this bit clears the ARROK flag in the LPTIM_ISR register.

UPCF

Bit 5: Direction change to UP clear flag Writing 1 to this bit clear the UP flag in the LPTIM_ISR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

DOWNCF

Bit 6: Direction change to down clear flag Writing 1 to this bit clear the DOWN flag in the LPTIM_ISR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

UECF

Bit 7: Update event clear flag Writing 1 to this bit clear the UE flag in the LPTIM_ISR register..

REPOKCF

Bit 8: Repetition register update OK clear flag Writing 1 to this bit clears the REPOK flag in the LPTIM_ISR register..

CC2CF

Bit 9: Capture/compare 2 clear flag Writing 1 to this bit clears the CC2IF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3CF

Bit 10: Capture/compare 3 clear flag Writing 1 to this bit clears the CC3IF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4CF

Bit 11: Capture/compare 4 clear flag Writing 1 to this bit clears the CC4IF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

CC1OCF

Bit 12: Capture/compare 1 over-capture clear flag Writing 1 to this bit clears the CC1OF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 1 channel this bit is reserved. Refer to Section125.3..

CC2OCF

Bit 13: Capture/compare 2 over-capture clear flag Writing 1 to this bit clears the CC2OF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3OCF

Bit 14: Capture/compare 3 over-capture clear flag Writing 1 to this bit clears the CC3OF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4OCF

Bit 15: Capture/compare 4 over-capture clear flag Writing 1 to this bit clears the CC4OF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

DIEROKCF

Bit 24: Interrupt enable register update OK clear flag Writing 1 to this bit clears the DIEROK flag in the LPTIM_ISR register..

LPTIM2_ICR_OUTPUT

LPTIM2 interrupt clear register [alternate]

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
DIEROKCF
w
CMP4OKCF
w
CMP3OKCF
w
CMP2OKCF
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC4CF
w
CC3CF
w
CC2CF
w
REPOKCF
w
UECF
w
DOWNCF
w
UPCF
w
ARROKCF
w
CMP1OKCF
w
EXTTRIGCF
w
ARRMCF
w
CC1CF
w
Toggle fields

CC1CF

Bit 0: Capture/compare 1 clear flag Writing 1 to this bit clears the CC1IF flag in the LPTIM_ISR register..

ARRMCF

Bit 1: Autoreload match clear flag Writing 1 to this bit clears the ARRM flag in the LPTIM_ISR register.

EXTTRIGCF

Bit 2: External trigger valid edge clear flag Writing 1 to this bit clears the EXTTRIG flag in the LPTIM_ISR register.

CMP1OKCF

Bit 3: Compare register 1 update OK clear flag Writing 1 to this bit clears the CMP1OK flag in the LPTIM_ISR register..

ARROKCF

Bit 4: Autoreload register update OK clear flag Writing 1 to this bit clears the ARROK flag in the LPTIM_ISR register.

UPCF

Bit 5: Direction change to UP clear flag Writing 1 to this bit clear the UP flag in the LPTIM_ISR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

DOWNCF

Bit 6: Direction change to down clear flag Writing 1 to this bit clear the DOWN flag in the LPTIM_ISR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

UECF

Bit 7: Update event clear flag Writing 1 to this bit clear the UE flag in the LPTIM_ISR register..

REPOKCF

Bit 8: Repetition register update OK clear flag Writing 1 to this bit clears the REPOK flag in the LPTIM_ISR register..

CC2CF

Bit 9: Capture/compare 2 clear flag Writing 1 to this bit clears the CC2IF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3CF

Bit 10: Capture/compare 3 clear flag Writing 1 to this bit clears the CC3IF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4CF

Bit 11: Capture/compare 4 clear flag Writing 1 to this bit clears the CC4IF flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

CMP2OKCF

Bit 19: Compare register 2 update OK clear flag Writing 1 to this bit clears the CMP2OK flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CMP3OKCF

Bit 20: Compare register 3 update OK clear flag Writing 1 to this bit clears the CMP3OK flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CMP4OKCF

Bit 21: Compare register 4 update OK clear flag Writing 1 to this bit clears the CMP4OK flag in the LPTIM_ISR register. Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

DIEROKCF

Bit 24: Interrupt enable register update OK clear flag Writing 1 to this bit clears the DIEROK flag in the LPTIM_ISR register..

LPTIM2_DIER_INPUT

LPTIM2 interrupt enable register [alternate]

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/20 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CC4DE
rw
CC3DE
rw
CC2DE
rw
UEDE
rw
CC1DE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC4OIE
rw
CC3OIE
rw
CC2OIE
rw
CC1OIE
rw
CC4IE
rw
CC3IE
rw
CC2IE
rw
REPOKIE
rw
UEIE
rw
DOWNIE
rw
UPIE
rw
ARROKIE
rw
EXTTRIGIE
rw
ARRMIE
rw
CC1IE
rw
Toggle fields

CC1IE

Bit 0: Capture/compare 1 interrupt enable.

ARRMIE

Bit 1: Autoreload match Interrupt Enable.

EXTTRIGIE

Bit 2: External trigger valid edge Interrupt Enable.

ARROKIE

Bit 4: Autoreload register update OK Interrupt Enable.

UPIE

Bit 5: Direction change to UP Interrupt Enable Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

DOWNIE

Bit 6: Direction change to down Interrupt Enable Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

UEIE

Bit 7: Update event interrupt enable.

REPOKIE

Bit 8: Repetition register update OK interrupt Enable.

CC2IE

Bit 9: Capture/compare 2 interrupt enable Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3IE

Bit 10: Capture/compare 3 interrupt enable Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4IE

Bit 11: Capture/compare 4 interrupt enable Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

CC1OIE

Bit 12: Capture/compare 1 over-capture interrupt enable Note: If LPTIM does not implement at least 1 channel this bit is reserved. Refer to Section125.3..

CC2OIE

Bit 13: Capture/compare 2 over-capture interrupt enable Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3OIE

Bit 14: Capture/compare 3 over-capture interrupt enable Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4OIE

Bit 15: Capture/compare 4 over-capture interrupt enable Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

CC1DE

Bit 16: Capture/compare 1 DMA request enable Note: If LPTIM does not implement at least 1 channel this bit is reserved. Refer to Section125.3..

UEDE

Bit 23: Update event DMA request enable Note: If LPTIM does not implement at least 1 channel this bit is reserved. Refer to Section125.3..

CC2DE

Bit 25: Capture/compare 2 DMA request enable Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3DE

Bit 26: Capture/compare 3 DMA request enable Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4DE

Bit 27: Capture/compare 4 DMA request enable Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

LPTIM2_DIER_OUTPUT

LPTIM2 interrupt enable register [alternate]

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
UEDE
rw
CMP4OKIE
rw
CMP3OKIE
rw
CMP2OKIE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC4IE
rw
CC3IE
rw
CC2IE
rw
REPOKIE
rw
UEIE
rw
DOWNIE
rw
UPIE
rw
ARROKIE
rw
CMP1OKIE
rw
EXTTRIGIE
rw
ARRMIE
rw
CC1IE
rw
Toggle fields

CC1IE

Bit 0: Capture/compare 1 interrupt enable.

ARRMIE

Bit 1: Autoreload match Interrupt Enable.

EXTTRIGIE

Bit 2: External trigger valid edge Interrupt Enable.

CMP1OKIE

Bit 3: Compare register 1 update OK interrupt enable.

ARROKIE

Bit 4: Autoreload register update OK Interrupt Enable.

UPIE

Bit 5: Direction change to UP Interrupt Enable Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

DOWNIE

Bit 6: Direction change to down Interrupt Enable Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

UEIE

Bit 7: Update event interrupt enable.

REPOKIE

Bit 8: Repetition register update OK interrupt Enable.

CC2IE

Bit 9: Capture/compare 2 interrupt enable Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CC3IE

Bit 10: Capture/compare 3 interrupt enable Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CC4IE

Bit 11: Capture/compare 4 interrupt enable Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

CMP2OKIE

Bit 19: Compare register 2 update OK interrupt enable Note: If LPTIM does not implement at least 2 channels this bit is reserved. Refer to Section125.3..

CMP3OKIE

Bit 20: Compare register 3 update OK interrupt enable Note: If LPTIM does not implement at least 3 channels this bit is reserved. Refer to Section125.3..

CMP4OKIE

Bit 21: Compare register 4 update OK interrupt enable Note: If LPTIM does not implement at least 4 channels this bit is reserved. Refer to Section125.3..

UEDE

Bit 23: Update event DMA request enable Note: If LPTIM does not implement at least 1 channel this bit is reserved. Refer to Section125.3..

LPTIM2_CFGR

LPTIM configuration register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ENC
rw
COUNTMODE
rw
PRELOAD
rw
WAVE
rw
TIMOUT
rw
TRIGEN
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TRIGSEL
rw
PRESC
rw
TRGFLT
rw
CKFLT
rw
CKPOL
rw
CKSEL
rw
Toggle fields

CKSEL

Bit 0: Clock selector The CKSEL bit selects which clock source the LPTIM uses:.

CKPOL

Bits 1-2: Clock Polarity When the LPTIM is clocked by an external clock source, CKPOL bits is used to configure the active edge or edges used by the counter: If the LPTIM is configured in Encoder mode (ENC bit is set), the encoder sub-mode 1 is active. If the LPTIM is configured in Encoder mode (ENC bit is set), the encoder sub-mode 2 is active. If the LPTIM is configured in Encoder mode (ENC bit is set), the encoder sub-mode 3 is active. Refer to Section125.4.15: Encoder mode for more details about Encoder mode sub-modes..

CKFLT

Bits 3-4: Configurable digital filter for external clock The CKFLT value sets the number of consecutive equal samples that are detected when a level change occurs on an external clock signal before it is considered as a valid level transition. An internal clock source must be present to use this feature.

TRGFLT

Bits 6-7: Configurable digital filter for trigger The TRGFLT value sets the number of consecutive equal samples that are detected when a level change occurs on an internal trigger before it is considered as a valid level transition. An internal clock source must be present to use this feature.

PRESC

Bits 9-11: Clock prescaler The PRESC bits configure the prescaler division factor. It can be one among the following division factors:.

TRIGSEL

Bits 13-15: Trigger selector The TRIGSEL bits select the trigger source that serves as a trigger event for the LPTIM among the below 8 available sources: See Section125.4.3: LPTIM input and trigger mapping for details..

TRIGEN

Bits 17-18: Trigger enable and polarity The TRIGEN bits controls whether the LPTIM counter is started by an external trigger or not. If the external trigger option is selected, three configurations are possible for the trigger active edge:.

TIMOUT

Bit 19: Timeout enable The TIMOUT bit controls the Timeout feature.

WAVE

Bit 20: Waveform shape The WAVE bit controls the output shape.

PRELOAD

Bit 22: Registers update mode The PRELOAD bit controls the LPTIM2_ARR, LPTIM2_RCR and the LPTIM2_CCRx registers update modality.

COUNTMODE

Bit 23: counter mode enabled The COUNTMODE bit selects which clock source is used by the LPTIM to clock the counter:.

ENC

Bit 24: Encoder mode enable The ENC bit controls the Encoder mode Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Refer to Section125.3..

LPTIM2_CR

LPTIM control register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

0/5 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RSTARE
rw
COUNTRST
rw
CNTSTRT
rw
SNGSTRT
rw
ENABLE
rw
Toggle fields

ENABLE

Bit 0: LPTIM enable The ENABLE bit is set and cleared by software..

SNGSTRT

Bit 1: LPTIM start in Single mode This bit is set by software and cleared by hardware. In case of software start (TRIGEN[1:0] = 00), setting this bit starts the LPTIM in single pulse mode. If the software start is disabled (TRIGEN[1:0] different than 00), setting this bit starts the LPTIM in single pulse mode as soon as an external trigger is detected. If this bit is set when the LPTIM is in continuous counting mode, then the LPTIM stops at the following match between LPTIM2_ARR and LPTIM2_CNT registers. This bit can only be set when the LPTIM is enabled. It is automatically reset by hardware..

CNTSTRT

Bit 2: Timer start in Continuous mode This bit is set by software and cleared by hardware. In case of software start (TRIGEN[1:0] = 00), setting this bit starts the LPTIM in Continuous mode. If the software start is disabled (TRIGEN[1:0] different than 00), setting this bit starts the timer in Continuous mode as soon as an external trigger is detected. If this bit is set when a single pulse mode counting is ongoing, then the timer does not stop at the next match between the LPTIM2_ARR and LPTIM2_CNT registers and the LPTIM counter keeps counting in Continuous mode. This bit can be set only when the LPTIM is enabled. It is automatically reset by hardware..

COUNTRST

Bit 3: Counter reset This bit is set by software and cleared by hardware. When set to '1' this bit triggers a synchronous reset of the LPTIM2_CNT counter register. Due to the synchronous nature of this reset, it only takes place after a synchronization delay of 3 LPTimer core clock cycles (LPTimer core clock may be different from APB clock). This bit can be set only when the LPTIM is enabled. It is automatically reset by hardware. COUNTRST must never be set to '1' by software before it is already cleared to '0' by hardware. Software must consequently check that COUNTRST bit is already cleared to '0' before attempting to set it to '1'..

RSTARE

Bit 4: Reset after read enable This bit is set and cleared by software. When RSTARE is set to '1', any read access to LPTIM2_CNT register asynchronously resets LPTIM2_CNT register content. This bit can be set only when the LPTIM is enabled..

LPTIM2_CCR1

LPTIM compare register 1

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR1
rw
Toggle fields

CCR1

Bits 0-15: Capture/compare 1 value If channel CC1 is configured as output: CCR1 is the value to be loaded in the capture/compare 1 register. Depending on the PRELOAD option, the CCR1 register is immediately updated if the PRELOAD bit is reset and updated at next LPTIM update event if PREOAD bit is reset. The capture/compare register 1 contains the value to be compared to the counter LPTIM2_CNT and signaled on OC1 output. If channel CC1 is configured as input: CCR1 becomes read-only, it contains the counter value transferred by the last input capture 1 event. The LPTIM2_CCR1 register is read-only and cannot be programmed..

LPTIM2_ARR

LPTIM autoreload register

Offset: 0x18, size: 32, reset: 0x00000001, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ARR
rw
Toggle fields

ARR

Bits 0-15: Auto reload value ARR is the autoreload value for the LPTIM. This value must be strictly greater than the CCRx[15:0] value..

LPTIM2_CNT

LPTIM counter register

Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CNT
r
Toggle fields

CNT

Bits 0-15: Counter value When the LPTIM is running with an asynchronous clock, reading the LPTIM2_CNT register may return unreliable values. So in this case it is necessary to perform two consecutive read accesses and verify that the two returned values are identical..

LPTIM2_CFGR2

LPTIM configuration register 2

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

0/4 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
IC2SEL
rw
IC1SEL
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IN2SEL
rw
IN1SEL
rw
Toggle fields

IN1SEL

Bits 0-1: LPTIM input 1 selection The IN1SEL bits control the LPTIM input 1 multiplexer, which connects LPTIM input 1 to one of the available inputs. For connection details refer to Section125.4.3: LPTIM input and trigger mapping..

IN2SEL

Bits 4-5: LPTIM input 2 selection The IN2SEL bits control the LPTIM input 2 multiplexer, which connects LPTIM input 2 to one of the available inputs. For connection details refer to Section125.4.3: LPTIM input and trigger mapping..

IC1SEL

Bits 16-17: LPTIM input capture 1 selection The IC1SEL bits control the LPTIM Input capture 1 multiplexer, which connects LPTIM Input capture 1 to one of the available inputs. For connection details refer to Section125.4.3: LPTIM input and trigger mapping..

IC2SEL

Bits 20-21: LPTIM input capture 2 selection The IC2SEL bits control the LPTIM Input capture 2 multiplexer, which connects LPTIM Input capture 2 to one of the available inputs. For connection details refer to Section125.4.3: LPTIM input and trigger mapping..

LPTIM2_RCR

LPTIM repetition register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
REP
rw
Toggle fields

REP

Bits 0-7: Repetition register value REP is the repetition value for the LPTIM..

LPTIM2_CCMR1

LPTIM capture/compare mode register 1

Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified

0/10 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
IC2F
rw
IC2PSC
rw
CC2P
rw
CC2E
rw
CC2SEL
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IC1F
rw
IC1PSC
rw
CC1P
rw
CC1E
rw
CC1SEL
rw
Toggle fields

CC1SEL

Bit 0: Capture/compare 1 selection This bitfield defines the direction of the channel input (capture) or output mode..

CC1E

Bit 1: Capture/compare 1 output enable. This bit determines if a capture of the counter value can actually be done into the input capture/compare register 1 (LPTIM2_CCR1) or not..

CC1P

Bits 2-3: Capture/compare 1 output polarity. Only bit2 is used to set polarity when output mode is enabled, bit3 is don't care. This field is used to select the IC1 polarity for capture operations..

IC1PSC

Bits 8-9: Input capture 1 prescaler This bitfield defines the ratio of the prescaler acting on the CC1 input (IC1)..

IC1F

Bits 12-13: Input capture 1 filter This bitfield defines the number of consecutive equal samples that are detected when a level change occurs on an external input capture signal before it is considered as a valid level transition. An internal clock source must be present to use this feature..

CC2SEL

Bit 16: Capture/compare 2 selection This bitfield defines the direction of the channel, input (capture) or output mode..

CC2E

Bit 17: Capture/compare 2 output enable. This bit determines if a capture of the counter value can actually be done into the input capture/compare register 2 (LPTIM2_CCR2) or not..

CC2P

Bits 18-19: Capture/compare 2 output polarity. Only bit2 is used to set polarity when output mode is enabled, bit3 is don't care. This field is used to select the IC2 polarity for capture operations..

IC2PSC

Bits 24-25: Input capture 2 prescaler This bitfield defines the ratio of the prescaler acting on the CC2 input (IC2)..

IC2F

Bits 28-29: Input capture 2 filter This bitfield defines the number of consecutive equal samples that are detected when a level change occurs on an external input capture signal before it is considered as a valid level transition. An internal clock source must be present to use this feature..

LPTIM2_CCMR2

LPTIM capture/compare mode register 2

Offset: 0x30, size: 32, reset: 0x00000000, access: Unspecified

0/10 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
IC4F
rw
IC4PSC
rw
CC4P
rw
CC4E
rw
CC4SEL
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IC3F
rw
IC3PSC
rw
CC3P
rw
CC3E
rw
CC3SEL
rw
Toggle fields

CC3SEL

Bit 0: Capture/compare 3 selection This bitfield defines the direction of the channel input (capture) or output mode..

CC3E

Bit 1: Capture/compare 3 output enable. Condition: CC3 as output: Condition: CC3 as input: This bit determines if a capture of the counter value can actually be done into the input capture/compare register 3 (LPTIM2_CCR3) or not..

CC3P

Bits 2-3: Capture/compare 3 output polarity. Condition: CC3 as output: Only bit2 is used to set polarity when output mode is enabled, bit3 is don't care. Condition: CC3 as input: This field is used to select the IC3 polarity for capture operations..

IC3PSC

Bits 8-9: Input capture 3 prescaler This bitfield defines the ratio of the prescaler acting on the CC3 input (IC3)..

IC3F

Bits 12-13: Input capture 3 filter This bitfield defines the number of consecutive equal samples that should be detected when a level change occurs on an external input capture signal before it is considered as a valid level transition. An internal clock source must be present to use this feature..

CC4SEL

Bit 16: Capture/compare 4 selection This bitfield defines the direction of the channel, input (capture) or output mode..

CC4E

Bit 17: Capture/compare 4 output enable. Condition: CC4 as output: Condition: CC4 as input: This bit determines if a capture of the counter value can actually be done into the input capture/compare register 4 (LPTIM2_CCR4) or not..

CC4P

Bits 18-19: Capture/compare 4 output polarity. Condition: CC4 as output: Only bit2 is used to set polarity when output mode is enabled, bit3 is don't care. Condition: CC4 as input: This field is used to select the IC4 polarity for capture operations..

IC4PSC

Bits 24-25: Input capture 4 prescaler This bitfield defines the ratio of the prescaler acting on the CC4 input (IC4)..

IC4F

Bits 28-29: Input capture 4 filter This bitfield defines the number of consecutive equal samples that should be detected when a level change occurs on an external input capture signal before it is considered as a valid level transition. An internal clock source must be present to use this feature..

LPTIM2_CCR2

LPTIM compare register 2

Offset: 0x34, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR2
rw
Toggle fields

CCR2

Bits 0-15: Capture/compare 2 value If channel CC2 is configured as output: CCR2 is the value to be loaded in the capture/compare 2 register. Depending on the PRELOAD option, the CCR2 register is immediately updated if the PRELOAD bit is reset and updated at next LPTIM update event if PREOAD bit is reset. The capture/compare register 2 contains the value to be compared to the counter LPTIM2_CNT and signaled on OC2 output. If channel CC2 is configured as input: CCR2 becomes read-only, it contains the counter value transferred by the last input capture 2 event. The LPTIM2_CCR2 register is read-only and cannot be programmed..

LPTIM2_CCR3

LPTIM compare register 3

Offset: 0x38, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR3
rw
Toggle fields

CCR3

Bits 0-15: Capture/compare 3 value If channel CC3 is configured as output: CCR3 is the value to be loaded in the capture/compare 3 register. Depending on the PRELOAD option, the CCR3 register is immediately updated if the PRELOAD bit is reset and updated at next LPTIM update event if PREOAD bit is reset. The capture/compare register 3 contains the value to be compared to the counter LPTIM2_CNT and signaled on OC3 output. If channel CC3 is configured as input: CCR3 becomes read-only, it contains the counter value transferred by the last input capture 3 event. The LPTIM2_CCR3 register is read-only and cannot be programmed..

LPTIM2_CCR4

LPTIM compare register 4

Offset: 0x3c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR4
rw
Toggle fields

CCR4

Bits 0-15: Capture/compare 4 value If channel CC4 is configured as output: CCR4 is the value to be loaded in the capture/compare 4 register. Depending on the PRELOAD option, the CCR4 register is immediately updated if the PRELOAD bit is reset and updated at next LPTIM update event if PREOAD bit is reset. The capture/compare register 4 contains the value to be compared to the counter LPTIM2_CNT and signaled on OC4 output. If channel CC4 is configured as input: CCR4 becomes read-only, it contains the counter value transferred by the last input capture 4 event. The LPTIM2_CCR4 register is read-only and cannot be programmed..

LPUART1

0x40008000: LPUART address block description

39/121 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 LPUART_CR1
0x0 LPUART_CR1_ALTERNATE
0x4 LPUART_CR2
0x8 LPUART_CR3
0xc LPUART_BRR
0x18 LPUART_RQR
0x1c LPUART_ISR
0x1c LPUART_ISR_ALTERNATE
0x20 LPUART_ICR
0x24 LPUART_RDR
0x28 LPUART_TDR
0x2c LPUART_PRESC
Toggle registers

LPUART_CR1

LPUART control register 1

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/21 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
RXFFIE
rw
TXFEIE
rw
FIFOEN
rw
M1
rw
DEAT
rw
DEDT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CMIE
rw
MME
rw
M0
rw
WAKE
rw
PCE
rw
PS
rw
PEIE
rw
TXFNFIE
rw
TCIE
rw
RXFNEIE
rw
IDLEIE
rw
TE
rw
RE
rw
UESM
rw
UE
rw
Toggle fields

UE

Bit 0: LPUART enable When this bit is cleared, the LPUART prescalers and outputs are stopped immediately, and current operations are discarded. The configuration of the LPUART is kept, but all the status flags, in the LPUART_ISR are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be reset before and the software must wait for the TC bit in the LPUART_ISR to be set before resetting the UE bit. Note: The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit..

UESM

Bit 1: LPUART enable in low-power mode When this bit is cleared, the LPUART cannot wake up the MCU from low-power mode. When this bit is set, the LPUART can wake up the MCU from low-power mode. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode, and clear it when exiting low-power mode..

RE

Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..

TE

Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit (0 followed by 1) sends a preamble (idle line) after the current word, except in Smartcard mode. In order to generate an idle character, the TE must not be immediately written to 1. To ensure the required duration, the software can poll the TEACK bit in the LPUART_ISR register. Note: In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..

IDLEIE

Bit 4: IDLE interrupt enable This bit is set and cleared by software..

RXFNEIE

Bit 5: RXFIFO not empty interrupt enable This bit is set and cleared by software..

TCIE

Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..

TXFNFIE

Bit 7: TXFIFO not full interrupt enable This bit is set and cleared by software..

PEIE

Bit 8: PE interrupt enable This bit is set and cleared by software..

PS

Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the LPUART is disabled (UE=0)..

PCE

Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the LPUART is disabled (UE=0)..

WAKE

Bit 11: Receiver wake-up method This bit determines the LPUART wake-up method from Mute mode. It is set or cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..

M0

Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1) description). This bit can only be written when the LPUART is disabled (UE=0)..

MME

Bit 13: Mute mode enable This bit activates the Mute mode function of the LPUART. When set, the LPUART can switch between the active and Mute modes, as defined by the WAKE bit. It is set and cleared by software..

CMIE

Bit 14: Character match interrupt enable This bit is set and cleared by software..

DEDT

Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal.It is expressed in lpuart_ker_ck clock cycles. For more details, refer Section132.4.14: RS232 Hardware flow control and RS485 Driver Enable. If the LPUART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the LPUART is disabled (UE=0)..

DEAT

Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in lpuart_ker_ck clock cycles. For more details, refer Section131.5.21: RS232 Hardware flow control and RS485 Driver Enable. This bitfield can only be written when the LPUART is disabled (UE=0)..

M1

Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = 00: 1 Start bit, 8 Data bits, n Stop bit M[1:0] = 01: 1 Start bit, 9 Data bits, n Stop bit M[1:0] = 10: 1 Start bit, 7 Data bits, n Stop bit This bit can only be written when the LPUART is disabled (UE=0). Note: In 7-bit data length mode, the Smartcard mode, LIN master mode and auto baud rate (0x7F and 0x55 frames detection) are not supported..

FIFOEN

Bit 29: FIFO mode enable This bit is set and cleared by software..

TXFEIE

Bit 30: TXFIFO empty interrupt enable This bit is set and cleared by software..

RXFFIE

Bit 31: RXFIFO Full interrupt enable This bit is set and cleared by software..

LPUART_CR1_ALTERNATE

LPUART control register 1

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/19 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
FIFOEN
rw
M1
rw
DEAT
rw
DEDT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CMIE
rw
MME
rw
M0
rw
WAKE
rw
PCE
rw
PS
rw
PEIE
rw
TXEIE
rw
TCIE
rw
RXNEIE
rw
IDLEIE
rw
TE
rw
RE
rw
UESM
rw
UE
rw
Toggle fields

UE

Bit 0: LPUART enable When this bit is cleared, the LPUART prescalers and outputs are stopped immediately, and current operations are discarded. The configuration of the LPUART is kept, but all the status flags, in the LPUART_ISR are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be reset before and the software must wait for the TC bit in the LPUART_ISR to be set before resetting the UE bit. Note: The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit..

UESM

Bit 1: LPUART enable in low-power mode When this bit is cleared, the LPUART cannot wake up the MCU from low-power mode. When this bit is set, the LPUART can wake up the MCU from low-power mode. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode, and clear it when exiting low-power mode..

RE

Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..

TE

Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit (0 followed by 1) sends a preamble (idle line) after the current word, except in Smartcard mode. In order to generate an idle character, the TE must not be immediately written to 1. To ensure the required duration, the software can poll the TEACK bit in the LPUART_ISR register. Note: In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..

IDLEIE

Bit 4: IDLE interrupt enable This bit is set and cleared by software..

RXNEIE

Bit 5: Receive data register not empty This bit is set and cleared by software..

TCIE

Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..

TXEIE

Bit 7: Transmit data register empty This bit is set and cleared by software..

PEIE

Bit 8: PE interrupt enable This bit is set and cleared by software..

PS

Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the LPUART is disabled (UE=0)..

PCE

Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the LPUART is disabled (UE=0)..

WAKE

Bit 11: Receiver wake-up method This bit determines the LPUART wake-up method from Mute mode. It is set or cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..

M0

Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1) description). This bit can only be written when the LPUART is disabled (UE=0)..

MME

Bit 13: Mute mode enable This bit activates the Mute mode function of the LPUART. When set, the LPUART can switch between the active and Mute modes, as defined by the WAKE bit. It is set and cleared by software..

CMIE

Bit 14: Character match interrupt enable This bit is set and cleared by software..

DEDT

Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal.It is expressed in lpuart_ker_ck clock cycles. For more details, refer Section132.4.14: RS232 Hardware flow control and RS485 Driver Enable. If the LPUART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the LPUART is disabled (UE=0)..

DEAT

Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in lpuart_ker_ck clock cycles. For more details, refer Section131.5.21: RS232 Hardware flow control and RS485 Driver Enable. This bitfield can only be written when the LPUART is disabled (UE=0)..

M1

Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = 00: 1 Start bit, 8 Data bits, n Stop bit M[1:0] = 01: 1 Start bit, 9 Data bits, n Stop bit M[1:0] = 10: 1 Start bit, 7 Data bits, n Stop bit This bit can only be written when the LPUART is disabled (UE=0). Note: In 7-bit data length mode, the Smartcard mode, LIN master mode and auto baud rate (0x7F and 0x55 frames detection) are not supported..

FIFOEN

Bit 29: FIFO mode enable This bit is set and cleared by software..

LPUART_CR2

LPUART control register 2

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ADD
rw
MSBFIRST
rw
DATAINV
rw
TXINV
rw
RXINV
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SWAP
rw
STOP
rw
ADDM7
rw
Toggle fields

ADDM7

Bit 4: 7-bit Address Detection/4-bit Address Detection This bit is for selection between 4-bit address detection or 7-bit address detection. This bit can only be written when the LPUART is disabled (UE=0) Note: In 7-bit and 9-bit data modes, the address detection is done on 6-bit and 8-bit address (ADD[5:0] and ADD[7:0]) respectively..

STOP

Bits 12-13: STOP bits These bits are used for programming the stop bits. This bitfield can only be written when the LPUART is disabled (UE=0)..

SWAP

Bit 15: Swap TX/RX pins This bit is set and cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..

RXINV

Bit 16: RX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the RX line. This bitfield can only be written when the LPUART is disabled (UE=0)..

TXINV

Bit 17: TX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the TX line. This bitfield can only be written when the LPUART is disabled (UE=0)..

DATAINV

Bit 18: Binary data inversion This bit is set and cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..

MSBFIRST

Bit 19: Most significant bit first This bit is set and cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..

ADD

Bits 24-31: Address of the LPUART node These bits give the address of the LPUART node in Mute mode or a character code to be recognized in low-power or Run mode: In Mute mode: they are used in multiprocessor communication to wake up from Mute mode with 4-bit/7-bit address mark detection. The MSB of the character sent by the transmitter should be equal to 1. In 4-bit address mark detection, only ADD[3:0] bits are used. In low-power mode: they are used for wake up from low-power mode on character match. When WUS[1:0] is programmed to 0b00 (WUF active on address match), the wake-up from low-power mode is performed when the received character corresponds to the character programmed through ADD[6:0] or ADD[3:0] bitfield (depending on ADDM7 bit), and WUF interrupt is enabled by setting WUFIE bit. The MSB of the character sent by transmitter should be equal to 1. In Run mode with Mute mode inactive (for example, end-of-block detection in ModBus protocol): the whole received character (8 bits) is compared to ADD[7:0] value and CMF flag is set on match. An interrupt is generated if the CMIE bit is set. These bits can only be written when the reception is disabled (RE1=10) or when the USART is disabled (UE1=10)..

LPUART_CR3

LPUART control register 3

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/18 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TXFTCFG
rw
RXFTIE
rw
RXFTCFG
rw
TXFTIE
rw
WUFIE
rw
WUS1
rw
WUS0
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DEP
rw
DEM
rw
DDRE
rw
OVRDIS
rw
CTSIE
rw
CTSE
rw
RTSE
rw
DMAT
rw
DMAR
rw
HDSEL
rw
EIE
rw
Toggle fields

EIE

Bit 0: Error interrupt enable Error Interrupt Enable Bit is required to enable interrupt generation in case of a framing error, overrun error or noise flag (FE=1 or ORE=1 or NE=1 in the LPUART_ISR register)..

HDSEL

Bit 3: Half-duplex selection Selection of Single-wire Half-duplex mode This bit can only be written when the LPUART is disabled (UE=0)..

DMAR

Bit 6: DMA enable receiver This bit is set/reset by software.

DMAT

Bit 7: DMA enable transmitter This bit is set/reset by software.

RTSE

Bit 8: RTS enable This bit can only be written when the LPUART is disabled (UE=0)..

CTSE

Bit 9: CTS enable This bit can only be written when the LPUART is disabled (UE=0).

CTSIE

Bit 10: CTS interrupt enable.

OVRDIS

Bit 12: Overrun Disable This bit is used to disable the receive overrun detection. the ORE flag is not set and the new received data overwrites the previous content of the LPUART_RDR register. This bit can only be written when the LPUART is disabled (UE=0). Note: This control bit enables checking the communication flow w/o reading the data..

DDRE

Bit 13: DMA Disable on Reception Error This bit can only be written when the LPUART is disabled (UE=0). Note: The reception errors are: parity error, framing error or noise error..

DEM

Bit 14: Driver enable mode This bit enables the user to activate the external transceiver control, through the DE signal. This bit can only be written when the LPUART is disabled (UE=0)..

DEP

Bit 15: Driver enable polarity selection This bit can only be written when the LPUART is disabled (UE=0)..

WUS0

Bit 20: Wake-up from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (Wake-up from low-power mode flag). This bitfield can only be written when the LPUART is disabled (UE=0). Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section132.3: LPUART implementation on page1914..

WUS1

Bit 21: Wake-up from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (Wake-up from low-power mode flag). This bitfield can only be written when the LPUART is disabled (UE=0). Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section132.3: LPUART implementation on page1914..

WUFIE

Bit 22: Wake-up from low-power mode interrupt enable This bit is set and cleared by software. Note: WUFIE must be set before entering in low-power mode. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section132.3: LPUART implementation on page1914..

TXFTIE

Bit 23: TXFIFO threshold interrupt enable This bit is set and cleared by software..

RXFTCFG

Bits 25-27: Receive FIFO threshold configuration Remaining combinations: Reserved..

RXFTIE

Bit 28: RXFIFO threshold interrupt enable This bit is set and cleared by software..

TXFTCFG

Bits 29-31: TXFIFO threshold configuration Remaining combinations: Reserved..

LPUART_BRR

LPUART baud rate register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BRR
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BRR
rw
Toggle fields

BRR

Bits 0-19: LPUART baud rate division (LPUARTDIV).

LPUART_RQR

LPUART request register

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TXFRQ
w
RXFRQ
w
MMRQ
w
SBKRQ
w
Toggle fields

SBKRQ

Bit 1: Send break request Writing 1 to this bit sets the SBKF flag and request to send a BREAK on the line, as soon as the transmit machine is available. Note: If the application needs to send the break character following all previously inserted data, including the ones not yet transmitted, the software must wait for the TXE flag assertion before setting the SBKRQ bit..

MMRQ

Bit 2: Mute mode request Writing 1 to this bit puts the LPUART in Mute mode and resets the RWU flag..

RXFRQ

Bit 3: Receive data flush request Writing 1 to this bit clears the RXNE flag. This enables discarding the received data without reading it, and avoid an overrun condition..

TXFRQ

Bit 4: Transmit data flush request This bit is used when FIFO mode is enabled. TXFRQ bit is set to flush the whole FIFO. This sets the flag TXFE (TXFIFO empty, bit 23 in the LPUART_ISR register). Note: In FIFO mode, the TXFNF flag is reset during the flush request until TxFIFO is empty in order to ensure that no data are written in the data register..

LPUART_ISR

LPUART interrupt and status register

Offset: 0x1c, size: 32, reset: 0x008000C0, access: Unspecified

21/21 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TXFT
r
RXFT
r
RXFF
r
TXFE
r
REACK
r
TEACK
r
WUF
r
RWU
r
SBKF
r
CMF
r
BUSY
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CTS
r
CTSIF
r
TXFNF
r
TC
r
RXFNE
r
IDLE
r
ORE
r
NE
r
FE
r
PE
r
Toggle fields

PE

Bit 0: Parity error This bit is set by hardware when a parity error occurs in Reception mode. It is cleared by software, writing 1 to the PECF in the LPUART_ICR register. An interrupt is generated if PEIE = 1 in the LPUART_CR1 register. Note: This error is associated with the character in the LPUART_RDR..

FE

Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the LPUART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE1=11 in the LPUART_CR3 register. Note: This error is associated with the character in the LPUART_RDR..

NE

Bit 2: Start bit noise detection flag This bit is set by hardware when noise is detected on the start bit of a received frame. It is cleared by software, writing 1 to the NFCF bit in the LPUART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXFNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. Note: This error is associated with the character in the LPUART_RDR..

ORE

Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the LPUART_RDR register while RXFF = 1. It is cleared by a software, writing 1 to the ORECF, in the LPUART_ICR register. An interrupt is generated if RXFNEIE=1 in the LPUART_CR1 register, or EIE = 1 in the LPUART_CR3 register. Note: When this bit is set, the LPUART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. Note: This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the LPUART_CR3 register..

IDLE

Bit 4: Idle line detected This bit is set by hardware when an Idle line is detected. An interrupt is generated if IDLEIE=1 in the LPUART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the LPUART_ICR register. Note: The IDLE bit is not set again until the RXFNE bit has been set (i.e. a new idle line occurs). Note: If Mute mode is enabled (MME=1), IDLE is set if the LPUART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..

RXFNE

Bit 5: RXFIFO not empty RXFNE bit is set by hardware when the RXFIFO is not empty, and so data can be read from the LPUART_RDR register. Every read of the LPUART_RDR frees a location in the RXFIFO. It is cleared when the RXFIFO is empty. The RXFNE flag can also be cleared by writing 1 to the RXFRQ in the LPUART_RQR register. An interrupt is generated if RXFNEIE=1 in the LPUART_CR1 register..

TC

Bit 6: Transmission complete This bit indicates that the last data written in the LPUART_TDR has been transmitted out of the shift register. The TC flag behaves as follows: When TDN = 0, the TC flag is set when the transmission of a frame containing data is complete and when TXFE is set. When TDN is equal to the number of data in the TXFIFO, the TC flag is set when TXFIFO is empty and TDN is reached. When TDN is greater than the number of data in the TXFIFO, TC remains cleared until the TXFIFO is filled again to reach the programmed number of data to be transferred. When TDN is less than the number of data in the TXFIFO, TC is set when TDN is reached even if the TXFIFO is not empty. An interrupt is generated if TCIE=1 in the LPUART_CR1 register. TC bit is cleared by software by writing 1 to the TCCF in the LPUART_ICR register or by writing to the LPUART_TDR register..

TXFNF

Bit 7: TXFIFO not full TXFNF is set by hardware when TXFIFO is not full, and so data can be written in the LPUART_TDR. Every write in the LPUART_TDR places the data in the TXFIFO. This flag remains set until the TXFIFO is full. When the TXFIFO is full, this flag is cleared indicating that data can not be written into the LPUART_TDR. The TXFNF is kept reset during the flush request until TXFIFO is empty. After sending the flush request (by setting TXFRQ bit), the flag TXFNF must be checked prior to writing in TXFIFO (TXFNF and TXFE are set at the same time). An interrupt is generated if the TXFNFIE bit =1 in the LPUART_CR1 register. Note: This bit is used during single buffer transmission..

CTSIF

Bit 9: CTS interrupt flag This bit is set by hardware when the CTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the LPUART_ICR register. An interrupt is generated if CTSIE=1 in the LPUART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

CTS

Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the CTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

BUSY

Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..

CMF

Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the LPUART_ICR register. An interrupt is generated if CMIE=1in the LPUART_CR1 register..

SBKF

Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the LPUART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..

RWU

Bit 19: Receiver wake-up from Mute mode This bit indicates if the LPUART is in Mute mode. It is cleared/set by hardware when a wake-up/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the LPUART_CR1 register. When wake-up on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the LPUART_RQR register. Note: If the LPUART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value..

WUF

Bit 20: Wake-up from low-power mode flag This bit is set by hardware, when a wake-up event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the LPUART_ICR register. An interrupt is generated if WUFIE=1 in the LPUART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section132.3: LPUART implementation on page1914..

TEACK

Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the LPUART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the LPUART_CR1 register, in order to respect the TE=0 minimum period..

REACK

Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the LPUART. It can be used to verify that the LPUART is ready for reception before entering low-power mode. Note: If the LPUART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value..

TXFE

Bit 23: TXFIFO Empty This bit is set by hardware when TXFIFO is Empty. When the TXFIFO contains at least one data, this flag is cleared. The TXFE flag can also be set by writing 1 to the bit TXFRQ (bit 4) in the LPUART_RQR register. An interrupt is generated if the TXFEIE bit =1 (bit 30) in the LPUART_CR1 register..

RXFF

Bit 24: RXFIFO Full This bit is set by hardware when the number of received data corresponds to RXFIFO1size1+11 (RXFIFO full + 1 data in the LPUART_RDR register. An interrupt is generated if the RXFFIE bit =1 in the LPUART_CR1 register..

RXFT

Bit 26: RXFIFO threshold flag This bit is set by hardware when the RXFIFO reaches the threshold programmed in RXFTCFG in LPUART_CR3 register i.e. the Receive FIFO contains RXFTCFG data. An interrupt is generated if the RXFTIE bit =1 (bit 27) in the LPUART_CR3 register..

TXFT

Bit 27: TXFIFO threshold flag This bit is set by hardware when the TXFIFO reaches the threshold programmed in TXFTCFG in LPUART_CR3 register i.e. the TXFIFO contains TXFTCFG empty locations. An interrupt is generated if the TXFTIE bit =1 (bit 31) in the LPUART_CR3 register..

LPUART_ISR_ALTERNATE

LPUART interrupt and status register

Offset: 0x1c, size: 32, reset: 0x008000C0, access: Unspecified

17/17 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
REACK
r
TEACK
r
WUF
r
RWU
r
SBKF
r
CMF
r
BUSY
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CTS
r
CTSIF
r
TXE
r
TC
r
RXNE
r
IDLE
r
ORE
r
NE
r
FE
r
PE
r
Toggle fields

PE

Bit 0: Parity error This bit is set by hardware when a parity error occurs in Reception mode. It is cleared by software, writing 1 to the PECF in the LPUART_ICR register. An interrupt is generated if PEIE = 1 in the LPUART_CR1 register. Note: In FIFO mode, this error is associated with the character in the LPUART_RDR..

FE

Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the LPUART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE1=11 in the LPUART_CR3 register. Note: In FIFO mode, this error is associated with the character in the LPUART_RDR..

NE

Bit 2: Start bit noise detection flag This bit is set by hardware when noise is detected on the start bit of a received frame. It is cleared by software, writing 1 to the NFCF bit in the LPUART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXNE/RXFNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. Note: In FIFO mode, this error is associated with the character in the LPUART_RDR..

ORE

Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the LPUART_RDR register while RXNE=1 (RXFF = 1 in case FIFO mode is enabled). It is cleared by a software, writing 1 to the ORECF, in the LPUART_ICR register. An interrupt is generated if RXNEIE=1 in the LPUART_CR1 register, or EIE = 1 in the LPUART_CR3 register. Note: When this bit is set, the LPUART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. Note: This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the LPUART_CR3 register..

IDLE

Bit 4: Idle line detected This bit is set by hardware when an Idle Line is detected. An interrupt is generated if IDLEIE=1 in the LPUART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the LPUART_ICR register. Note: The IDLE bit is not set again until the RXNE bit has been set (i.e. a new idle line occurs). Note: If Mute mode is enabled (MME=1), IDLE is set if the LPUART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..

RXNE

Bit 5: Read data register not empty RXNE bit is set by hardware when the content of the LPUART_RDR shift register has been transferred to the LPUART_RDR register. It is cleared by a read to the LPUART_RDR register. The RXNE flag can also be cleared by writing 1 to the RXFRQ in the LPUART_RQR register. The RXFNE flag can also be cleared by writing 1 to the RXFRQ in the LPUART_RQR register. An interrupt is generated if RXNEIE=1 in the LPUART_CR1 register..

TC

Bit 6: Transmission complete This bit indicates that the last data written in the USART_TDR has been transmitted out of the shift register. The TC flag is set when the transmission of a frame containing data is complete and when TXE is set. An interrupt is generated if TCIE=1 in the LPUART_CR1 register. TC bit is cleared by software by writing 1 to the TCCF in the USART_ICR register or by writing to the USART_TDR register..

TXE

Bit 7: Transmit data register empty TXE is set by hardware when the content of the LPUART_TDR register has been transferred into the shift register. It is cleared by a write to the LPUART_TDR register. An interrupt is generated if the TXEIE bit =1 in the LPUART_CR1 register. Note: This bit is used during single buffer transmission..

CTSIF

Bit 9: CTS interrupt flag This bit is set by hardware when the CTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the LPUART_ICR register. An interrupt is generated if CTSIE=1 in the LPUART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

CTS

Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the CTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

BUSY

Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..

CMF

Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the LPUART_ICR register. An interrupt is generated if CMIE=1in the LPUART_CR1 register..

SBKF

Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the LPUART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..

RWU

Bit 19: Receiver wake-up from Mute mode This bit indicates if the LPUART is in Mute mode. It is cleared/set by hardware when a wake-up/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the LPUART_CR1 register. When wake-up on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the LPUART_RQR register. Note: If the LPUART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value..

WUF

Bit 20: Wake-up from low-power mode flag This bit is set by hardware, when a wake-up event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the LPUART_ICR register. An interrupt is generated if WUFIE=1 in the LPUART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section132.3: LPUART implementation on page1914..

TEACK

Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the LPUART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the LPUART_CR1 register, in order to respect the TE=0 minimum period..

REACK

Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the LPUART. It can be used to verify that the LPUART is ready for reception before entering low-power mode. Note: If the LPUART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value..

LPUART_ICR

LPUART interrupt flag clear register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/9 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
WUCF
w
CMCF
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CTSCF
w
TCCF
w
IDLECF
w
ORECF
w
NECF
w
FECF
w
PECF
w
Toggle fields

PECF

Bit 0: Parity error clear flag Writing 1 to this bit clears the PE flag in the LPUART_ISR register..

FECF

Bit 1: Framing error clear flag Writing 1 to this bit clears the FE flag in the LPUART_ISR register..

NECF

Bit 2: Noise detected clear flag Writing 1 to this bit clears the NE flag in the LPUART_ISR register..

ORECF

Bit 3: Overrun error clear flag Writing 1 to this bit clears the ORE flag in the LPUART_ISR register..

IDLECF

Bit 4: Idle line detected clear flag Writing 1 to this bit clears the IDLE flag in the LPUART_ISR register..

TCCF

Bit 6: Transmission complete clear flag Writing 1 to this bit clears the TC flag in the LPUART_ISR register..

CTSCF

Bit 9: CTS clear flag Writing 1 to this bit clears the CTSIF flag in the LPUART_ISR register..

CMCF

Bit 17: Character match clear flag Writing 1 to this bit clears the CMF flag in the LPUART_ISR register..

WUCF

Bit 20: Wake-up from low-power mode clear flag Writing 1 to this bit clears the WUF flag in the USART_ISR register. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section132.3: LPUART implementation on page1914..

LPUART_RDR

LPUART receive data register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RDR
r
Toggle fields

RDR

Bits 0-8: Receive data value Contains the received data character. The RDR register provides the parallel interface between the input shift register and the internal bus (see Figure1254). When receiving with the parity enabled, the value read in the MSB bit is the received parity bit..

LPUART_TDR

LPUART transmit data register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TDR
rw
Toggle fields

TDR

Bits 0-8: Transmit data value Contains the data character to be transmitted. The TDR register provides the parallel interface between the internal bus and the output shift register (see Figure1254). When transmitting with the parity enabled (PCE bit set to 1 in the LPUART_CR1 register), the value written in the MSB (bit 7 or bit 8 depending on the data length) has no effect because it is replaced by the parity. Note: This register must be written only when TXE/TXFNF=1..

LPUART_PRESC

LPUART prescaler register

Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PRESCALER
rw
Toggle fields

PRESCALER

Bits 0-3: Clock prescaler The LPUART input clock can be divided by a prescaler: Remaining combinations: Reserved. Note: When PRESCALER is programmed with a value different of the allowed ones, programmed prescaler value is equal to 1011 i.e. input clock divided by 256..

LPUART2

0x40008400: LPUART address block description

39/121 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 LPUART_CR1
0x0 LPUART_CR1_ALTERNATE
0x4 LPUART_CR2
0x8 LPUART_CR3
0xc LPUART_BRR
0x18 LPUART_RQR
0x1c LPUART_ISR
0x1c LPUART_ISR_ALTERNATE
0x20 LPUART_ICR
0x24 LPUART_RDR
0x28 LPUART_TDR
0x2c LPUART_PRESC
Toggle registers

LPUART_CR1

LPUART control register 1

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/21 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
RXFFIE
rw
TXFEIE
rw
FIFOEN
rw
M1
rw
DEAT
rw
DEDT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CMIE
rw
MME
rw
M0
rw
WAKE
rw
PCE
rw
PS
rw
PEIE
rw
TXFNFIE
rw
TCIE
rw
RXFNEIE
rw
IDLEIE
rw
TE
rw
RE
rw
UESM
rw
UE
rw
Toggle fields

UE

Bit 0: LPUART enable When this bit is cleared, the LPUART prescalers and outputs are stopped immediately, and current operations are discarded. The configuration of the LPUART is kept, but all the status flags, in the LPUART_ISR are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be reset before and the software must wait for the TC bit in the LPUART_ISR to be set before resetting the UE bit. Note: The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit..

UESM

Bit 1: LPUART enable in low-power mode When this bit is cleared, the LPUART cannot wake up the MCU from low-power mode. When this bit is set, the LPUART can wake up the MCU from low-power mode. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode, and clear it when exiting low-power mode..

RE

Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..

TE

Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit (0 followed by 1) sends a preamble (idle line) after the current word, except in Smartcard mode. In order to generate an idle character, the TE must not be immediately written to 1. To ensure the required duration, the software can poll the TEACK bit in the LPUART_ISR register. Note: In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..

IDLEIE

Bit 4: IDLE interrupt enable This bit is set and cleared by software..

RXFNEIE

Bit 5: RXFIFO not empty interrupt enable This bit is set and cleared by software..

TCIE

Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..

TXFNFIE

Bit 7: TXFIFO not full interrupt enable This bit is set and cleared by software..

PEIE

Bit 8: PE interrupt enable This bit is set and cleared by software..

PS

Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the LPUART is disabled (UE=0)..

PCE

Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the LPUART is disabled (UE=0)..

WAKE

Bit 11: Receiver wake-up method This bit determines the LPUART wake-up method from Mute mode. It is set or cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..

M0

Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1) description). This bit can only be written when the LPUART is disabled (UE=0)..

MME

Bit 13: Mute mode enable This bit activates the Mute mode function of the LPUART. When set, the LPUART can switch between the active and Mute modes, as defined by the WAKE bit. It is set and cleared by software..

CMIE

Bit 14: Character match interrupt enable This bit is set and cleared by software..

DEDT

Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal.It is expressed in lpuart_ker_ck clock cycles. For more details, refer Section132.4.14: RS232 Hardware flow control and RS485 Driver Enable. If the LPUART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the LPUART is disabled (UE=0)..

DEAT

Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in lpuart_ker_ck clock cycles. For more details, refer Section131.5.21: RS232 Hardware flow control and RS485 Driver Enable. This bitfield can only be written when the LPUART is disabled (UE=0)..

M1

Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = 00: 1 Start bit, 8 Data bits, n Stop bit M[1:0] = 01: 1 Start bit, 9 Data bits, n Stop bit M[1:0] = 10: 1 Start bit, 7 Data bits, n Stop bit This bit can only be written when the LPUART is disabled (UE=0). Note: In 7-bit data length mode, the Smartcard mode, LIN master mode and auto baud rate (0x7F and 0x55 frames detection) are not supported..

FIFOEN

Bit 29: FIFO mode enable This bit is set and cleared by software..

TXFEIE

Bit 30: TXFIFO empty interrupt enable This bit is set and cleared by software..

RXFFIE

Bit 31: RXFIFO Full interrupt enable This bit is set and cleared by software..

LPUART_CR1_ALTERNATE

LPUART control register 1

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/19 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
FIFOEN
rw
M1
rw
DEAT
rw
DEDT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CMIE
rw
MME
rw
M0
rw
WAKE
rw
PCE
rw
PS
rw
PEIE
rw
TXEIE
rw
TCIE
rw
RXNEIE
rw
IDLEIE
rw
TE
rw
RE
rw
UESM
rw
UE
rw
Toggle fields

UE

Bit 0: LPUART enable When this bit is cleared, the LPUART prescalers and outputs are stopped immediately, and current operations are discarded. The configuration of the LPUART is kept, but all the status flags, in the LPUART_ISR are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be reset before and the software must wait for the TC bit in the LPUART_ISR to be set before resetting the UE bit. Note: The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit..

UESM

Bit 1: LPUART enable in low-power mode When this bit is cleared, the LPUART cannot wake up the MCU from low-power mode. When this bit is set, the LPUART can wake up the MCU from low-power mode. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode, and clear it when exiting low-power mode..

RE

Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..

TE

Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit (0 followed by 1) sends a preamble (idle line) after the current word, except in Smartcard mode. In order to generate an idle character, the TE must not be immediately written to 1. To ensure the required duration, the software can poll the TEACK bit in the LPUART_ISR register. Note: In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..

IDLEIE

Bit 4: IDLE interrupt enable This bit is set and cleared by software..

RXNEIE

Bit 5: Receive data register not empty This bit is set and cleared by software..

TCIE

Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..

TXEIE

Bit 7: Transmit data register empty This bit is set and cleared by software..

PEIE

Bit 8: PE interrupt enable This bit is set and cleared by software..

PS

Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the LPUART is disabled (UE=0)..

PCE

Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the LPUART is disabled (UE=0)..

WAKE

Bit 11: Receiver wake-up method This bit determines the LPUART wake-up method from Mute mode. It is set or cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..

M0

Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1) description). This bit can only be written when the LPUART is disabled (UE=0)..

MME

Bit 13: Mute mode enable This bit activates the Mute mode function of the LPUART. When set, the LPUART can switch between the active and Mute modes, as defined by the WAKE bit. It is set and cleared by software..

CMIE

Bit 14: Character match interrupt enable This bit is set and cleared by software..

DEDT

Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal.It is expressed in lpuart_ker_ck clock cycles. For more details, refer Section132.4.14: RS232 Hardware flow control and RS485 Driver Enable. If the LPUART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the LPUART is disabled (UE=0)..

DEAT

Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in lpuart_ker_ck clock cycles. For more details, refer Section131.5.21: RS232 Hardware flow control and RS485 Driver Enable. This bitfield can only be written when the LPUART is disabled (UE=0)..

M1

Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = 00: 1 Start bit, 8 Data bits, n Stop bit M[1:0] = 01: 1 Start bit, 9 Data bits, n Stop bit M[1:0] = 10: 1 Start bit, 7 Data bits, n Stop bit This bit can only be written when the LPUART is disabled (UE=0). Note: In 7-bit data length mode, the Smartcard mode, LIN master mode and auto baud rate (0x7F and 0x55 frames detection) are not supported..

FIFOEN

Bit 29: FIFO mode enable This bit is set and cleared by software..

LPUART_CR2

LPUART control register 2

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ADD
rw
MSBFIRST
rw
DATAINV
rw
TXINV
rw
RXINV
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SWAP
rw
STOP
rw
ADDM7
rw
Toggle fields

ADDM7

Bit 4: 7-bit Address Detection/4-bit Address Detection This bit is for selection between 4-bit address detection or 7-bit address detection. This bit can only be written when the LPUART is disabled (UE=0) Note: In 7-bit and 9-bit data modes, the address detection is done on 6-bit and 8-bit address (ADD[5:0] and ADD[7:0]) respectively..

STOP

Bits 12-13: STOP bits These bits are used for programming the stop bits. This bitfield can only be written when the LPUART is disabled (UE=0)..

SWAP

Bit 15: Swap TX/RX pins This bit is set and cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..

RXINV

Bit 16: RX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the RX line. This bitfield can only be written when the LPUART is disabled (UE=0)..

TXINV

Bit 17: TX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the TX line. This bitfield can only be written when the LPUART is disabled (UE=0)..

DATAINV

Bit 18: Binary data inversion This bit is set and cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..

MSBFIRST

Bit 19: Most significant bit first This bit is set and cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..

ADD

Bits 24-31: Address of the LPUART node These bits give the address of the LPUART node in Mute mode or a character code to be recognized in low-power or Run mode: In Mute mode: they are used in multiprocessor communication to wake up from Mute mode with 4-bit/7-bit address mark detection. The MSB of the character sent by the transmitter should be equal to 1. In 4-bit address mark detection, only ADD[3:0] bits are used. In low-power mode: they are used for wake up from low-power mode on character match. When WUS[1:0] is programmed to 0b00 (WUF active on address match), the wake-up from low-power mode is performed when the received character corresponds to the character programmed through ADD[6:0] or ADD[3:0] bitfield (depending on ADDM7 bit), and WUF interrupt is enabled by setting WUFIE bit. The MSB of the character sent by transmitter should be equal to 1. In Run mode with Mute mode inactive (for example, end-of-block detection in ModBus protocol): the whole received character (8 bits) is compared to ADD[7:0] value and CMF flag is set on match. An interrupt is generated if the CMIE bit is set. These bits can only be written when the reception is disabled (RE1=10) or when the USART is disabled (UE1=10)..

LPUART_CR3

LPUART control register 3

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/18 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TXFTCFG
rw
RXFTIE
rw
RXFTCFG
rw
TXFTIE
rw
WUFIE
rw
WUS1
rw
WUS0
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DEP
rw
DEM
rw
DDRE
rw
OVRDIS
rw
CTSIE
rw
CTSE
rw
RTSE
rw
DMAT
rw
DMAR
rw
HDSEL
rw
EIE
rw
Toggle fields

EIE

Bit 0: Error interrupt enable Error Interrupt Enable Bit is required to enable interrupt generation in case of a framing error, overrun error or noise flag (FE=1 or ORE=1 or NE=1 in the LPUART_ISR register)..

HDSEL

Bit 3: Half-duplex selection Selection of Single-wire Half-duplex mode This bit can only be written when the LPUART is disabled (UE=0)..

DMAR

Bit 6: DMA enable receiver This bit is set/reset by software.

DMAT

Bit 7: DMA enable transmitter This bit is set/reset by software.

RTSE

Bit 8: RTS enable This bit can only be written when the LPUART is disabled (UE=0)..

CTSE

Bit 9: CTS enable This bit can only be written when the LPUART is disabled (UE=0).

CTSIE

Bit 10: CTS interrupt enable.

OVRDIS

Bit 12: Overrun Disable This bit is used to disable the receive overrun detection. the ORE flag is not set and the new received data overwrites the previous content of the LPUART_RDR register. This bit can only be written when the LPUART is disabled (UE=0). Note: This control bit enables checking the communication flow w/o reading the data..

DDRE

Bit 13: DMA Disable on Reception Error This bit can only be written when the LPUART is disabled (UE=0). Note: The reception errors are: parity error, framing error or noise error..

DEM

Bit 14: Driver enable mode This bit enables the user to activate the external transceiver control, through the DE signal. This bit can only be written when the LPUART is disabled (UE=0)..

DEP

Bit 15: Driver enable polarity selection This bit can only be written when the LPUART is disabled (UE=0)..

WUS0

Bit 20: Wake-up from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (Wake-up from low-power mode flag). This bitfield can only be written when the LPUART is disabled (UE=0). Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section132.3: LPUART implementation on page1914..

WUS1

Bit 21: Wake-up from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (Wake-up from low-power mode flag). This bitfield can only be written when the LPUART is disabled (UE=0). Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section132.3: LPUART implementation on page1914..

WUFIE

Bit 22: Wake-up from low-power mode interrupt enable This bit is set and cleared by software. Note: WUFIE must be set before entering in low-power mode. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section132.3: LPUART implementation on page1914..

TXFTIE

Bit 23: TXFIFO threshold interrupt enable This bit is set and cleared by software..

RXFTCFG

Bits 25-27: Receive FIFO threshold configuration Remaining combinations: Reserved..

RXFTIE

Bit 28: RXFIFO threshold interrupt enable This bit is set and cleared by software..

TXFTCFG

Bits 29-31: TXFIFO threshold configuration Remaining combinations: Reserved..

LPUART_BRR

LPUART baud rate register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BRR
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BRR
rw
Toggle fields

BRR

Bits 0-19: LPUART baud rate division (LPUARTDIV).

LPUART_RQR

LPUART request register

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TXFRQ
w
RXFRQ
w
MMRQ
w
SBKRQ
w
Toggle fields

SBKRQ

Bit 1: Send break request Writing 1 to this bit sets the SBKF flag and request to send a BREAK on the line, as soon as the transmit machine is available. Note: If the application needs to send the break character following all previously inserted data, including the ones not yet transmitted, the software must wait for the TXE flag assertion before setting the SBKRQ bit..

MMRQ

Bit 2: Mute mode request Writing 1 to this bit puts the LPUART in Mute mode and resets the RWU flag..

RXFRQ

Bit 3: Receive data flush request Writing 1 to this bit clears the RXNE flag. This enables discarding the received data without reading it, and avoid an overrun condition..

TXFRQ

Bit 4: Transmit data flush request This bit is used when FIFO mode is enabled. TXFRQ bit is set to flush the whole FIFO. This sets the flag TXFE (TXFIFO empty, bit 23 in the LPUART_ISR register). Note: In FIFO mode, the TXFNF flag is reset during the flush request until TxFIFO is empty in order to ensure that no data are written in the data register..

LPUART_ISR

LPUART interrupt and status register

Offset: 0x1c, size: 32, reset: 0x008000C0, access: Unspecified

21/21 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TXFT
r
RXFT
r
RXFF
r
TXFE
r
REACK
r
TEACK
r
WUF
r
RWU
r
SBKF
r
CMF
r
BUSY
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CTS
r
CTSIF
r
TXFNF
r
TC
r
RXFNE
r
IDLE
r
ORE
r
NE
r
FE
r
PE
r
Toggle fields

PE

Bit 0: Parity error This bit is set by hardware when a parity error occurs in Reception mode. It is cleared by software, writing 1 to the PECF in the LPUART_ICR register. An interrupt is generated if PEIE = 1 in the LPUART_CR1 register. Note: This error is associated with the character in the LPUART_RDR..

FE

Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the LPUART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE1=11 in the LPUART_CR3 register. Note: This error is associated with the character in the LPUART_RDR..

NE

Bit 2: Start bit noise detection flag This bit is set by hardware when noise is detected on the start bit of a received frame. It is cleared by software, writing 1 to the NFCF bit in the LPUART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXFNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. Note: This error is associated with the character in the LPUART_RDR..

ORE

Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the LPUART_RDR register while RXFF = 1. It is cleared by a software, writing 1 to the ORECF, in the LPUART_ICR register. An interrupt is generated if RXFNEIE=1 in the LPUART_CR1 register, or EIE = 1 in the LPUART_CR3 register. Note: When this bit is set, the LPUART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. Note: This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the LPUART_CR3 register..

IDLE

Bit 4: Idle line detected This bit is set by hardware when an Idle line is detected. An interrupt is generated if IDLEIE=1 in the LPUART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the LPUART_ICR register. Note: The IDLE bit is not set again until the RXFNE bit has been set (i.e. a new idle line occurs). Note: If Mute mode is enabled (MME=1), IDLE is set if the LPUART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..

RXFNE

Bit 5: RXFIFO not empty RXFNE bit is set by hardware when the RXFIFO is not empty, and so data can be read from the LPUART_RDR register. Every read of the LPUART_RDR frees a location in the RXFIFO. It is cleared when the RXFIFO is empty. The RXFNE flag can also be cleared by writing 1 to the RXFRQ in the LPUART_RQR register. An interrupt is generated if RXFNEIE=1 in the LPUART_CR1 register..

TC

Bit 6: Transmission complete This bit indicates that the last data written in the LPUART_TDR has been transmitted out of the shift register. The TC flag behaves as follows: When TDN = 0, the TC flag is set when the transmission of a frame containing data is complete and when TXFE is set. When TDN is equal to the number of data in the TXFIFO, the TC flag is set when TXFIFO is empty and TDN is reached. When TDN is greater than the number of data in the TXFIFO, TC remains cleared until the TXFIFO is filled again to reach the programmed number of data to be transferred. When TDN is less than the number of data in the TXFIFO, TC is set when TDN is reached even if the TXFIFO is not empty. An interrupt is generated if TCIE=1 in the LPUART_CR1 register. TC bit is cleared by software by writing 1 to the TCCF in the LPUART_ICR register or by writing to the LPUART_TDR register..

TXFNF

Bit 7: TXFIFO not full TXFNF is set by hardware when TXFIFO is not full, and so data can be written in the LPUART_TDR. Every write in the LPUART_TDR places the data in the TXFIFO. This flag remains set until the TXFIFO is full. When the TXFIFO is full, this flag is cleared indicating that data can not be written into the LPUART_TDR. The TXFNF is kept reset during the flush request until TXFIFO is empty. After sending the flush request (by setting TXFRQ bit), the flag TXFNF must be checked prior to writing in TXFIFO (TXFNF and TXFE are set at the same time). An interrupt is generated if the TXFNFIE bit =1 in the LPUART_CR1 register. Note: This bit is used during single buffer transmission..

CTSIF

Bit 9: CTS interrupt flag This bit is set by hardware when the CTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the LPUART_ICR register. An interrupt is generated if CTSIE=1 in the LPUART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

CTS

Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the CTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

BUSY

Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..

CMF

Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the LPUART_ICR register. An interrupt is generated if CMIE=1in the LPUART_CR1 register..

SBKF

Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the LPUART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..

RWU

Bit 19: Receiver wake-up from Mute mode This bit indicates if the LPUART is in Mute mode. It is cleared/set by hardware when a wake-up/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the LPUART_CR1 register. When wake-up on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the LPUART_RQR register. Note: If the LPUART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value..

WUF

Bit 20: Wake-up from low-power mode flag This bit is set by hardware, when a wake-up event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the LPUART_ICR register. An interrupt is generated if WUFIE=1 in the LPUART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section132.3: LPUART implementation on page1914..

TEACK

Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the LPUART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the LPUART_CR1 register, in order to respect the TE=0 minimum period..

REACK

Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the LPUART. It can be used to verify that the LPUART is ready for reception before entering low-power mode. Note: If the LPUART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value..

TXFE

Bit 23: TXFIFO Empty This bit is set by hardware when TXFIFO is Empty. When the TXFIFO contains at least one data, this flag is cleared. The TXFE flag can also be set by writing 1 to the bit TXFRQ (bit 4) in the LPUART_RQR register. An interrupt is generated if the TXFEIE bit =1 (bit 30) in the LPUART_CR1 register..

RXFF

Bit 24: RXFIFO Full This bit is set by hardware when the number of received data corresponds to RXFIFO1size1+11 (RXFIFO full + 1 data in the LPUART_RDR register. An interrupt is generated if the RXFFIE bit =1 in the LPUART_CR1 register..

RXFT

Bit 26: RXFIFO threshold flag This bit is set by hardware when the RXFIFO reaches the threshold programmed in RXFTCFG in LPUART_CR3 register i.e. the Receive FIFO contains RXFTCFG data. An interrupt is generated if the RXFTIE bit =1 (bit 27) in the LPUART_CR3 register..

TXFT

Bit 27: TXFIFO threshold flag This bit is set by hardware when the TXFIFO reaches the threshold programmed in TXFTCFG in LPUART_CR3 register i.e. the TXFIFO contains TXFTCFG empty locations. An interrupt is generated if the TXFTIE bit =1 (bit 31) in the LPUART_CR3 register..

LPUART_ISR_ALTERNATE

LPUART interrupt and status register

Offset: 0x1c, size: 32, reset: 0x008000C0, access: Unspecified

17/17 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
REACK
r
TEACK
r
WUF
r
RWU
r
SBKF
r
CMF
r
BUSY
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CTS
r
CTSIF
r
TXE
r
TC
r
RXNE
r
IDLE
r
ORE
r
NE
r
FE
r
PE
r
Toggle fields

PE

Bit 0: Parity error This bit is set by hardware when a parity error occurs in Reception mode. It is cleared by software, writing 1 to the PECF in the LPUART_ICR register. An interrupt is generated if PEIE = 1 in the LPUART_CR1 register. Note: In FIFO mode, this error is associated with the character in the LPUART_RDR..

FE

Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the LPUART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE1=11 in the LPUART_CR3 register. Note: In FIFO mode, this error is associated with the character in the LPUART_RDR..

NE

Bit 2: Start bit noise detection flag This bit is set by hardware when noise is detected on the start bit of a received frame. It is cleared by software, writing 1 to the NFCF bit in the LPUART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXNE/RXFNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. Note: In FIFO mode, this error is associated with the character in the LPUART_RDR..

ORE

Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the LPUART_RDR register while RXNE=1 (RXFF = 1 in case FIFO mode is enabled). It is cleared by a software, writing 1 to the ORECF, in the LPUART_ICR register. An interrupt is generated if RXNEIE=1 in the LPUART_CR1 register, or EIE = 1 in the LPUART_CR3 register. Note: When this bit is set, the LPUART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. Note: This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the LPUART_CR3 register..

IDLE

Bit 4: Idle line detected This bit is set by hardware when an Idle Line is detected. An interrupt is generated if IDLEIE=1 in the LPUART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the LPUART_ICR register. Note: The IDLE bit is not set again until the RXNE bit has been set (i.e. a new idle line occurs). Note: If Mute mode is enabled (MME=1), IDLE is set if the LPUART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..

RXNE

Bit 5: Read data register not empty RXNE bit is set by hardware when the content of the LPUART_RDR shift register has been transferred to the LPUART_RDR register. It is cleared by a read to the LPUART_RDR register. The RXNE flag can also be cleared by writing 1 to the RXFRQ in the LPUART_RQR register. The RXFNE flag can also be cleared by writing 1 to the RXFRQ in the LPUART_RQR register. An interrupt is generated if RXNEIE=1 in the LPUART_CR1 register..

TC

Bit 6: Transmission complete This bit indicates that the last data written in the USART_TDR has been transmitted out of the shift register. The TC flag is set when the transmission of a frame containing data is complete and when TXE is set. An interrupt is generated if TCIE=1 in the LPUART_CR1 register. TC bit is cleared by software by writing 1 to the TCCF in the USART_ICR register or by writing to the USART_TDR register..

TXE

Bit 7: Transmit data register empty TXE is set by hardware when the content of the LPUART_TDR register has been transferred into the shift register. It is cleared by a write to the LPUART_TDR register. An interrupt is generated if the TXEIE bit =1 in the LPUART_CR1 register. Note: This bit is used during single buffer transmission..

CTSIF

Bit 9: CTS interrupt flag This bit is set by hardware when the CTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the LPUART_ICR register. An interrupt is generated if CTSIE=1 in the LPUART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

CTS

Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the CTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

BUSY

Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..

CMF

Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the LPUART_ICR register. An interrupt is generated if CMIE=1in the LPUART_CR1 register..

SBKF

Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the LPUART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..

RWU

Bit 19: Receiver wake-up from Mute mode This bit indicates if the LPUART is in Mute mode. It is cleared/set by hardware when a wake-up/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the LPUART_CR1 register. When wake-up on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the LPUART_RQR register. Note: If the LPUART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value..

WUF

Bit 20: Wake-up from low-power mode flag This bit is set by hardware, when a wake-up event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the LPUART_ICR register. An interrupt is generated if WUFIE=1 in the LPUART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section132.3: LPUART implementation on page1914..

TEACK

Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the LPUART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the LPUART_CR1 register, in order to respect the TE=0 minimum period..

REACK

Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the LPUART. It can be used to verify that the LPUART is ready for reception before entering low-power mode. Note: If the LPUART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value..

LPUART_ICR

LPUART interrupt flag clear register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/9 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
WUCF
w
CMCF
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CTSCF
w
TCCF
w
IDLECF
w
ORECF
w
NECF
w
FECF
w
PECF
w
Toggle fields

PECF

Bit 0: Parity error clear flag Writing 1 to this bit clears the PE flag in the LPUART_ISR register..

FECF

Bit 1: Framing error clear flag Writing 1 to this bit clears the FE flag in the LPUART_ISR register..

NECF

Bit 2: Noise detected clear flag Writing 1 to this bit clears the NE flag in the LPUART_ISR register..

ORECF

Bit 3: Overrun error clear flag Writing 1 to this bit clears the ORE flag in the LPUART_ISR register..

IDLECF

Bit 4: Idle line detected clear flag Writing 1 to this bit clears the IDLE flag in the LPUART_ISR register..

TCCF

Bit 6: Transmission complete clear flag Writing 1 to this bit clears the TC flag in the LPUART_ISR register..

CTSCF

Bit 9: CTS clear flag Writing 1 to this bit clears the CTSIF flag in the LPUART_ISR register..

CMCF

Bit 17: Character match clear flag Writing 1 to this bit clears the CMF flag in the LPUART_ISR register..

WUCF

Bit 20: Wake-up from low-power mode clear flag Writing 1 to this bit clears the WUF flag in the USART_ISR register. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section132.3: LPUART implementation on page1914..

LPUART_RDR

LPUART receive data register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RDR
r
Toggle fields

RDR

Bits 0-8: Receive data value Contains the received data character. The RDR register provides the parallel interface between the input shift register and the internal bus (see Figure1254). When receiving with the parity enabled, the value read in the MSB bit is the received parity bit..

LPUART_TDR

LPUART transmit data register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TDR
rw
Toggle fields

TDR

Bits 0-8: Transmit data value Contains the data character to be transmitted. The TDR register provides the parallel interface between the internal bus and the output shift register (see Figure1254). When transmitting with the parity enabled (PCE bit set to 1 in the LPUART_CR1 register), the value written in the MSB (bit 7 or bit 8 depending on the data length) has no effect because it is replaced by the parity. Note: This register must be written only when TXE/TXFNF=1..

LPUART_PRESC

LPUART prescaler register

Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PRESCALER
rw
Toggle fields

PRESCALER

Bits 0-3: Clock prescaler The LPUART input clock can be divided by a prescaler: Remaining combinations: Reserved. Note: When PRESCALER is programmed with a value different of the allowed ones, programmed prescaler value is equal to 1011 i.e. input clock divided by 256..

OPAMP

0x40007800: OPAMP address block description

1/15 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 OPAMP_CSR
0x4 OPAMP_OTR
0x8 OPAMP_LPOTR
Toggle registers

OPAMP_CSR

OPAMP control/status register

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

1/11 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OPA_RANGE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CALOUT
r
USERTRIM
rw
CALSEL
rw
CALON
rw
VP_SEL
rw
VM_SEL
rw
PGA_GAIN
rw
OPAMODE
rw
OPALPM
rw
OPAEN
rw
Toggle fields

OPAEN

Bit 0: Operational amplifier Enable.

OPALPM

Bit 1: Operational amplifier Low Power Mode The operational amplifier must be disable to change this configuration..

OPAMODE

Bits 2-3: Operational amplifier PGA mode.

PGA_GAIN

Bits 4-5: Operational amplifier Programmable amplifier gain value.

VM_SEL

Bits 8-9: Inverting input selection These bits are used only when OPAMODE = 00, 01 or 10. 1x: Inverting input not externally connected. These configurations are valid only when OPAMODE = 10 (PGA mode).

VP_SEL

Bit 10: Non inverted input selection.

CALON

Bit 12: Calibration mode enabled.

CALSEL

Bit 13: Calibration selection.

USERTRIM

Bit 14: allows to switch from factory AOP offset trimmed values to AOP offset user trimmed values This bit is active for both mode normal and low-power..

CALOUT

Bit 15: Operational amplifier calibration output During calibration mode offset is trimmed when this signal toggle..

OPA_RANGE

Bit 31: Operational amplifier power supply range for stability All AOP must be in power down to allow AOP-RANGE bit write. It applies to all AOP embedded in the product..

OPAMP_OTR

OPAMP offset trimming register in normal mode

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TRIMOFFSETP
rw
TRIMOFFSETN
rw
Toggle fields

TRIMOFFSETN

Bits 0-4: Trim for NMOS differential pairs.

TRIMOFFSETP

Bits 8-12: Trim for PMOS differential pairs.

OPAMP_LPOTR

OPAMP offset trimming register in low-power mode

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TRIMLPOFFSETP
rw
TRIMLPOFFSETN
rw
Toggle fields

TRIMLPOFFSETN

Bits 0-4: Low-power mode trim for NMOS differential pairs.

TRIMLPOFFSETP

Bits 8-12: Low-power mode trim for PMOS differential pairs.

PWR

0x40007000: PWR register block

17/193 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 PWR_CR1
0x4 PWR_CR2
0x8 PWR_CR3
0xc PWR_CR4
0x10 PWR_SR1
0x14 PWR_SR2
0x18 PWR_SCR
0x20 PWR_PUCRA
0x24 PWR_PDCRA
0x28 PWR_PUCRB
0x2c PWR_PDCRB
0x30 PWR_PUCRC
0x34 PWR_PDCRC
0x38 PWR_PUCRD
0x3c PWR_PDCRD
0x40 PWR_PUCRE
0x44 PWR_PDCRE
0x48 PWR_PUCRF
0x4c PWR_PDCRF
Toggle registers

PWR_CR1

Power control register 1

Offset: 0x0, size: 32, reset: 0x00000208, access: Unspecified

0/7 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LPR
rw
VOS
rw
DBP
rw
FPD_LPSLP
rw
FPD_LPRUN
rw
FPD_STOP
rw
LPMS
rw
Toggle fields

LPMS

Bits 0-2: Low-power mode selection These bits select the low-power mode entered when CPU enters the deepsleep mode. 1xx: Shutdown mode Note: If LPR bit is set, Stop 2 mode cannot be selected and Stop 1 mode shall be entered instead of Stop 2. Note: In Standby mode, SRAM2 can be preserved or not, depending on RRS bit configuration in PWR_CR3..

FPD_STOP

Bit 3: Flash memory powered down during Stop mode. This bit determines whether the flash memory is put in power-down mode or remains in idle mode when the device enters Stop mode..

FPD_LPRUN

Bit 4: Flash memory powered down during Low-power run mode. This bit determines whether the flash memory is put in power-down mode or remains in idle mode when the device enters Low-power sleep mode..

FPD_LPSLP

Bit 5: Flash memory powered down during Low-power sleep mode. This bit determines whether the flash memory is put in power-down mode or remains in idle mode when the device enters Low-power sleep mode..

DBP

Bit 8: Disable backup domain write protection In reset state, the RTC and backup registers are protected against parasitic write access. This bit must be set to enable write access to these registers..

VOS

Bits 9-10: Voltage scaling range selection.

LPR

Bit 14: Low-power run When this bit is set, the regulator is switched from main mode (MR) to low-power mode (LPR). Note: Stop 2 mode cannot be entered when LPR bit is set. Stop 1 is entered instead..

PWR_CR2

Power control register 2

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
USV
rw
PVME4
rw
PVME3
rw
PVME1
rw
PLS
rw
PVDE
rw
Toggle fields

PVDE

Bit 0: Programmable voltage detector enable Note: This bit is write-protected when the bit PVDL (PVD Lock) is set in the SYSCFG_CBR register. Note: This bit is reset only by a system reset..

PLS

Bits 1-3: Programmable voltage detector level selection. These bits select the voltage threshold detected by the programmable voltage detector: Note: These bits are write-protected when the bit PVDL (PVD Lock) is set in the SYSCFG_CBR register. Note: These bits are reset only by a system reset..

PVME1

Bit 4: Peripheral voltage monitoring 1 enable: V<sub>DDUSB</sub> vs. 1.21V.

PVME3

Bit 5: Peripheral voltage monitoring 3 enable: V<sub>DDA</sub> vs. 1.621V.

PVME4

Bit 6: Peripheral voltage monitoring 4 enable: V<sub>DDA</sub> vs. 1.861V.

USV

Bit 10: V<sub>DDUSB</sub> USB supply valid This bit is used to validate the V<sub>DDUSB</sub> supply for electrical and logical isolation purpose. Setting this bit is mandatory to use the USB FS peripheral. If V<sub>DDUSB</sub> is not always present in the application, the PVM can be used to determine whether this supply is ready or not..

PWR_CR3

Power control register 3

Offset: 0x8, size: 32, reset: 0x00008000, access: Unspecified

0/10 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EIWUL
rw
APC
rw
ENULP
rw
RRS
rw
EWUP7
rw
EWUP5
rw
EWUP4
rw
EWUP3
rw
EWUP2
rw
EWUP1
rw
Toggle fields

EWUP1

Bit 0: Enable Wake-up pin WKUP1 When this bit is set, the external wake-up pin WKUP1 is enabled and triggers a wake-up from Standby or Shutdown event when a rising or a falling edge occurs. The active edge is configured via the WP1 bit in the PWR_CR4 register..

EWUP2

Bit 1: Enable Wake-up pin WKUP2 When this bit is set, the external wake-up pin WKUP2 is enabled and triggers a wake-up from Standby or Shutdown event when a rising or a falling edge occurs. The active edge is configured via the WP2 bit in the PWR_CR4 register..

EWUP3

Bit 2: Enable Wake-up pin WKUP3 When this bit is set, the external wake-up pin WKUP3 is enabled and triggers a wake-up from Standby or Shutdown event when a rising or a falling edge occurs. The active edge is configured via the WP3 bit in the PWR_CR4 register..

EWUP4

Bit 3: Enable Wake-up pin WKUP4 When this bit is set, the external wake-up pin WKUP4 is enabled and triggers a wake-up from Standby or Shutdown event when a rising or a falling edge occurs. The active edge is configured via the WP4 bit in the PWR_CR4 register..

EWUP5

Bit 4: Enable Wake-up pin WKUP5 When this bit is set, the external wake-up pin WKUP5 is enabled and triggers a wake-up from Standby or Shutdown event when a rising or a falling edge occurs.The active edge is configured via the WP5 bit in the PWR_CR4 register..

EWUP7

Bit 6: Enable Wake-up pin WKUP7. When this bit is set, the external wake-up pin WKUP7 is enabled and triggers a wake-up from Standby or Shutdown event when a rising or a falling edge occurs.The active edge is configured via the WP7 bit in the PWR_CR4 register..

RRS

Bit 8: SRAM2 retention in Standby mode.

ENULP

Bit 9: Enable ULP sampling When this bit is set, the BORL, BORH and PVD are periodically sampled instead continuous monitoring to reduce power consumption. Fast supply drop between two sample/compare phases is not detected in this mode. This bit has impact only on STOP2, Standby and shutdown low power modes..

APC

Bit 10: Apply pull-up and pull-down configuration When this bit is set, the I/O pull-up and pull-down configurations defined in the PWR_PUCRx and PWR_PDCRx registers are applied. When this bit is cleared, the PWR_PUCRx and PWR_PDCRx registers are not applied to the I/Os, instead the I/Os are in floating mode during Standby or configured according GPIO controller GPIOx_PUPDR register during RUN mode..

EIWUL

Bit 15: Enable internal wake-up line.

PWR_CR4

Power control register 4

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/8 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
VBRS
rw
VBE
rw
WP7
rw
WP5
rw
WP4
rw
WP3
rw
WP2
rw
WP1
rw
Toggle fields

WP1

Bit 0: Wake-up pin WKUP1 polarity This bit defines the polarity used for an event detection on external wake-up pin, WKUP1.

WP2

Bit 1: Wake-up pin WKUP2 polarity This bit defines the polarity used for an event detection on external wake-up pin, WKUP2.

WP3

Bit 2: Wake-up pin WKUP3 polarity This bit defines the polarity used for an event detection on external wake-up pin, WKUP3.

WP4

Bit 3: Wake-up pin WKUP4 polarity This bit defines the polarity used for an event detection on external wake-up pin, WKUP4.

WP5

Bit 4: Wake-up pin WKUP5 polarity This bit defines the polarity used for an event detection on external wake-up pin, WKUP5.

WP7

Bit 6: Wake-up pin WKUP7 polarity This bit defines the polarity used for an event detection on external wake-up pin, WKUP7.

VBE

Bit 8: V<sub>BAT</sub> battery charging enable.

VBRS

Bit 9: V<sub>BAT</sub> battery charging resistor selection.

PWR_SR1

Power status register 1

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

9/9 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
WUFI
r
STOPF
r
SBF
r
WUF7
r
WUF5
r
WUF4
r
WUF3
r
WUF2
r
WUF1
r
Toggle fields

WUF1

Bit 0: Wake-up flag 1 This bit is set when a wake-up event is detected on wake-up pin, WKUP1. It is cleared by writing 1 in the CWUF1 bit of the PWR_SCR register..

WUF2

Bit 1: Wake-up flag 2 This bit is set when a wake-up event is detected on wake-up pin, WKUP2. It is cleared by writing 1 in the CWUF2 bit of the PWR_SCR register..

WUF3

Bit 2: Wake-up flag 3 This bit is set when a wake-up event is detected on wake-up pin, WKUP3. It is cleared by writing 1 in the CWUF3 bit of the PWR_SCR register..

WUF4

Bit 3: Wake-up flag 4 This bit is set when a wake-up event is detected on wake-up pin,WKUP4. It is cleared by writing 1 in the CWUF4 bit of the PWR_SCR register..

WUF5

Bit 4: Wake-up flag 5 This bit is set when a wake-up event is detected on wake-up pin, WKUP5. It is cleared by writing 1 in the CWUF5 bit of the PWR_SCR register..

WUF7

Bit 6: Wake-up flag 7 This bit is set when a wake-up event is detected on wake-up pin, WKUP7. It is cleared by writing 1 in the CWUF7 bit of the PWR_SCR register..

SBF

Bit 8: Standby flag This bit is set by hardware when the device enters the Standby mode and is cleared by setting the CSBF bit in the PWR_SCR register, or by a power-on reset. It is not cleared by the system reset..

STOPF

Bits 9-11: Stop Flags These bits are set by hardware when the device enters any stop mode and are cleared by setting the CSBF bit in the PWR_SCR register, or by a power-on reset. It is not cleared by the system reset..

WUFI

Bit 15: Wake-up flag internal This bit is set when a wake-up is detected on the internal wake-up line. It is cleared when all internal wake-up sources are cleared..

PWR_SR2

Power status register 2

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

8/8 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PVMO4
r
PVMO3
r
PVMO1
r
PVDO
r
VOSF
r
REGLPF
r
REGLPS
r
FLASH_RDY
r
Toggle fields

FLASH_RDY

Bit 7: Flash ready flag This bit is set by hardware to indicate when the flash memory is readey to be accessed after wake-up from power-down. To place the flash memory in power-down, set either FPD_LPRUN, FPD_LPSLP or FPD_STP bits. Note : If the system boots from SRAM, the user application must wait until the FLASH_RDY bit is set, prior to jumping to flash memory..

REGLPS

Bit 8: Low-power regulator started This bit provides the information whether the low-power regulator is ready after a power-on reset or a Standby/Shutdown. If the Standby mode is entered while REGLPS bit is still cleared, the wake-up from Standby mode time may be increased..

REGLPF

Bit 9: Low-power regulator flag This bit is set by hardware when the MCU is in Low-power run mode. When the MCU exits from the Low-power run mode, this bit remains at 1 until the regulator is ready in main mode. A polling on this bit must be done before increasing the product frequency. This bit is cleared by hardware when the regulator is ready..

VOSF

Bit 10: Voltage scaling flag A delay is required for the internal regulator to be ready after the voltage scaling has been changed. VOSF indicates that the regulator reached the voltage level defined with VOS bits of the PWR_CR1 register..

PVDO

Bit 11: Programmable voltage detector output.

PVMO1

Bit 12: Peripheral voltage monitoring output: V<sub>DDUSB</sub> vs. 1.2 V Note: PVMO1 is cleared when PVM1 is disabled (PVME1 = 0). After enabling PVM1, the PVM1 output is valid after the PVM1 wake-up time..

PVMO3

Bit 14: Peripheral voltage monitoring output: V<sub>DDA</sub> vs. 1.621V Note: PVMO3 is cleared when PVM3 is disabled (PVME3 = 0). After enabling PVM3, the PVM3 output is valid after the PVM3 wake-up time..

PVMO4

Bit 15: Peripheral voltage monitoring output: V<sub>DDA</sub> vs. 2.21V Note: PVMO4 is cleared when PVM4 is disabled (PVME4 = 0). After enabling PVM4, the PVM4 output is valid after the PVM4 wake-up time..

PWR_SCR

Power status clear register

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/7 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CSBF
w
CWUF7
w
CWUF5
w
CWUF4
w
CWUF3
w
CWUF2
w
CWUF1
w
Toggle fields

CWUF1

Bit 0: Clear wake-up flag 1 Setting this bit clears the WUF1 flag in the PWR_SR1 register..

CWUF2

Bit 1: Clear wake-up flag 2 Setting this bit clears the WUF2 flag in the PWR_SR1 register..

CWUF3

Bit 2: Clear wake-up flag 3 Setting this bit clears the WUF3 flag in the PWR_SR1 register..

CWUF4

Bit 3: Clear wake-up flag 4 Setting this bit clears the WUF4 flag in the PWR_SR1 register..

CWUF5

Bit 4: Clear wake-up flag 5 Setting this bit clears the WUF5 flag in the PWR_SR1 register..

CWUF7

Bit 6: Clear wake-up flag 7 Setting this bit clears the WUF7 flag in the PWR_SR1 register..

CSBF

Bit 8: Clear standby flag Setting this bit clears the SBF flag in the PWR_SR1 register..

PWR_PUCRA

Power Port A pull-up control register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PU15
rw
PU14
rw
PU13
rw
PU12
rw
PU11
rw
PU10
rw
PU9
rw
PU8
rw
PU7
rw
PU6
rw
PU5
rw
PU4
rw
PU3
rw
PU2
rw
PU1
rw
PU0
rw
Toggle fields

PU0

Bit 0: Port A pull-up bit y (y1=115 to 0) When set, this bit activates the pull-up on PA[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU1

Bit 1: Port A pull-up bit y (y1=115 to 0) When set, this bit activates the pull-up on PA[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU2

Bit 2: Port A pull-up bit y (y1=115 to 0) When set, this bit activates the pull-up on PA[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU3

Bit 3: Port A pull-up bit y (y1=115 to 0) When set, this bit activates the pull-up on PA[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU4

Bit 4: Port A pull-up bit y (y1=115 to 0) When set, this bit activates the pull-up on PA[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU5

Bit 5: Port A pull-up bit y (y1=115 to 0) When set, this bit activates the pull-up on PA[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU6

Bit 6: Port A pull-up bit y (y1=115 to 0) When set, this bit activates the pull-up on PA[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU7

Bit 7: Port A pull-up bit y (y1=115 to 0) When set, this bit activates the pull-up on PA[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU8

Bit 8: Port A pull-up bit y (y1=115 to 0) When set, this bit activates the pull-up on PA[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU9

Bit 9: Port A pull-up bit y (y1=115 to 0) When set, this bit activates the pull-up on PA[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU10

Bit 10: Port A pull-up bit y (y1=115 to 0) When set, this bit activates the pull-up on PA[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU11

Bit 11: Port A pull-up bit y (y1=115 to 0) When set, this bit activates the pull-up on PA[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU12

Bit 12: Port A pull-up bit y (y1=115 to 0) When set, this bit activates the pull-up on PA[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU13

Bit 13: Port A pull-up bit y (y1=115 to 0) When set, this bit activates the pull-up on PA[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU14

Bit 14: Port A pull-up bit y (y1=115 to 0) When set, this bit activates the pull-up on PA[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU15

Bit 15: Port A pull-up bit y (y1=115 to 0) When set, this bit activates the pull-up on PA[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PWR_PDCRA

Power Port A pull-down control register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PD15
rw
PD14
rw
PD13
rw
PD12
rw
PD11
rw
PD10
rw
PD9
rw
PD8
rw
PD7
rw
PD6
rw
PD5
rw
PD4
rw
PD3
rw
PD2
rw
PD1
rw
PD0
rw
Toggle fields

PD0

Bit 0: Port A pull-down bit y When set, this bit activates the pull-down on PA[y] when APC bit is set in PWR_CR3 register..

PD1

Bit 1: Port A pull-down bit y When set, this bit activates the pull-down on PA[y] when APC bit is set in PWR_CR3 register..

PD2

Bit 2: Port A pull-down bit y When set, this bit activates the pull-down on PA[y] when APC bit is set in PWR_CR3 register..

PD3

Bit 3: Port A pull-down bit y When set, this bit activates the pull-down on PA[y] when APC bit is set in PWR_CR3 register..

PD4

Bit 4: Port A pull-down bit y When set, this bit activates the pull-down on PA[y] when APC bit is set in PWR_CR3 register..

PD5

Bit 5: Port A pull-down bit y When set, this bit activates the pull-down on PA[y] when APC bit is set in PWR_CR3 register..

PD6

Bit 6: Port A pull-down bit y When set, this bit activates the pull-down on PA[y] when APC bit is set in PWR_CR3 register..

PD7

Bit 7: Port A pull-down bit y When set, this bit activates the pull-down on PA[y] when APC bit is set in PWR_CR3 register..

PD8

Bit 8: Port A pull-down bit y When set, this bit activates the pull-down on PA[y] when APC bit is set in PWR_CR3 register..

PD9

Bit 9: Port A pull-down bit y When set, this bit activates the pull-down on PA[y] when APC bit is set in PWR_CR3 register..

PD10

Bit 10: Port A pull-down bit y When set, this bit activates the pull-down on PA[y] when APC bit is set in PWR_CR3 register..

PD11

Bit 11: Port A pull-down bit y When set, this bit activates the pull-down on PA[y] when APC bit is set in PWR_CR3 register..

PD12

Bit 12: Port A pull-down bit y When set, this bit activates the pull-down on PA[y] when APC bit is set in PWR_CR3 register..

PD13

Bit 13: Port A pull-down bit y When set, this bit activates the pull-down on PA[y] when APC bit is set in PWR_CR3 register..

PD14

Bit 14: Port A pull-down bit y When set, this bit activates the pull-down on PA[y] when APC bit is set in PWR_CR3 register..

PD15

Bit 15: Port A pull-down bit y When set, this bit activates the pull-down on PA[y] when APC bit is set in PWR_CR3 register..

PWR_PUCRB

Power Port B pull-up control register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PU15
rw
PU14
rw
PU13
rw
PU12
rw
PU11
rw
PU10
rw
PU9
rw
PU8
rw
PU7
rw
PU6
rw
PU5
rw
PU4
rw
PU3
rw
PU2
rw
PU1
rw
PU0
rw
Toggle fields

PU0

Bit 0: Port B pull-up bit y When set, this bit activates the pull-up on PB[y] when APC bit is set in PWR_CR3 register..

PU1

Bit 1: Port B pull-up bit y When set, this bit activates the pull-up on PB[y] when APC bit is set in PWR_CR3 register..

PU2

Bit 2: Port B pull-up bit y When set, this bit activates the pull-up on PB[y] when APC bit is set in PWR_CR3 register..

PU3

Bit 3: Port B pull-up bit y When set, this bit activates the pull-up on PB[y] when APC bit is set in PWR_CR3 register..

PU4

Bit 4: Port B pull-up bit y When set, this bit activates the pull-up on PB[y] when APC bit is set in PWR_CR3 register..

PU5

Bit 5: Port B pull-up bit y When set, this bit activates the pull-up on PB[y] when APC bit is set in PWR_CR3 register..

PU6

Bit 6: Port B pull-up bit y When set, this bit activates the pull-up on PB[y] when APC bit is set in PWR_CR3 register..

PU7

Bit 7: Port B pull-up bit y When set, this bit activates the pull-up on PB[y] when APC bit is set in PWR_CR3 register..

PU8

Bit 8: Port B pull-up bit y When set, this bit activates the pull-up on PB[y] when APC bit is set in PWR_CR3 register..

PU9

Bit 9: Port B pull-up bit y When set, this bit activates the pull-up on PB[y] when APC bit is set in PWR_CR3 register..

PU10

Bit 10: Port B pull-up bit y When set, this bit activates the pull-up on PB[y] when APC bit is set in PWR_CR3 register..

PU11

Bit 11: Port B pull-up bit y When set, this bit activates the pull-up on PB[y] when APC bit is set in PWR_CR3 register..

PU12

Bit 12: Port B pull-up bit y When set, this bit activates the pull-up on PB[y] when APC bit is set in PWR_CR3 register..

PU13

Bit 13: Port B pull-up bit y When set, this bit activates the pull-up on PB[y] when APC bit is set in PWR_CR3 register..

PU14

Bit 14: Port B pull-up bit y When set, this bit activates the pull-up on PB[y] when APC bit is set in PWR_CR3 register..

PU15

Bit 15: Port B pull-up bit y When set, this bit activates the pull-up on PB[y] when APC bit is set in PWR_CR3 register..

PWR_PDCRB

Power Port B pull-down control register

Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PD15
rw
PD14
rw
PD13
rw
PD12
rw
PD11
rw
PD10
rw
PD9
rw
PD8
rw
PD7
rw
PD6
rw
PD5
rw
PD4
rw
PD3
rw
PD2
rw
PD1
rw
PD0
rw
Toggle fields

PD0

Bit 0: Port B pull-down bit y When set, this bit activates the pull-down on PB[y] when APC bit is set in PWR_CR3 register..

PD1

Bit 1: Port B pull-down bit y When set, this bit activates the pull-down on PB[y] when APC bit is set in PWR_CR3 register..

PD2

Bit 2: Port B pull-down bit y When set, this bit activates the pull-down on PB[y] when APC bit is set in PWR_CR3 register..

PD3

Bit 3: Port B pull-down bit y When set, this bit activates the pull-down on PB[y] when APC bit is set in PWR_CR3 register..

PD4

Bit 4: Port B pull-down bit y When set, this bit activates the pull-down on PB[y] when APC bit is set in PWR_CR3 register..

PD5

Bit 5: Port B pull-down bit y When set, this bit activates the pull-down on PB[y] when APC bit is set in PWR_CR3 register..

PD6

Bit 6: Port B pull-down bit y When set, this bit activates the pull-down on PB[y] when APC bit is set in PWR_CR3 register..

PD7

Bit 7: Port B pull-down bit y When set, this bit activates the pull-down on PB[y] when APC bit is set in PWR_CR3 register..

PD8

Bit 8: Port B pull-down bit y When set, this bit activates the pull-down on PB[y] when APC bit is set in PWR_CR3 register..

PD9

Bit 9: Port B pull-down bit y When set, this bit activates the pull-down on PB[y] when APC bit is set in PWR_CR3 register..

PD10

Bit 10: Port B pull-down bit y When set, this bit activates the pull-down on PB[y] when APC bit is set in PWR_CR3 register..

PD11

Bit 11: Port B pull-down bit y When set, this bit activates the pull-down on PB[y] when APC bit is set in PWR_CR3 register..

PD12

Bit 12: Port B pull-down bit y When set, this bit activates the pull-down on PB[y] when APC bit is set in PWR_CR3 register..

PD13

Bit 13: Port B pull-down bit y When set, this bit activates the pull-down on PB[y] when APC bit is set in PWR_CR3 register..

PD14

Bit 14: Port B pull-down bit y When set, this bit activates the pull-down on PB[y] when APC bit is set in PWR_CR3 register..

PD15

Bit 15: Port B pull-down bit y When set, this bit activates the pull-down on PB[y] when APC bit is set in PWR_CR3 register..

PWR_PUCRC

Power Port C pull-up control register

Offset: 0x30, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PU15
rw
PU14
rw
PU13
rw
PU12
rw
PU11
rw
PU10
rw
PU9
rw
PU8
rw
PU7
rw
PU6
rw
PU5
rw
PU4
rw
PU3
rw
PU2
rw
PU1
rw
PU0
rw
Toggle fields

PU0

Bit 0: Port C pull-up bit y When set, this bit activates the pull-up on PC[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU1

Bit 1: Port C pull-up bit y When set, this bit activates the pull-up on PC[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU2

Bit 2: Port C pull-up bit y When set, this bit activates the pull-up on PC[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU3

Bit 3: Port C pull-up bit y When set, this bit activates the pull-up on PC[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU4

Bit 4: Port C pull-up bit y When set, this bit activates the pull-up on PC[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU5

Bit 5: Port C pull-up bit y When set, this bit activates the pull-up on PC[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU6

Bit 6: Port C pull-up bit y When set, this bit activates the pull-up on PC[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU7

Bit 7: Port C pull-up bit y When set, this bit activates the pull-up on PC[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU8

Bit 8: Port C pull-up bit y When set, this bit activates the pull-up on PC[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU9

Bit 9: Port C pull-up bit y When set, this bit activates the pull-up on PC[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU10

Bit 10: Port C pull-up bit y When set, this bit activates the pull-up on PC[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU11

Bit 11: Port C pull-up bit y When set, this bit activates the pull-up on PC[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU12

Bit 12: Port C pull-up bit y When set, this bit activates the pull-up on PC[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU13

Bit 13: Port C pull-up bit y When set, this bit activates the pull-up on PC[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU14

Bit 14: Port C pull-up bit y When set, this bit activates the pull-up on PC[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU15

Bit 15: Port C pull-up bit y When set, this bit activates the pull-up on PC[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PWR_PDCRC

Power Port C pull-down control register

Offset: 0x34, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PD15
rw
PD14
rw
PD13
rw
PD12
rw
PD11
rw
PD10
rw
PD9
rw
PD8
rw
PD7
rw
PD6
rw
PD5
rw
PD4
rw
PD3
rw
PD2
rw
PD1
rw
PD0
rw
Toggle fields

PD0

Bit 0: Port C pull-down bit y When set, this bit activates the pull-down on PC[y] when APC bit is set in PWR_CR3 register..

PD1

Bit 1: Port C pull-down bit y When set, this bit activates the pull-down on PC[y] when APC bit is set in PWR_CR3 register..

PD2

Bit 2: Port C pull-down bit y When set, this bit activates the pull-down on PC[y] when APC bit is set in PWR_CR3 register..

PD3

Bit 3: Port C pull-down bit y When set, this bit activates the pull-down on PC[y] when APC bit is set in PWR_CR3 register..

PD4

Bit 4: Port C pull-down bit y When set, this bit activates the pull-down on PC[y] when APC bit is set in PWR_CR3 register..

PD5

Bit 5: Port C pull-down bit y When set, this bit activates the pull-down on PC[y] when APC bit is set in PWR_CR3 register..

PD6

Bit 6: Port C pull-down bit y When set, this bit activates the pull-down on PC[y] when APC bit is set in PWR_CR3 register..

PD7

Bit 7: Port C pull-down bit y When set, this bit activates the pull-down on PC[y] when APC bit is set in PWR_CR3 register..

PD8

Bit 8: Port C pull-down bit y When set, this bit activates the pull-down on PC[y] when APC bit is set in PWR_CR3 register..

PD9

Bit 9: Port C pull-down bit y When set, this bit activates the pull-down on PC[y] when APC bit is set in PWR_CR3 register..

PD10

Bit 10: Port C pull-down bit y When set, this bit activates the pull-down on PC[y] when APC bit is set in PWR_CR3 register..

PD11

Bit 11: Port C pull-down bit y When set, this bit activates the pull-down on PC[y] when APC bit is set in PWR_CR3 register..

PD12

Bit 12: Port C pull-down bit y When set, this bit activates the pull-down on PC[y] when APC bit is set in PWR_CR3 register..

PD13

Bit 13: Port C pull-down bit y When set, this bit activates the pull-down on PC[y] when APC bit is set in PWR_CR3 register..

PD14

Bit 14: Port C pull-down bit y When set, this bit activates the pull-down on PC[y] when APC bit is set in PWR_CR3 register..

PD15

Bit 15: Port C pull-down bit y When set, this bit activates the pull-down on PC[y] when APC bit is set in PWR_CR3 register..

PWR_PUCRD

Power Port D pull-up control register

Offset: 0x38, size: 32, reset: 0x00000000, access: Unspecified

0/13 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PU13
rw
PU12
rw
PU11
rw
PU10
rw
PU9
rw
PU8
rw
PU6
rw
PU5
rw
PU4
rw
PU3
rw
PU2
rw
PU1
rw
PU0
rw
Toggle fields

PU0

Bit 0: Port D pull-up bit y When set, this bit activates the pull-up on PD[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU1

Bit 1: Port D pull-up bit y When set, this bit activates the pull-up on PD[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU2

Bit 2: Port D pull-up bit y When set, this bit activates the pull-up on PD[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU3

Bit 3: Port D pull-up bit y When set, this bit activates the pull-up on PD[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU4

Bit 4: Port D pull-up bit y When set, this bit activates the pull-up on PD[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU5

Bit 5: Port D pull-up bit y When set, this bit activates the pull-up on PD[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU6

Bit 6: Port D pull-up bit y When set, this bit activates the pull-up on PD[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU8

Bit 8: Port D pull-up bit y When set, this bit activates the pull-up on PD[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU9

Bit 9: Port D pull-up bit y When set, this bit activates the pull-up on PD[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU10

Bit 10: Port D pull-up bit y When set, this bit activates the pull-up on PD[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU11

Bit 11: Port D pull-up bit y When set, this bit activates the pull-up on PD[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU12

Bit 12: Port D pull-up bit y When set, this bit activates the pull-up on PD[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU13

Bit 13: Port D pull-up bit y When set, this bit activates the pull-up on PD[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PWR_PDCRD

Power Port D pull-down control register

Offset: 0x3c, size: 32, reset: 0x00000000, access: Unspecified

0/13 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PD13
rw
PD12
rw
PD11
rw
PD10
rw
PD9
rw
PD8
rw
PD6
rw
PD5
rw
PD4
rw
PD3
rw
PD2
rw
PD1
rw
PD0
rw
Toggle fields

PD0

Bit 0: Port D pull-down bit y When set, this bit activates the pull-down on PD[y] when APC bit is set in PWR_CR3 register..

PD1

Bit 1: Port D pull-down bit y When set, this bit activates the pull-down on PD[y] when APC bit is set in PWR_CR3 register..

PD2

Bit 2: Port D pull-down bit y When set, this bit activates the pull-down on PD[y] when APC bit is set in PWR_CR3 register..

PD3

Bit 3: Port D pull-down bit y When set, this bit activates the pull-down on PD[y] when APC bit is set in PWR_CR3 register..

PD4

Bit 4: Port D pull-down bit y When set, this bit activates the pull-down on PD[y] when APC bit is set in PWR_CR3 register..

PD5

Bit 5: Port D pull-down bit y When set, this bit activates the pull-down on PD[y] when APC bit is set in PWR_CR3 register..

PD6

Bit 6: Port D pull-down bit y When set, this bit activates the pull-down on PD[y] when APC bit is set in PWR_CR3 register..

PD8

Bit 8: Port D pull-down bit y When set, this bit activates the pull-down on PD[y] when APC bit is set in PWR_CR3 register..

PD9

Bit 9: Port D pull-down bit y When set, this bit activates the pull-down on PD[y] when APC bit is set in PWR_CR3 register..

PD10

Bit 10: Port D pull-down bit y When set, this bit activates the pull-down on PD[y] when APC bit is set in PWR_CR3 register..

PD11

Bit 11: Port D pull-down bit y When set, this bit activates the pull-down on PD[y] when APC bit is set in PWR_CR3 register..

PD12

Bit 12: Port D pull-down bit y When set, this bit activates the pull-down on PD[y] when APC bit is set in PWR_CR3 register..

PD13

Bit 13: Port D pull-down bit y When set, this bit activates the pull-down on PD[y] when APC bit is set in PWR_CR3 register..

PWR_PUCRE

Power Port E pull-up control register

Offset: 0x40, size: 32, reset: 0x00000000, access: Unspecified

0/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PU9
rw
PU8
rw
PU7
rw
PU3
rw
Toggle fields

PU3

Bit 3: Port E pull-up bit 3 When set, this bit activates the pull-up on PE[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU7

Bit 7: Port E pull-up bit y When set, this bit activates the pull-up on PE[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU8

Bit 8: Port E pull-up bit y When set, this bit activates the pull-up on PE[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU9

Bit 9: Port E pull-up bit y When set, this bit activates the pull-up on PE[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PWR_PDCRE

Power Port E pull-down control register

Offset: 0x44, size: 32, reset: 0x00000000, access: Unspecified

0/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PD9
rw
PD8
rw
PD7
rw
PD3
rw
Toggle fields

PD3

Bit 3: Port E pull-down bit 3 When set, this bit activates the pull-down on PE[y] when APC bit is set in PWR_CR3 register..

PD7

Bit 7: Port E pull-down bit y When set, this bit activates the pull-down on PE[y] when APC bit is set in PWR_CR3 register..

PD8

Bit 8: Port E pull-down bit y When set, this bit activates the pull-down on PE[y] when APC bit is set in PWR_CR3 register..

PD9

Bit 9: Port E pull-down bit y When set, this bit activates the pull-down on PE[y] when APC bit is set in PWR_CR3 register..

PWR_PUCRF

Power Port F pull-up control register

Offset: 0x48, size: 32, reset: 0x00000000, access: Unspecified

0/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PU3
rw
PU2
rw
PU1
rw
PU0
rw
Toggle fields

PU0

Bit 0: Port F pull-up bit y When set, this bit activates the pull-up on PH[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU1

Bit 1: Port F pull-up bit y When set, this bit activates the pull-up on PH[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU2

Bit 2: Port F pull-up bit y When set, this bit activates the pull-up on PH[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PU3

Bit 3: Port F pull-up bit y When set, this bit activates the pull-up on PH[y] when APC bit is set in PWR_CR3 register. If the corresponding PDy bit is also set, the pull-up is not activated and the pull-down is activated instead with highest priority..

PWR_PDCRF

Power Port F pull-down control register

Offset: 0x4c, size: 32, reset: 0x00000000, access: Unspecified

0/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PD3
rw
PD2
rw
PD1
rw
PD0
rw
Toggle fields

PD0

Bit 0: Port F pull-down bit y When set, this bit activates the pull-down on PH[y] when APC bit is set in PWR_CR3 register..

PD1

Bit 1: Port F pull-down bit y When set, this bit activates the pull-down on PH[y] when APC bit is set in PWR_CR3 register..

PD2

Bit 2: Port F pull-down bit y When set, this bit activates the pull-down on PH[y] when APC bit is set in PWR_CR3 register..

PD3

Bit 3: Port F pull-down bit y When set, this bit activates the pull-down on PH[y] when APC bit is set in PWR_CR3 register..

RCC

0x40021000: RCC address block description

30/227 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 RCC_CR
0x4 RCC_ICSCR
0x8 RCC_CFGR
0xc RCC_PLLCFGR
0x18 RCC_CIER
0x1c RCC_CIFR
0x20 RCC_CICR
0x28 RCC_AHBRSTR
0x2c RCC_IOPRSTR
0x38 RCC_APBRSTR1
0x40 RCC_APBRSTR2
0x48 RCC_AHBENR
0x4c RCC_IOPENR
0x50 RCC_DBGCFGR
0x58 RCC_APBENR1
0x60 RCC_APBENR2
0x68 RCC_AHBSMENR
0x6c RCC_IOPSMENR
0x78 RCC_APBSMENR1
0x80 RCC_APBSMENR2
0x88 RCC_CCIPR
0x90 RCC_BDCR
0x94 RCC_CSR
0x98 RCC_CRRCR
Toggle registers

RCC_CR

Clock control register

Offset: 0x0, size: 32, reset: 0x00000083, access: Unspecified

5/15 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PLLRDY
r
PLLON
rw
CSSON
rw
HSEBYP
rw
HSERDY
r
HSEON
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
HSIASFS
r
HSIRDY
r
HSIKERON
rw
HSION
rw
MSIRANGE
rw
MSIRGSEL
rw
MSIPLLEN
rw
MSIRDY
r
MSION
rw
Toggle fields

MSION

Bit 0: MSI clock enable This bit is set and cleared by software. Cleared by hardware to stop the MSI oscillator when entering Stop, Standby or Shutdown mode. Set by hardware to force the MSI oscillator ON when exiting Standby or Shutdown mode. Set by hardware to force the MSI oscillator ON when STOPWUCK=0 when exiting from Stop modes, or in case of a failure of the HSE oscillator Set by hardware when used directly or indirectly as system clock..

MSIRDY

Bit 1: MSI clock ready flag This bit is set by hardware to indicate that the MSI oscillator is stable. Note: Once the MSION bit is cleared, MSIRDY goes low after 6 MSI clock cycles..

MSIPLLEN

Bit 2: MSI clock PLL enable Set and cleared by software to enable/ disable the PLL part of the MSI clock source. MSIPLLEN must be enabled after LSE is enabled (LSEON enabled) and ready (LSERDY set by hardware).There is a hardware protection to avoid enabling MSIPLLEN if LSE is not ready. This bit is cleared by hardware when LSE is disabled (LSEON = 0) or when the Clock Security System on LSE detects a LSE failure (refer to RCC_CSR register)..

MSIRGSEL

Bit 3: MSI clock range selection Set by software to select the MSI clock range with MSIRANGE[3:0]. Write 0 has no effect. After a standby or a reset MSIRGSEL is at 0 and the MSI range value is provided by MSISRANGE in CSR register..

MSIRANGE

Bits 4-7: MSI clock ranges These bits are configured by software to choose the frequency range of MSI when MSIRGSEL is set.12 frequency ranges are available: others: not allowed (hardware write protection) Note: Warning: MSIRANGE can be modified when MSI is OFF (MSION=0) or when MSI is ready (MSIRDY=1). MSIRANGE must NOT be modified when MSI is ON and NOT ready (MSION=1 and MSIRDY=0).

HSION

Bit 8: HSI16 clock enable Set and cleared by software. Cleared by hardware to stop the HSI16 oscillator when entering Stop, Standby, or Shutdown mode. Forced by hardware to keep the HSI16 oscillator ON when it is used directly or indirectly as system clock (also when leaving Stop, Standby, or Shutdown modes, or in case of failure of the HSE oscillator used for system clock)..

HSIKERON

Bit 9: HSI16 always enable for peripheral kernels. Set and cleared by software to force HSI16 ON even in Stop modes. The HSI16 can only feed USART1, USART2, CEC and I2C1 peripherals configured with HSI16 as kernel clock. Keeping the HSI16 ON in Stop mode allows avoiding to slow down the communication speed because of the HSI16 startup time. This bit has no effect on HSION value..

HSIRDY

Bit 10: HSI16 clock ready flag Set by hardware to indicate that HSI16 oscillator is stable. This bit is set only when HSI16 is enabled by software by setting HSION. Note: Once the HSION bit is cleared, HSIRDY goes low after 6 HSI16 clock cycles..

HSIASFS

Bit 11: HSI16 automatic start from Stop Set and cleared by software. When the system wake-up clock is MSI, this bit is used to wake up the HSI16 is parallel of the system wake-up..

HSEON

Bit 16: HSE clock enable Set and cleared by software. Cleared by hardware to stop the HSE oscillator when entering Stop, Standby, or Shutdown mode. This bit cannot be reset if the HSE oscillator is used directly or indirectly as the system clock..

HSERDY

Bit 17: HSE clock ready flag Set by hardware to indicate that the HSE oscillator is stable. Note: Once the HSEON bit is cleared, HSERDY goes low after 6 HSE clock cycles..

HSEBYP

Bit 18: HSE crystal oscillator bypass Set and cleared by software to bypass the oscillator with an external clock. The external clock must be enabled with the HSEON bit set, to be used by the device. The HSEBYP bit can be written only if the HSE oscillator is disabled..

CSSON

Bit 19: Clock security system enable Set by software to enable the clock security system. When CSSON is set, the clock detector is enabled by hardware when the HSE oscillator is ready, and disabled by hardware if a HSE clock failure is detected. This bit is set only and is cleared by reset..

PLLON

Bit 24: PLL enable Set and cleared by software to enable the PLL. Cleared by hardware when entering Stop, Standby or Shutdown mode. This bit cannot be reset if the PLL clock is used as the system clock..

PLLRDY

Bit 25: PLL clock ready flag Set by hardware to indicate that the PLL is locked..

RCC_ICSCR

Internal clock sources calibration register

Offset: 0x4, size: 32, reset: 0x40004000, access: Unspecified

2/4 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
HSITRIM
rw
HSICAL
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MSITRIM
rw
MSICAL
r
Toggle fields

MSICAL

Bits 0-7: MSI clock calibration These bits are initialized at startup with the factory-programmed MSI calibration trim value. When MSITRIM is written, MSICAL is updated with the sum of MSITRIM and the factory trim value..

MSITRIM

Bits 8-15: MSI clock trimming These bits provide an additional user-programmable trimming value that is added to the MSICAL[7:0] bits. It can be programmed to adjust to variations in voltage and temperature that influence the frequency of the MSI..

HSICAL

Bits 16-23: HSI16 clock calibration These bits are initialized at startup with the factory-programmed HSI16 calibration trim value. When HSITRIM is written, HSICAL is updated with the sum of HSITRIM and the factory trim value..

HSITRIM

Bits 24-30: HSI16 clock trimming These bits provide an additional user-programmable trimming value that is added to the HSICAL[7:0] bits. It can be programmed to adjust to variations in voltage and temperature that influence the frequency of the HSI16. The default value is 64 when added to the HSICAL value, trim the HSI16 to 161MHz 1 11%..

RCC_CFGR

Clock configuration register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

1/9 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MCOPRE
rw
MCOSEL
rw
MCO2PRE
rw
MCO2SEL
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
STOPWUCK
rw
PPRE
rw
HPRE
rw
SWS
r
SW
rw
Toggle fields

SW

Bits 0-2: System clock switch This bitfield is controlled by software and hardware. The bitfield selects the clock for SYSCLK as follows: Others: Reserved The setting is forced by hardware to 000 (HSISYS selected) when the MCU exits Stop, Standby, or Shutdown mode, or when the setting is 001 (HSE selected) and HSE oscillator failure is detected..

SWS

Bits 3-5: System clock switch status This bitfield is controlled by hardware to indicate the clock source used as system clock: Others: Reserved.

HPRE

Bits 8-11: AHB prescaler This bitfield is controlled by software. To produce HCLK clock, it sets the division factor of SYSCLK clock as follows: 0xxx: 1 Caution: Depending on the device voltage range, the software has to set correctly these bits to ensure that the system frequency does not exceed the maximum allowed frequency (for more details, refer to Section14.1.4: Dynamic voltage scaling management). After a write operation to these bits and before decreasing the voltage range, this register must be read to be sure that the new value has been taken into account..

PPRE

Bits 12-14: APB prescaler This bitfield is controlled by software. To produce PCLK clock, it sets the division factor of HCLK clock as follows: 0xx: 1.

STOPWUCK

Bit 15: Wake-up from Stop and CSS backup clock selection Set and cleared by software to select the system clock used when exiting Stop mode. The selected clock is also used as emergency clock for the Clock Security System on HSE. Warning: STOPWUCK must not be modified when the Clock Security System is enabled by HSECSSON in RCC_CR register and the system clock is HSE (SWS=10) or a switch on HSE is requested (SW=10)..

MCO2SEL

Bits 16-19: Microcontroller clock output 2 clock selector This bitfield is controlled by software. It sets the clock selector for MCO2 output as follows: Others: Reserved Note: This clock output may have some truncated cycles at startup or during MCO2 clock source switching..

MCO2PRE

Bits 20-23: Microcontroller clock output 2 prescaler This bitfield is controlled by software. It sets the division factor of the clock sent to the MCO2 output as follows: ... Others: reserved It is highly recommended to set this field before the MCO2 output is enabled..

MCOSEL

Bits 24-27: Microcontroller clock output clock selector This bitfield is controlled by software. It sets the clock selector for MCO output as follows: Others: Reserved Note: This clock output may have some truncated cycles at startup or during MCO clock source switching..

MCOPRE

Bits 28-31: Microcontroller clock output prescaler This bitfield is controlled by software. It sets the division factor of the clock sent to the MCO output as follows: ... Others: reserved It is highly recommended to set this field before the MCO output is enabled..

RCC_PLLCFGR

PLL configuration register

Offset: 0xc, size: 32, reset: 0x00001000, access: Unspecified

0/9 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PLLR
rw
PLLREN
rw
PLLQ
rw
PLLQEN
rw
PLLP
rw
PLLPEN
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PLLN
rw
PLLM
rw
PLLSRC
rw
Toggle fields

PLLSRC

Bits 0-1: PLL input clock source This bit is controlled by software to select PLL clock source, as follows: The bitfield can be written only when the PLL is disabled. When the PLL is not used, selecting 00 allows saving power..

PLLM

Bits 4-6: Division factor M of the PLL input clock divider This bit is controlled by software to divide the PLL input clock before the actual phase-locked loop, as follows: The bitfield can be written only when the PLL is disabled. Caution: The software must set these bits so that the PLL input frequency after the /M divider is between 2.66 and 161MHz..

PLLN

Bits 8-14: PLL frequency multiplication factor N This bit is controlled by software to set the division factor of the f<sub>VCO</sub> feedback divider (that determines the PLL multiplication ratio) as follows: ... ... The bitfield can be written only when the PLL is disabled. Caution: The software must set these bits so that the VCO output frequency is between 96 and 3441MHz..

PLLPEN

Bit 16: PLLPCLK clock output enable This bit is controlled by software to enable/disable the PLLPCLK clock output of the PLL: Disabling the PLLPCLK clock output, when not used, allows saving power..

PLLP

Bits 17-21: PLL VCO division factor P for PLLPCLK clock output This bitfield is controlled by software. It sets the PLL VCO division factor P as follows: ... The bitfield can be written only when the PLL is disabled. Caution: The software must set this bitfield so as not to exceed 541MHz on this clock..

PLLQEN

Bit 24: PLLQCLK clock output enable This bit is controlled by software to enable/disable the PLLQCLK clock output of the PLL: Disabling the PLLQCLK clock output, when not used, allows saving power..

PLLQ

Bits 25-27: PLL VCO division factor Q for PLLQCLK clock output This bitfield is controlled by software. It sets the PLL VCO division factor Q as follows: The bitfield can be written only when the PLL is disabled. Caution: The software must set this bitfield so as not to exceed 541MHz on this clock..

PLLREN

Bit 28: PLLRCLK clock output enable This bit is controlled by software to enable/disable the PLLRCLK clock output of the PLL: This bit cannot be written when PLLRCLK output of the PLL is selected for system clock. Disabling the PLLRCLK clock output, when not used, allows saving power..

PLLR

Bits 29-31: PLL VCO division factor R for PLLRCLK clock output This bitfield is controlled by software. It sets the PLL VCO division factor R as follows: The bitfield can be written only when the PLL is disabled. The PLLRCLK clock can be selected as system clock. Caution: The software must set this bitfield so as not to exceed 122MHz on this clock..

RCC_CIER

Clock interrupt enable register

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/8 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
HSI48RDYIE
rw
LSECSSIE
rw
PLLRDYIE
rw
HSERDYIE
rw
HSIRDYIE
rw
MSIRDYIE
rw
LSERDYIE
rw
LSIRDYIE
rw
Toggle fields

LSIRDYIE

Bit 0: LSI ready interrupt enable Set and cleared by software to enable/disable interrupt caused by the LSI oscillator stabilization:.

LSERDYIE

Bit 1: LSE ready interrupt enable Set and cleared by software to enable/disable interrupt caused by the LSE oscillator stabilization:.

MSIRDYIE

Bit 2: MSI ready interrupt enable Set and cleared by software to enable/disable interrupt caused by the MSI oscillator stabilization..

HSIRDYIE

Bit 3: HSI16 ready interrupt enable Set and cleared by software to enable/disable interrupt caused by the HSI16 oscillator stabilization:.

HSERDYIE

Bit 4: HSE ready interrupt enable Set and cleared by software to enable/disable interrupt caused by the HSE oscillator stabilization:.

PLLRDYIE

Bit 5: PLL ready interrupt enable Set and cleared by software to enable/disable interrupt caused by PLL lock:.

LSECSSIE

Bit 9: LSE clock security system interrupt enable Set and cleared by software to enable/disable interrupt caused by the clock security system on LSE..

HSI48RDYIE

Bit 10: HSI48 ready interrupt enable Set and cleared by software to enable/disable interrupt caused by the internal HSI48 oscillator..

RCC_CIFR

Clock interrupt flag register

Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified

9/9 fields covered.

Toggle fields

LSIRDYF

Bit 0: LSI ready interrupt flag Set by hardware when the LSI clock becomes stable and LSIRDYDIE is set. Cleared by software setting the LSIRDYC bit..

LSERDYF

Bit 1: LSE ready interrupt flag Set by hardware when the LSE clock becomes stable and LSERDYDIE is set. Cleared by software setting the LSERDYC bit..

MSIRDYF

Bit 2: MSI ready interrupt flag Set by hardware when the MSI clock becomes stable and MSIRDYDIE is set. Cleared by software setting the MSIRDYC bit..

HSIRDYF

Bit 3: HSI16 ready interrupt flag Set by hardware when the HSI16 clock becomes stable and HSIRDYIE is set in a response to setting the HSION (refer to Clock control register (RCC_CR)). When HSION is not set but the HSI16 oscillator is enabled by the peripheral through a clock request, this bit is not set and no interrupt is generated. Cleared by software setting the HSIRDYC bit..

HSERDYF

Bit 4: HSE ready interrupt flag Set by hardware when the HSE clock becomes stable and HSERDYIE is set. Cleared by software setting the HSERDYC bit..

PLLRDYF

Bit 5: PLL ready interrupt flag Set by hardware when the PLL locks and PLLRDYIE is set. Cleared by software setting the PLLRDYC bit..

CSSF

Bit 8: HSE clock security system interrupt flag Set by hardware when a failure is detected in the HSE oscillator. Cleared by software setting the CSSC bit..

LSECSSF

Bit 9: LSE clock security system interrupt flag Set by hardware when a failure is detected in the LSE oscillator. Cleared by software by setting the LSECSSC bit..

HSI48RDYF

Bit 10: HSI48 ready interrupt flag Set by hardware when the HSI48 clock becomes stable and HSI48RDYIE is set in a response to setting the HSI48ON (refer to RCC clock recovery RC register (RCC_CRRCR)). Cleared by software setting the HSI48RDYC bit..

RCC_CICR

Clock interrupt clear register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/9 fields covered.

Toggle fields

LSIRDYC

Bit 0: LSI ready interrupt clear This bit is set by software to clear the LSIRDYF flag..

LSERDYC

Bit 1: LSE ready interrupt clear This bit is set by software to clear the LSERDYF flag..

MSIRDYC

Bit 2: MSI ready interrupt clear This bit is set by software to clear the MSIRDYF flag..

HSIRDYC

Bit 3: HSI16 ready interrupt clear This bit is set software to clear the HSIRDYF flag..

HSERDYC

Bit 4: HSE ready interrupt clear This bit is set by software to clear the HSERDYF flag..

PLLRDYC

Bit 5: PLL ready interrupt clear This bit is set by software to clear the PLLRDYF flag..

CSSC

Bit 8: Clock security system interrupt clear This bit is set by software to clear the HSECSSF flag..

LSECSSC

Bit 9: LSE Clock security system interrupt clear This bit is set by software to clear the LSECSSF flag..

HSI48RDYC

Bit 10: HSI48 oscillator ready interrupt clear This bit is set by software to clear the HSI48RDYF flag..

RCC_AHBRSTR

AHB peripheral reset register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/6 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TSCRST
rw
RNGRST
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CRCRST
rw
FLASHRST
rw
DMA2RST
rw
DMA1RST
rw
Toggle fields

DMA1RST

Bit 0: DMA1 and DMAMUX reset Set and cleared by software..

DMA2RST

Bit 1: DMA2 and DMAMUX reset Set and cleared by software..

FLASHRST

Bit 8: Flash memory interface reset Set and cleared by software. This bit can only be set when the flash memory is in power down mode..

CRCRST

Bit 12: CRC reset Set and cleared by software..

RNGRST

Bit 18: Random number generator reset Set and cleared by software..

TSCRST

Bit 24: Touch sensing controller reset Set and cleared by software..

RCC_IOPRSTR

I/O port reset register

Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
GPIOFRST
rw
GPIOERST
rw
GPIODRST
rw
GPIOCRST
rw
GPIOBRST
rw
GPIOARST
rw
Toggle fields

GPIOARST

Bit 0: I/O port A reset This bit is set and cleared by software..

GPIOBRST

Bit 1: I/O port B reset This bit is set and cleared by software..

GPIOCRST

Bit 2: I/O port C reset This bit is set and cleared by software..

GPIODRST

Bit 3: I/O port D reset This bit is set and cleared by software..

GPIOERST

Bit 4: I/O port E reset This bit is set and cleared by software..

GPIOFRST

Bit 5: I/O port F reset This bit is set and cleared by software..

RCC_APBRSTR1

APB peripheral reset register 1

Offset: 0x38, size: 32, reset: 0x00000000, access: Unspecified

0/20 fields covered.

Toggle fields

TIM2RST

Bit 0: TIM2 timer reset Set and cleared by software..

TIM3RST

Bit 1: TIM3 timer reset Set and cleared by software..

TIM6RST

Bit 4: TIM6 timer reset Set and cleared by software..

TIM7RST

Bit 5: TIM7 timer reset Set and cleared by software..

LPUART2RST

Bit 7: LPUART2 reset Set and cleared by software..

LCDRST

Bit 9: LCD reset<sup>(1)</sup> Set and cleared by software..

USBRST

Bit 13: USB reset<sup>(1)</sup> Set and cleared by software..

SPI2RST

Bit 14: SPI2 reset Set and cleared by software..

USART2RST

Bit 17: USART2 reset Set and cleared by software..

USART3RST

Bit 18: USART3 reset Set and cleared by software..

USART4RST

Bit 19: USART4 reset Set and cleared by software..

LPUART1RST

Bit 20: LPUART1 reset Set and cleared by software..

I2C1RST

Bit 21: I2C1 reset Set and cleared by software..

I2C2RST

Bit 22: I2C2 reset Set and cleared by software..

I2C3RST

Bit 23: I2C3 reset Set and cleared by software..

OPAMPRST

Bit 24: OPAMP reset Set and cleared by software..

PWRRST

Bit 28: Power interface reset Set and cleared by software..

DAC1RST

Bit 29: DAC1 interface reset Set and cleared by software..

LPTIM2RST

Bit 30: Low Power Timer 2 reset Set and cleared by software..

LPTIM1RST

Bit 31: Low Power Timer 1 reset Set and cleared by software..

RCC_APBRSTR2

APB peripheral reset register 2

Offset: 0x40, size: 32, reset: 0x00000000, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ADCRST
rw
TIM16RST
rw
TIM15RST
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
USART1RST
rw
SPI1RST
rw
TIM1RST
rw
SYSCFGRST
rw
Toggle fields

SYSCFGRST

Bit 0: SYSCFG, COMP and VREFBUF reset Set and cleared by software..

TIM1RST

Bit 11: TIM1 timer reset Set and cleared by software..

SPI1RST

Bit 12: SPI1 reset Set and cleared by software..

USART1RST

Bit 14: USART1 reset Set and cleared by software..

TIM15RST

Bit 16: TIM15 timer reset Set and cleared by software..

TIM16RST

Bit 17: TIM16 timer reset Set and cleared by software..

ADCRST

Bit 20: ADC reset Set and cleared by software..

RCC_AHBENR

AHB peripheral clock enable register

Offset: 0x48, size: 32, reset: 0x00000100, access: Unspecified

0/6 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TSCEN
rw
RNGEN
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CRCEN
rw
FLASHEN
rw
DMA2EN
rw
DMA1EN
rw
Toggle fields

DMA1EN

Bit 0: DMA1 and DMAMUX clock enable Set and cleared by software. DMAMUX is enabled as long as at least one DMA peripheral is enabled..

DMA2EN

Bit 1: DMA2 and DMAMUX clock enable Set and cleared by software. DMAMUX is enabled as long as at least one DMA peripheral is enabled..

FLASHEN

Bit 8: Flash memory interface clock enable Set and cleared by software. This bit can only be cleared when the flash memory is in power down mode..

CRCEN

Bit 12: CRC clock enable Set and cleared by software..

RNGEN

Bit 18: Random number generator clock enable Set and cleared by software..

TSCEN

Bit 24: Touch sensing controller clock enable Set and cleared by software..

RCC_IOPENR

I/O port clock enable register

Offset: 0x4c, size: 32, reset: 0x00000000, access: Unspecified

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
GPIOFEN
rw
GPIOEEN
rw
GPIODEN
rw
GPIOCEN
rw
GPIOBEN
rw
GPIOAEN
rw
Toggle fields

GPIOAEN

Bit 0: I/O port A clock enable This bit is set and cleared by software..

GPIOBEN

Bit 1: I/O port B clock enable This bit is set and cleared by software..

GPIOCEN

Bit 2: I/O port C clock enable This bit is set and cleared by software..

GPIODEN

Bit 3: I/O port D clock enable This bit is set and cleared by software..

GPIOEEN

Bit 4: I/O port E clock enable<sup>(1)</sup> This bit is set and cleared by software..

GPIOFEN

Bit 5: I/O port F clock enable This bit is set and cleared by software..

RCC_DBGCFGR

Debug configuration register

Offset: 0x50, size: 32, reset: 0x00000000, access: Unspecified

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DBGRST
rw
DBGEN
rw
Toggle fields

DBGEN

Bit 0: Debug support clock enable Set and cleared by software..

DBGRST

Bit 1: Debug support reset Set and cleared by software..

RCC_APBENR1

APB peripheral clock enable register 1

Offset: 0x58, size: 32, reset: 0x00000000, access: Unspecified

0/22 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
LPTIM1EN
rw
LPTIM2EN
rw
DAC1EN
rw
PWREN
rw
OPAMPEN
rw
I2C3EN
rw
I2C2EN
rw
I2C1EN
rw
LPUART1EN
rw
USART4EN
rw
USART3EN
rw
USART2EN
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SPI2EN
rw
USBEN
rw
WWDGEN
rw
RTCAPBEN
rw
LCDEN
rw
LPUART2EN
rw
TIM7EN
rw
TIM6EN
rw
TIM3EN
rw
TIM2EN
rw
Toggle fields

TIM2EN

Bit 0: TIM2 timer clock enable Set and cleared by software..

TIM3EN

Bit 1: TIM3 timer clock enable Set and cleared by software..

TIM6EN

Bit 4: TIM6 timer clock enable Set and cleared by software..

TIM7EN

Bit 5: TIM7 timer clock enable Set and cleared by software..

LPUART2EN

Bit 7: LPUART2 clock enable Set and cleared by software..

LCDEN

Bit 9: LCD clock enable<sup>(1)</sup> Set and cleared by software..

RTCAPBEN

Bit 10: RTC APB clock enable Set and cleared by software..

WWDGEN

Bit 11: WWDG clock enable Set by software to enable the window watchdog clock. Cleared by hardware system reset This bit can also be set by hardware if the WWDG_SW option bit is 0..

USBEN

Bit 13: USB clock enable<sup>(1)</sup> Set and cleared by software..

SPI2EN

Bit 14: SPI2 clock enable Set and cleared by software..

USART2EN

Bit 17: USART2 clock enable Set and cleared by software..

USART3EN

Bit 18: USART3 clock enable Set and cleared by software..

USART4EN

Bit 19: USART4 clock enable Set and cleared by software..

LPUART1EN

Bit 20: LPUART1 clock enable Set and cleared by software..

I2C1EN

Bit 21: I2C1 clock enable Set and cleared by software..

I2C2EN

Bit 22: I2C2 clock enable Set and cleared by software..

I2C3EN

Bit 23: I2C3 clock enable Set and cleared by software..

OPAMPEN

Bit 24: OPAMP clock enable Set and cleared by software..

PWREN

Bit 28: Power interface clock enable Set and cleared by software..

DAC1EN

Bit 29: DAC1 interface clock enable Set and cleared by software..

LPTIM2EN

Bit 30: LPTIM2 clock enable Set and cleared by software..

LPTIM1EN

Bit 31: LPTIM1 clock enable Set and cleared by software..

RCC_APBENR2

APB peripheral clock enable register 2

Offset: 0x60, size: 32, reset: 0x00000000, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ADCEN
rw
TIM16EN
rw
TIM15EN
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
USART1EN
rw
SPI1EN
rw
TIM1EN
rw
SYSCFGEN
rw
Toggle fields

SYSCFGEN

Bit 0: SYSCFG, COMP and VREFBUF clock enable Set and cleared by software..

TIM1EN

Bit 11: TIM1 timer clock enable Set and cleared by software..

SPI1EN

Bit 12: SPI1 clock enable Set and cleared by software..

USART1EN

Bit 14: USART1 clock enable Set and cleared by software..

TIM15EN

Bit 16: TIM15 timer clock enable Set and cleared by software..

TIM16EN

Bit 17: TIM16 timer clock enable Set and cleared by software..

ADCEN

Bit 20: ADC clock enable Set and cleared by software..

RCC_AHBSMENR

AHB peripheral clock enable in Sleep/Stop mode register

Offset: 0x68, size: 32, reset: 0x01051303, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TSCSMEN
rw
RNGSMEN
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CRCSMEN
rw
SRAMSMEN
rw
FLASHSMEN
rw
DMA2SMEN
rw
DMA1SMEN
rw
Toggle fields

DMA1SMEN

Bit 0: DMA1 and DMAMUX clock enable during Sleep mode Set and cleared by software. Clock to DMAMUX during Sleep mode is enabled as long as the clock in Sleep mode is enabled to at least one DMA peripheral..

DMA2SMEN

Bit 1: DMA2 and DMAMUX clock enable during Sleep mode Set and cleared by software. Clock to DMAMUX during Sleep mode is enabled as long as the clock in Sleep mode is enabled to at least one DMA peripheral..

FLASHSMEN

Bit 8: Flash memory interface clock enable during Sleep mode Set and cleared by software. This bit can be activated only when the flash memory is in power down mode..

SRAMSMEN

Bit 9: SRAM clock enable during Sleep mode Set and cleared by software..

CRCSMEN

Bit 12: CRC clock enable during Sleep mode Set and cleared by software..

RNGSMEN

Bit 18: RNG clock enable during Sleep and Stop mode Set and cleared by software..

TSCSMEN

Bit 24: TSC clock enable during Sleep and Stop mode Set and cleared by software..

RCC_IOPSMENR

I/O port in Sleep mode clock enable register

Offset: 0x6c, size: 32, reset: 0x0000003F, access: Unspecified

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
GPIOFSMEN
rw
GPIOESMEN
rw
GPIODSMEN
rw
GPIOCSMEN
rw
GPIOBSMEN
rw
GPIOASMEN
rw
Toggle fields

GPIOASMEN

Bit 0: I/O port A clock enable during Sleep mode Set and cleared by software..

GPIOBSMEN

Bit 1: I/O port B clock enable during Sleep mode Set and cleared by software..

GPIOCSMEN

Bit 2: I/O port C clock enable during Sleep mode Set and cleared by software..

GPIODSMEN

Bit 3: I/O port D clock enable during Sleep mode<sup>(1)</sup> Set and cleared by software..

GPIOESMEN

Bit 4: I/O port E clock enable during Sleep mode Set and cleared by software..

GPIOFSMEN

Bit 5: I/O port F clock enable during Sleep mode Set and cleared by software..

RCC_APBSMENR1

APB peripheral clock enable in Sleep/Stop mode register 1

Offset: 0x78, size: 32, reset: 0xFF7E4C33, access: Unspecified

0/22 fields covered.

Toggle fields

TIM2SMEN

Bit 0: TIM2 timer clock enable during Sleep mode Set and cleared by software..

TIM3SMEN

Bit 1: TIM3 timer clock enable during Sleep mode Set and cleared by software..

TIM6SMEN

Bit 4: TIM6 timer clock enable during Sleep mode Set and cleared by software..

TIM7SMEN

Bit 5: TIM7 timer clock enable during Sleep mode Set and cleared by software..

LPUART2SMEN

Bit 7: LPUART2 clock enable during Sleep and Stop modes Set and cleared by software..

LCDSMEN

Bit 9: LCD clock enable during Sleep mode<sup>(1)</sup> Set and cleared by software..

RTCAPBSMEN

Bit 10: RTC APB clock enable during Sleep mode Set and cleared by software..

WWDGSMEN

Bit 11: WWDG clock enable during Sleep and Stop modes Set and cleared by software..

USBSMEN

Bit 13: USB clock enable during Sleep mode<sup>(1)</sup> Set and cleared by software..

SPI2SMEN

Bit 14: SPI2 clock enable during Sleep mode Set and cleared by software..

USART2SMEN

Bit 17: USART2 clock enable during Sleep and Stop modes Set and cleared by software..

USART3SMEN

Bit 18: USART3 clock enable during Sleep mode Set and cleared by software..

USART4SMEN

Bit 19: USART4 clock enable during Sleep mode Set and cleared by software..

LPUART1SMEN

Bit 20: LPUART1 clock enable during Sleep and Stop modes Set and cleared by software..

I2C1SMEN

Bit 21: I2C1 clock enable during Sleep and Stop modes Set and cleared by software..

I2C2SMEN

Bit 22: I2C2 clock enable during Sleep mode Set and cleared by software..

I2C3SMEN

Bit 23: I2C3 clock enable during Sleep mode Set and cleared by software..

OPAMPSMEN

Bit 24: OPAMP clock enable during Sleep and Stop modes Set and cleared by software..

PWRSMEN

Bit 28: Power interface clock enable during Sleep mode Set and cleared by software..

DAC1SMEN

Bit 29: DAC1 interface clock enable during Sleep and Stop modes Set and cleared by software..

LPTIM2SMEN

Bit 30: Low Power Timer 2 clock enable during Sleep and Stop modes Set and cleared by software..

LPTIM1SMEN

Bit 31: Low Power Timer 1 clock enable during Sleep and Stop modes Set and cleared by software..

RCC_APBSMENR2

APB peripheral clock enable in Sleep/Stop mode register 2

Offset: 0x80, size: 32, reset: 0x0017D801, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ADCSMEN
rw
TIM16SMEN
rw
TIM15SMEN
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
USART1SMEN
rw
SPI1SMEN
rw
TIM1SMEN
rw
SYSCFGSMEN
rw
Toggle fields

SYSCFGSMEN

Bit 0: SYSCFG, COMP and VREFBUF clock enable during Sleep and Stop modes Set and cleared by software..

TIM1SMEN

Bit 11: TIM1 timer clock enable during Sleep mode Set and cleared by software..

SPI1SMEN

Bit 12: SPI1 clock enable during Sleep mode Set and cleared by software..

USART1SMEN

Bit 14: USART1 clock enable during Sleep and Stop modes Set and cleared by software..

TIM15SMEN

Bit 16: TIM15 timer clock enable during Sleep mode Set and cleared by software..

TIM16SMEN

Bit 17: TIM16 timer clock enable during Sleep mode Set and cleared by software..

ADCSMEN

Bit 20: ADC clock enable during Sleep mode Set and cleared by software..

RCC_CCIPR

Peripherals independent clock configuration register

Offset: 0x88, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ADCSEL
rw
CLK48SEL
rw
TIM15SEL
rw
TIM1SEL
rw
LPTIM2SEL
rw
LPTIM1SEL
rw
I2C3SEL
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
I2C1SEL
rw
LPUART1SEL
rw
LPUART2SEL
rw
USART2SEL
rw
USART1SEL
rw
Toggle fields

USART1SEL

Bits 0-1: USART1 clock source selection This bitfield is controlled by software to select USART1 clock source as follows:.

USART2SEL

Bits 2-3: USART2 clock source selection This bitfield is controlled by software to select USART2 clock source as follows:.

LPUART2SEL

Bits 8-9: LPUART2 clock source selection This bitfield is controlled by software to select LPUART2 clock source as follows:.

LPUART1SEL

Bits 10-11: LPUART1 clock source selection This bitfield is controlled by software to select LPUART1 clock source as follows:.

I2C1SEL

Bits 12-13: I2C1 clock source selection This bitfield is controlled by software to select I2C1 clock source as follows:.

I2C3SEL

Bits 16-17: I2C3 clock source selection This bitfield is controlled by software to select I2C3 clock source as follows:.

LPTIM1SEL

Bits 18-19: LPTIM1 clock source selection This bitfield is controlled by software to select LPTIM1 clock source as follows:.

LPTIM2SEL

Bits 20-21: LPTIM2 clock source selection This bitfield is controlled by software to select LPTIM2 clock source as follows:.

TIM1SEL

Bit 24: TIM1 clock source selection This bit is set and cleared by software. It selects TIM1 clock source as follows:.

TIM15SEL

Bit 25: TIM15 clock source selection This bit is set and cleared by software. It selects TIM15 clock source as follows:.

CLK48SEL

Bits 26-27: 481MHz clock source selection This bitfield is controlled by software to select the 481MHz clock source used by the USB FS and the RNG:.

ADCSEL

Bits 28-29: ADCs clock source selection This bitfield is controlled by software to select the clock source for ADC:.

RCC_BDCR

RTC domain control register

Offset: 0x90, size: 32, reset: 0x00000000, access: Unspecified

3/13 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
LSCOSEL
rw
LSCOEN
rw
BDRST
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RTCEN
rw
LSESYSRDY
r
RTCSEL
rw
LSESYSEN
rw
LSECSSD
r
LSECSSON
rw
LSEDRV
rw
LSEBYP
rw
LSERDY
r
LSEON
rw
Toggle fields

LSEON

Bit 0: LSE oscillator enable Set and cleared by software to enable LSE oscillator:.

LSERDY

Bit 1: LSE oscillator ready Set and cleared by hardware to indicate when the external 321kHz oscillator is ready (stable): After the LSEON bit is cleared, LSERDY goes low after 6 external low-speed oscillator clock cycles..

LSEBYP

Bit 2: LSE oscillator bypass Set and cleared by software to bypass the LSE oscillator (in debug mode). This bit can be written only when the external 321kHz oscillator is disabled (LSEON=0 and LSERDY=0)..

LSEDRV

Bits 3-4: LSE oscillator drive capability Set by software to select the LSE oscillator drive capability as follows: Applicable when the LSE oscillator is in Xtal mode, as opposed to bypass mode..

LSECSSON

Bit 5: CSS on LSE enable Set by software to enable the clock security system on LSE (321kHz) oscillator as follows: LSECSSON must be enabled after the LSE oscillator is enabled (LSEON bit enabled) and ready (LSERDY flag set by hardware), and after the RTCSEL bit is selected. Once enabled, this bit cannot be disabled, except after a LSE failure detection (LSECSSD =1). In that case the software must disable the LSECSSON bit..

LSECSSD

Bit 6: CSS on LSE failure Detection Set by hardware to indicate when a failure is detected by the clock security system on the external 321kHz oscillator (LSE):.

LSESYSEN

Bit 7: LSE clock enable for system usage This bit must be set by software to enable the LSE clock for a system usage..

RTCSEL

Bits 8-9: RTC clock source selection Set by software to select the clock source for the RTC as follows: Once the RTC clock source is selected, it cannot be changed anymore unless the RTC domain is reset, or unless a failure is detected on LSE (LSECSSD is set). The BDRST bit can be used to reset this bitfield to 00..

LSESYSRDY

Bit 11: LSE clock ready for system usage This flag is set by hardware to indicate that the LSE clock is ready for being used by the system (see LSESYSEN bit). This flag is set when LSE clock is ready (LSEON1=11 and LSERDY1=11) and two LSE clock cycles after that LSESYSEN is set. Cleared by hardware to indicate that the LSE clock is not ready to be used by the system..

RTCEN

Bit 15: RTC clock enable Set and cleared by software. The bit enables clock to RTC and TAMP..

BDRST

Bit 16: RTC domain software reset Set and cleared by software to reset the RTC domain:.

LSCOEN

Bit 24: Low-speed clock output (LSCO) enable Set and cleared by software..

LSCOSEL

Bit 25: Low-speed clock output selection Set and cleared by software to select the low-speed output clock:.

RCC_CSR

Control/status register

Offset: 0x94, size: 32, reset: 0x00000000, access: Unspecified

8/12 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
LPWRRSTF
r
WWDGRSTF
r
IWDGRSTF
r
SFTRSTF
r
PWRRSTF
r
PINRSTF
r
OBLRSTF
r
RMVF
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MSISRANGE
rw
LSIPREDIV
rw
LSIRDY
r
LSION
rw
Toggle fields

LSION

Bit 0: LSI oscillator enable Set and cleared by software to enable/disable the LSI oscillator:.

LSIRDY

Bit 1: LSI oscillator ready Set and cleared by hardware to indicate when the LSI oscillator is ready (stable): After the LSION bit is cleared, LSIRDY goes low after 3 LSI oscillator clock cycles. This bit can be set even if LSION = 0 if the LSI is requested by the Clock Security System on LSE, by the Independent Watchdog or by the RTC..

LSIPREDIV

Bit 2: Internal low-speed oscillator pre-divided by 128 Set and reset by hardware to indicate when the low-speed internal RC oscillator has to be divided by 128. The software has to switch off the LSI before changing this bit..

MSISRANGE

Bits 8-11: MSI range after Standby mode Set by software to chose the MSI frequency at startup. This range is used after exiting Standby mode until MSIRGSEL is set. After a pad or a power-on reset, the range is always 41MHz. MSISRANGE[3:0] can be written only when MSIRGSEL1=11. Others: Reserved Note: Changing the MSISRANGE[3:0] does not change the current MSI frequency..

RMVF

Bit 23: Remove reset flags Set by software to clear the reset flags..

OBLRSTF

Bit 25: Option byte loader reset flag Set by hardware when a reset from the Option byte loading occurs. Cleared by setting the RMVF bit..

PINRSTF

Bit 26: Pin reset flag Set by hardware when a reset from the NRST pin occurs. Cleared by setting the RMVF bit..

PWRRSTF

Bit 27: BOR or POR/PDR flag Set by hardware when a BOR or POR/PDR occurs. Cleared by setting the RMVF bit..

SFTRSTF

Bit 28: Software reset flag Set by hardware when a software reset occurs. Cleared by setting the RMVF bit..

IWDGRSTF

Bit 29: Independent window watchdog reset flag Set by hardware when an independent watchdog reset domain occurs. Cleared by setting the RMVF bit..

WWDGRSTF

Bit 30: Window watchdog reset flag Set by hardware when a window watchdog reset occurs. Cleared by setting the RMVF bit..

LPWRRSTF

Bit 31: Low-power reset flag Set by hardware when a reset occurs due to illegal Stop, Standby, or Shutdown mode entry. Cleared by setting the RMVF bit. This operates only if nRST_STOP, nRST_STDBY or nRST_SHDW option bits are cleared..

RCC_CRRCR

RCC clock recovery RC register

Offset: 0x98, size: 32, reset: 0x00008800, access: Unspecified

2/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
HSI48CAL
r
HSI48RDY
r
HSI48ON
rw
Toggle fields

HSI48ON

Bit 0: HSI48 RC oscillator enable<sup>(1)</sup>.

HSI48RDY

Bit 1: HSI48 clock ready flag<sup>(1)</sup> The flag is set when the HSI48 clock is ready for use..

HSI48CAL

Bits 7-15: HSI48 clock calibration These bits are initialized at startup with the factory-programmed HSI48 calibration trim value..

RNG

0x40025000: RNG address block description

4/18 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 RNG_CR
0x4 RNG_SR
0x8 RNG_DR
0x10 RNG_HTCR
Toggle registers

RNG_CR

RNG control register

Offset: 0x0, size: 32, reset: 0x00800D00, access: Unspecified

0/11 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CONFIGLOCK
rw
CONDRST
rw
RNG_CONFIG1
rw
CLKDIV
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RNG_CONFIG2
rw
NISTC
rw
RNG_CONFIG3
rw
ARDIS
rw
CED
rw
IE
rw
RNGEN
rw
Toggle fields

RNGEN

Bit 2: True random number generator enable.

IE

Bit 3: Interrupt enable.

CED

Bit 5: Clock error detection The clock error detection cannot be enabled nor disabled on-the-fly when the RNG is enabled, that is to enable or disable CED, the RNG must be disabled. Writing this bit is taken into account only if the CONDRST bit is set to 1 in the same access, while CONFIGLOCK remains at 0. Writing to this bit is ignored if CONFIGLOCK1=11..

ARDIS

Bit 7: Auto reset disable When auto-reset is enabled the application still need to clear the SEIS bit after a noise source error. Writing this bit is taken into account only if CONDRST bit is set to 1 in the same access, while CONFIGLOCK remains at 0. Writing to this bit is ignored if CONFIGLOCK1=11..

RNG_CONFIG3

Bits 8-11: RNG configuration 3 Reserved to the RNG configuration (bitfield 3). Refer to RNG_CONFIG1 bitfield for details. If the NISTC bit is cleared in this register RNG_CONFIG3 bitfield values are ignored by RNG..

NISTC

Bit 12: NIST custom two conditioning loops are performed and 256 bits of noise source are used. Writing this bit is taken into account only if CONDRST bit is set to 1 in the same access, while CONFIGLOCK remains at 0. Writing to this bit is ignored if CONFIGLOCK1=11..

RNG_CONFIG2

Bits 13-15: RNG configuration 2 Reserved to the RNG configuration (bitfield 2). Bit 13 can be set when RNG power consumption is critical. See Section120.3.8: RNG low-power use. Refer to the RNG_CONFIG1 bitfield for details..

CLKDIV

Bits 16-19: Clock divider factor This value used to configure an internal programmable divider (from 1 to 16) acting on the incoming RNG clock. These bits can be written only when the core is disabled (RNGEN1=10). ... Writing these bits is taken into account only if the CONDRST bit is set to 1 in the same access, while CONFIGLOCK remains at 0. Writing to this bit is ignored if CONFIGLOCK1=11..

RNG_CONFIG1

Bits 20-25: RNG configuration 1 Reserved to the RNG configuration (bitfield 1). Must be initialized using the recommended value documented in Section120.6: RNG entropy source validation. Writing any bit of RNG_CONFIG1 is taken into account only if the CONDRST bit is set to 1 in the same access, while CONFIGLOCK remains at 0. Writing to this bit is ignored if CONFIGLOCK1=11..

CONDRST

Bit 30: Conditioning soft reset Write 1 and then write 0 to reset the conditioning logic, clear all the FIFOs and start a new RNG initialization process, with RNG_SR cleared. Registers RNG_CR and RNG_HTCR are not changed by CONDRST. This bit must be set to 1 in the same access that set any configuration bits [29:4]. In other words, when CONDRST bit is set to 1 correct configuration in bits [29:4] must also be written. When CONDRST is set to 0 by the software, its value goes to 0 when the reset process is done. It takes about 2 AHB clock cycles + 2 RNG clock cycles..

CONFIGLOCK

Bit 31: RNG Config lock This bitfield is set once: if this bit is set it can only be reset to 0 if RNG is reset..

RNG_SR

RNG status register

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

3/5 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SEIS
rw
CEIS
rw
SECS
r
CECS
r
DRDY
r
Toggle fields

DRDY

Bit 0: Data ready Once the output buffer becomes empty (after reading the RNG_DR register), this bit returns to 0 until a new random value is generated. Note: The DRDY bit can rise when the peripheral is disabled (RNGEN1=10 in the RNG_CR register). If IE=1 in the RNG_CR register, an interrupt is generated when DRDY1=11..

CECS

Bit 1: Clock error current status Note: CECS bit is valid only if the CED bit in the RNG_CR register is set to 0..

SECS

Bit 2: Seed error current status Runtime repetition count test failed (noise source has provided more than 24 consecutive bits at a constant value 0 or 1, or more than 32 consecutive occurrence of two bits patterns 01 or 10) Startup or continuous adaptive proportion test on noise source failed. Startup post-processing/conditioning sanity check failed..

CEIS

Bit 5: Clock error interrupt status This bit is set at the same time as CECS. It is cleared by writing 0. Writing 1 has no effect. An interrupt is pending if IE = 1 in the RNG_CR register..

SEIS

Bit 6: Seed error interrupt status This bit is set at the same time as SECS. It is cleared by writing 0 (unless CONDRST is used). Writing 1 has no effect. An interrupt is pending if IE = 1 in the RNG_CR register..

RNG_DR

RNG data register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
RNDATA
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RNDATA
r
Toggle fields

RNDATA

Bits 0-31: Random data 32-bit random data, which are valid when DRDY1=11. When DRDY1=10, the RNDATA value is1zero. When DRDY is set, it is recommended to always verify that RNG_DR is different from zero. Because when it is the case a seed error occurred between RNG_SR polling and RND_DR output reading (rare event)..

RNG_HTCR

RNG health test control register

Offset: 0x10, size: 32, reset: 0x000072AC, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
HTCFG
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
HTCFG
rw
Toggle fields

HTCFG

Bits 0-31: health test configuration This configuration is used by RNG to configure the health tests. See Section120.6: RNG entropy source validation for the recommended value. Note: The RNG behavior, including the read to this register, is not guaranteed if a different value from the recommended value is written..

RTC

0x40002800: RTC register block

33/135 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 RTC_TR
0x4 RTC_DR
0x8 RTC_SSR
0xc RTC_ICSR
0x10 RTC_PRER
0x14 RTC_WUTR
0x18 RTC_CR
0x24 RTC_WPR
0x28 RTC_CALR
0x2c RTC_SHIFTR
0x30 RTC_TSTR
0x34 RTC_TSDR
0x38 RTC_TSSSR
0x40 RTC_ALRMAR
0x44 RTC_ALRMASSR
0x48 RTC_ALRMBR
0x4c RTC_ALRMBSSR
0x50 RTC_SR
0x54 RTC_MISR
0x5c RTC_SCR
0x70 RTC_ALRABINR
0x74 RTC_ALRBBINR
Toggle registers

RTC_TR

RTC time register

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PM
rw
HT
rw
HU
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MNT
rw
MNU
rw
ST
rw
SU
rw
Toggle fields

SU

Bits 0-3: Second units in BCD format.

ST

Bits 4-6: Second tens in BCD format.

MNU

Bits 8-11: Minute units in BCD format.

MNT

Bits 12-14: Minute tens in BCD format.

HU

Bits 16-19: Hour units in BCD format.

HT

Bits 20-21: Hour tens in BCD format.

PM

Bit 22: AM/PM notation.

RTC_DR

RTC date register

Offset: 0x4, size: 32, reset: 0x00002101, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
YT
rw
YU
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
WDU
rw
MT
rw
MU
rw
DT
rw
DU
rw
Toggle fields

DU

Bits 0-3: Date units in BCD format.

DT

Bits 4-5: Date tens in BCD format.

MU

Bits 8-11: Month units in BCD format.

MT

Bit 12: Month tens in BCD format.

WDU

Bits 13-15: Week day units ....

YU

Bits 16-19: Year units in BCD format.

YT

Bits 20-23: Year tens in BCD format.

RTC_SSR

RTC subsecond register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SS
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SS
r
Toggle fields

SS

Bits 0-31: Synchronous binary counter SS[31:16]: Synchronous binary counter MSB values When Binary or Mixed mode is selected (BIN = 01 or 10 or 11): SS[31:16] are the 16 MSB of the SS[31:0] free-running down-counter. When BCD mode is selected (BIN=00): SS[31:16] are forced by hardware to 0x0000. SS[15:0]: Subsecond value/synchronous binary counter LSB values When Binary mode is selected (BIN = 01 or 10 or 11): SS[15:0] are the 16 LSB of the SS[31:0] free-running down-counter. When BCD mode is selected (BIN=00): SS[15:0] is the value in the synchronous prescaler counter. The fraction of a second is given by the formula below: Second fraction = (PREDIV_S - SS) / (PREDIV_S + 1) SS can be larger than PREDIV_S only after a shift operation. In that case, the correct time/date is one second less than as indicated by RTC_TR/RTC_DR..

RTC_ICSR

RTC initialization control and status register

Offset: 0xc, size: 32, reset: 0x00000007, access: Unspecified

5/9 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
RECALPF
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BCDU
rw
BIN
rw
INIT
rw
INITF
r
RSF
rw
INITS
r
SHPF
r
WUTWF
r
Toggle fields

WUTWF

Bit 2: Wake-up timer write flag This bit is set by hardware when WUT value can be changed, after the WUTE bit has been set to 0 in RTC_CR. It is cleared by hardware in initialization mode..

SHPF

Bit 3: Shift operation pending This flag is set by hardware as soon as a shift operation is initiated by a write to the RTC_SHIFTR register. It is cleared by hardware when the corresponding shift operation has been executed. Writing to the SHPF bit has no effect..

INITS

Bit 4: Initialization status flag This bit is set by hardware when the calendar year field is different from 0 (Backup domain reset state)..

RSF

Bit 5: Registers synchronization flag This bit is set by hardware each time the calendar registers are copied into the shadow registers (RTC_SSR, RTC_TR and RTC_DR). This bit is cleared by hardware in initialization mode, while a shift operation is pending (SHPF = 1), or when in bypass shadow register mode (BYPSHAD = 1). This bit can also be cleared by software. It is cleared either by software or by hardware in initialization mode..

INITF

Bit 6: Initialization flag When this bit is set to 1, the RTC is in initialization state, and the time, date and prescaler registers can be updated..

INIT

Bit 7: Initialization mode.

BIN

Bits 8-9: Binary mode.

BCDU

Bits 10-12: BCD update (BIN = 10 or 11) In mixed mode when both BCD calendar and binary extended counter are used (BIN = 10 or 11), the calendar second is incremented using the SSR Least Significant Bits..

RECALPF

Bit 16: Recalibration pending Flag The RECALPF status flag is automatically set to 1 when software writes to the RTC_CALR register, indicating that the RTC_CALR register is blocked. When the new calibration settings are taken into account, this bit returns to 0. Refer to Re-calibration on-the-fly..

RTC_PRER

RTC prescaler register

Offset: 0x10, size: 32, reset: 0x007F00FF, access: Unspecified

0/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PREDIV_A
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PREDIV_S
rw
Toggle fields

PREDIV_S

Bits 0-14: Synchronous prescaler factor This is the synchronous division factor: ck_spre frequency = ck_apre frequency/(PREDIV_S+1).

PREDIV_A

Bits 16-22: Asynchronous prescaler factor This is the asynchronous division factor: ck_apre frequency = RTCCLK frequency/(PREDIV_A+1).

RTC_WUTR

RTC wake-up timer register

Offset: 0x14, size: 32, reset: 0x0000FFFF, access: Unspecified

0/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
WUTOCLR
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
WUT
rw
Toggle fields

WUT

Bits 0-15: Wake-up auto-reload value bits When the wake-up timer is enabled (WUTE set to 1), the WUTF flag is set every (WUT[15:0]1+11) ck_wut cycles. The ck_wut period is selected through WUCKSEL[2:0] bits of the RTC_CR register. When WUCKSEL[2] = 1, the wake-up timer becomes 17-bits and WUCKSEL[1] effectively becomes WUT[16] the most-significant bit to be reloaded into the timer. The first assertion of WUTF occurs between WUT and (WUT + 2) ck_wut cycles after WUTE is set. Setting WUT[15:0] to 0x0000 with WUCKSEL[2:0] = 011 (RTCCLK/2) is forbidden..

WUTOCLR

Bits 16-31: Wake-up auto-reload output clear value When WUTOCLR[15:0] is different from 0x0000, WUTF is set by hardware when the auto-reload down-counter reaches 0 and is cleared by hardware when the auto-reload downcounter reaches WUTOCLR[15:0]. When WUTOCLR[15:0] = 0x0000, WUTF is set by hardware when the WUT down-counter reaches 0 and is cleared by software..

RTC_CR

RTC control register

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/29 fields covered.

Toggle fields

WUCKSEL

Bits 0-2: ck_wut wake-up clock selection 10x: ck_spre (usually 11Hz) clock is selected in BCD mode. In binary or mixed mode, this is the clock selected by BCDU. 11x: ck_spre (usually 1 Hz) clock is selected in BCD mode. In binary or mixed mode, this is the clock selected by BCDU. Furthermore, 2<sup>16</sup> is added to the WUT counter value..

TSEDGE

Bit 3: Timestamp event active edge TSE must be reset when TSEDGE is changed to avoid unwanted TSF setting..

REFCKON

Bit 4: RTC_REFIN reference clock detection enable (50 or 601Hz) Note: BIN must be 0x00 and PREDIV_S must be 0x00FF..

BYPSHAD

Bit 5: Bypass the shadow registers Note: If the frequency of the APB clock is less than seven times the frequency of RTCCLK, BYPSHAD must be set to 1..

FMT

Bit 6: Hour format.

SSRUIE

Bit 7: SSR underflow interrupt enable.

ALRAE

Bit 8: Alarm A enable.

ALRBE

Bit 9: Alarm B enable.

WUTE

Bit 10: Wake-up timer enable Note: When the wake-up timer is disabled, wait for WUTWF = 1 before enabling it again..

TSE

Bit 11: timestamp enable.

ALRAIE

Bit 12: Alarm A interrupt enable.

ALRBIE

Bit 13: Alarm B interrupt enable.

WUTIE

Bit 14: Wake-up timer interrupt enable.

TSIE

Bit 15: Timestamp interrupt enable.

ADD1H

Bit 16: Add 1 hour (summer time change) When this bit is set outside initialization mode, 1 hour is added to the calendar time. This bit is always read as 0..

SUB1H

Bit 17: Subtract 1 hour (winter time change) When this bit is set outside initialization mode, 1 hour is subtracted to the calendar time if the current hour is not 0. This bit is always read as 0. Setting this bit has no effect when current hour is 0..

BKP

Bit 18: Backup This bit can be written by the user to memorize whether the daylight saving time change has been performed or not..

COSEL

Bit 19: Calibration output selection When COE = 1, this bit selects which signal is output on CALIB. These frequencies are valid for RTCCLK at 32.7681kHz and prescalers at their default values (PREDIV_A = 127 and PREDIV_S = 255). Refer to Section128.3.16: Calibration clock output..

POL

Bit 20: Output polarity This bit is used to configure the polarity of TAMPALRM output..

OSEL

Bits 21-22: Output selection These bits are used to select the flag to be routed to TAMPALRM output..

COE

Bit 23: Calibration output enable This bit enables the CALIB output.

ITSE

Bit 24: timestamp on internal event enable.

TAMPTS

Bit 25: Activate timestamp on tamper detection event TAMPTS is valid even if TSE = 0 in the RTC_CR register. Timestamp flag is set up to 3 ck_apre cycles after the tamper flags. Note: TAMPTS must be cleared before entering RTC initialization mode..

TAMPOE

Bit 26: Tamper detection output enable on TAMPALRM.

ALRAFCLR

Bit 27: Alarm A flag automatic clear.

ALRBFCLR

Bit 28: Alarm B flag automatic clear.

TAMPALRM_PU

Bit 29: TAMPALRM pull-up enable.

TAMPALRM_TYPE

Bit 30: TAMPALRM output type.

OUT2EN

Bit 31: RTC_OUT2 output enable.

RTC_WPR

RTC write protection register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
KEY
w
Toggle fields

KEY

Bits 0-7: Write protection key This byte is written by software. Reading this byte always returns 0x00. Refer to RTC register write protection for a description of how to unlock RTC register write protection..

RTC_CALR

RTC calibration register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/5 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CALP
rw
CALW8
rw
CALW16
rw
LPCAL
rw
CALM
rw
Toggle fields

CALM

Bits 0-8: Calibration minus The frequency of the calendar is reduced by masking CALM out of 2<sup>20</sup> RTCCLK pulses (321seconds if the input frequency is 327681Hz). This decreases the frequency of the calendar with a resolution of 0.95371ppm. To increase the frequency of the calendar, this feature should be used in conjunction with CALP. See Section128.3.14: RTC smooth digital calibration on page1733..

LPCAL

Bit 12: RTC low-power mode.

CALW16

Bit 13: Use a 16-second calibration cycle period When CALW16 is set to 1, the 16-second calibration cycle period is selected. This bit must not be set to 1 if CALW8 = 1. Note: CALM[0] is stuck at 0 when CALW16 = 1. Refer to Section128.3.14: RTC smooth digital calibration..

CALW8

Bit 14: Use an 8-second calibration cycle period When CALW8 is set to 1, the 8-second calibration cycle period is selected. Note: CALM[1:0] are stuck at 00 when CALW8 = 1. Refer to Section128.3.14: RTC smooth digital calibration..

CALP

Bit 15: Increase frequency of RTC by 488.51ppm..

RTC_SHIFTR

RTC shift control register

Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified

0/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ADD1S
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SUBFS
w
Toggle fields

SUBFS

Bits 0-14: Subtract a fraction of a second These bits are write only and is always read as zero. Writing to this bit has no effect when a shift operation is pending (when SHPF = 1, in RTC_ICSR). The value which is written to SUBFS is added to the synchronous prescaler counter. Since this counter counts down, this operation effectively subtracts from (delays) the clock by: Delay (seconds) = SUBFS / (PREDIV_S + 1) A fraction of a second can effectively be added to the clock (advancing the clock) when the ADD1S function is used in conjunction with SUBFS, effectively advancing the clock by: Advance (seconds) = (1 - (SUBFS / (PREDIV_S + 1))). In mixed BCD-binary mode (BIN=10 or 11), the SUBFS[14:BCDU+8] must be written with 0. Note: Writing to SUBFS causes RSF to be cleared. Software can then wait until RSF = 1 to be sure that the shadow registers have been updated with the shifted time..

ADD1S

Bit 31: Add one second This bit is write only and is always read as zero. Writing to this bit has no effect when a shift operation is pending (when SHPF = 1, in RTC_ICSR). This function is intended to be used with SUBFS (see description below) in order to effectively add a fraction of a second to the clock in an atomic operation..

RTC_TSTR

RTC timestamp time register

Offset: 0x30, size: 32, reset: 0x00000000, access: Unspecified

7/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PM
r
HT
r
HU
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MNT
r
MNU
r
ST
r
SU
r
Toggle fields

SU

Bits 0-3: Second units in BCD format..

ST

Bits 4-6: Second tens in BCD format..

MNU

Bits 8-11: Minute units in BCD format..

MNT

Bits 12-14: Minute tens in BCD format..

HU

Bits 16-19: Hour units in BCD format..

HT

Bits 20-21: Hour tens in BCD format..

PM

Bit 22: AM/PM notation.

RTC_TSDR

RTC timestamp date register

Offset: 0x34, size: 32, reset: 0x00000000, access: Unspecified

5/5 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
WDU
r
MT
r
MU
r
DT
r
DU
r
Toggle fields

DU

Bits 0-3: Date units in BCD format.

DT

Bits 4-5: Date tens in BCD format.

MU

Bits 8-11: Month units in BCD format.

MT

Bit 12: Month tens in BCD format.

WDU

Bits 13-15: Week day units.

RTC_TSSSR

RTC timestamp subsecond register

Offset: 0x38, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SS
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SS
r
Toggle fields

SS

Bits 0-31: Subsecond value/synchronous binary counter values SS[31:0] is the value of the synchronous prescaler counter when the timestamp event occurred..

RTC_ALRMAR

RTC alarm A register

Offset: 0x40, size: 32, reset: 0x00000000, access: Unspecified

0/14 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MSK4
rw
WDSEL
rw
DT
rw
DU
rw
MSK3
rw
PM
rw
HT
rw
HU
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MSK2
rw
MNT
rw
MNU
rw
MSK1
rw
ST
rw
SU
rw
Toggle fields

SU

Bits 0-3: Second units in BCD format..

ST

Bits 4-6: Second tens in BCD format..

MSK1

Bit 7: Alarm A seconds mask.

MNU

Bits 8-11: Minute units in BCD format.

MNT

Bits 12-14: Minute tens in BCD format.

MSK2

Bit 15: Alarm A minutes mask.

HU

Bits 16-19: Hour units in BCD format.

HT

Bits 20-21: Hour tens in BCD format.

PM

Bit 22: AM/PM notation.

MSK3

Bit 23: Alarm A hours mask.

DU

Bits 24-27: Date units or day in BCD format.

DT

Bits 28-29: Date tens in BCD format.

WDSEL

Bit 30: Week day selection.

MSK4

Bit 31: Alarm A date mask.

RTC_ALRMASSR

RTC alarm A subsecond register

Offset: 0x44, size: 32, reset: 0x00000000, access: Unspecified

0/3 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SSCLR
rw
MASKSS
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SS
rw
Toggle fields

SS

Bits 0-14: Subseconds value This value is compared with the contents of the synchronous prescaler counter to determine if alarm A is to be activated. Only bits 0 up MASKSS-1 are compared. This field is the mirror of SS[14:0] in the RTC_ALRABINR, and so can also be read or written through RTC_ALRABINR..

MASKSS

Bits 24-29: Mask the most-significant bits starting at this bit ... From 32 to 63: All 32 SS bits are compared and must match to activate alarm. Note: In BCD mode (BIN=00) the overflow bits of the synchronous counter (bits 31:15) are never compared. These bits can be different from 0 only after a shift operation..

SSCLR

Bit 31: Clear synchronous counter on alarm (Binary mode only) Note: SSCLR must be kept to 0 when BCD or mixed mode is used (BIN = 00, 10 or 11)..

RTC_ALRMBR

RTC alarm B register

Offset: 0x48, size: 32, reset: 0x00000000, access: Unspecified

0/14 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MSK4
rw
WDSEL
rw
DT
rw
DU
rw
MSK3
rw
PM
rw
HT
rw
HU
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MSK2
rw
MNT
rw
MNU
rw
MSK1
rw
ST
rw
SU
rw
Toggle fields

SU

Bits 0-3: Second units in BCD format.

ST

Bits 4-6: Second tens in BCD format.

MSK1

Bit 7: Alarm B seconds mask.

MNU

Bits 8-11: Minute units in BCD format.

MNT

Bits 12-14: Minute tens in BCD format.

MSK2

Bit 15: Alarm B minutes mask.

HU

Bits 16-19: Hour units in BCD format.

HT

Bits 20-21: Hour tens in BCD format.

PM

Bit 22: AM/PM notation.

MSK3

Bit 23: Alarm B hours mask.

DU

Bits 24-27: Date units or day in BCD format.

DT

Bits 28-29: Date tens in BCD format.

WDSEL

Bit 30: Week day selection.

MSK4

Bit 31: Alarm B date mask.

RTC_ALRMBSSR

RTC alarm B subsecond register

Offset: 0x4c, size: 32, reset: 0x00000000, access: Unspecified

0/3 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SSCLR
rw
MASKSS
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SS
rw
Toggle fields

SS

Bits 0-14: Subseconds value This value is compared with the contents of the synchronous prescaler counter to determine if alarm B is to be activated. Only bits 0 up to MASKSS-1 are compared. This field is the mirror of SS[14:0] in the RTC_ALRBBINR, and so can also be read or written through RTC_ALRBBINR..

MASKSS

Bits 24-29: Mask the most-significant bits starting at this bit ... From 32 to 63: All 32 SS bits are compared and must match to activate alarm. Note: In BCD mode (BIN=00)The overflow bits of the synchronous counter (bits 15) is never compared. This bit can be different from 0 only after a shift operation..

SSCLR

Bit 31: Clear synchronous counter on alarm (Binary mode only) Note: SSCLR must be kept to 0 when BCD or mixed mode is used (BIN = 00, 10 or 11)..

RTC_SR

RTC status register

Offset: 0x50, size: 32, reset: 0x00000000, access: Unspecified

7/7 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SSRUF
r
ITSF
r
TSOVF
r
TSF
r
WUTF
r
ALRBF
r
ALRAF
r
Toggle fields

ALRAF

Bit 0: Alarm A flag This flag is set by hardware when the time/date registers (RTC_TR and RTC_DR) match the alarm A register (RTC_ALRMAR)..

ALRBF

Bit 1: Alarm B flag This flag is set by hardware when the time/date registers (RTC_TR and RTC_DR) match the alarm B register (RTC_ALRMBR)..

WUTF

Bit 2: Wake-up timer flag This flag is set by hardware when the wake-up auto-reload counter reaches 0. If WUTOCLR[15:0] is different from 0x0000, WUTF is cleared by hardware when the wake-up auto-reload counter reaches WUTOCLR value. If WUTOCLR[15:0] is 0x0000, WUTF must be cleared by software. This flag must be cleared by software at least 1.5 RTCCLK periods before WUTF is set to 1 again..

TSF

Bit 3: Timestamp flag This flag is set by hardware when a timestamp event occurs. If ITSF flag is set, TSF must be cleared together with ITSF. Note: TSF is not set if TAMPTS1=11 and the tamper flag is read during the 3 ck_apre cycles following tamper event. Refer to Timestamp on tamper event for more details..

TSOVF

Bit 4: Timestamp overflow flag This flag is set by hardware when a timestamp event occurs while TSF is already set. It is recommended to check and then clear TSOVF only after clearing the TSF bit. Otherwise, an overflow might not be noticed if a timestamp event occurs immediately before the TSF bit is cleared..

ITSF

Bit 5: Internal timestamp flag This flag is set by hardware when a timestamp on the internal event occurs..

SSRUF

Bit 6: SSR underflow flag This flag is set by hardware when the SSR rolls under 0. SSRUF is not set when SSCLR=1..

RTC_MISR

RTC masked interrupt status register

Offset: 0x54, size: 32, reset: 0x00000000, access: Unspecified

7/7 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SSRUMF
r
ITSMF
r
TSOVMF
r
TSMF
r
WUTMF
r
ALRBMF
r
ALRAMF
r
Toggle fields

ALRAMF

Bit 0: Alarm A masked flag This flag is set by hardware when the alarm A interrupt occurs..

ALRBMF

Bit 1: Alarm B masked flag This flag is set by hardware when the alarm B interrupt occurs..

WUTMF

Bit 2: Wake-up timer masked flag This flag is set by hardware when the wake-up timer interrupt occurs. This flag must be cleared by software at least 1.5 RTCCLK periods before WUTF is set to 1 again..

TSMF

Bit 3: Timestamp masked flag This flag is set by hardware when a timestamp interrupt occurs. If ITSF flag is set, TSF must be cleared together with ITSF..

TSOVMF

Bit 4: Timestamp overflow masked flag This flag is set by hardware when a timestamp interrupt occurs while TSMF is already set. It is recommended to check and then clear TSOVF only after clearing the TSF bit. Otherwise, an overflow might not be noticed if a timestamp event occurs immediately before the TSF bit is cleared..

ITSMF

Bit 5: Internal timestamp masked flag This flag is set by hardware when a timestamp on the internal event occurs and timestampinterrupt is raised..

SSRUMF

Bit 6: SSR underflow masked flag This flag is set by hardware when the SSR underflow interrupt occurs..

RTC_SCR

RTC status clear register

Offset: 0x5c, size: 32, reset: 0x00000000, access: Unspecified

0/7 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CSSRUF
w
CITSF
w
CTSOVF
w
CTSF
w
CWUTF
w
CALRBF
w
CALRAF
w
Toggle fields

CALRAF

Bit 0: Clear alarm A flag Writing 1 in this bit clears the ALRAF bit in the RTC_SR register..

CALRBF

Bit 1: Clear alarm B flag Writing 1 in this bit clears the ALRBF bit in the RTC_SR register..

CWUTF

Bit 2: Clear wake-up timer flag Writing 1 in this bit clears the WUTF bit in the RTC_SR register..

CTSF

Bit 3: Clear timestamp flag Writing 1 in this bit clears the TSF bit in the RTC_SR register. If ITSF flag is set, TSF must be cleared together with ITSF by setting CRSF and CITSF..

CTSOVF

Bit 4: Clear timestamp overflow flag Writing 1 in this bit clears the TSOVF bit in the RTC_SR register. It is recommended to check and then clear TSOVF only after clearing the TSF bit. Otherwise, an overflow might not be noticed if a timestamp event occurs immediately before the TSF bit is cleared..

CITSF

Bit 5: Clear internal timestamp flag Writing 1 in this bit clears the ITSF bit in the RTC_SR register..

CSSRUF

Bit 6: Clear SSR underflow flag Writing 1 in this bit clears the SSRUF in the RTC_SR register..

RTC_ALRABINR

RTC alarm A binary mode register

Offset: 0x70, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SS
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SS
rw
Toggle fields

SS

Bits 0-31: Synchronous counter alarm value in Binary mode This value is compared with the contents of the synchronous counter to determine if Alarm A is to be activated. Only bits 0 up MASKSS-1 are compared. SS[14:0] is the mirror of SS[14:0] in the RTC_ALRMASSRR, and so can also be read or written through RTC_ALRMASSR..

RTC_ALRBBINR

RTC alarm B binary mode register

Offset: 0x74, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SS
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SS
rw
Toggle fields

SS

Bits 0-31: Synchronous counter alarm value in Binary mode This value is compared with the contents of the synchronous counter to determine if Alarm Bis to be activated. Only bits 0 up MASKSS-1 are compared. SS[14:0] is the mirror of SS[14:0] in the RTC_ALRMBSSRR, and so can also be read or written through RTC_ALRMBSSR..

SPI1

0x40013000: SPI address block description

10/39 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 (16-bit) SPI_CR1
0x4 (16-bit) SPI_CR2
0x8 (16-bit) SPI_SR
0xc (16-bit) SPI_DR
0x10 (16-bit) SPI_CRCPR
0x14 (16-bit) SPI_RXCRCR
0x18 (16-bit) SPI_TXCRCR
Toggle registers

SPI_CR1

SPI control register 1

Offset: 0x0, size: 16, reset: 0x00000000, access: Unspecified

0/14 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BIDIMODE
rw
BIDIOE
rw
CRCEN
rw
CRCNEXT
rw
CRCL
rw
RXONLY
rw
SSM
rw
SSI
rw
LSBFIRST
rw
SPE
rw
BR
rw
MSTR
rw
CPOL
rw
CPHA
rw
Toggle fields

CPHA

Bit 0: Clock phase Note: This bit should not be changed when communication is ongoing. Note: This bit is not used in SPI TI mode except the case when CRC is applied at TI mode..

CPOL

Bit 1: Clock polarity Note: This bit should not be changed when communication is ongoing. Note: This bit is not used in SPI TI mode except the case when CRC is applied at TI mode..

MSTR

Bit 2: Master selection Note: This bit should not be changed when communication is ongoing..

BR

Bits 3-5: Baud rate control Note: These bits should not be changed when communication is ongoing..

SPE

Bit 6: SPI enable Note: When disabling the SPI, follow the procedure described in Procedure for disabling the SPI on page1954..

LSBFIRST

Bit 7: Frame format Note: 1. This bit should not be changed when communication is ongoing. Note: 2. This bit is not used in SPI TI mode..

SSI

Bit 8: Internal slave select This bit has an effect only when the SSM bit is set. The value of this bit is forced onto the NSS pin and the I/O value of the NSS pin is ignored. Note: This bit is not used in SPI TI mode..

SSM

Bit 9: Software slave management When the SSM bit is set, the NSS pin input is replaced with the value from the SSI bit. Note: This bit is not used in SPI TI mode..

RXONLY

Bit 10: Receive only mode enabled. This bit enables simplex communication using a single unidirectional line to receive data exclusively. Keep BIDIMODE bit clear when receive only mode is active.This bit is also useful in a multislave system in which this particular slave is not accessed, the output from the accessed slave is not corrupted..

CRCL

Bit 11: CRC length This bit is set and cleared by software to select the CRC length. Note: This bit should be written only when SPI is disabled (SPE = 0) for correct operation..

CRCNEXT

Bit 12: Transmit CRC next Note: This bit has to be written as soon as the last data is written in the SPI_DR register..

CRCEN

Bit 13: Hardware CRC calculation enable Note: This bit should be written only when SPI is disabled (SPE = 0) for correct operation..

BIDIOE

Bit 14: Output enable in bidirectional mode This bit combined with the BIDIMODE bit selects the direction of transfer in bidirectional mode. Note: In master mode, the MOSI pin is used and in slave mode, the MISO pin is used..

BIDIMODE

Bit 15: Bidirectional data mode enable. This bit enables half-duplex communication using common single bidirectional data line. Keep RXONLY bit clear when bidirectional mode is active..

SPI_CR2

SPI control register 2

Offset: 0x4, size: 16, reset: 0x00000700, access: Unspecified

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LDMA_TX
rw
LDMA_RX
rw
FRXTH
rw
DS
rw
TXEIE
rw
RXNEIE
rw
ERRIE
rw
FRF
rw
NSSP
rw
SSOE
rw
TXDMAEN
rw
RXDMAEN
rw
Toggle fields

RXDMAEN

Bit 0: Rx buffer DMA enable When this bit is set, a DMA request is generated whenever the RXNE flag is set..

TXDMAEN

Bit 1: Tx buffer DMA enable When this bit is set, a DMA request is generated whenever the TXE flag is set..

SSOE

Bit 2: SS output enable Note: This bit is not used in SPI TI mode..

NSSP

Bit 3: NSS pulse management This bit is used in master mode only. it allows the SPI to generate an NSS pulse between two consecutive data when doing continuous transfers. In the case of a single data transfer, it forces the NSS pin high level after the transfer. It has no meaning if CPHA = 1, or FRF = 1. Note: 1. This bit must be written only when the SPI is disabled (SPE=0). Note: 2. This bit is not used in SPI TI mode..

FRF

Bit 4: Frame format 1 SPI TI mode Note: This bit must be written only when the SPI is disabled (SPE=0)..

ERRIE

Bit 5: Error interrupt enable This bit controls the generation of an interrupt when an error condition occurs (CRCERR, OVR, MODF in SPI mode, FRE at TI mode)..

RXNEIE

Bit 6: RX buffer not empty interrupt enable.

TXEIE

Bit 7: Tx buffer empty interrupt enable.

DS

Bits 8-11: Data size These bits configure the data length for SPI transfers. If software attempts to write one of the Not used values, they are forced to the value 0111 (8-bit).

FRXTH

Bit 12: FIFO reception threshold This bit is used to set the threshold of the RXFIFO that triggers an RXNE event.

LDMA_RX

Bit 13: Last DMA transfer for reception This bit is used in data packing mode, to define if the total number of data to receive by DMA is odd or even. It has significance only if the RXDMAEN bit in the SPI_CR2 register is set and if packing mode is used (data length =< 8-bit and write access to SPI_DR is 16-bit wide). It has to be written when the SPI is disabled (SPE = 0 in the SPI_CR1 register). Note: Refer to Procedure for disabling the SPI on page1954 if the CRCEN bit is set..

LDMA_TX

Bit 14: Last DMA transfer for transmission This bit is used in data packing mode, to define if the total number of data to transmit by DMA is odd or even. It has significance only if the TXDMAEN bit in the SPI_CR2 register is set and if packing mode is used (data length =< 8-bit and write access to SPI_DR is 16-bit wide). It has to be written when the SPI is disabled (SPE = 0 in the SPI_CR1 register). Note: Refer to Procedure for disabling the SPI on page1954 if the CRCEN bit is set..

SPI_SR

SPI status register

Offset: 0x8, size: 16, reset: 0x00000002, access: Unspecified

8/9 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
FTLVL
r
FRLVL
r
FRE
r
BSY
r
OVR
r
MODF
r
CRCERR
rw
TXE
r
RXNE
r
Toggle fields

RXNE

Bit 0: Receive buffer not empty.

TXE

Bit 1: Transmit buffer empty.

CRCERR

Bit 4: CRC error flag Note: This flag is set by hardware and cleared by software writing 0..

MODF

Bit 5: Mode fault This flag is set by hardware and reset by a software sequence. Refer to Section1: Mode fault (MODF) on page1964 for the software sequence..

OVR

Bit 6: Overrun flag This flag is set by hardware and reset by a software sequence..

BSY

Bit 7: Busy flag This flag is set and cleared by hardware. Note: The BSY flag must be used with caution: refer to Section133.4.10: SPI status flags and Procedure for disabling the SPI on page1954..

FRE

Bit 8: Frame format error This flag is used for SPI in TI slave mode. Refer to Section133.4.11: SPI error flags. This flag is set by hardware and reset when SPI_SR is read by software..

FRLVL

Bits 9-10: FIFO reception level These bits are set and cleared by hardware. Note: These bits are not used in SPI receive-only mode while CRC calculation is enabled..

FTLVL

Bits 11-12: FIFO transmission level These bits are set and cleared by hardware..

SPI_DR

SPI data register

Offset: 0xc, size: 16, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DR
rw
Toggle fields

DR

Bits 0-15: Data register Data received or to be transmitted The data register serves as an interface between the Rx and Tx FIFOs. When the data register is read, RxFIFO is accessed while the write to data register accesses TxFIFO (See Section133.4.9: Data transmission and reception procedures). Note: Data is always right-aligned. Unused bits are ignored when writing to the register, and read as zero when the register is read. The Rx threshold setting must always correspond with the read access currently used..

SPI_CRCPR

SPI CRC polynomial register

Offset: 0x10, size: 16, reset: 0x00000007, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CRCPOLY
rw
Toggle fields

CRCPOLY

Bits 0-15: CRC polynomial register This register contains the polynomial for the CRC calculation. The CRC polynomial (0x0007) is the reset value of this register. Another polynomial can be configured as required..

SPI_RXCRCR

SPI Rx CRC register

Offset: 0x14, size: 16, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RXCRC
r
Toggle fields

RXCRC

Bits 0-15: Rx CRC register When CRC calculation is enabled, the RXCRC[15:0] bits contain the computed CRC value of the subsequently received bytes. This register is reset when the CRCEN bit in SPI_CR1 register is written to 1. The CRC is calculated serially using the polynomial programmed in the SPI_CRCPR register. Only the 8 LSB bits are considered when the CRC frame format is set to be 8-bit length (CRCL bit in the SPI_CR1 is cleared). CRC calculation is done based on any CRC8 standard. The entire 16-bits of this register are considered when a 16-bit CRC frame format is selected (CRCL bit in the SPI_CR1 register is set). CRC calculation is done based on any CRC16 standard. Note: A read to this register when the BSY Flag is set could return an incorrect value..

SPI_TXCRCR

SPI Tx CRC register

Offset: 0x18, size: 16, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TXCRC
r
Toggle fields

TXCRC

Bits 0-15: Tx CRC register When CRC calculation is enabled, the TXCRC[7:0] bits contain the computed CRC value of the subsequently transmitted bytes. This register is reset when the CRCEN bit of SPI_CR1 is written to 1. The CRC is calculated serially using the polynomial programmed in the SPI_CRCPR register. Only the 8 LSB bits are considered when the CRC frame format is set to be 8-bit length (CRCL bit in the SPI_CR1 is cleared). CRC calculation is done based on any CRC8 standard. The entire 16-bits of this register are considered when a 16-bit CRC frame format is selected (CRCL bit in the SPI_CR1 register is set). CRC calculation is done based on any CRC16 standard. Note: A read to this register when the BSY flag is set could return an incorrect value..

SPI2

0x40003800: SPI address block description

10/39 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 (16-bit) SPI_CR1
0x4 (16-bit) SPI_CR2
0x8 (16-bit) SPI_SR
0xc (16-bit) SPI_DR
0x10 (16-bit) SPI_CRCPR
0x14 (16-bit) SPI_RXCRCR
0x18 (16-bit) SPI_TXCRCR
Toggle registers

SPI_CR1

SPI control register 1

Offset: 0x0, size: 16, reset: 0x00000000, access: Unspecified

0/14 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BIDIMODE
rw
BIDIOE
rw
CRCEN
rw
CRCNEXT
rw
CRCL
rw
RXONLY
rw
SSM
rw
SSI
rw
LSBFIRST
rw
SPE
rw
BR
rw
MSTR
rw
CPOL
rw
CPHA
rw
Toggle fields

CPHA

Bit 0: Clock phase Note: This bit should not be changed when communication is ongoing. Note: This bit is not used in SPI TI mode except the case when CRC is applied at TI mode..

CPOL

Bit 1: Clock polarity Note: This bit should not be changed when communication is ongoing. Note: This bit is not used in SPI TI mode except the case when CRC is applied at TI mode..

MSTR

Bit 2: Master selection Note: This bit should not be changed when communication is ongoing..

BR

Bits 3-5: Baud rate control Note: These bits should not be changed when communication is ongoing..

SPE

Bit 6: SPI enable Note: When disabling the SPI, follow the procedure described in Procedure for disabling the SPI on page1954..

LSBFIRST

Bit 7: Frame format Note: 1. This bit should not be changed when communication is ongoing. Note: 2. This bit is not used in SPI TI mode..

SSI

Bit 8: Internal slave select This bit has an effect only when the SSM bit is set. The value of this bit is forced onto the NSS pin and the I/O value of the NSS pin is ignored. Note: This bit is not used in SPI TI mode..

SSM

Bit 9: Software slave management When the SSM bit is set, the NSS pin input is replaced with the value from the SSI bit. Note: This bit is not used in SPI TI mode..

RXONLY

Bit 10: Receive only mode enabled. This bit enables simplex communication using a single unidirectional line to receive data exclusively. Keep BIDIMODE bit clear when receive only mode is active.This bit is also useful in a multislave system in which this particular slave is not accessed, the output from the accessed slave is not corrupted..

CRCL

Bit 11: CRC length This bit is set and cleared by software to select the CRC length. Note: This bit should be written only when SPI is disabled (SPE = 0) for correct operation..

CRCNEXT

Bit 12: Transmit CRC next Note: This bit has to be written as soon as the last data is written in the SPI_DR register..

CRCEN

Bit 13: Hardware CRC calculation enable Note: This bit should be written only when SPI is disabled (SPE = 0) for correct operation..

BIDIOE

Bit 14: Output enable in bidirectional mode This bit combined with the BIDIMODE bit selects the direction of transfer in bidirectional mode. Note: In master mode, the MOSI pin is used and in slave mode, the MISO pin is used..

BIDIMODE

Bit 15: Bidirectional data mode enable. This bit enables half-duplex communication using common single bidirectional data line. Keep RXONLY bit clear when bidirectional mode is active..

SPI_CR2

SPI control register 2

Offset: 0x4, size: 16, reset: 0x00000700, access: Unspecified

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LDMA_TX
rw
LDMA_RX
rw
FRXTH
rw
DS
rw
TXEIE
rw
RXNEIE
rw
ERRIE
rw
FRF
rw
NSSP
rw
SSOE
rw
TXDMAEN
rw
RXDMAEN
rw
Toggle fields

RXDMAEN

Bit 0: Rx buffer DMA enable When this bit is set, a DMA request is generated whenever the RXNE flag is set..

TXDMAEN

Bit 1: Tx buffer DMA enable When this bit is set, a DMA request is generated whenever the TXE flag is set..

SSOE

Bit 2: SS output enable Note: This bit is not used in SPI TI mode..

NSSP

Bit 3: NSS pulse management This bit is used in master mode only. it allows the SPI to generate an NSS pulse between two consecutive data when doing continuous transfers. In the case of a single data transfer, it forces the NSS pin high level after the transfer. It has no meaning if CPHA = 1, or FRF = 1. Note: 1. This bit must be written only when the SPI is disabled (SPE=0). Note: 2. This bit is not used in SPI TI mode..

FRF

Bit 4: Frame format 1 SPI TI mode Note: This bit must be written only when the SPI is disabled (SPE=0)..

ERRIE

Bit 5: Error interrupt enable This bit controls the generation of an interrupt when an error condition occurs (CRCERR, OVR, MODF in SPI mode, FRE at TI mode)..

RXNEIE

Bit 6: RX buffer not empty interrupt enable.

TXEIE

Bit 7: Tx buffer empty interrupt enable.

DS

Bits 8-11: Data size These bits configure the data length for SPI transfers. If software attempts to write one of the Not used values, they are forced to the value 0111 (8-bit).

FRXTH

Bit 12: FIFO reception threshold This bit is used to set the threshold of the RXFIFO that triggers an RXNE event.

LDMA_RX

Bit 13: Last DMA transfer for reception This bit is used in data packing mode, to define if the total number of data to receive by DMA is odd or even. It has significance only if the RXDMAEN bit in the SPI_CR2 register is set and if packing mode is used (data length =< 8-bit and write access to SPI_DR is 16-bit wide). It has to be written when the SPI is disabled (SPE = 0 in the SPI_CR1 register). Note: Refer to Procedure for disabling the SPI on page1954 if the CRCEN bit is set..

LDMA_TX

Bit 14: Last DMA transfer for transmission This bit is used in data packing mode, to define if the total number of data to transmit by DMA is odd or even. It has significance only if the TXDMAEN bit in the SPI_CR2 register is set and if packing mode is used (data length =< 8-bit and write access to SPI_DR is 16-bit wide). It has to be written when the SPI is disabled (SPE = 0 in the SPI_CR1 register). Note: Refer to Procedure for disabling the SPI on page1954 if the CRCEN bit is set..

SPI_SR

SPI status register

Offset: 0x8, size: 16, reset: 0x00000002, access: Unspecified

8/9 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
FTLVL
r
FRLVL
r
FRE
r
BSY
r
OVR
r
MODF
r
CRCERR
rw
TXE
r
RXNE
r
Toggle fields

RXNE

Bit 0: Receive buffer not empty.

TXE

Bit 1: Transmit buffer empty.

CRCERR

Bit 4: CRC error flag Note: This flag is set by hardware and cleared by software writing 0..

MODF

Bit 5: Mode fault This flag is set by hardware and reset by a software sequence. Refer to Section1: Mode fault (MODF) on page1964 for the software sequence..

OVR

Bit 6: Overrun flag This flag is set by hardware and reset by a software sequence..

BSY

Bit 7: Busy flag This flag is set and cleared by hardware. Note: The BSY flag must be used with caution: refer to Section133.4.10: SPI status flags and Procedure for disabling the SPI on page1954..

FRE

Bit 8: Frame format error This flag is used for SPI in TI slave mode. Refer to Section133.4.11: SPI error flags. This flag is set by hardware and reset when SPI_SR is read by software..

FRLVL

Bits 9-10: FIFO reception level These bits are set and cleared by hardware. Note: These bits are not used in SPI receive-only mode while CRC calculation is enabled..

FTLVL

Bits 11-12: FIFO transmission level These bits are set and cleared by hardware..

SPI_DR

SPI data register

Offset: 0xc, size: 16, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DR
rw
Toggle fields

DR

Bits 0-15: Data register Data received or to be transmitted The data register serves as an interface between the Rx and Tx FIFOs. When the data register is read, RxFIFO is accessed while the write to data register accesses TxFIFO (See Section133.4.9: Data transmission and reception procedures). Note: Data is always right-aligned. Unused bits are ignored when writing to the register, and read as zero when the register is read. The Rx threshold setting must always correspond with the read access currently used..

SPI_CRCPR

SPI CRC polynomial register

Offset: 0x10, size: 16, reset: 0x00000007, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CRCPOLY
rw
Toggle fields

CRCPOLY

Bits 0-15: CRC polynomial register This register contains the polynomial for the CRC calculation. The CRC polynomial (0x0007) is the reset value of this register. Another polynomial can be configured as required..

SPI_RXCRCR

SPI Rx CRC register

Offset: 0x14, size: 16, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RXCRC
r
Toggle fields

RXCRC

Bits 0-15: Rx CRC register When CRC calculation is enabled, the RXCRC[15:0] bits contain the computed CRC value of the subsequently received bytes. This register is reset when the CRCEN bit in SPI_CR1 register is written to 1. The CRC is calculated serially using the polynomial programmed in the SPI_CRCPR register. Only the 8 LSB bits are considered when the CRC frame format is set to be 8-bit length (CRCL bit in the SPI_CR1 is cleared). CRC calculation is done based on any CRC8 standard. The entire 16-bits of this register are considered when a 16-bit CRC frame format is selected (CRCL bit in the SPI_CR1 register is set). CRC calculation is done based on any CRC16 standard. Note: A read to this register when the BSY Flag is set could return an incorrect value..

SPI_TXCRCR

SPI Tx CRC register

Offset: 0x18, size: 16, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TXCRC
r
Toggle fields

TXCRC

Bits 0-15: Tx CRC register When CRC calculation is enabled, the TXCRC[7:0] bits contain the computed CRC value of the subsequently transmitted bytes. This register is reset when the CRCEN bit of SPI_CR1 is written to 1. The CRC is calculated serially using the polynomial programmed in the SPI_CRCPR register. Only the 8 LSB bits are considered when the CRC frame format is set to be 8-bit length (CRCL bit in the SPI_CR1 is cleared). CRC calculation is done based on any CRC8 standard. The entire 16-bits of this register are considered when a 16-bit CRC frame format is selected (CRCL bit in the SPI_CR1 register is set). CRC calculation is done based on any CRC16 standard. Note: A read to this register when the BSY flag is set could return an incorrect value..

SYSCFG

0x40010000: SYSCFG register block

76/104 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 SYSCFG_CFGR1
0x18 SYSCFG_CFGR2
0x1c SYSCFG_SCSR
0x20 SYSCFG_SKR
0x24 SYSCFG_TSCCR
0x80 SYSCFG_ITLINE0
0x84 SYSCFG_ITLINE1
0x88 SYSCFG_ITLINE2
0x8c SYSCFG_ITLINE3
0x90 SYSCFG_ITLINE4
0x94 SYSCFG_ITLINE5
0x98 SYSCFG_ITLINE6
0x9c SYSCFG_ITLINE7
0xa0 SYSCFG_ITLINE8
0xa4 SYSCFG_ITLINE9
0xa8 SYSCFG_ITLINE10
0xac SYSCFG_ITLINE11
0xb0 SYSCFG_ITLINE12
0xb4 SYSCFG_ITLINE13
0xb8 SYSCFG_ITLINE14
0xbc SYSCFG_ITLINE15
0xc0 SYSCFG_ITLINE16
0xc4 SYSCFG_ITLINE17
0xc8 SYSCFG_ITLINE18
0xcc SYSCFG_ITLINE19
0xd0 SYSCFG_ITLINE20
0xd4 SYSCFG_ITLINE21
0xd8 SYSCFG_ITLINE22
0xdc SYSCFG_ITLINE23
0xe0 SYSCFG_ITLINE24
0xe4 SYSCFG_ITLINE25
0xe8 SYSCFG_ITLINE26
0xec SYSCFG_ITLINE27
0xf0 SYSCFG_ITLINE28
0xf4 SYSCFG_ITLINE29
0xf8 SYSCFG_ITLINE30
0xfc SYSCFG_ITLINE31
Toggle registers

SYSCFG_CFGR1

SYSCFG configuration register 1

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/13 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
I2C3_FMP
rw
I2C_PA10_FMP
rw
I2C_PA9_FMP
rw
I2C_PB9_FMP
rw
I2C_PB8_FMP
rw
I2C_PB7_FMP
rw
I2C_PB6_FMP
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BOOSTEN
rw
IR_MOD
rw
IR_POL
rw
PA12_RMP
rw
PA11_RMP
rw
MEM_MODE
rw
Toggle fields

MEM_MODE

Bits 0-1: Memory mapping selection bits These bits are set and cleared by software. They control the memory internal mapping at address 0x000010000. After reset these bits take on the value selected by the actual boot mode configuration. Refer to Section12.5: Boot configuration for more details. X0: Main flash memory mapped at 0x000010000.

PA11_RMP

Bit 3: PA11 pin remapping This bit is set and cleared by software. When set, it remaps the PA11 pin to operate as PA9 GPIO port, instead as PA11 GPIO port..

PA12_RMP

Bit 4: PA12 pin remapping This bit is set and cleared by software. When set, it remaps the PA12 pin to operate as PA10 GPIO port, instead as PA12 GPIO port..

IR_POL

Bit 5: IR output polarity selection.

IR_MOD

Bits 6-7: IR Modulation Envelope signal selection This bitfield selects the signal for IR modulation envelope:.

BOOSTEN

Bit 8: I/O analog switch voltage booster enable This bit selects the way of supplying I/O analog switches: When using the analog inputs , setting to 0 is recommended for high V<sub>DD</sub>, setting to 1 for low V<sub>DD</sub> (less than 2.4 V)..

I2C_PB6_FMP

Bit 16: Fast Mode Plus (FM+) enable for PB6 This bit is set and cleared by software. It enables I<sup>2</sup>C FM+ driving capability on PB6 I/O port. With this bit in disable state, the I<sup>2</sup>C FM+ driving capability on this I/O port can be enabled through one of I2Cx_FMP bits. When I<sup>2</sup>C FM+ is enabled, the speed control is ignored. Note: This control bit is kept for legacy reasons. It is recommended to use the FMP bit of the I2Cx_CR1 register instead..

I2C_PB7_FMP

Bit 17: Fast Mode Plus (FM+) enable for PB7 This bit is set and cleared by software. It enables I<sup>2</sup>C FM+ driving capability on PB7 I/O port. With this bit in disable state, the I<sup>2</sup>C FM+ driving capability on this I/O port can be enabled through one of I2Cx_FMP bits. When I<sup>2</sup>C FM+ is enabled, the speed control is ignored. Note: This control bit is kept for legacy reasons. It is recommended to use the FMP bit of the I2Cx_CR1 register instead..

I2C_PB8_FMP

Bit 18: Fast Mode Plus (FM+) enable for PB8 This bit is set and cleared by software. It enables I<sup>2</sup>C FM+ driving capability on PB8 I/O port. With this bit in disable state, the I<sup>2</sup>C FM+ driving capability on this I/O port can be enabled through one of I2Cx_FMP bits. When I<sup>2</sup>C FM+ is enabled, the speed control is ignored. Note: This control bit is kept for legacy reasons. It is recommended to use the FMP bit of the I2Cx_CR1 register instead..

I2C_PB9_FMP

Bit 19: Fast Mode Plus (FM+) enable for PB9 This bit is set and cleared by software. It enables I<sup>2</sup>C FM+ driving capability on PB9 I/O port. With this bit in disable state, the I<sup>2</sup>C FM+ driving capability on this I/O port can be enabled through one of I2Cx_FMP bits. When I<sup>2</sup>C FM+ is enabled, the speed control is ignored. Note: This control bit is kept for legacy reasons. It is recommended to use the FMP bit of the I2Cx_CR1 register instead..

I2C_PA9_FMP

Bit 22: Fast Mode Plus (FM+) enable for PA9 This bit is set and cleared by software. It enables I<sup>2</sup>C FM+ driving capability on PA9 I/O port. With this bit in disable state, the I<sup>2</sup>C FM+ driving capability on this I/O port can be enabled through one of I2Cx_FMP bits. When I<sup>2</sup>C FM+ is enabled, the speed control is ignored. Note: This control bit is kept for legacy reasons. It is recommended to use the FMP bit of the I2Cx_CR1 register instead..

I2C_PA10_FMP

Bit 23: Fast Mode Plus (FM+) enable for PA10 This bit is set and cleared by software. It enables I<sup>2</sup>C FM+ driving capability on PA10 I/O port. With this bit in disable state, the I<sup>2</sup>C FM+ driving capability on this I/O port can be enabled through one of I2Cx_FMP bits. When I<sup>2</sup>C FM+ is enabled, the speed control is ignored. Note: This control bit is kept for legacy reasons. It is recommended to use the FMP bit of the I2Cx_CR1 register instead..

I2C3_FMP

Bit 24: Fast Mode Plus (FM+) enable for I2C3 This bit is set and cleared by software. It enables I<sup>2</sup>C FM+ driving capability on I/O ports configured as I2C3 through GPIOx_AFR registers. With this bit in disable state, the I<sup>2</sup>C FM+ driving capability on I/O ports configured as I2C3 can be enabled through their corresponding I2Cx_FMP bit. When I<sup>2</sup>C FM+ is enabled, the speed control is ignored. Note: This control bit is kept for legacy reasons. It is recommended to use the FMP bit of the I2Cx_CR1 register instead..

SYSCFG_CFGR2

SYSCFG configuration register 2

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/7 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SPF
rw
BKPF
rw
BKPL
rw
ECCL
rw
PVDL
rw
SPL
rw
CCL
rw
Toggle fields

CCL

Bit 0: Cortex<Superscript>1<Default 1 Font>-M0+ LOCKUP bit enable bit This bit is set by software and cleared by a system reset. It can be use to enable and lock the connection of Cortex<Superscript>1<Default 1 Font>-M0+ LOCKUP (Hardfault) output to TIM1/15/16 Break input..

SPL

Bit 1: SRAM1 parity lock bit This bit is set by software and cleared by a system reset. It can be used to enable and lock the SRAM1 parity error signal connection to TIM1/15/16 Break input..

PVDL

Bit 2: PVD lock enable bit This bit is set by software and cleared by a system reset. It can be used to enable and lock the PVD connection to TIM1/15/16 Break input, as well as the PVDE and PLS[2:0] in the PWR_CR register..

ECCL

Bit 3: ECC error lock bit This bit is set by software and cleared by a system reset. It can be used to enable and lock the flash ECC 2-bit error detection signal connection to TIM1/15/16 Break input..

BKPL

Bit 4: Backup SRAM2 parity lock This bit is set by software and cleared by a system reset. It can be used to enable and lock the SRAM2 parity error signal connection to TIM1/15/16 Break input..

BKPF

Bit 7: Backup SRAM2 parity error flag This bit is set by hardware when an SRAM2 parity error is detected. It is cleared by software by writing 1..

SPF

Bit 8: SRAM1 parity error flag This bit is set by hardware when an SRAM1 parity error is detected. It is cleared by software by writing 1..

SYSCFG_SCSR

SYSCFG SRAM2 control and status register

Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified

1/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SRAM2BSY
r
SRAM2ER
rw
Toggle fields

SRAM2ER

Bit 0: SRAM2 erase Setting this bit starts a hardware SRAM2 erase operation. This bit is automatically cleared at the end of the SRAM2 erase operation. Note: This bit is write-protected: setting this bit is possible only after the correct key sequence is written in the SYSCFG_SKR register..

SRAM2BSY

Bit 1: SRAM2 busy by erase operation.

SYSCFG_SKR

SYSCFG SRAM2 key register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
KEY
w
Toggle fields

KEY

Bits 0-7: SRAM2 write protection key for software erase The following steps are required to unlock the write protection of the SRAM2ER bit in the SYSCFG_CFGR2 register: Write 0xCA into KEY[7:0] Write 0x53 into KEY[7:0] Writing a wrong key reactivates the write protection..

SYSCFG_TSCCR

SYSCFG TSC comparator register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TSC_IOCTRL
rw
G7_IO1
rw
G6_IO1
rw
G4_IO3
rw
G2_IO3
rw
G2_IO1
rw
Toggle fields

G2_IO1

Bit 0: Comparator mode for group 2 on I/O 1.

G2_IO3

Bit 1: Comparator mode for group 2 on I/O 3.

G4_IO3

Bit 2: Comparator mode for group 4 on I/O 3.

G6_IO1

Bit 3: Comparator mode for group 6 on I/O 1.

G7_IO1

Bit 4: Comparator mode for group 7 on I/O 1.

TSC_IOCTRL

Bit 5: I/O control in comparator mode The I/O control in comparator mode can be overwritten by hardware..

SYSCFG_ITLINE0

SYSCFG interrupt line 0 status register

Offset: 0x80, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
WWDG
r
Toggle fields

WWDG

Bit 0: Window watchdog interrupt pending flag.

SYSCFG_ITLINE1

SYSCFG interrupt line 1 status register

Offset: 0x84, size: 32, reset: 0x00000000, access: Unspecified

4/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PVMOUT4
r
PVMOUT3
r
PVMOUT1
r
PVDOUT
r
Toggle fields

PVDOUT

Bit 0: PVD supply monitoring interrupt request pending (EXTI line 16)..

PVMOUT1

Bit 1: V<sub>DDUSB</sub> supply monitoring interrupt request pending (EXTI line 19).

PVMOUT3

Bit 2: ADC supply monitoring interrupt request pending (EXTI line 20).

PVMOUT4

Bit 3: DAC supply monitoring interrupt request pending (EXTI line 21).

SYSCFG_ITLINE2

SYSCFG interrupt line 2 status register

Offset: 0x88, size: 32, reset: 0x00000000, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RTC
r
TAMP
r
Toggle fields

TAMP

Bit 0: Tamper interrupt request pending (EXTI line 21).

RTC

Bit 1: RTC interrupt request pending (EXTI line 19).

SYSCFG_ITLINE3

SYSCFG interrupt line 3 status register

Offset: 0x8c, size: 32, reset: 0x00000000, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
FLASH_ECC
r
FLASH_ITF
r
Toggle fields

FLASH_ITF

Bit 0: Flash interface interrupt request pending.

FLASH_ECC

Bit 1: Flash interface ECC interrupt request pending.

SYSCFG_ITLINE4

SYSCFG interrupt line 4 status register

Offset: 0x90, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RCC
r
Toggle fields

RCC

Bit 0: Reset and clock control interrupt request pending.

SYSCFG_ITLINE5

SYSCFG interrupt line 5 status register

Offset: 0x94, size: 32, reset: 0x00000000, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EXTI1
r
EXTI0
r
Toggle fields

EXTI0

Bit 0: EXTI line 0 interrupt request pending.

EXTI1

Bit 1: EXTI line 1 interrupt request pending.

SYSCFG_ITLINE6

SYSCFG interrupt line 6 status register

Offset: 0x98, size: 32, reset: 0x00000000, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EXTI3
r
EXTI2
r
Toggle fields

EXTI2

Bit 0: EXTI line 2 interrupt request pending.

EXTI3

Bit 1: EXTI line 3 interrupt request pending.

SYSCFG_ITLINE7

SYSCFG interrupt line 7 status register

Offset: 0x9c, size: 32, reset: 0x00000000, access: Unspecified

12/12 fields covered.

Toggle fields

EXTI4

Bit 0: EXTI line 4 interrupt request pending.

EXTI5

Bit 1: EXTI line 5 interrupt request pending.

EXTI6

Bit 2: EXTI line 6 interrupt request pending.

EXTI7

Bit 3: EXTI line 7 interrupt request pending.

EXTI8

Bit 4: EXTI line 8 interrupt request pending.

EXTI9

Bit 5: EXTI line 9 interrupt request pending.

EXTI10

Bit 6: EXTI line 10 interrupt request pending.

EXTI11

Bit 7: EXTI line 11 interrupt request pending.

EXTI12

Bit 8: EXTI line 12 interrupt request pending.

EXTI13

Bit 9: EXTI line 13 interrupt request pending.

EXTI14

Bit 10: EXTI line 14 interrupt request pending.

EXTI15

Bit 11: EXTI line 15 interrupt request pending.

SYSCFG_ITLINE8

SYSCFG interrupt line 8 status register

Offset: 0xa0, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
USB
r
Toggle fields

USB

Bit 0: USB interrupt request pending.

SYSCFG_ITLINE9

SYSCFG interrupt line 9 status register

Offset: 0xa4, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DMA1_CH1
r
Toggle fields

DMA1_CH1

Bit 0: DMA1 channel 1 interrupt request pending.

SYSCFG_ITLINE10

SYSCFG interrupt line 10 status register

Offset: 0xa8, size: 32, reset: 0x00000000, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DMA1_CH3
r
DMA1_CH2
r
Toggle fields

DMA1_CH2

Bit 0: DMA1 channel 2 interrupt request pending.

DMA1_CH3

Bit 1: DMA1 channel 3 interrupt request pending.

SYSCFG_ITLINE11

SYSCFG interrupt line 11 status register

Offset: 0xac, size: 32, reset: 0x00000000, access: Unspecified

10/10 fields covered.

Toggle fields

DMAMUX

Bit 0: DMAMUX interrupt request pending.

DMA1_CH4

Bit 1: DMA1 channel 4 interrupt request pending.

DMA1_CH5

Bit 2: DMA1 channel 5 interrupt request pending.

DMA1_CH6

Bit 3: DMA1 channel 6 interrupt request pending.

DMA1_CH7

Bit 4: DMA1 channel 7 interrupt request pending.

DMA2_CH1

Bit 5: DMA2 channel 1 interrupt request pending.

DMA2_CH2

Bit 6: DMA2 channel 2 interrupt request pending.

DMA2_CH3

Bit 7: DMA2 channel 3 interrupt request pending.

DMA2_CH4

Bit 8: DMA2 channel 4 interrupt request pending.

DMA2_CH5

Bit 9: DMA2 channel 5 interrupt request pending.

SYSCFG_ITLINE12

SYSCFG interrupt line 12 status register

Offset: 0xb0, size: 32, reset: 0x00000000, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
COMP1
r
ADC
r
Toggle fields

ADC

Bit 0: ADC interrupt request pending.

COMP1

Bit 1: Comparator 1 interrupt request pending (EXTI line 17).

SYSCFG_ITLINE13

SYSCFG interrupt line 13 status register

Offset: 0xb4, size: 32, reset: 0x00000000, access: Unspecified

4/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TIM1_BRK
r
TIM1_UPD
r
TIM1_TRG
r
TIM1_CCU
r
Toggle fields

TIM1_CCU

Bit 0: Timer 1 commutation interrupt request pending.

TIM1_TRG

Bit 1: Timer 1 trigger interrupt request pending.

TIM1_UPD

Bit 2: Timer 1 update interrupt request pending.

TIM1_BRK

Bit 3: Timer 1 break interrupt request pending.

SYSCFG_ITLINE14

SYSCFG interrupt line 14 status register

Offset: 0xb8, size: 32, reset: 0x00000000, access: Unspecified

4/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TIM1_CC4
r
TIM1_CC3
r
TIM1_CC2
r
TIM1_CC1
r
Toggle fields

TIM1_CC1

Bit 0: Timer 1 capture compare 1 interrupt request pending.

TIM1_CC2

Bit 1: Timer 1 capture compare 2 interrupt request pending.

TIM1_CC3

Bit 2: Timer 1 capture compare 3 interrupt request pending.

TIM1_CC4

Bit 3: Timer 1 capture compare 4 interrupt request pending.

SYSCFG_ITLINE15

SYSCFG interrupt line 15 status register

Offset: 0xbc, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TIM2
r
Toggle fields

TIM2

Bit 0: Timer 2 interrupt request pending.

SYSCFG_ITLINE16

SYSCFG interrupt line 16 status register

Offset: 0xc0, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TIM3
r
Toggle fields

TIM3

Bit 0: Timer 3 interrupt request pending.

SYSCFG_ITLINE17

SYSCFG interrupt line 17 status register

Offset: 0xc4, size: 32, reset: 0x00000000, access: Unspecified

3/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LPTIM1
r
DAC
r
TIM6
r
Toggle fields

TIM6

Bit 0: Timer 6 interrupt request pending.

DAC

Bit 1: DAC underrun interrupt request pending.

LPTIM1

Bit 2: Low-power timer 1 interrupt request pending (EXTI line 29).

SYSCFG_ITLINE18

SYSCFG interrupt line 18 status register

Offset: 0xc8, size: 32, reset: 0x00000000, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LPTIM2
r
TIM7
r
Toggle fields

TIM7

Bit 0: Timer 7 interrupt request pending.

LPTIM2

Bit 1: Low-power timer 2 interrupt request pending (EXTI line 30).

SYSCFG_ITLINE19

SYSCFG interrupt line 19 status register

Offset: 0xcc, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TIM15
r
Toggle fields

TIM15

Bit 0: Timer 15 interrupt request pending.

SYSCFG_ITLINE20

SYSCFG interrupt line 20 status register

Offset: 0xd0, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TIM16
r
Toggle fields

TIM16

Bit 0: Timer 16 interrupt request pending.

SYSCFG_ITLINE21

SYSCFG interrupt line 21 status register

Offset: 0xd4, size: 32, reset: 0x00000000, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TSC_EOA
r
TSC_MCE
r
Toggle fields

TSC_MCE

Bit 0: TSC max count error interrupt request pending.

TSC_EOA

Bit 1: TSC end of acquisition interrupt request pending.

SYSCFG_ITLINE22

SYSCFG interrupt line 22 status register

Offset: 0xd8, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LCD
r
Toggle fields

LCD

Bit 0: LCD interrupt request pending.

SYSCFG_ITLINE23

SYSCFG interrupt line 23 status register

Offset: 0xdc, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
I2C1
r
Toggle fields

I2C1

Bit 0: I2C1 interrupt request pending (EXTI line 33).

SYSCFG_ITLINE24

SYSCFG interrupt line 24 status register

Offset: 0xe0, size: 32, reset: 0x00000000, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
I2C3
r
I2C2
r
Toggle fields

I2C2

Bit 0: I2C2 interrupt request pending.

I2C3

Bit 2: I2C3 interrupt request pending (EXTI line 23).

SYSCFG_ITLINE25

SYSCFG interrupt line 25 status register

Offset: 0xe4, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SPI1
r
Toggle fields

SPI1

Bit 0: SPI1 interrupt request pending.

SYSCFG_ITLINE26

SYSCFG interrupt line 26 status register

Offset: 0xe8, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SPI2
r
Toggle fields

SPI2

Bit 0: SPI2 interrupt request pending.

SYSCFG_ITLINE27

SYSCFG interrupt line 27 status register

Offset: 0xec, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
USART1
r
Toggle fields

USART1

Bit 0: USART1 interrupt request pending, combined with EXTI line 25.

SYSCFG_ITLINE28

SYSCFG interrupt line 28 status register

Offset: 0xf0, size: 32, reset: 0x00000000, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LPUART2
r
USART2
r
Toggle fields

USART2

Bit 0: USART2 interrupt request pending (EXTI line 35).

LPUART2

Bit 1: LPUART2 interrupt request pending (EXTI line 31).

SYSCFG_ITLINE29

SYSCFG interrupt line 29 status register

Offset: 0xf4, size: 32, reset: 0x00000000, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LPUART1
r
USART3
r
Toggle fields

USART3

Bit 0: USART3 interrupt request pending.

LPUART1

Bit 1: LPUART1 interrupt request pending (EXTI line 30).

SYSCFG_ITLINE30

SYSCFG interrupt line 30 status register

Offset: 0xf8, size: 32, reset: 0x00000000, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LPUART3
r
USART4
r
Toggle fields

USART4

Bit 0: USART4 interrupt request pending.

LPUART3

Bit 1: LPUART3 interrupt request pending (EXTI line 32).

SYSCFG_ITLINE31

SYSCFG interrupt line 31 status register

Offset: 0xfc, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RNG
r
Toggle fields

RNG

Bit 0: RNG interrupt request pending.

TAMP

0x4000b000: TAMP register block

18/77 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 TAMP_CR1
0x4 TAMP_CR2
0x8 TAMP_CR3
0xc TAMP_FLTCR
0x2c TAMP_IER
0x30 TAMP_SR
0x34 TAMP_MISR
0x3c TAMP_SCR
0x100 TAMP_BKP0R
0x104 TAMP_BKP1R
0x108 TAMP_BKP2R
0x10c TAMP_BKP3R
0x110 TAMP_BKP4R
0x114 TAMP_BKP5R
0x118 TAMP_BKP6R
0x11c TAMP_BKP7R
0x120 TAMP_BKP8R
Toggle registers

TAMP_CR1

TAMP control register 1

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/9 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ITAMP6E
rw
ITAMP5E
rw
ITAMP4E
rw
ITAMP3E
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TAMP5E
rw
TAMP4E
rw
TAMP3E
rw
TAMP2E
rw
TAMP1E
rw
Toggle fields

TAMP1E

Bit 0: Tamper detection on TAMP_IN1 enable.

TAMP2E

Bit 1: Tamper detection on TAMP_IN2 enable<sup>(1)</sup>.

TAMP3E

Bit 2: Tamper detection on TAMP_IN3 enable<sup>(1)</sup>.

TAMP4E

Bit 3: Tamper detection on TAMP_IN4 enable<sup>(1)</sup>.

TAMP5E

Bit 4: Tamper detection on TAMP_IN5 enable<sup>(1)</sup>.

ITAMP3E

Bit 18: Internal tamper 3 enable.

ITAMP4E

Bit 19: Internal tamper 4 enable.

ITAMP5E

Bit 20: Internal tamper 5 enable.

ITAMP6E

Bit 21: Internal tamper 6 enable.

TAMP_CR2

TAMP control register 2

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/15 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TAMP5TRG
rw
TAMP4TRG
rw
TAMP3TRG
rw
TAMP2TRG
rw
TAMP1TRG
rw
BKERASE
w
BKBLOCK
rw
TAMP3MSK
rw
TAMP2MSK
rw
TAMP1MSK
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TAMP5POM
rw
TAMP4POM
rw
TAMP3POM
rw
TAMP2POM
rw
TAMP1POM
rw
Toggle fields

TAMP1POM

Bit 0: Tamper 1 potential mode.

TAMP2POM

Bit 1: Tamper 2 potential mode.

TAMP3POM

Bit 2: Tamper 3 potential mode.

TAMP4POM

Bit 3: Tamper 4 potential mode.

TAMP5POM

Bit 4: Tamper 5 potential mode.

TAMP1MSK

Bit 16: Tamper 1 mask The tamper 1 interrupt must not be enabled when TAMP1MSK is set..

TAMP2MSK

Bit 17: Tamper 2 mask The tamper 2 interrupt must not be enabled when TAMP2MSK is set..

TAMP3MSK

Bit 18: Tamper 3 mask The tamper 3 interrupt must not be enabled when TAMP3MSK is set..

BKBLOCK

Bit 22: Backup registers and device secrets<sup>(1)</sup> access blocked.

BKERASE

Bit 23: Backup registers and device secrets<sup>(1)</sup> erase Writing 1 to this bit reset the backup registers and device secrets<sup>(1)</sup>. Writing 0 has no effect. This bit is always read as 0..

TAMP1TRG

Bit 24: Active level for tamper 1 input If TAMPFLT1=100 tamper 1 input rising edge triggers a tamper detection event. If TAMPFLT1=100 tamper 1 input falling edge triggers a tamper detection event..

TAMP2TRG

Bit 25: Active level for tamper 2 input If TAMPFLT = 00 tamper 2 input rising edge triggers a tamper detection event. If TAMPFLT1=100 tamper 2 input falling edge triggers a tamper detection event..

TAMP3TRG

Bit 26: Active level for tamper 3 input If TAMPFLT1=100 tamper 3 input rising edge triggers a tamper detection event. If TAMPFLT1=100 tamper 3 input falling edge triggers a tamper detection event..

TAMP4TRG

Bit 27: Active level for tamper 4 input (active mode disabled) If TAMPFLT1=100 tamper 4 input rising edge triggers a tamper detection event. If TAMPFLT1=100 tamper 4 input falling edge triggers a tamper detection event..

TAMP5TRG

Bit 28: Active level for tamper 5 input (active mode disabled) If TAMPFLT1=100 tamper 5 input rising edge triggers a tamper detection event. If TAMPFLT1=100 tamper 5 input falling edge triggers a tamper detection event..

TAMP_CR3

TAMP control register 3

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ITAMP6POM
rw
ITAMP5POM
rw
ITAMP4POM
rw
ITAMP3POM
rw
Toggle fields

ITAMP3POM

Bit 2: Internal tamper 3 potential mode.

ITAMP4POM

Bit 3: Internal tamper 4 potential mode.

ITAMP5POM

Bit 4: Internal tamper 5 potential mode.

ITAMP6POM

Bit 5: Internal tamper 6 potential mode.

TAMP_FLTCR

TAMP filter control register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TAMPPUDIS
rw
TAMPPRCH
rw
TAMPFLT
rw
TAMPFREQ
rw
Toggle fields

TAMPFREQ

Bits 0-2: Tamper sampling frequency Determines the frequency at which each of the TAMP_INx inputs are sampled..

TAMPFLT

Bits 3-4: TAMP_INx filter count These bits determines the number of consecutive samples at the specified level (TAMP*TRG) needed to activate a tamper event. TAMPFLT is valid for each of the TAMP_INx inputs..

TAMPPRCH

Bits 5-6: TAMP_INx precharge duration These bit determines the duration of time during which the pull-up/is activated before each sample. TAMPPRCH is valid for each of the TAMP_INx inputs..

TAMPPUDIS

Bit 7: TAMP_INx pull-up disable This bit determines if each of the TAMPx pins are precharged before each sample..

TAMP_IER

TAMP interrupt enable register

Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified

0/9 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ITAMP6IE
rw
ITAMP5IE
rw
ITAMP4IE
rw
ITAMP3IE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TAMP5IE
rw
TAMP4IE
rw
TAMP3IE
rw
TAMP2IE
rw
TAMP1IE
rw
Toggle fields

TAMP1IE

Bit 0: Tamper 1 interrupt enable.

TAMP2IE

Bit 1: Tamper 2 interrupt enable.

TAMP3IE

Bit 2: Tamper 3 interrupt enable.

TAMP4IE

Bit 3: Tamper 4 interrupt enable.

TAMP5IE

Bit 4: Tamper 5 interrupt enable.

ITAMP3IE

Bit 18: Internal tamper 3 interrupt enable.

ITAMP4IE

Bit 19: Internal tamper 4 interrupt enable.

ITAMP5IE

Bit 20: Internal tamper 5 interrupt enable.

ITAMP6IE

Bit 21: Internal tamper 6 interrupt enable.

TAMP_SR

TAMP status register

Offset: 0x30, size: 32, reset: 0x00000000, access: Unspecified

9/9 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ITAMP6F
r
ITAMP5F
r
ITAMP4F
r
ITAMP3F
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TAMP5F
r
TAMP4F
r
TAMP3F
r
TAMP2F
r
TAMP1F
r
Toggle fields

TAMP1F

Bit 0: TAMP1 detection flag This flag is set by hardware when a tamper detection event is detected on the TAMP1 input..

TAMP2F

Bit 1: TAMP2 detection flag This flag is set by hardware when a tamper detection event is detected on the TAMP2 input..

TAMP3F

Bit 2: TAMP3 detection flag This flag is set by hardware when a tamper detection event is detected on the TAMP3 input..

TAMP4F

Bit 3: TAMP4 detection flag This flag is set by hardware when a tamper detection event is detected on the TAMP4 input..

TAMP5F

Bit 4: TAMP5 detection flag This flag is set by hardware when a tamper detection event is detected on the TAMP5 input..

ITAMP3F

Bit 18: Internal tamper 3 flag This flag is set by hardware when a tamper detection event is detected on the internal tamper 3..

ITAMP4F

Bit 19: Internal tamper 4 flag This flag is set by hardware when a tamper detection event is detected on the internal tamper 4..

ITAMP5F

Bit 20: Internal tamper 5 flag This flag is set by hardware when a tamper detection event is detected on the internal tamper 5..

ITAMP6F

Bit 21: Internal tamper 6 flag This flag is set by hardware when a tamper detection event is detected on the internal tamper 6..

TAMP_MISR

TAMP masked interrupt status register

Offset: 0x34, size: 32, reset: 0x00000000, access: Unspecified

9/9 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ITAMP6MF
r
ITAMP5MF
r
ITAMP4MF
r
ITAMP3MF
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TAMP5MF
r
TAMP4MF
r
TAMP3MF
r
TAMP2MF
r
TAMP1MF
r
Toggle fields

TAMP1MF

Bit 0: TAMP1 interrupt masked flag This flag is set by hardware when the tamper 1 interrupt is raised..

TAMP2MF

Bit 1: TAMP2 interrupt masked flag This flag is set by hardware when the tamper 2 interrupt is raised..

TAMP3MF

Bit 2: TAMP3 interrupt masked flag This flag is set by hardware when the tamper 3 interrupt is raised..

TAMP4MF

Bit 3: TAMP4 interrupt masked flag This flag is set by hardware when the tamper 4 interrupt is raised..

TAMP5MF

Bit 4: TAMP5 interrupt masked flag This flag is set by hardware when the tamper 5 interrupt is raised..

ITAMP3MF

Bit 18: Internal tamper 3 interrupt masked flag This flag is set by hardware when the internal tamper 3 interrupt is raised..

ITAMP4MF

Bit 19: Internal tamper 4 interrupt masked flag This flag is set by hardware when the internal tamper 4 interrupt is raised..

ITAMP5MF

Bit 20: Internal tamper 5 interrupt masked flag This flag is set by hardware when the internal tamper 5 interrupt is raised..

ITAMP6MF

Bit 21: Internal tamper 6 interrupt masked flag This flag is set by hardware when the internal tamper 6 interrupt is raised..

TAMP_SCR

TAMP status clear register

Offset: 0x3c, size: 32, reset: 0x00000000, access: Unspecified

0/9 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CITAMP6F
w
CITAMP5F
w
CITAMP4F
w
CITAMP3F
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CTAMP5F
w
CTAMP4F
w
CTAMP3F
w
CTAMP2F
w
CTAMP1F
w
Toggle fields

CTAMP1F

Bit 0: Clear TAMP1 detection flag Writing 1 in this bit clears the TAMP1F bit in the TAMP_SR register..

CTAMP2F

Bit 1: Clear TAMP2 detection flag Writing 1 in this bit clears the TAMP2F bit in the TAMP_SR register..

CTAMP3F

Bit 2: Clear TAMP3 detection flag Writing 1 in this bit clears the TAMP3F bit in the TAMP_SR register..

CTAMP4F

Bit 3: Clear TAMP4 detection flag Writing 1 in this bit clears the TAMP4F bit in the TAMP_SR register..

CTAMP5F

Bit 4: Clear TAMP5 detection flag Writing 1 in this bit clears the TAMP5F bit in the TAMP_SR register..

CITAMP3F

Bit 18: Clear ITAMP3 detection flag Writing 1 in this bit clears the ITAMP3F bit in the TAMP_SR register..

CITAMP4F

Bit 19: Clear ITAMP4 detection flag Writing 1 in this bit clears the ITAMP4F bit in the TAMP_SR register..

CITAMP5F

Bit 20: Clear ITAMP5 detection flag Writing 1 in this bit clears the ITAMP5F bit in the TAMP_SR register..

CITAMP6F

Bit 21: Clear ITAMP6 detection flag Writing 1 in this bit clears the ITAMP6F bit in the TAMP_SR register..

TAMP_BKP0R

TAMP backup 0 register

Offset: 0x100, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BKP
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BKP
rw
Toggle fields

BKP

Bits 0-31: The application can write or read data to and from these registers. In the default (ERASE) configuration this register is reset on a tamper detection event. It is forced to reset value as long as there is at least one internal or external tamper flag being set. This register is also reset when the readout protection (RDP) is disabled..

TAMP_BKP1R

TAMP backup 1 register

Offset: 0x104, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BKP
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BKP
rw
Toggle fields

BKP

Bits 0-31: The application can write or read data to and from these registers. In the default (ERASE) configuration this register is reset on a tamper detection event. It is forced to reset value as long as there is at least one internal or external tamper flag being set. This register is also reset when the readout protection (RDP) is disabled..

TAMP_BKP2R

TAMP backup 2 register

Offset: 0x108, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BKP
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BKP
rw
Toggle fields

BKP

Bits 0-31: The application can write or read data to and from these registers. In the default (ERASE) configuration this register is reset on a tamper detection event. It is forced to reset value as long as there is at least one internal or external tamper flag being set. This register is also reset when the readout protection (RDP) is disabled..

TAMP_BKP3R

TAMP backup 3 register

Offset: 0x10c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BKP
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BKP
rw
Toggle fields

BKP

Bits 0-31: The application can write or read data to and from these registers. In the default (ERASE) configuration this register is reset on a tamper detection event. It is forced to reset value as long as there is at least one internal or external tamper flag being set. This register is also reset when the readout protection (RDP) is disabled..

TAMP_BKP4R

TAMP backup 4 register

Offset: 0x110, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BKP
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BKP
rw
Toggle fields

BKP

Bits 0-31: The application can write or read data to and from these registers. In the default (ERASE) configuration this register is reset on a tamper detection event. It is forced to reset value as long as there is at least one internal or external tamper flag being set. This register is also reset when the readout protection (RDP) is disabled..

TAMP_BKP5R

TAMP backup 5 register

Offset: 0x114, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BKP
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BKP
rw
Toggle fields

BKP

Bits 0-31: The application can write or read data to and from these registers. In the default (ERASE) configuration this register is reset on a tamper detection event. It is forced to reset value as long as there is at least one internal or external tamper flag being set. This register is also reset when the readout protection (RDP) is disabled..

TAMP_BKP6R

TAMP backup 6 register

Offset: 0x118, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BKP
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BKP
rw
Toggle fields

BKP

Bits 0-31: The application can write or read data to and from these registers. In the default (ERASE) configuration this register is reset on a tamper detection event. It is forced to reset value as long as there is at least one internal or external tamper flag being set. This register is also reset when the readout protection (RDP) is disabled..

TAMP_BKP7R

TAMP backup 7 register

Offset: 0x11c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BKP
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BKP
rw
Toggle fields

BKP

Bits 0-31: The application can write or read data to and from these registers. In the default (ERASE) configuration this register is reset on a tamper detection event. It is forced to reset value as long as there is at least one internal or external tamper flag being set. This register is also reset when the readout protection (RDP) is disabled..

TAMP_BKP8R

TAMP backup 8 register

Offset: 0x120, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BKP
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BKP
rw
Toggle fields

BKP

Bits 0-31: The application can write or read data to and from these registers. In the default (ERASE) configuration this register is reset on a tamper detection event. It is forced to reset value as long as there is at least one internal or external tamper flag being set. This register is also reset when the readout protection (RDP) is disabled..

TIM1

0x40012c00: TIM1 address block description

1/190 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 (16-bit) TIM1_CR1
0x4 TIM1_CR2
0x8 TIM1_SMCR
0xc (16-bit) TIM1_DIER
0x10 TIM1_SR
0x14 (16-bit) TIM1_EGR
0x18 TIM1_CCMR1_INPUT
0x18 TIM1_CCMR1_OUTPUT
0x1c TIM1_CCMR2_INPUT
0x1c TIM1_CCMR2_OUTPUT
0x20 TIM1_CCER
0x24 TIM1_CNT
0x28 (16-bit) TIM1_PSC
0x2c (16-bit) TIM1_ARR
0x30 (16-bit) TIM1_RCR
0x34 (16-bit) TIM1_CCR1
0x38 (16-bit) TIM1_CCR2
0x3c (16-bit) TIM1_CCR3
0x40 (16-bit) TIM1_CCR4
0x44 TIM1_BDTR
0x48 (16-bit) TIM1_DCR
0x4c TIM1_DMAR
0x50 TIM1_OR1
0x54 TIM1_CCMR3
0x58 TIM1_CCR5
0x5c (16-bit) TIM1_CCR6
0x60 TIM1_AF1
0x64 TIM1_AF2
0x68 TIM1_TISEL
Toggle registers

TIM1_CR1

TIM1 control register 1

Offset: 0x0, size: 16, reset: 0x00000000, access: Unspecified

0/9 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UIFREMAP
rw
CKD
rw
ARPE
rw
CMS
rw
DIR
rw
OPM
rw
URS
rw
UDIS
rw
CEN
rw
Toggle fields

CEN

Bit 0: Counter enable Note: External clock, gated mode and encoder mode can work only if the CEN bit has been previously set by software. However trigger mode can set the CEN bit automatically by hardware..

UDIS

Bit 1: Update disable This bit is set and cleared by software to enable/disable UEV event generation. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller Buffered registers are then loaded with their preload values..

URS

Bit 2: Update request source This bit is set and cleared by software to select the UEV event sources. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller.

OPM

Bit 3: One pulse mode.

DIR

Bit 4: Direction Note: This bit is read only when the timer is configured in Center-aligned mode or Encoder mode..

CMS

Bits 5-6: Center-aligned mode selection Note: Switch from edge-aligned mode to center-aligned mode as long as the counter is enabled (CEN=1) is not allowed.

ARPE

Bit 7: Auto-reload preload enable.

CKD

Bits 8-9: Clock division This bit-field indicates the division ratio between the timer clock (CK_INT) frequency and the dead-time and sampling clock (t<sub>DTS</sub>)used by the dead-time generators and the digital filters (ETR, TIx): Note: t<sub>DTS</sub> = 1/f<sub>DTS</sub>, t<sub>CK_INT</sub> = 1/f<sub>CK_INT</sub>..

UIFREMAP

Bit 11: UIF status bit remapping.

TIM1_CR2

TIM1 control register 2

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/15 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MMS2
rw
OIS6
rw
OIS5
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OIS4
rw
OIS3N
rw
OIS3
rw
OIS2N
rw
OIS2
rw
OIS1N
rw
OIS1
rw
TI1S
rw
MMS
rw
CCDS
rw
CCUS
rw
CCPC
rw
Toggle fields

CCPC

Bit 0: Capture/compare preloaded control Note: This bit acts only on channels that have a complementary output..

CCUS

Bit 2: Capture/compare control update selection Note: This bit acts only on channels that have a complementary output..

CCDS

Bit 3: Capture/compare DMA selection.

MMS

Bits 4-6: Master mode selection These bits allow selected information to be sent in master mode to slave timers for synchronization (TRGO). The combination is as follows: Note: The clock of the slave timer or ADC must be enabled prior to receive events from the master timer, and must not be changed on-the-fly while triggers are received from the master timer..

TI1S

Bit 7: TI1 selection.

OIS1

Bit 8: Output Idle state 1 (OC1 output) Note: This bit can not be modified as long as LOCK level 1, 2 or 3 has been programmed (LOCK bits in TIMx_BDTR register)..

OIS1N

Bit 9: Output Idle state 1 (OC1N output) Note: This bit can not be modified as long as LOCK level 1, 2 or 3 has been programmed (LOCK bits in TIMx_BDTR register)..

OIS2

Bit 10: Output Idle state 2 (OC2 output) Refer to OIS1 bit.

OIS2N

Bit 11: Output Idle state 2 (OC2N output) Refer to OIS1N bit.

OIS3

Bit 12: Output Idle state 3 (OC3 output) Refer to OIS1 bit.

OIS3N

Bit 13: Output Idle state 3 (OC3N output) Refer to OIS1N bit.

OIS4

Bit 14: Output Idle state 4 (OC4 output) Refer to OIS1 bit.

OIS5

Bit 16: Output Idle state 5 (OC5 output) Refer to OIS1 bit.

OIS6

Bit 18: Output Idle state 6 (OC6 output) Refer to OIS1 bit.

MMS2

Bits 20-23: Master mode selection 2 These bits allow the information to be sent to ADC for synchronization (TRGO2) to be selected. The combination is as follows: Note: The clock of the slave timer or ADC must be enabled prior to receive events from the master timer, and must not be changed on-the-fly while triggers are received from the master timer..

TIM1_SMCR

TIM1 slave mode control register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/10 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TS_1
rw
SMS_1
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ETP
rw
ECE
rw
ETPS
rw
ETF
rw
MSM
rw
TS
rw
OCCS
rw
SMS
rw
Toggle fields

SMS

Bits 0-2: SMS[0]: Slave mode selection When external signals are selected the active edge of the trigger signal (TRGI) is linked to the polarity selected on the external input (see Input Control register and Control Register description. Codes above 1000: Reserved. Note: The gated mode must not be used if TI1F_ED is selected as the trigger input (TS=00100). Indeed, TI1F_ED outputs 1 pulse for each transition on TI1F, whereas the gated mode checks the level of the trigger signal. Note: The clock of the slave peripherals (timer, ADC, ...) receiving the TRGO or the TRGO2 signals must be enabled prior to receive events from the master timer, and the clock frequency (prescaler) must not be changed on-the-fly while triggers are received from the master timer..

OCCS

Bit 3: OCREF clear selection This bit is used to select the OCREF clear source..

TS

Bits 4-6: TS[0]: Trigger selection This bit-field selects the trigger input to be used to synchronize the counter. Others: Reserved See Table1118: TIM1 internal trigger connection on page1561 for more details on ITRx meaning for each Timer. Note: These bits must be changed only when they are not used (e.g. when SMS=000) to avoid wrong edge detections at the transition..

MSM

Bit 7: Master/slave mode.

ETF

Bits 8-11: External trigger filter This bit-field then defines the frequency used to sample ETRP signal and the length of the digital filter applied to ETRP. The digital filter is made of an event counter in which N consecutive events are needed to validate a transition on the output:.

ETPS

Bits 12-13: External trigger prescaler External trigger signal ETRP frequency must be at most 1/4 of f<sub>CK_INT</sub> frequency. A prescaler can be enabled to reduce ETRP frequency. It is useful when inputting fast external clocks..

ECE

Bit 14: External clock enable This bit enables External clock mode 2. Note: Setting the ECE bit has the same effect as selecting external clock mode 1 with TRGI connected to ETRF (SMS=111 and TS=00111). It is possible to simultaneously use external clock mode 2 with the following slave modes: reset mode, gated mode and trigger mode. Nevertheless, TRGI must not be connected to ETRF in this case (TS bits must not be 00111). Note: If external clock mode 1 and external clock mode 2 are enabled at the same time, the external clock input is ETRF..

ETP

Bit 15: External trigger polarity This bit selects whether ETR or ETR is used for trigger operations.

SMS_1

Bit 16: SMS[3].

TS_1

Bits 20-21: TS[4:3].

TIM1_DIER

TIM1 DMA/interrupt enable register

Offset: 0xc, size: 16, reset: 0x00000000, access: Unspecified

0/15 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TDE
rw
COMDE
rw
CC4DE
rw
CC3DE
rw
CC2DE
rw
CC1DE
rw
UDE
rw
BIE
rw
TIE
rw
COMIE
rw
CC4IE
rw
CC3IE
rw
CC2IE
rw
CC1IE
rw
UIE
rw
Toggle fields

UIE

Bit 0: Update interrupt enable.

CC1IE

Bit 1: Capture/Compare 1 interrupt enable.

CC2IE

Bit 2: Capture/Compare 2 interrupt enable.

CC3IE

Bit 3: Capture/Compare 3 interrupt enable.

CC4IE

Bit 4: Capture/Compare 4 interrupt enable.

COMIE

Bit 5: COM interrupt enable.

TIE

Bit 6: Trigger interrupt enable.

BIE

Bit 7: Break interrupt enable.

UDE

Bit 8: Update DMA request enable.

CC1DE

Bit 9: Capture/Compare 1 DMA request enable.

CC2DE

Bit 10: Capture/Compare 2 DMA request enable.

CC3DE

Bit 11: Capture/Compare 3 DMA request enable.

CC4DE

Bit 12: Capture/Compare 4 DMA request enable.

COMDE

Bit 13: COM DMA request enable.

TDE

Bit 14: Trigger DMA request enable.

TIM1_SR

TIM1 status register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CC6IF
rw
CC5IF
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SBIF
rw
CC4OF
rw
CC3OF
rw
CC2OF
rw
CC1OF
rw
B2IF
rw
BIF
rw
TIF
rw
COMIF
rw
CC4IF
rw
CC3IF
rw
CC2IF
rw
CC1IF
rw
UIF
rw
Toggle fields

UIF

Bit 0: Update interrupt flag This bit is set by hardware on an update event. It is cleared by software. At overflow or underflow regarding the repetition counter value (update if repetition counter = 0) and if the UDIS=0 in the TIMx_CR1 register. When CNT is reinitialized by software using the UG bit in TIMx_EGR register, if URS=0 and UDIS=0 in the TIMx_CR1 register. When CNT is reinitialized by a trigger event (refer to Section122.4.3: TIM1 slave mode control register (TIM1_SMCR)), if URS=0 and UDIS=0 in the TIMx_CR1 register..

CC1IF

Bit 1: Capture/Compare 1 interrupt flag This flag is set by hardware. It is cleared by software (input capture or output compare mode) or by reading the TIMx_CCR1 register (input capture mode only). If channel CC1 is configured as output: this flag is set when the content of the counter TIMx_CNT matches the content of the TIMx_CCR1 register. When the content of TIMx_CCR1 is greater than the content of TIMx_ARR, the CC1IF bit goes high on the counter overflow (in up-counting and up/down-counting modes) or underflow (in down-counting mode). There are 3 possible options for flag setting in center-aligned mode, refer to the CMS bits in the TIMx_CR1 register for the full description. If channel CC1 is configured as input: this bit is set when counter value has been captured in TIMx_CCR1 register (an edge has been detected on IC1, as per the edge sensitivity defined with the CC1P and CC1NP bits setting, in TIMx_CCER)..

CC2IF

Bit 2: Capture/Compare 2 interrupt flag Refer to CC1IF description.

CC3IF

Bit 3: Capture/Compare 3 interrupt flag Refer to CC1IF description.

CC4IF

Bit 4: Capture/Compare 4 interrupt flag Refer to CC1IF description.

COMIF

Bit 5: COM interrupt flag This flag is set by hardware on COM event (when Capture/compare Control bits - CCxE, CCxNE, OCxM - have been updated). It is cleared by software..

TIF

Bit 6: Trigger interrupt flag This flag is set by hardware on the TRG trigger event (active edge detected on TRGI input when the slave mode controller is enabled in all modes but gated mode. It is set when the counter starts or stops when gated mode is selected. It is cleared by software..

BIF

Bit 7: Break interrupt flag This flag is set by hardware as soon as the break input goes active. It can be cleared by software if the break input is not active..

B2IF

Bit 8: Break 2 interrupt flag This flag is set by hardware as soon as the break 2 input goes active. It can be cleared by software if the break 2 input is not active..

CC1OF

Bit 9: Capture/Compare 1 overcapture flag This flag is set by hardware only when the corresponding channel is configured in input capture mode. It is cleared by software by writing it to 0..

CC2OF

Bit 10: Capture/Compare 2 overcapture flag Refer to CC1OF description.

CC3OF

Bit 11: Capture/Compare 3 overcapture flag Refer to CC1OF description.

CC4OF

Bit 12: Capture/Compare 4 overcapture flag Refer to CC1OF description.

SBIF

Bit 13: System Break interrupt flag This flag is set by hardware as soon as the system break input goes active. It can be cleared by software if the system break input is not active. This flag must be reset to re-start PWM operation..

CC5IF

Bit 16: Compare 5 interrupt flag Refer to CC1IF description (Note: Channel 5 can only be configured as output).

CC6IF

Bit 17: Compare 6 interrupt flag Refer to CC1IF description (Note: Channel 6 can only be configured as output).

TIM1_EGR

TIM1 event generation register

Offset: 0x14, size: 16, reset: 0x00000000, access: Unspecified

0/9 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
B2G
w
BG
w
TG
w
COMG
w
CC4G
w
CC3G
w
CC2G
w
CC1G
w
UG
w
Toggle fields

UG

Bit 0: Update generation This bit can be set by software, it is automatically cleared by hardware..

CC1G

Bit 1: Capture/Compare 1 generation This bit is set by software in order to generate an event, it is automatically cleared by hardware. If channel CC1 is configured as output: CC1IF flag is set, Corresponding interrupt or DMA request is sent if enabled. If channel CC1 is configured as input: The current value of the counter is captured in TIMx_CCR1 register. The CC1IF flag is set, the corresponding interrupt or DMA request is sent if enabled. The CC1OF flag is set if the CC1IF flag was already high..

CC2G

Bit 2: Capture/Compare 2 generation Refer to CC1G description.

CC3G

Bit 3: Capture/Compare 3 generation Refer to CC1G description.

CC4G

Bit 4: Capture/Compare 4 generation Refer to CC1G description.

COMG

Bit 5: Capture/Compare control update generation This bit can be set by software, it is automatically cleared by hardware Note: This bit acts only on channels having a complementary output..

TG

Bit 6: Trigger generation This bit is set by software in order to generate an event, it is automatically cleared by hardware..

BG

Bit 7: Break generation This bit is set by software in order to generate an event, it is automatically cleared by hardware..

B2G

Bit 8: Break 2 generation This bit is set by software in order to generate an event, it is automatically cleared by hardware..

TIM1_CCMR1_INPUT

TIM1 capture/compare mode register 1

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IC2F
rw
IC2PSC
rw
CC2S
rw
IC1F
rw
IC1PSC
rw
CC1S
rw
Toggle fields

CC1S

Bits 0-1: Capture/Compare 1 Selection This bit-field defines the direction of the channel (input/output) as well as the used input. Note: CC1S bits are writable only when the channel is OFF (CC1E = 0 in TIMx_CCER)..

IC1PSC

Bits 2-3: Input capture 1 prescaler This bit-field defines the ratio of the prescaler acting on CC1 input (IC1). The prescaler is reset as soon as CC1E=0 (TIMx_CCER register)..

IC1F

Bits 4-7: Input capture 1 filter This bit-field defines the frequency used to sample TI1 input and the length of the digital filter applied to TI1. The digital filter is made of an event counter in which N consecutive events are needed to validate a transition on the output:.

CC2S

Bits 8-9: Capture/Compare 2 selection This bit-field defines the direction of the channel (input/output) as well as the used input. Note: CC2S bits are writable only when the channel is OFF (CC2E = 0 in TIMx_CCER)..

IC2PSC

Bits 10-11: Input capture 2 prescaler Refer to IC1PSC[1:0] description..

IC2F

Bits 12-15: Input capture 2 filter Refer to IC1F[3:0] description..

TIM1_CCMR1_OUTPUT

TIM1 capture/compare mode register 1

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OC2M_1
rw
OC1M_1
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OC2CE
rw
OC2M
rw
OC2PE
rw
OC2FE
rw
CC2S
rw
OC1CE
rw
OC1M
rw
OC1PE
rw
OC1FE
rw
CC1S
rw
Toggle fields

CC1S

Bits 0-1: Capture/Compare 1 selection This bit-field defines the direction of the channel (input/output) as well as the used input. Note: CC1S bits are writable only when the channel is OFF (CC1E = 0 in TIMx_CCER)..

OC1FE

Bit 2: Output Compare 1 fast enable This bit decreases the latency between a trigger event and a transition on the timer output. It must be used in one-pulse mode (OPM bit set in TIMx_CR1 register), to have the output pulse starting as soon as possible after the starting trigger..

OC1PE

Bit 3: Output Compare 1 preload enable Note: These bits can not be modified as long as LOCK level 3 has been programmed (LOCK bits in TIMx_BDTR register) and CC1S=00 (the channel is configured in output)..

OC1M

Bits 4-6: OC1M[2:0]: Output Compare 1 mode These bits define the behavior of the output reference signal OC1REF from which OC1 and OC1N are derived. OC1REF is active high whereas OC1 and OC1N active level depends on CC1P and CC1NP bits. Note: These bits can not be modified as long as LOCK level 3 has been programmed (LOCK bits in TIMx_BDTR register) and CC1S=00 (the channel is configured in output). Note: In PWM mode, the OCREF level changes only when the result of the comparison changes or when the output compare mode switches from frozen mode to PWM mode. Note: On channels having a complementary output, this bit field is preloaded. If the CCPC bit is set in the TIMx_CR2 register then the OC1M active bits take the new value from the preloaded bits only when a COM event is generated. Note: The OC1M[3] bit is not contiguous, located in bit 16..

OC1CE

Bit 7: Output Compare 1 clear enable.

CC2S

Bits 8-9: Capture/Compare 2 selection This bit-field defines the direction of the channel (input/output) as well as the used input. Note: CC2S bits are writable only when the channel is OFF (CC2E = 0 in TIMx_CCER)..

OC2FE

Bit 10: Output Compare 2 fast enable Refer to OC1FE description..

OC2PE

Bit 11: Output Compare 2 preload enable Refer to OC1PE description..

OC2M

Bits 12-14: OC2M[2:0]: Output Compare 2 mode Refer to OC1M[3:0] description..

OC2CE

Bit 15: Output Compare 2 clear enable Refer to OC1CE description..

OC1M_1

Bit 16: OC1M[3].

OC2M_1

Bit 24: OC2M[3].

TIM1_CCMR2_INPUT

TIM1 capture/compare mode register 2

Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IC4F
rw
IC4PSC
rw
CC4S
rw
IC3F
rw
IC3PSC
rw
CC3S
rw
Toggle fields

CC3S

Bits 0-1: Capture/compare 3 selection This bit-field defines the direction of the channel (input/output) as well as the used input. Note: CC3S bits are writable only when the channel is OFF (CC3E = 0 in TIMx_CCER)..

IC3PSC

Bits 2-3: Input capture 3 prescaler Refer to IC1PSC[1:0] description..

IC3F

Bits 4-7: Input capture 3 filter Refer to IC1F[3:0] description..

CC4S

Bits 8-9: Capture/Compare 4 selection This bit-field defines the direction of the channel (input/output) as well as the used input. Note: CC4S bits are writable only when the channel is OFF (CC4E = 0 in TIMx_CCER)..

IC4PSC

Bits 10-11: Input capture 4 prescaler Refer to IC1PSC[1:0] description..

IC4F

Bits 12-15: Input capture 4 filter Refer to IC1F[3:0] description..

TIM1_CCMR2_OUTPUT

TIM1 capture/compare mode register 1

Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OC4M_1
rw
OC3M_1
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OC4CE
rw
OC4M
rw
OC4PE
rw
OC4FE
rw
CC4S
rw
OC3CE
rw
OC3M
rw
OC3PE
rw
OC3FE
rw
CC3S
rw
Toggle fields

CC3S

Bits 0-1: Capture/Compare 3 selection This bit-field defines the direction of the channel (input/output) as well as the used input. Note: CC3S bits are writable only when the channel is OFF (CC3E = 0 in TIMx_CCER)..

OC3FE

Bit 2: Output compare 3 fast enable Refer to OC1FE description..

OC3PE

Bit 3: Output compare 3 preload enable Refer to OC1PE description..

OC3M

Bits 4-6: OC3M[2:0]: Output compare 3 mode Refer to OC1M[3:0] description..

OC3CE

Bit 7: Output compare 3 clear enable Refer to OC1CE description..

CC4S

Bits 8-9: Capture/Compare 4 selection This bit-field defines the direction of the channel (input/output) as well as the used input. Note: CC4S bits are writable only when the channel is OFF (CC4E = 0 in TIMx_CCER)..

OC4FE

Bit 10: Output compare 4 fast enable Refer to OC1FE description..

OC4PE

Bit 11: Output compare 4 preload enable Refer to OC1PE description..

OC4M

Bits 12-14: OC4M[2:0]: Output compare 4 mode Refer to OC3M[3:0] description..

OC4CE

Bit 15: Output compare 4 clear enable Refer to OC1CE description..

OC3M_1

Bit 16: OC3M[3].

OC4M_1

Bit 24: OC4M[3].

TIM1_CCER

TIM1 capture/compare enable register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/19 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CC6P
rw
CC6E
rw
CC5P
rw
CC5E
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC4NP
rw
CC4P
rw
CC4E
rw
CC3NP
rw
CC3NE
rw
CC3P
rw
CC3E
rw
CC2NP
rw
CC2NE
rw
CC2P
rw
CC2E
rw
CC1NP
rw
CC1NE
rw
CC1P
rw
CC1E
rw
Toggle fields

CC1E

Bit 0: Capture/Compare 1 output enable When CC1 channel is configured as output, the OC1 level depends on MOE, OSSI, OSSR, OIS1, OIS1N and CC1NE bits, regardless of the CC1E bits state. Refer to Table1119 for details. Note: On channels having a complementary output, this bit is preloaded. If the CCPC bit is set in the TIMx_CR2 register then the CC1E active bit takes the new value from the preloaded bit only when a Commutation event is generated..

CC1P

Bit 1: Capture/Compare 1 output polarity When CC1 channel is configured as input, both CC1NP/CC1P bits select the active polarity of TI1FP1 and TI2FP1 for trigger or capture operations. CC1NP=0, CC1P=0: non-inverted/rising edge. The circuit is sensitive to TIxFP1 rising edge (capture or trigger operations in reset, external clock or trigger mode), TIxFP1 is not inverted (trigger operation in gated mode or encoder mode). CC1NP=0, CC1P=1: inverted/falling edge. The circuit is sensitive to TIxFP1 falling edge (capture or trigger operations in reset, external clock or trigger mode), TIxFP1 is inverted (trigger operation in gated mode or encoder mode). CC1NP=1, CC1P=1: non-inverted/both edges/ The circuit is sensitive to both TIxFP1 rising and falling edges (capture or trigger operations in reset, external clock or trigger mode), TIxFP1is not inverted (trigger operation in gated mode). This configuration must not be used in encoder mode. CC1NP=1, CC1P=0: The configuration is reserved, it must not be used. Note: This bit is not writable as soon as LOCK level 2 or 3 has been programmed (LOCK bits in TIMx_BDTR register). Note: On channels having a complementary output, this bit is preloaded. If the CCPC bit is set in the TIMx_CR2 register then the CC1P active bit takes the new value from the preloaded bit only when a Commutation event is generated..

CC1NE

Bit 2: Capture/Compare 1 complementary output enable On channels having a complementary output, this bit is preloaded. If the CCPC bit is set in the TIMx_CR2 register then the CC1NE active bit takes the new value from the preloaded bit only when a Commutation event is generated..

CC1NP

Bit 3: Capture/Compare 1 complementary output polarity CC1 channel configured as output: CC1 channel configured as input: This bit is used in conjunction with CC1P to define the polarity of TI1FP1 and TI2FP1. Refer to CC1P description. Note: This bit is not writable as soon as LOCK level 2 or 3 has been programmed (LOCK bits in TIMx_BDTR register) and CC1S=00 (channel configured as output). On channels having a complementary output, this bit is preloaded. If the CCPC bit is set in the TIMx_CR2 register then the CC1NP active bit takes the new value from the preloaded bit only when a Commutation event is generated..

CC2E

Bit 4: Capture/Compare 2 output enable Refer to CC1E description.

CC2P

Bit 5: Capture/Compare 2 output polarity Refer to CC1P description.

CC2NE

Bit 6: Capture/Compare 2 complementary output enable Refer to CC1NE description.

CC2NP

Bit 7: Capture/Compare 2 complementary output polarity Refer to CC1NP description.

CC3E

Bit 8: Capture/Compare 3 output enable Refer to CC1E description.

CC3P

Bit 9: Capture/Compare 3 output polarity Refer to CC1P description.

CC3NE

Bit 10: Capture/Compare 3 complementary output enable Refer to CC1NE description.

CC3NP

Bit 11: Capture/Compare 3 complementary output polarity Refer to CC1NP description.

CC4E

Bit 12: Capture/Compare 4 output enable Refer to CC1E description.

CC4P

Bit 13: Capture/Compare 4 output polarity Refer to CC1P description.

CC4NP

Bit 15: Capture/Compare 4 complementary output polarity Refer to CC1NP description.

CC5E

Bit 16: Capture/Compare 5 output enable Refer to CC1E description.

CC5P

Bit 17: Capture/Compare 5 output polarity Refer to CC1P description.

CC6E

Bit 20: Capture/Compare 6 output enable Refer to CC1E description.

CC6P

Bit 21: Capture/Compare 6 output polarity Refer to CC1P description.

TIM1_CNT

TIM1 counter

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

1/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
UIFCPY
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CNT
rw
Toggle fields

CNT

Bits 0-15: Counter value.

UIFCPY

Bit 31: UIF copy This bit is a read-only copy of the UIF bit of the TIMx_ISR register. If the UIFREMAP bit in the TIMxCR1 is reset, bit 31 is reserved and read at 0..

TIM1_PSC

TIM1 prescaler

Offset: 0x28, size: 16, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PSC
rw
Toggle fields

PSC

Bits 0-15: Prescaler value The counter clock frequency (CK_CNT) is equal to f<sub>CK_PSC</sub> / (PSC[15:0] + 1). PSC contains the value to be loaded in the active prescaler register at each update event (including when the counter is cleared through UG bit of TIMx_EGR register or through trigger controller when configured in reset mode)..

TIM1_ARR

TIM1 auto-reload register

Offset: 0x2c, size: 16, reset: 0x0000FFFF, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ARR
rw
Toggle fields

ARR

Bits 0-15: Auto-reload value ARR is the value to be loaded in the actual auto-reload register. Refer to the Section122.3.1: Time-base unit on page1497 for more details about ARR update and behavior. The counter is blocked while the auto-reload value is null..

TIM1_RCR

TIM1 repetition counter register

Offset: 0x30, size: 16, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
REP
rw
Toggle fields

REP

Bits 0-15: Repetition counter value These bits allow the user to set-up the update rate of the compare registers (i.e. periodic transfers from preload to active registers) when preload registers are enable, as well as the update interrupt generation rate, if this interrupt is enable. Each time the REP_CNT related downcounter reaches zero, an update event is generated and it restarts counting from REP value. As REP_CNT is reloaded with REP value only at the repetition update event U_RC, any write to the TIMx_RCR register is not taken in account until the next repetition update event. It means in PWM mode (REP+1) corresponds to: the number of PWM periods in edge-aligned mode the number of half PWM period in center-aligned mode..

TIM1_CCR1

TIM1 capture/compare register 1

Offset: 0x34, size: 16, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR1
rw
Toggle fields

CCR1

Bits 0-15: Capture/Compare 1 value If channel CC1 is configured as output: CCR1 is the value to be loaded in the actual capture/compare 1 register (preload value). It is loaded permanently if the preload feature is not selected in the TIMx_CCMR1 register (bit OC1PE). Else the preload value is copied in the active capture/compare 1 register when an update event occurs. The active capture/compare register contains the value to be compared to the counter TIMx_CNT and signaled on OC1 output. If channel CC1 is configured as input: CR1 is the counter value transferred by the last input capture 1 event (IC1). The TIMx_CCR1 register is read-only and cannot be programmed..

TIM1_CCR2

TIM1 capture/compare register 2

Offset: 0x38, size: 16, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR2
rw
Toggle fields

CCR2

Bits 0-15: Capture/Compare 2 value If channel CC2 is configured as output: CCR2 is the value to be loaded in the actual capture/compare 2 register (preload value). It is loaded permanently if the preload feature is not selected in the TIMx_CCMR1 register (bit OC2PE). Else the preload value is copied in the active capture/compare 2 register when an update event occurs. The active capture/compare register contains the value to be compared to the counter TIMx_CNT and signaled on OC2 output. If channel CC2 is configured as input: CCR2 is the counter value transferred by the last input capture 2 event (IC2). The TIMx_CCR2 register is read-only and cannot be programmed..

TIM1_CCR3

TIM1 capture/compare register 3

Offset: 0x3c, size: 16, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR3
rw
Toggle fields

CCR3

Bits 0-15: Capture/Compare value If channel CC3 is configured as output: CCR3 is the value to be loaded in the actual capture/compare 3 register (preload value). It is loaded permanently if the preload feature is not selected in the TIMx_CCMR2 register (bit OC3PE). Else the preload value is copied in the active capture/compare 3 register when an update event occurs. The active capture/compare register contains the value to be compared to the counter TIMx_CNT and signalled on OC3 output. If channel CC3 is configured as input: CCR3 is the counter value transferred by the last input capture 3 event (IC3). The TIMx_CCR3 register is read-only and cannot be programmed..

TIM1_CCR4

TIM1 capture/compare register 4

Offset: 0x40, size: 16, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR4
rw
Toggle fields

CCR4

Bits 0-15: Capture/Compare value If channel CC4 is configured as output: CCR4 is the value to be loaded in the actual capture/compare 4 register (preload value). It is loaded permanently if the preload feature is not selected in the TIMx_CCMR2 register (bit OC4PE). Else the preload value is copied in the active capture/compare 4 register when an update event occurs. The active capture/compare register contains the value to be compared to the counter TIMx_CNT and signalled on OC4 output. If channel CC4 is configured as input: CCR4 is the counter value transferred by the last input capture 4 event (IC4). The TIMx_CCR4 register is read-only and cannot be programmed..

TIM1_BDTR

TIM1 break and dead-time register

Offset: 0x44, size: 32, reset: 0x00000000, access: Unspecified

0/16 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BK2BID
rw
BKBID
rw
BK2DSRM
rw
BKDSRM
rw
BK2P
rw
BK2E
rw
BK2F
rw
BKF
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MOE
rw
AOE
rw
BKP
rw
BKE
rw
OSSR
rw
OSSI
rw
LOCK
rw
DTG
rw
Toggle fields

DTG

Bits 0-7: Dead-time generator setup.

LOCK

Bits 8-9: Lock configuration These bits offer a write protection against software errors. Note: The LOCK bits can be written only once after the reset. Once the TIMx_BDTR register has been written, their content is frozen until the next reset..

OSSI

Bit 10: Off-state selection for Idle mode This bit is used when MOE=0 due to a break event or by a software write, on channels configured as outputs. See OC/OCN enable description for more details (Section122.4.11: TIM1 capture/compare enable register (TIM1_CCER)). Note: This bit can not be modified as soon as the LOCK level 2 has been programmed (LOCK bits in TIMx_BDTR register)..

OSSR

Bit 11: Off-state selection for Run mode This bit is used when MOE=1 on channels having a complementary output which are configured as outputs. OSSR is not implemented if no complementary output is implemented in the timer. See OC/OCN enable description for more details (Section122.4.11: TIM1 capture/compare enable register (TIM1_CCER)). Note: This bit can not be modified as soon as the LOCK level 2 has been programmed (LOCK bits in TIMx_BDTR register)..

BKE

Bit 12: Break enable This bit enables the complete break protection (including all sources connected to bk_acth and BRK sources, as per Figure1152: Break and Break2 circuitry overview). Note: This bit cannot be modified when LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Note: Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..

BKP

Bit 13: Break polarity Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Note: Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..

AOE

Bit 14: Automatic output enable Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..

MOE

Bit 15: Main output enable This bit is cleared asynchronously by hardware as soon as one of the break inputs is active (BRK or BRK2). It is set by software or automatically depending on the AOE bit. It is acting only on the channels which are configured in output. In response to a break event or if MOE is written to 0: OC and OCN outputs are disabled or forced to idle state depending on the OSSI bit. See OC/OCN enable description for more details (Section122.4.11: TIM1 capture/compare enable register (TIM1_CCER))..

BKF

Bits 16-19: Break filter This bit-field defines the frequency used to sample BRK input and the length of the digital filter applied to BRK. The digital filter is made of an event counter in which N consecutive events are needed to validate a transition on the output: Note: This bit cannot be modified when LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..

BK2F

Bits 20-23: Break 2 filter This bit-field defines the frequency used to sample BRK2 input and the length of the digital filter applied to BRK2. The digital filter is made of an event counter in which N consecutive events are needed to validate a transition on the output: Note: This bit cannot be modified when LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..

BK2E

Bit 24: Break 2 enable Note: The BRK2 must only be used with OSSR = OSSI = 1. Note: This bit cannot be modified when LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Note: Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..

BK2P

Bit 25: Break 2 polarity Note: This bit cannot be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Note: Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..

BKDSRM

Bit 26: Break Disarm This bit is cleared by hardware when no break source is active. The BKDSRM bit must be set by software to release the bidirectional output control (open-drain output in Hi-Z state) and then be polled it until it is reset by hardware, indicating that the fault condition has disappeared. Note: Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..

BK2DSRM

Bit 27: Break2 Disarm Refer to BKDSRM description.

BKBID

Bit 28: Break Bidirectional In the bidirectional mode (BKBID bit set to 1), the break input is configured both in input mode and in open drain output mode. Any active break event asserts a low logic level on the Break input to indicate an internal break event to external devices. Note: This bit cannot be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Note: Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..

BK2BID

Bit 29: Break2 bidirectional Refer to BKBID description.

TIM1_DCR

TIM1 DMA control register

Offset: 0x48, size: 16, reset: 0x00000000, access: Unspecified

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DBL
rw
DBA
rw
Toggle fields

DBA

Bits 0-4: DMA base address This 5-bits vector defines the base-address for DMA transfers (when read/write access are done through the TIMx_DMAR address). DBA is defined as an offset starting from the address of the TIMx_CR1 register. Example: ....

DBL

Bits 8-12: DMA burst length This 5-bit vector defines the length of DMA transfers (the timer recognizes a burst transfer when a read or a write access is done to the TIMx_DMAR address), i.e. the number of transfers. Transfers can be in half-words or in bytes (see example below). ... Example: Let us consider the following transfer: DBL = 7 bytes & DBA = TIMx_CR1. If DBL = 7 bytes and DBA = TIMx_CR1 represents the address of the byte to be transferred, the address of the transfer should be given by the following equation: (TIMx_CR1 address) + DBA + (DMA index), where DMA index = DBL In this example, 7 bytes are added to (TIMx_CR1 address) + DBA, which gives us the address from/to which the data is copied. In this case, the transfer is done to 7 registers starting from the following address: (TIMx_CR1 address) + DBA According to the configuration of the DMA Data Size, several cases may occur: If the DMA Data Size is configured in half-words, 16-bit data is transferred to each of the 7 registers. If the DMA Data Size is configured in bytes, the data is also transferred to 7 registers: the first register contains the first MSB byte, the second register, the first LSB byte and so on. So with the transfer Timer, one also has to specify the size of data transferred by DMA..

TIM1_DMAR

TIM1 DMA address for full transfer

Offset: 0x4c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
DMAB
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DMAB
rw
Toggle fields

DMAB

Bits 0-31: DMA register for burst accesses A read or write operation to the DMAR register accesses the register located at the address (TIMx_CR1 address) + (DBA + DMA index) x 4 where TIMx_CR1 address is the address of the control register 1, DBA is the DMA base address configured in TIMx_DCR register, DMA index is automatically controlled by the DMA transfer, and ranges from 0 to DBL (DBL configured in TIMx_DCR)..

TIM1_OR1

TIM1 option register 1

Offset: 0x50, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OCREF_CLR
rw
Toggle fields

OCREF_CLR

Bits 0-1: Ocref_clr source selection This bit selects the ocref_clr input source. Others: Reserved Note: COMP3 is available on STM32G0B1xx and STM32G0C1xx salestypes only..

TIM1_CCMR3

TIM1 capture/compare mode register 3

Offset: 0x54, size: 32, reset: 0x00000000, access: Unspecified

0/10 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OC6M_1
rw
OC5M_1
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OC6CE
rw
OC6M
rw
OC6PE
rw
OC6FE
rw
OC5CE
rw
OC5M
rw
OC5PE
rw
OC5FE
rw
Toggle fields

OC5FE

Bit 2: Output compare 5 fast enable Refer to OC1FE description..

OC5PE

Bit 3: Output compare 5 preload enable Refer to OC1PE description..

OC5M

Bits 4-6: OC5M[0]: Output compare 5 mode Refer to OC1M description..

OC5CE

Bit 7: Output compare 5 clear enable Refer to OC1CE description..

OC6FE

Bit 10: Output compare 6 fast enable Refer to OC1FE description..

OC6PE

Bit 11: Output compare 6 preload enable Refer to OC1PE description..

OC6M

Bits 12-14: OC6M[0]: Output compare 6 mode Refer to OC1M description..

OC6CE

Bit 15: Output compare 6 clear enable Refer to OC1CE description..

OC5M_1

Bit 16: OC5M[3].

OC6M_1

Bit 24: OC6M[3].

TIM1_CCR5

TIM1 capture/compare register 5

Offset: 0x58, size: 32, reset: 0x00000000, access: Unspecified

0/4 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
GC5C3
rw
GC5C2
rw
GC5C1
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR5
rw
Toggle fields

CCR5

Bits 0-15: Capture/Compare 5 value CCR5 is the value to be loaded in the actual capture/compare 5 register (preload value). It is loaded permanently if the preload feature is not selected in the TIMx_CCMR3 register (bit OC5PE). Else the preload value is copied in the active capture/compare 5 register when an update event occurs. The active capture/compare register contains the value to be compared to the counter TIMx_CNT and signaled on OC5 output..

GC5C1

Bit 29: Group Channel 5 and Channel 1 Distortion on Channel 1 output: This bit can either have immediate effect or be preloaded and taken into account after an update event (if preload feature is selected in TIMxCCMR1). Note: it is also possible to apply this distortion on combined PWM signals..

GC5C2

Bit 30: Group Channel 5 and Channel 2 Distortion on Channel 2 output: This bit can either have immediate effect or be preloaded and taken into account after an update event (if preload feature is selected in TIMxCCMR1). Note: it is also possible to apply this distortion on combined PWM signals..

GC5C3

Bit 31: Group Channel 5 and Channel 3 Distortion on Channel 3 output: This bit can either have immediate effect or be preloaded and taken into account after an update event (if preload feature is selected in TIMxCCMR2). Note: it is also possible to apply this distortion on combined PWM signals..

TIM1_CCR6

TIM1 capture/compare register 6

Offset: 0x5c, size: 16, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR6
rw
Toggle fields

CCR6

Bits 0-15: Capture/Compare 6 value CCR6 is the value to be loaded in the actual capture/compare 6 register (preload value). It is loaded permanently if the preload feature is not selected in the TIMx_CCMR3 register (bit OC6PE). Else the preload value is copied in the active capture/compare 6 register when an update event occurs. The active capture/compare register contains the value to be compared to the counter TIMx_CNT and signaled on OC6 output..

TIM1_AF1

TIM1 alternate function option register 1

Offset: 0x60, size: 32, reset: 0x00000001, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ETRSEL
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ETRSEL
rw
BKCMP2P
rw
BKCMP1P
rw
BKINP
rw
BKCMP2E
rw
BKCMP1E
rw
BKINE
rw
Toggle fields

BKINE

Bit 0: BRK BKIN input enable This bit enables the BKIN alternate function input for the timers BRK input. BKIN input is ORed with the other BRK sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..

BKCMP1E

Bit 1: BRK COMP1 enable This bit enables the COMP1 for the timers BRK input. COMP1 output is ORed with the other BRK sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..

BKCMP2E

Bit 2: BRK COMP2 enable This bit enables the COMP2 for the timers BRK input. COMP2 output is ORed with the other BRK sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..

BKINP

Bit 9: BRK BKIN input polarity This bit selects the BKIN alternate function input sensitivity. It must be programmed together with the BKP polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..

BKCMP1P

Bit 10: BRK COMP1 input polarity This bit selects the COMP1 input sensitivity. It must be programmed together with the BKP polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..

BKCMP2P

Bit 11: BRK COMP2 input polarity This bit selects the COMP2 input sensitivity. It must be programmed together with the BKP polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..

ETRSEL

Bits 14-17: ETR source selection These bits select the ETR input source. Others: Reserved Note: These bits can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..

TIM1_AF2

TIM1 Alternate function register 2

Offset: 0x64, size: 32, reset: 0x00000001, access: Unspecified

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BK2CMP2P
rw
BK2CMP1P
rw
BK2INP
rw
BK2CMP2E
rw
BK2CMP1E
rw
BK2INE
rw
Toggle fields

BK2INE

Bit 0: BRK2 BKIN input enable This bit enables the BKIN2 alternate function input for the timers BRK2 input. BKIN2 input is ORed with the other BRK2 sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..

BK2CMP1E

Bit 1: BRK2 COMP1 enable This bit enables the COMP1 for the timers BRK2 input. COMP1 output is ORed with the other BRK2 sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..

BK2CMP2E

Bit 2: BRK2 COMP2 enable This bit enables the COMP2 for the timers BRK2 input. COMP2 output is ORed with the other BRK2 sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..

BK2INP

Bit 9: BRK2 BKIN2 input polarity This bit selects the BKIN2 alternate function input sensitivity. It must be programmed together with the BK2P polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..

BK2CMP1P

Bit 10: BRK2 COMP1 input polarity This bit selects the COMP1 input sensitivity. It must be programmed together with the BK2P polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..

BK2CMP2P

Bit 11: BRK2 COMP2 input polarity This bit selects the COMP2 input sensitivity. It must be programmed together with the BK2P polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..

TIM1_TISEL

TIM1 timer input selection register

Offset: 0x68, size: 32, reset: 0x00000000, access: Unspecified

0/4 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TI4SEL
rw
TI3SEL
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TI2SEL
rw
TI1SEL
rw
Toggle fields

TI1SEL

Bits 0-3: selects TI1[0] to TI1[15] input Others: Reserved.

TI2SEL

Bits 8-11: selects TI2[0] to TI2[15] input Others: Reserved.

TI3SEL

Bits 16-19: selects TI3[0] to TI3[15] input Others: Reserved.

TI4SEL

Bits 24-27: selects TI4[0] to TI4[15] input Others: Reserved.

TIM15

0x40014000: TIM15 address block description

1/96 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 (16-bit) TIM15_CR1
0x4 (16-bit) TIM15_CR2
0x8 TIM15_SMCR
0xc (16-bit) TIM15_DIER
0x10 (16-bit) TIM15_SR
0x14 (16-bit) TIM15_EGR
0x18 TIM15_CCMR1
0x18 TIM15_CCMR1_ALTERNATE1
0x20 (16-bit) TIM15_CCER
0x24 TIM15_CNT
0x28 (16-bit) TIM15_PSC
0x2c (16-bit) TIM15_ARR
0x30 (16-bit) TIM15_RCR
0x34 (16-bit) TIM15_CCR1
0x38 (16-bit) TIM15_CCR2
0x44 TIM15_BDTR
0x48 (16-bit) TIM15_DCR
0x4c (16-bit) TIM15_DMAR
0x60 TIM15_AF1
0x68 TIM15_TISEL
Toggle registers

TIM15_CR1

TIM15 control register 1

Offset: 0x0, size: 16, reset: 0x00000000, access: read-write

0/7 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UIFREMAP
rw
CKD
rw
ARPE
rw
OPM
rw
URS
rw
UDIS
rw
CEN
rw
Toggle fields

CEN

Bit 0: Counter enable.

UDIS

Bit 1: Update disable.

URS

Bit 2: Update request source.

OPM

Bit 3: One-pulse mode.

ARPE

Bit 7: Auto-reload preload enable.

CKD

Bits 8-9: Clock division.

UIFREMAP

Bit 11: UIF status bit remapping.

TIM15_CR2

TIM15 control register 2

Offset: 0x4, size: 16, reset: 0x00000000, access: read-write

0/8 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OIS2
rw
OIS1N
rw
OIS1
rw
TI1S
rw
MMS
rw
CCDS
rw
CCUS
rw
CCPC
rw
Toggle fields

CCPC

Bit 0: Capture/compare preloaded control.

CCUS

Bit 2: Capture/compare control update selection.

CCDS

Bit 3: Capture/compare DMA selection.

MMS

Bits 4-6: Master mode selection.

TI1S

Bit 7: TI1 selection.

OIS1

Bit 8: Output Idle state 1 (OC1 output).

OIS1N

Bit 9: Output Idle state 1 (OC1N output).

OIS2

Bit 10: Output idle state 2 (OC2 output).

TIM15_SMCR

TIM15 slave mode control register

Offset: 0x8, size: 32, reset: 0x00000000, access: read-write

0/5 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TS_1
rw
SMS_1
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MSM
rw
TS
rw
SMS
rw
Toggle fields

SMS

Bits 0-2: SMS[2:0]: Slave mode selection.

TS

Bits 4-6: TS[2:0]: Trigger selection.

MSM

Bit 7: Master/slave mode.

SMS_1

Bit 16: SMS[3].

TS_1

Bits 20-21: TS[4:3].

TIM15_DIER

TIM15 DMA/interrupt enable register

Offset: 0xc, size: 16, reset: 0x00000000, access: read-write

0/10 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TDE
rw
COMDE
rw
CC1DE
rw
UDE
rw
BIE
rw
TIE
rw
COMIE
rw
CC2IE
rw
CC1IE
rw
UIE
rw
Toggle fields

UIE

Bit 0: Update interrupt enable.

CC1IE

Bit 1: Capture/Compare 1 interrupt enable.

CC2IE

Bit 2: Capture/Compare 2 interrupt enable.

COMIE

Bit 5: COM interrupt enable.

TIE

Bit 6: Trigger interrupt enable.

BIE

Bit 7: Break interrupt enable.

UDE

Bit 8: Update DMA request enable.

CC1DE

Bit 9: Capture/Compare 1 DMA request enable.

COMDE

Bit 13: COM DMA request enable.

TDE

Bit 14: Trigger DMA request enable.

TIM15_SR

TIM15 status register

Offset: 0x10, size: 16, reset: 0x00000000, access: read-write

0/8 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC2OF
rw
CC1OF
rw
BIF
rw
TIF
rw
COMIF
rw
CC2IF
rw
CC1IF
rw
UIF
rw
Toggle fields

UIF

Bit 0: Update interrupt flag.

CC1IF

Bit 1: Capture/Compare 1 interrupt flag.

CC2IF

Bit 2: Capture/Compare 2 interrupt flag.

COMIF

Bit 5: COM interrupt flag.

TIF

Bit 6: Trigger interrupt flag.

BIF

Bit 7: Break interrupt flag.

CC1OF

Bit 9: Capture/Compare 1 overcapture flag.

CC2OF

Bit 10: Capture/Compare 2 overcapture flag.

TIM15_EGR

TIM15 event generation register

Offset: 0x14, size: 16, reset: 0x00000000, access: read-write

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BG
w
TG
w
COMG
rw
CC2G
w
CC1G
w
UG
w
Toggle fields

UG

Bit 0: Update generation.

CC1G

Bit 1: Capture/Compare 1 generation.

CC2G

Bit 2: Capture/Compare 2 generation.

COMG

Bit 5: Capture/Compare control update generation.

TG

Bit 6: Trigger generation.

BG

Bit 7: Break generation.

TIM15_CCMR1

TIM15 capture/compare mode register 1

Offset: 0x18, size: 32, reset: 0x00000000, access: read-write

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IC2F
rw
IC2PSC
rw
CC2S
rw
IC1F
rw
IC1PSC
rw
CC1S
rw
Toggle fields

CC1S

Bits 0-1: Capture/Compare 1 Selection.

IC1PSC

Bits 2-3: Input capture 1 prescaler.

IC1F

Bits 4-7: Input capture 1 filter.

CC2S

Bits 8-9: Capture/Compare 2 selection.

IC2PSC

Bits 10-11: Input capture 2 prescaler.

IC2F

Bits 12-15: Input capture 2 filter.

TIM15_CCMR1_ALTERNATE1

TIM15 capture/compare mode register 1

Offset: 0x18, size: 32, reset: 0x00000000, access: read-write

0/10 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OC2M_1
rw
OC1M_1
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OC2M
rw
OC2PE
rw
OC2FE
rw
CC2S
rw
OC1M
rw
OC1PE
rw
OC1FE
rw
CC1S
rw
Toggle fields

CC1S

Bits 0-1: Capture/Compare 1 selection.

OC1FE

Bit 2: Output Compare 1 fast enable.

OC1PE

Bit 3: Output Compare 1 preload enable.

OC1M

Bits 4-6: OC1M[2:0]: Output Compare 1 mode.

CC2S

Bits 8-9: Capture/Compare 2 selection.

OC2FE

Bit 10: Output Compare 2 fast enable.

OC2PE

Bit 11: Output Compare 2 preload enable.

OC2M

Bits 12-14: OC2M[2:0]: Output Compare 2 mode.

OC1M_1

Bit 16: OC1M[3].

OC2M_1

Bit 24: OC2M[3].

TIM15_CCER

TIM15 capture/compare enable register

Offset: 0x20, size: 16, reset: 0x00000000, access: read-write

0/7 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC2NP
rw
CC2P
rw
CC2E
rw
CC1NP
rw
CC1NE
rw
CC1P
rw
CC1E
rw
Toggle fields

CC1E

Bit 0: Capture/Compare 1 output enable.

CC1P

Bit 1: Capture/Compare 1 output polarity.

CC1NE

Bit 2: Capture/Compare 1 complementary output enable.

CC1NP

Bit 3: Capture/Compare 1 complementary output polarity.

CC2E

Bit 4: Capture/Compare 2 output enable.

CC2P

Bit 5: Capture/Compare 2 output polarity.

CC2NP

Bit 7: Capture/Compare 2 complementary output polarity.

TIM15_CNT

TIM15 counter

Offset: 0x24, size: 32, reset: 0x00000000, access: read-write

1/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
UIFCPY
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CNT
rw
Toggle fields

CNT

Bits 0-15: Counter value.

UIFCPY

Bit 31: UIF Copy.

TIM15_PSC

TIM15 prescaler

Offset: 0x28, size: 16, reset: 0x00000000, access: read-write

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PSC
rw
Toggle fields

PSC

Bits 0-15: Prescaler value.

TIM15_ARR

TIM15 auto-reload register

Offset: 0x2c, size: 16, reset: 0x0000FFFF, access: read-write

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ARR
rw
Toggle fields

ARR

Bits 0-15: Auto-reload value.

TIM15_RCR

TIM15 repetition counter register

Offset: 0x30, size: 16, reset: 0x00000000, access: read-write

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
REP
rw
Toggle fields

REP

Bits 0-7: Repetition counter value.

TIM15_CCR1

TIM15 capture/compare register 1

Offset: 0x34, size: 16, reset: 0x00000000, access: read-write

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR1
rw
Toggle fields

CCR1

Bits 0-15: Capture/Compare 1 value.

TIM15_CCR2

TIM15 capture/compare register 2

Offset: 0x38, size: 16, reset: 0x00000000, access: read-write

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR2
rw
Toggle fields

CCR2

Bits 0-15: Capture/Compare 2 value.

TIM15_BDTR

TIM15 break and dead-time register

Offset: 0x44, size: 32, reset: 0x00000000, access: read-write

0/11 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BKBID
rw
BKDSRM
rw
BKF
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MOE
rw
AOE
rw
BKP
rw
BKE
rw
OSSR
rw
OSSI
rw
LOCK
rw
DTG
rw
Toggle fields

DTG

Bits 0-7: Dead-time generator setup.

LOCK

Bits 8-9: Lock configuration.

OSSI

Bit 10: Off-state selection for Idle mode.

OSSR

Bit 11: Off-state selection for Run mode.

BKE

Bit 12: Break enable.

BKP

Bit 13: Break polarity.

AOE

Bit 14: Automatic output enable.

MOE

Bit 15: Main output enable.

BKF

Bits 16-19: Break filter.

BKDSRM

Bit 26: Break Disarm.

BKBID

Bit 28: Break Bidirectional.

TIM15_DCR

TIM15 DMA control register

Offset: 0x48, size: 16, reset: 0x00000000, access: read-write

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DBL
rw
DBA
rw
Toggle fields

DBA

Bits 0-4: DMA base address.

DBL

Bits 8-12: DMA burst length.

TIM15_DMAR

TIM15 DMA address for full transfer

Offset: 0x4c, size: 16, reset: 0x00000000, access: read-write

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DMAB
rw
Toggle fields

DMAB

Bits 0-15: DMA register for burst accesses.

TIM15_AF1

TIM15 alternate register 1

Offset: 0x60, size: 32, reset: 0x00000001, access: read-write

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BKCMP2P
rw
BKCMP1P
rw
BKINP
rw
BKCMP2E
rw
BKCMP1E
rw
BKINE
rw
Toggle fields

BKINE

Bit 0: BRK BKIN input enable.

BKCMP1E

Bit 1: BRK COMP1 enable.

BKCMP2E

Bit 2: BRK COMP2 enable.

BKINP

Bit 9: BRK BKIN input polarity.

BKCMP1P

Bit 10: BRK COMP1 input polarity.

BKCMP2P

Bit 11: BRK COMP2 input polarity.

TIM15_TISEL

TIM15 input selection register

Offset: 0x68, size: 32, reset: 0x00000000, access: read-write

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TI2SEL
rw
TI1SEL
rw
Toggle fields

TI1SEL

Bits 0-3: selects TI1[0] to TI1[15] input.

TI2SEL

Bits 8-11: selects TI2[0] to TI2[15] input.

TIM16

0x40014400: TIM16 address block description

1/66 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 (16-bit) TIM16_CR1
0x4 (16-bit) TIM16_CR2
0xc (16-bit) TIM16_DIER
0x10 (16-bit) TIM16_SR
0x14 (16-bit) TIM16_EGR
0x18 TIM16_CCMR1
0x18 TIM16_CCMR1_ALTERNATE1
0x20 (16-bit) TIM16_CCER
0x24 TIM16_CNT
0x28 (16-bit) TIM16_PSC
0x2c (16-bit) TIM16_ARR
0x30 (16-bit) TIM16_RCR
0x34 (16-bit) TIM16_CCR1
0x44 TIM16_BDTR
0x48 (16-bit) TIM16_DCR
0x4c (16-bit) TIM16_DMAR
0x60 TIM16_AF1
0x68 TIM16_TISEL
Toggle registers

TIM16_CR1

TIM16 control register 1

Offset: 0x0, size: 16, reset: 0x00000000, access: read-write

0/7 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UIFREMAP
rw
CKD
rw
ARPE
rw
OPM
rw
URS
rw
UDIS
rw
CEN
rw
Toggle fields

CEN

Bit 0: Counter enable.

UDIS

Bit 1: Update disable.

URS

Bit 2: Update request source.

OPM

Bit 3: One pulse mode.

ARPE

Bit 7: Auto-reload preload enable.

CKD

Bits 8-9: Clock division.

UIFREMAP

Bit 11: UIF status bit remapping.

TIM16_CR2

TIM16 control register 2

Offset: 0x4, size: 16, reset: 0x00000000, access: read-write

0/5 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OIS1N
rw
OIS1
rw
CCDS
rw
CCUS
rw
CCPC
rw
Toggle fields

CCPC

Bit 0: Capture/compare preloaded control.

CCUS

Bit 2: Capture/compare control update selection.

CCDS

Bit 3: Capture/compare DMA selection.

OIS1

Bit 8: Output Idle state 1 (OC1 output).

OIS1N

Bit 9: Output Idle state 1 (OC1N output).

TIM16_DIER

TIM16 DMA/interrupt enable register

Offset: 0xc, size: 16, reset: 0x00000000, access: read-write

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC1DE
rw
UDE
rw
BIE
rw
COMIE
rw
CC1IE
rw
UIE
rw
Toggle fields

UIE

Bit 0: Update interrupt enable.

CC1IE

Bit 1: Capture/Compare 1 interrupt enable.

COMIE

Bit 5: COM interrupt enable.

BIE

Bit 7: Break interrupt enable.

UDE

Bit 8: Update DMA request enable.

CC1DE

Bit 9: Capture/Compare 1 DMA request enable.

TIM16_SR

TIM16 status register

Offset: 0x10, size: 16, reset: 0x00000000, access: read-write

0/5 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC1OF
rw
BIF
rw
COMIF
rw
CC1IF
rw
UIF
rw
Toggle fields

UIF

Bit 0: Update interrupt flag.

CC1IF

Bit 1: Capture/Compare 1 interrupt flag.

COMIF

Bit 5: COM interrupt flag.

BIF

Bit 7: Break interrupt flag.

CC1OF

Bit 9: Capture/Compare 1 overcapture flag.

TIM16_EGR

TIM16 event generation register

Offset: 0x14, size: 16, reset: 0x00000000, access: write-only

0/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BG
w
COMG
w
CC1G
w
UG
w
Toggle fields

UG

Bit 0: Update generation.

CC1G

Bit 1: Capture/Compare 1 generation.

COMG

Bit 5: Capture/Compare control update generation.

BG

Bit 7: Break generation.

TIM16_CCMR1

TIM16 capture/compare mode register 1

Offset: 0x18, size: 32, reset: 0x00000000, access: read-write

0/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IC1F
rw
IC1PSC
rw
CC1S
rw
Toggle fields

CC1S

Bits 0-1: Capture/Compare 1 Selection.

IC1PSC

Bits 2-3: Input capture 1 prescaler.

IC1F

Bits 4-7: Input capture 1 filter.

TIM16_CCMR1_ALTERNATE1

TIM16 capture/compare mode register 1

Offset: 0x18, size: 32, reset: 0x00000000, access: read-write

0/5 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OC1M_1
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OC1M
rw
OC1PE
rw
OC1FE
rw
CC1S
rw
Toggle fields

CC1S

Bits 0-1: Capture/Compare 1 selection.

OC1FE

Bit 2: Output Compare 1 fast enable.

OC1PE

Bit 3: Output Compare 1 preload enable.

OC1M

Bits 4-6: OC1M[2:0]: Output Compare 1 mode.

OC1M_1

Bit 16: OC1M[3].

TIM16_CCER

TIM16 capture/compare enable register

Offset: 0x20, size: 16, reset: 0x00000000, access: read-write

0/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC1NP
rw
CC1NE
rw
CC1P
rw
CC1E
rw
Toggle fields

CC1E

Bit 0: Capture/Compare 1 output enable.

CC1P

Bit 1: Capture/Compare 1 output polarity.

CC1NE

Bit 2: Capture/Compare 1 complementary output enable.

CC1NP

Bit 3: Capture/Compare 1 complementary output polarity.

TIM16_CNT

TIM16 counter

Offset: 0x24, size: 32, reset: 0x00000000, access: read-write

1/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
UIFCPY
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CNT
rw
Toggle fields

CNT

Bits 0-15: Counter value.

UIFCPY

Bit 31: UIF Copy.

TIM16_PSC

TIM16 prescaler

Offset: 0x28, size: 16, reset: 0x00000000, access: read-write

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PSC
rw
Toggle fields

PSC

Bits 0-15: Prescaler value.

TIM16_ARR

TIM16 auto-reload register

Offset: 0x2c, size: 16, reset: 0x0000FFFF, access: read-write

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ARR
rw
Toggle fields

ARR

Bits 0-15: Auto-reload value.

TIM16_RCR

TIM16 repetition counter register

Offset: 0x30, size: 16, reset: 0x00000000, access: read-write

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
REP
rw
Toggle fields

REP

Bits 0-7: Repetition counter value.

TIM16_CCR1

TIM16 capture/compare register 1

Offset: 0x34, size: 16, reset: 0x00000000, access: read-write

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR1
rw
Toggle fields

CCR1

Bits 0-15: Capture/Compare 1 value.

TIM16_BDTR

TIM16 break and dead-time register

Offset: 0x44, size: 32, reset: 0x00000000, access: read-write

0/11 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BKBID
rw
BKDSRM
rw
BKF
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MOE
rw
AOE
rw
BKP
rw
BKE
rw
OSSR
rw
OSSI
rw
LOCK
rw
DTG
rw
Toggle fields

DTG

Bits 0-7: Dead-time generator setup.

LOCK

Bits 8-9: Lock configuration.

OSSI

Bit 10: Off-state selection for Idle mode.

OSSR

Bit 11: Off-state selection for Run mode.

BKE

Bit 12: Break enable.

BKP

Bit 13: Break polarity.

AOE

Bit 14: Automatic output enable.

MOE

Bit 15: Main output enable.

BKF

Bits 16-19: Break filter.

BKDSRM

Bit 26: Break Disarm.

BKBID

Bit 28: Break Bidirectional.

TIM16_DCR

TIM16 DMA control register

Offset: 0x48, size: 16, reset: 0x00000000, access: read-write

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DBL
rw
DBA
rw
Toggle fields

DBA

Bits 0-4: DMA base address.

DBL

Bits 8-12: DMA burst length.

TIM16_DMAR

TIM16 DMA address for full transfer

Offset: 0x4c, size: 16, reset: 0x00000000, access: read-write

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DMAB
rw
Toggle fields

DMAB

Bits 0-15: DMA register for burst accesses.

TIM16_AF1

TIM16 alternate function register 1

Offset: 0x60, size: 32, reset: 0x00000001, access: read-write

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BKCMP2P
rw
BKCMP1P
rw
BKINP
rw
BKCMP2E
rw
BKCMP1E
rw
BKINE
rw
Toggle fields

BKINE

Bit 0: BRK BKIN input enable.

BKCMP1E

Bit 1: BRK COMP1 enable.

BKCMP2E

Bit 2: BRK COMP2 enable.

BKINP

Bit 9: BRK BKIN input polarity.

BKCMP1P

Bit 10: BRK COMP1 input polarity.

BKCMP2P

Bit 11: BRK COMP2 input polarity.

TIM16_TISEL

TIM16 input selection register

Offset: 0x68, size: 32, reset: 0x00000000, access: read-write

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TI1SEL
rw
Toggle fields

TI1SEL

Bits 0-3: selects TI1[0] to TI1[15] input.

TIM2

0x40000000: TIM2 address block description

0/115 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 (16-bit) TIM2_CR1
0x4 (16-bit) TIM2_CR2
0x8 TIM2_SMCR
0xc (16-bit) TIM2_DIER
0x10 (16-bit) TIM2_SR
0x14 (16-bit) TIM2_EGR
0x18 TIM2_CCMR1
0x18 TIM2_CCMR1_ALTERNATE1
0x1c TIM2_CCMR2
0x1c TIM2_CCMR2_ALTERNATE1
0x20 (16-bit) TIM2_CCER
0x24 TIM2_CNT
0x24 TIM2_CNT_ALTERNATE1
0x28 (16-bit) TIM2_PSC
0x2c TIM2_ARR
0x34 TIM2_CCR1
0x38 TIM2_CCR2
0x3c TIM2_CCR3
0x40 TIM2_CCR4
0x48 (16-bit) TIM2_DCR
0x4c (16-bit) TIM2_DMAR
0x50 TIM2_OR1
0x60 TIM2_AF1
0x68 TIM2_TISEL
Toggle registers

TIM2_CR1

TIM2 control register 1

Offset: 0x0, size: 16, reset: 0x00000000, access: read-write

0/9 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UIFREMAP
rw
CKD
rw
ARPE
rw
CMS
rw
DIR
rw
OPM
rw
URS
rw
UDIS
rw
CEN
rw
Toggle fields

CEN

Bit 0: Counter enable.

UDIS

Bit 1: Update disable.

URS

Bit 2: Update request source.

OPM

Bit 3: One-pulse mode.

DIR

Bit 4: Direction.

CMS

Bits 5-6: Center-aligned mode selection.

ARPE

Bit 7: Auto-reload preload enable.

CKD

Bits 8-9: Clock division.

UIFREMAP

Bit 11: UIF status bit remapping.

TIM2_CR2

TIM2 control register 2

Offset: 0x4, size: 16, reset: 0x00000000, access: read-write

0/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TI1S
rw
MMS
rw
CCDS
rw
Toggle fields

CCDS

Bit 3: Capture/compare DMA selection.

MMS

Bits 4-6: Master mode selection.

TI1S

Bit 7: TI1 selection.

TIM2_SMCR

TIM2 slave mode control register

Offset: 0x8, size: 32, reset: 0x00000000, access: read-write

0/10 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TS_1
rw
SMS_1
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ETP
rw
ECE
rw
ETPS
rw
ETF
rw
MSM
rw
TS
rw
OCCS
rw
SMS
rw
Toggle fields

SMS

Bits 0-2: SMS[2:0]: Slave mode selection.

OCCS

Bit 3: OCREF clear selection.

TS

Bits 4-6: TS[2:0]: Trigger selection.

MSM

Bit 7: Master/Slave mode.

ETF

Bits 8-11: External trigger filter.

ETPS

Bits 12-13: External trigger prescaler.

ECE

Bit 14: External clock enable.

ETP

Bit 15: External trigger polarity.

SMS_1

Bit 16: SMS[3].

TS_1

Bits 20-21: TS[4:3].

TIM2_DIER

TIM2 DMA/Interrupt enable register

Offset: 0xc, size: 16, reset: 0x00000000, access: read-write

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TDE
rw
CC4DE
rw
CC3DE
rw
CC2DE
rw
CC1DE
rw
UDE
rw
TIE
rw
CC4IE
rw
CC3IE
rw
CC2IE
rw
CC1IE
rw
UIE
rw
Toggle fields

UIE

Bit 0: Update interrupt enable.

CC1IE

Bit 1: Capture/Compare 1 interrupt enable.

CC2IE

Bit 2: Capture/Compare 2 interrupt enable.

CC3IE

Bit 3: Capture/Compare 3 interrupt enable.

CC4IE

Bit 4: Capture/Compare 4 interrupt enable.

TIE

Bit 6: Trigger interrupt enable.

UDE

Bit 8: Update DMA request enable.

CC1DE

Bit 9: Capture/Compare 1 DMA request enable.

CC2DE

Bit 10: Capture/Compare 2 DMA request enable.

CC3DE

Bit 11: Capture/Compare 3 DMA request enable.

CC4DE

Bit 12: Capture/Compare 4 DMA request enable.

TDE

Bit 14: Trigger DMA request enable.

TIM2_SR

TIM2 status register

Offset: 0x10, size: 16, reset: 0x00000000, access: read-write

0/10 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC4OF
rw
CC3OF
rw
CC2OF
rw
CC1OF
rw
TIF
rw
CC4IF
rw
CC3IF
rw
CC2IF
rw
CC1IF
rw
UIF
rw
Toggle fields

UIF

Bit 0: Update interrupt flag.

CC1IF

Bit 1: Capture/compare 1 interrupt flag.

CC2IF

Bit 2: Capture/Compare 2 interrupt flag.

CC3IF

Bit 3: Capture/Compare 3 interrupt flag.

CC4IF

Bit 4: Capture/Compare 4 interrupt flag.

TIF

Bit 6: Trigger interrupt flag.

CC1OF

Bit 9: Capture/Compare 1 overcapture flag.

CC2OF

Bit 10: Capture/compare 2 overcapture flag.

CC3OF

Bit 11: Capture/Compare 3 overcapture flag.

CC4OF

Bit 12: Capture/Compare 4 overcapture flag.

TIM2_EGR

TIM2 event generation register

Offset: 0x14, size: 16, reset: 0x00000000, access: write-only

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TG
w
CC4G
w
CC3G
w
CC2G
w
CC1G
w
UG
w
Toggle fields

UG

Bit 0: Update generation.

CC1G

Bit 1: Capture/compare 1 generation.

CC2G

Bit 2: Capture/compare 2 generation.

CC3G

Bit 3: Capture/compare 3 generation.

CC4G

Bit 4: Capture/compare 4 generation.

TG

Bit 6: Trigger generation.

TIM2_CCMR1

TIM2 capture/compare mode register 1

Offset: 0x18, size: 32, reset: 0x00000000, access: read-write

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IC2F
rw
IC2PSC
rw
CC2S
rw
IC1F
rw
IC1PSC
rw
CC1S
rw
Toggle fields

CC1S

Bits 0-1: Capture/Compare 1 selection.

IC1PSC

Bits 2-3: Input capture 1 prescaler.

IC1F

Bits 4-7: Input capture 1 filter.

CC2S

Bits 8-9: Capture/compare 2 selection.

IC2PSC

Bits 10-11: Input capture 2 prescaler.

IC2F

Bits 12-15: Input capture 2 filter.

TIM2_CCMR1_ALTERNATE1

TIM2 capture/compare mode register 1

Offset: 0x18, size: 32, reset: 0x00000000, access: read-write

0/12 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OC2M_1
rw
OC1M_1
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OC2CE
rw
OC2M
rw
OC2PE
rw
OC2FE
rw
CC2S
rw
OC1CE
rw
OC1M
rw
OC1PE
rw
OC1FE
rw
CC1S
rw
Toggle fields

CC1S

Bits 0-1: Capture/Compare 1 selection.

OC1FE

Bit 2: Output compare 1 fast enable.

OC1PE

Bit 3: Output compare 1 preload enable.

OC1M

Bits 4-6: OC1M[2:0]: Output compare 1 mode.

OC1CE

Bit 7: Output compare 1 clear enable.

CC2S

Bits 8-9: Capture/Compare 2 selection.

OC2FE

Bit 10: Output compare 2 fast enable.

OC2PE

Bit 11: Output compare 2 preload enable.

OC2M

Bits 12-14: OC2M[2:0]: Output compare 2 mode.

OC2CE

Bit 15: Output compare 2 clear enable.

OC1M_1

Bit 16: OC1M[3].

OC2M_1

Bit 24: OC2M[3].

TIM2_CCMR2

TIM2 capture/compare mode register 2

Offset: 0x1c, size: 32, reset: 0x00000000, access: read-write

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IC4F
rw
IC4PSC
rw
CC4S
rw
IC3F
rw
IC3PSC
rw
CC3S
rw
Toggle fields

CC3S

Bits 0-1: Capture/Compare 3 selection.

IC3PSC

Bits 2-3: Input capture 3 prescaler.

IC3F

Bits 4-7: Input capture 3 filter.

CC4S

Bits 8-9: Capture/Compare 4 selection.

IC4PSC

Bits 10-11: Input capture 4 prescaler.

IC4F

Bits 12-15: Input capture 4 filter.

TIM2_CCMR2_ALTERNATE1

TIM2 capture/compare mode register 2

Offset: 0x1c, size: 32, reset: 0x00000000, access: read-write

0/12 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OC4M_1
rw
OC3M_1
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OC4CE
rw
OC4M
rw
OC4PE
rw
OC4FE
rw
CC4S
rw
OC3CE
rw
OC3M
rw
OC3PE
rw
OC3FE
rw
CC3S
rw
Toggle fields

CC3S

Bits 0-1: Capture/Compare 3 selection.

OC3FE

Bit 2: Output compare 3 fast enable.

OC3PE

Bit 3: Output compare 3 preload enable.

OC3M

Bits 4-6: OC3M[2:0]: Output compare 3 mode.

OC3CE

Bit 7: Output compare 3 clear enable.

CC4S

Bits 8-9: Capture/Compare 4 selection.

OC4FE

Bit 10: Output compare 4 fast enable.

OC4PE

Bit 11: Output compare 4 preload enable.

OC4M

Bits 12-14: OC4M[2:0]: Output compare 4 mode.

OC4CE

Bit 15: Output compare 4 clear enable.

OC3M_1

Bit 16: OC3M[3].

OC4M_1

Bit 24: OC4M[3].

TIM2_CCER

TIM2 capture/compare enable register

Offset: 0x20, size: 16, reset: 0x00000000, access: read-write

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC4NP
rw
CC4P
rw
CC4E
rw
CC3NP
rw
CC3P
rw
CC3E
rw
CC2NP
rw
CC2P
rw
CC2E
rw
CC1NP
rw
CC1P
rw
CC1E
rw
Toggle fields

CC1E

Bit 0: Capture/Compare 1 output enable..

CC1P

Bit 1: Capture/Compare 1 output Polarity..

CC1NP

Bit 3: Capture/Compare 1 output Polarity..

CC2E

Bit 4: Capture/Compare 2 output enable..

CC2P

Bit 5: Capture/Compare 2 output Polarity..

CC2NP

Bit 7: Capture/Compare 2 output Polarity..

CC3E

Bit 8: Capture/Compare 3 output enable..

CC3P

Bit 9: Capture/Compare 3 output Polarity..

CC3NP

Bit 11: Capture/Compare 3 output Polarity..

CC4E

Bit 12: Capture/Compare 4 output enable..

CC4P

Bit 13: Capture/Compare 4 output Polarity..

CC4NP

Bit 15: Capture/Compare 4 output Polarity..

TIM2_CNT

TIM2 counter

Offset: 0x24, size: 32, reset: 0x00000000, access: read-write

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CNT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CNT
rw
Toggle fields

CNT

Bits 0-31: Least significant part of counter value.

TIM2_CNT_ALTERNATE1

TIM2 counter

Offset: 0x24, size: 32, reset: 0x00000000, access: read-write

0/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
UIFCPY
rw
CNT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CNT
rw
Toggle fields

CNT

Bits 0-30: Least significant part of counter value.

UIFCPY

Bit 31: UIF Copy.

TIM2_PSC

TIM2 prescaler

Offset: 0x28, size: 16, reset: 0x00000000, access: read-write

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PSC
rw
Toggle fields

PSC

Bits 0-15: Prescaler value.

TIM2_ARR

TIM2 auto-reload register

Offset: 0x2c, size: 32, reset: 0xFFFFFFFF, access: read-write

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ARR
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ARR
rw
Toggle fields

ARR

Bits 0-31: Low Auto-reload value.

TIM2_CCR1

TIM2 capture/compare register 1

Offset: 0x34, size: 32, reset: 0x00000000, access: read-write

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CCR1
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR1
rw
Toggle fields

CCR1

Bits 0-31: Low Capture/Compare 1 value.

TIM2_CCR2

TIM2 capture/compare register 2

Offset: 0x38, size: 32, reset: 0x00000000, access: read-write

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CCR2
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR2
rw
Toggle fields

CCR2

Bits 0-31: Low Capture/Compare 2 value.

TIM2_CCR3

TIM2 capture/compare register 3

Offset: 0x3c, size: 32, reset: 0x00000000, access: read-write

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CCR3
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR3
rw
Toggle fields

CCR3

Bits 0-31: Low Capture/Compare value.

TIM2_CCR4

TIM2 capture/compare register 4

Offset: 0x40, size: 32, reset: 0x00000000, access: read-write

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CCR4
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR4
rw
Toggle fields

CCR4

Bits 0-31: Low Capture/Compare value.

TIM2_DCR

TIM2 DMA control register

Offset: 0x48, size: 16, reset: 0x00000000, access: read-write

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DBL
rw
DBA
rw
Toggle fields

DBA

Bits 0-4: DMA base address.

DBL

Bits 8-12: DMA burst length.

TIM2_DMAR

TIM2 DMA address for full transfer

Offset: 0x4c, size: 16, reset: 0x00000000, access: read-write

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DMAB
rw
Toggle fields

DMAB

Bits 0-15: DMA register for burst accesses.

TIM2_OR1

TIM2 option register 1

Offset: 0x50, size: 32, reset: 0x00000000, access: read-write

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OCREF_CLR
rw
Toggle fields

OCREF_CLR

Bits 0-1: Ocref_clr source selection.

TIM2_AF1

TIM2 alternate function option register 1

Offset: 0x60, size: 32, reset: 0x00000000, access: read-write

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ETRSEL
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ETRSEL
rw
Toggle fields

ETRSEL

Bits 14-17: ETR source selection.

TIM2_TISEL

TIM2 timer input selection register

Offset: 0x68, size: 32, reset: 0x00000000, access: read-write

0/3 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TI3SEL
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TI2SEL
rw
TI1SEL
rw
Toggle fields

TI1SEL

Bits 0-3: TI1[0] to TI1[15] input selection.

TI2SEL

Bits 8-11: TI2[0] to TI2[15] input selection.

TI3SEL

Bits 16-19: TI3[0] to TI3[15] input selection.

TIM3

0x40000400: TIM3 address block description

0/115 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 (16-bit) TIM3_CR1
0x4 (16-bit) TIM3_CR2
0x8 TIM3_SMCR
0xc (16-bit) TIM3_DIER
0x10 (16-bit) TIM3_SR
0x14 (16-bit) TIM3_EGR
0x18 TIM3_CCMR1
0x18 TIM3_CCMR1_ALTERNATE1
0x1c TIM3_CCMR2
0x1c TIM3_CCMR2_ALTERNATE1
0x20 (16-bit) TIM3_CCER
0x24 TIM3_CNT
0x24 TIM3_CNT_ALTERNATE1
0x28 (16-bit) TIM3_PSC
0x2c TIM3_ARR
0x34 TIM3_CCR1
0x38 TIM3_CCR2
0x3c TIM3_CCR3
0x40 TIM3_CCR4
0x48 (16-bit) TIM3_DCR
0x4c (16-bit) TIM3_DMAR
0x50 TIM3_OR1
0x60 TIM3_AF1
0x68 TIM3_TISEL
Toggle registers

TIM3_CR1

TIM3 control register 1

Offset: 0x0, size: 16, reset: 0x00000000, access: read-write

0/9 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UIFREMAP
rw
CKD
rw
ARPE
rw
CMS
rw
DIR
rw
OPM
rw
URS
rw
UDIS
rw
CEN
rw
Toggle fields

CEN

Bit 0: Counter enable.

UDIS

Bit 1: Update disable.

URS

Bit 2: Update request source.

OPM

Bit 3: One-pulse mode.

DIR

Bit 4: Direction.

CMS

Bits 5-6: Center-aligned mode selection.

ARPE

Bit 7: Auto-reload preload enable.

CKD

Bits 8-9: Clock division.

UIFREMAP

Bit 11: UIF status bit remapping.

TIM3_CR2

TIM3 control register 2

Offset: 0x4, size: 16, reset: 0x00000000, access: read-write

0/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TI1S
rw
MMS
rw
CCDS
rw
Toggle fields

CCDS

Bit 3: Capture/compare DMA selection.

MMS

Bits 4-6: Master mode selection.

TI1S

Bit 7: TI1 selection.

TIM3_SMCR

TIM3 slave mode control register

Offset: 0x8, size: 32, reset: 0x00000000, access: read-write

0/10 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TS_1
rw
SMS_1
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ETP
rw
ECE
rw
ETPS
rw
ETF
rw
MSM
rw
TS
rw
OCCS
rw
SMS
rw
Toggle fields

SMS

Bits 0-2: SMS[2:0]: Slave mode selection.

OCCS

Bit 3: OCREF clear selection.

TS

Bits 4-6: TS[2:0]: Trigger selection.

MSM

Bit 7: Master/Slave mode.

ETF

Bits 8-11: External trigger filter.

ETPS

Bits 12-13: External trigger prescaler.

ECE

Bit 14: External clock enable.

ETP

Bit 15: External trigger polarity.

SMS_1

Bit 16: SMS[3].

TS_1

Bits 20-21: TS[4:3].

TIM3_DIER

TIM3 DMA/Interrupt enable register

Offset: 0xc, size: 16, reset: 0x00000000, access: read-write

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TDE
rw
CC4DE
rw
CC3DE
rw
CC2DE
rw
CC1DE
rw
UDE
rw
TIE
rw
CC4IE
rw
CC3IE
rw
CC2IE
rw
CC1IE
rw
UIE
rw
Toggle fields

UIE

Bit 0: Update interrupt enable.

CC1IE

Bit 1: Capture/Compare 1 interrupt enable.

CC2IE

Bit 2: Capture/Compare 2 interrupt enable.

CC3IE

Bit 3: Capture/Compare 3 interrupt enable.

CC4IE

Bit 4: Capture/Compare 4 interrupt enable.

TIE

Bit 6: Trigger interrupt enable.

UDE

Bit 8: Update DMA request enable.

CC1DE

Bit 9: Capture/Compare 1 DMA request enable.

CC2DE

Bit 10: Capture/Compare 2 DMA request enable.

CC3DE

Bit 11: Capture/Compare 3 DMA request enable.

CC4DE

Bit 12: Capture/Compare 4 DMA request enable.

TDE

Bit 14: Trigger DMA request enable.

TIM3_SR

TIM3 status register

Offset: 0x10, size: 16, reset: 0x00000000, access: read-write

0/10 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC4OF
rw
CC3OF
rw
CC2OF
rw
CC1OF
rw
TIF
rw
CC4IF
rw
CC3IF
rw
CC2IF
rw
CC1IF
rw
UIF
rw
Toggle fields

UIF

Bit 0: Update interrupt flag.

CC1IF

Bit 1: Capture/compare 1 interrupt flag.

CC2IF

Bit 2: Capture/Compare 2 interrupt flag.

CC3IF

Bit 3: Capture/Compare 3 interrupt flag.

CC4IF

Bit 4: Capture/Compare 4 interrupt flag.

TIF

Bit 6: Trigger interrupt flag.

CC1OF

Bit 9: Capture/Compare 1 overcapture flag.

CC2OF

Bit 10: Capture/compare 2 overcapture flag.

CC3OF

Bit 11: Capture/Compare 3 overcapture flag.

CC4OF

Bit 12: Capture/Compare 4 overcapture flag.

TIM3_EGR

TIM3 event generation register

Offset: 0x14, size: 16, reset: 0x00000000, access: write-only

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TG
w
CC4G
w
CC3G
w
CC2G
w
CC1G
w
UG
w
Toggle fields

UG

Bit 0: Update generation.

CC1G

Bit 1: Capture/compare 1 generation.

CC2G

Bit 2: Capture/compare 2 generation.

CC3G

Bit 3: Capture/compare 3 generation.

CC4G

Bit 4: Capture/compare 4 generation.

TG

Bit 6: Trigger generation.

TIM3_CCMR1

TIM3 capture/compare mode register 1

Offset: 0x18, size: 32, reset: 0x00000000, access: read-write

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IC2F
rw
IC2PSC
rw
CC2S
rw
IC1F
rw
IC1PSC
rw
CC1S
rw
Toggle fields

CC1S

Bits 0-1: Capture/Compare 1 selection.

IC1PSC

Bits 2-3: Input capture 1 prescaler.

IC1F

Bits 4-7: Input capture 1 filter.

CC2S

Bits 8-9: Capture/compare 2 selection.

IC2PSC

Bits 10-11: Input capture 2 prescaler.

IC2F

Bits 12-15: Input capture 2 filter.

TIM3_CCMR1_ALTERNATE1

TIM3 capture/compare mode register 1

Offset: 0x18, size: 32, reset: 0x00000000, access: read-write

0/12 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OC2M_1
rw
OC1M_1
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OC2CE
rw
OC2M
rw
OC2PE
rw
OC2FE
rw
CC2S
rw
OC1CE
rw
OC1M
rw
OC1PE
rw
OC1FE
rw
CC1S
rw
Toggle fields

CC1S

Bits 0-1: Capture/Compare 1 selection.

OC1FE

Bit 2: Output compare 1 fast enable.

OC1PE

Bit 3: Output compare 1 preload enable.

OC1M

Bits 4-6: OC1M[2:0]: Output compare 1 mode.

OC1CE

Bit 7: Output compare 1 clear enable.

CC2S

Bits 8-9: Capture/Compare 2 selection.

OC2FE

Bit 10: Output compare 2 fast enable.

OC2PE

Bit 11: Output compare 2 preload enable.

OC2M

Bits 12-14: OC2M[2:0]: Output compare 2 mode.

OC2CE

Bit 15: Output compare 2 clear enable.

OC1M_1

Bit 16: OC1M[3].

OC2M_1

Bit 24: OC2M[3].

TIM3_CCMR2

TIM3 capture/compare mode register 2

Offset: 0x1c, size: 32, reset: 0x00000000, access: read-write

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IC4F
rw
IC4PSC
rw
CC4S
rw
IC3F
rw
IC3PSC
rw
CC3S
rw
Toggle fields

CC3S

Bits 0-1: Capture/Compare 3 selection.

IC3PSC

Bits 2-3: Input capture 3 prescaler.

IC3F

Bits 4-7: Input capture 3 filter.

CC4S

Bits 8-9: Capture/Compare 4 selection.

IC4PSC

Bits 10-11: Input capture 4 prescaler.

IC4F

Bits 12-15: Input capture 4 filter.

TIM3_CCMR2_ALTERNATE1

TIM3 capture/compare mode register 2

Offset: 0x1c, size: 32, reset: 0x00000000, access: read-write

0/12 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OC4M_1
rw
OC3M_1
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OC4CE
rw
OC4M
rw
OC4PE
rw
OC4FE
rw
CC4S
rw
OC3CE
rw
OC3M
rw
OC3PE
rw
OC3FE
rw
CC3S
rw
Toggle fields

CC3S

Bits 0-1: Capture/Compare 3 selection.

OC3FE

Bit 2: Output compare 3 fast enable.

OC3PE

Bit 3: Output compare 3 preload enable.

OC3M

Bits 4-6: OC3M[2:0]: Output compare 3 mode.

OC3CE

Bit 7: Output compare 3 clear enable.

CC4S

Bits 8-9: Capture/Compare 4 selection.

OC4FE

Bit 10: Output compare 4 fast enable.

OC4PE

Bit 11: Output compare 4 preload enable.

OC4M

Bits 12-14: OC4M[2:0]: Output compare 4 mode.

OC4CE

Bit 15: Output compare 4 clear enable.

OC3M_1

Bit 16: OC3M[3].

OC4M_1

Bit 24: OC4M[3].

TIM3_CCER

TIM3 capture/compare enable register

Offset: 0x20, size: 16, reset: 0x00000000, access: read-write

0/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC4NP
rw
CC4P
rw
CC4E
rw
CC3NP
rw
CC3P
rw
CC3E
rw
CC2NP
rw
CC2P
rw
CC2E
rw
CC1NP
rw
CC1P
rw
CC1E
rw
Toggle fields

CC1E

Bit 0: Capture/Compare 1 output enable..

CC1P

Bit 1: Capture/Compare 1 output Polarity..

CC1NP

Bit 3: Capture/Compare 1 output Polarity..

CC2E

Bit 4: Capture/Compare 2 output enable..

CC2P

Bit 5: Capture/Compare 2 output Polarity..

CC2NP

Bit 7: Capture/Compare 2 output Polarity..

CC3E

Bit 8: Capture/Compare 3 output enable..

CC3P

Bit 9: Capture/Compare 3 output Polarity..

CC3NP

Bit 11: Capture/Compare 3 output Polarity..

CC4E

Bit 12: Capture/Compare 4 output enable..

CC4P

Bit 13: Capture/Compare 4 output Polarity..

CC4NP

Bit 15: Capture/Compare 4 output Polarity..

TIM3_CNT

TIM3 counter

Offset: 0x24, size: 32, reset: 0x00000000, access: read-write

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CNT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CNT
rw
Toggle fields

CNT

Bits 0-31: Least significant part of counter value.

TIM3_CNT_ALTERNATE1

TIM3 counter

Offset: 0x24, size: 32, reset: 0x00000000, access: read-write

0/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
UIFCPY
rw
CNT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CNT
rw
Toggle fields

CNT

Bits 0-30: Least significant part of counter value.

UIFCPY

Bit 31: UIF Copy.

TIM3_PSC

TIM3 prescaler

Offset: 0x28, size: 16, reset: 0x00000000, access: read-write

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PSC
rw
Toggle fields

PSC

Bits 0-15: Prescaler value.

TIM3_ARR

TIM3 auto-reload register

Offset: 0x2c, size: 32, reset: 0xFFFFFFFF, access: read-write

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ARR
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ARR
rw
Toggle fields

ARR

Bits 0-31: Low Auto-reload value.

TIM3_CCR1

TIM3 capture/compare register 1

Offset: 0x34, size: 32, reset: 0x00000000, access: read-write

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CCR1
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR1
rw
Toggle fields

CCR1

Bits 0-31: Low Capture/Compare 1 value.

TIM3_CCR2

TIM3 capture/compare register 2

Offset: 0x38, size: 32, reset: 0x00000000, access: read-write

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CCR2
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR2
rw
Toggle fields

CCR2

Bits 0-31: Low Capture/Compare 2 value.

TIM3_CCR3

TIM3 capture/compare register 3

Offset: 0x3c, size: 32, reset: 0x00000000, access: read-write

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CCR3
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR3
rw
Toggle fields

CCR3

Bits 0-31: Low Capture/Compare value.

TIM3_CCR4

TIM3 capture/compare register 4

Offset: 0x40, size: 32, reset: 0x00000000, access: read-write

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CCR4
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCR4
rw
Toggle fields

CCR4

Bits 0-31: Low Capture/Compare value.

TIM3_DCR

TIM3 DMA control register

Offset: 0x48, size: 16, reset: 0x00000000, access: read-write

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DBL
rw
DBA
rw
Toggle fields

DBA

Bits 0-4: DMA base address.

DBL

Bits 8-12: DMA burst length.

TIM3_DMAR

TIM3 DMA address for full transfer

Offset: 0x4c, size: 16, reset: 0x00000000, access: read-write

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DMAB
rw
Toggle fields

DMAB

Bits 0-15: DMA register for burst accesses.

TIM3_OR1

TIM3 option register 1

Offset: 0x50, size: 32, reset: 0x00000000, access: read-write

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OCREF_CLR
rw
Toggle fields

OCREF_CLR

Bits 0-1: Ocref_clr source selection.

TIM3_AF1

TIM3 alternate function option register 1

Offset: 0x60, size: 32, reset: 0x00000000, access: read-write

0/1 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ETRSEL
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ETRSEL
rw
Toggle fields

ETRSEL

Bits 14-17: ETR source selection.

TIM3_TISEL

TIM3 timer input selection register

Offset: 0x68, size: 32, reset: 0x00000000, access: read-write

0/3 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TI3SEL
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TI2SEL
rw
TI1SEL
rw
Toggle fields

TI1SEL

Bits 0-3: TI1[0] to TI1[15] input selection.

TI2SEL

Bits 8-11: TI2[0] to TI2[15] input selection.

TI3SEL

Bits 16-19: TI3[0] to TI3[15] input selection.

TIM6

0x40001000: TIM6 address block description

1/15 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 (16-bit) TIM6_CR1
0x4 (16-bit) TIM6_CR2
0xc (16-bit) TIM6_DIER
0x10 (16-bit) TIM6_SR
0x14 (16-bit) TIM6_EGR
0x24 TIM6_CNT
0x28 (16-bit) TIM6_PSC
0x2c (16-bit) TIM6_ARR
Toggle registers

TIM6_CR1

TIM6 control register 1

Offset: 0x0, size: 16, reset: 0x00000000, access: Unspecified

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UIFREMAP
rw
ARPE
rw
OPM
rw
URS
rw
UDIS
rw
CEN
rw
Toggle fields

CEN

Bit 0: Counter enable Note: Gated mode can work only if the CEN bit has been previously set by software. However trigger mode can set the CEN bit automatically by hardware. CEN is cleared automatically in one-pulse mode, when an update event occurs..

UDIS

Bit 1: Update disable This bit is set and cleared by software to enable/disable UEV event generation. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller Buffered registers are then loaded with their preload values..

URS

Bit 2: Update request source This bit is set and cleared by software to select the UEV event sources. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller.

OPM

Bit 3: One-pulse mode.

ARPE

Bit 7: Auto-reload preload enable.

UIFREMAP

Bit 11: UIF status bit remapping.

TIM6_CR2

TIM6 control register 2

Offset: 0x4, size: 16, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MMS
rw
Toggle fields

MMS

Bits 4-6: Master mode selection These bits are used to select the information to be sent in master mode to slave timers for synchronization (TRGO). The combination is as follows: When the Counter Enable signal is controlled by the trigger input, there is a delay on TRGO, except if the master/slave mode is selected (see the MSM bit description in the TIMx_SMCR register). Note: The clock of the slave timer or ADC must be enabled prior to receive events from the master timer, and must not be changed on-the-fly while triggers are received from the master timer..

TIM6_DIER

TIM6 DMA/Interrupt enable register

Offset: 0xc, size: 16, reset: 0x00000000, access: Unspecified

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UDE
rw
UIE
rw
Toggle fields

UIE

Bit 0: Update interrupt enable.

UDE

Bit 8: Update DMA request enable.

TIM6_SR

TIM6 status register

Offset: 0x10, size: 16, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UIF
rw
Toggle fields

UIF

Bit 0: Update interrupt flag This bit is set by hardware on an update event. It is cleared by software. At overflow or underflow regarding the repetition counter value and if UDIS = 0 in the TIMx_CR1 register. When CNT is reinitialized by software using the UG bit in the TIMx_EGR register, if URS1=10 and UDIS1=10 in the TIMx_CR1 register..

TIM6_EGR

TIM6 event generation register

Offset: 0x14, size: 16, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UG
w
Toggle fields

UG

Bit 0: Update generation This bit can be set by software, it is automatically cleared by hardware..

TIM6_CNT

TIM6 counter

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

1/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
UIFCPY
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CNT
rw
Toggle fields

CNT

Bits 0-15: Counter value.

UIFCPY

Bit 31: UIF Copy This bit is a read-only copy of the UIF bit of the TIMx_ISR register. If the UIFREMAP bit in TIMx_CR1 is reset, bit 31 is reserved and read as 0..

TIM6_PSC

TIM6 prescaler

Offset: 0x28, size: 16, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PSC
rw
Toggle fields

PSC

Bits 0-15: Prescaler value The counter clock frequency CK_CNT is equal to f<sub>CK_PSC</sub> / (PSC[15:0] + 1). PSC contains the value to be loaded into the active prescaler register at each update event. (including when the counter is cleared through UG bit of TIMx_EGR register or through trigger controller when configured in reset mode)..

TIM6_ARR

TIM6 auto-reload register

Offset: 0x2c, size: 16, reset: 0x0000FFFF, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ARR
rw
Toggle fields

ARR

Bits 0-15: Prescaler value ARR is the value to be loaded into the actual auto-reload register. Refer to Section123.3.1: Time-base unit on page1596 for more details about ARR update and behavior. The counter is blocked while the auto-reload value is null..

TIM7

0x40001400: TIM7 address block description

1/15 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 (16-bit) TIM7_CR1
0x4 (16-bit) TIM7_CR2
0xc (16-bit) TIM7_DIER
0x10 (16-bit) TIM7_SR
0x14 (16-bit) TIM7_EGR
0x24 TIM7_CNT
0x28 (16-bit) TIM7_PSC
0x2c (16-bit) TIM7_ARR
Toggle registers

TIM7_CR1

TIM7 control register 1

Offset: 0x0, size: 16, reset: 0x00000000, access: Unspecified

0/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UIFREMAP
rw
ARPE
rw
OPM
rw
URS
rw
UDIS
rw
CEN
rw
Toggle fields

CEN

Bit 0: Counter enable Note: Gated mode can work only if the CEN bit has been previously set by software. However trigger mode can set the CEN bit automatically by hardware. CEN is cleared automatically in one-pulse mode, when an update event occurs..

UDIS

Bit 1: Update disable This bit is set and cleared by software to enable/disable UEV event generation. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller Buffered registers are then loaded with their preload values..

URS

Bit 2: Update request source This bit is set and cleared by software to select the UEV event sources. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller.

OPM

Bit 3: One-pulse mode.

ARPE

Bit 7: Auto-reload preload enable.

UIFREMAP

Bit 11: UIF status bit remapping.

TIM7_CR2

TIM7 control register 2

Offset: 0x4, size: 16, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MMS
rw
Toggle fields

MMS

Bits 4-6: Master mode selection These bits are used to select the information to be sent in master mode to slave timers for synchronization (TRGO). The combination is as follows: When the Counter Enable signal is controlled by the trigger input, there is a delay on TRGO, except if the master/slave mode is selected (see the MSM bit description in the TIMx_SMCR register). Note: The clock of the slave timer or ADC must be enabled prior to receive events from the master timer, and must not be changed on-the-fly while triggers are received from the master timer..

TIM7_DIER

TIM7 DMA/Interrupt enable register

Offset: 0xc, size: 16, reset: 0x00000000, access: Unspecified

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UDE
rw
UIE
rw
Toggle fields

UIE

Bit 0: Update interrupt enable.

UDE

Bit 8: Update DMA request enable.

TIM7_SR

TIM7 status register

Offset: 0x10, size: 16, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UIF
rw
Toggle fields

UIF

Bit 0: Update interrupt flag This bit is set by hardware on an update event. It is cleared by software. At overflow or underflow regarding the repetition counter value and if UDIS = 0 in the TIMx_CR1 register. When CNT is reinitialized by software using the UG bit in the TIMx_EGR register, if URS1=10 and UDIS1=10 in the TIMx_CR1 register..

TIM7_EGR

TIM7 event generation register

Offset: 0x14, size: 16, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UG
w
Toggle fields

UG

Bit 0: Update generation This bit can be set by software, it is automatically cleared by hardware..

TIM7_CNT

TIM7 counter

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

1/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
UIFCPY
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CNT
rw
Toggle fields

CNT

Bits 0-15: Counter value.

UIFCPY

Bit 31: UIF Copy This bit is a read-only copy of the UIF bit of the TIMx_ISR register. If the UIFREMAP bit in TIMx_CR1 is reset, bit 31 is reserved and read as 0..

TIM7_PSC

TIM7 prescaler

Offset: 0x28, size: 16, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PSC
rw
Toggle fields

PSC

Bits 0-15: Prescaler value The counter clock frequency CK_CNT is equal to f<sub>CK_PSC</sub> / (PSC[15:0] + 1). PSC contains the value to be loaded into the active prescaler register at each update event. (including when the counter is cleared through UG bit of TIMx_EGR register or through trigger controller when configured in reset mode)..

TIM7_ARR

TIM7 auto-reload register

Offset: 0x2c, size: 16, reset: 0x0000FFFF, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ARR
rw
Toggle fields

ARR

Bits 0-15: Prescaler value ARR is the value to be loaded into the actual auto-reload register. Refer to Section123.3.1: Time-base unit on page1596 for more details about ARR update and behavior. The counter is blocked while the auto-reload value is null..

TSC

0x40024000: TSC address block description

16/151 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 TSC_CR
0x4 TSC_IER
0x8 TSC_ICR
0xc TSC_ISR
0x10 TSC_IOHCR
0x18 TSC_IOASCR
0x20 TSC_IOSCR
0x28 TSC_IOCCR
0x30 TSC_IOGCSR
0x34 TSC_IOG1CR
0x38 TSC_IOG2CR
0x3c TSC_IOG3CR
0x40 TSC_IOG4CR
0x44 TSC_IOG5CR
0x48 TSC_IOG6CR
0x4c TSC_IOG7CR
Toggle registers

TSC_CR

TSC control register

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/12 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CTPH
rw
CTPL
rw
SSD
rw
SSE
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SSPSC
rw
PGPSC
rw
MCV
rw
IODEF
rw
SYNCPOL
rw
AM
rw
START
rw
TSCE
rw
Toggle fields

TSCE

Bit 0: Touch sensing controller enable This bit is set and cleared by software to enable/disable the touch sensing controller. Note: When the touch sensing controller is disabled, TSC registers settings have no effect..

START

Bit 1: Start a new acquisition This bit is set by software to start a new acquisition. It is cleared by hardware as soon as the acquisition is complete or by software to cancel the ongoing acquisition..

AM

Bit 2: Acquisition mode This bit is set and cleared by software to select the acquisition mode. Note: This bit must not be modified when an acquisition is ongoing..

SYNCPOL

Bit 3: Synchronization pin polarity This bit is set and cleared by software to select the polarity of the synchronization input pin..

IODEF

Bit 4: I/O Default mode This bit is set and cleared by software. It defines the configuration of all the TSC I/Os when there is no ongoing acquisition. When there is an ongoing acquisition, it defines the configuration of all unused I/Os (not defined as sampling capacitor I/O or as channel I/O). Note: This bit must not be modified when an acquisition is ongoing..

MCV

Bits 5-7: Max count value These bits are set and cleared by software. They define the maximum number of charge transfer pulses that can be generated before a max count error is generated. Note: These bits must not be modified when an acquisition is ongoing..

PGPSC

Bits 12-14: Pulse generator prescaler These bits are set and cleared by software.They select the AHB clock divider used to generate the pulse generator clock (PGCLK). Note: These bits must not be modified when an acquisition is ongoing. Note: Some configurations are forbidden. Refer to the Section119.4.4: Charge transfer acquisition sequence for details..

SSPSC

Bit 15: Spread spectrum prescaler This bit is set and cleared by software. It selects the AHB clock divider used to generate the spread spectrum clock (SSCLK). Note: This bit must not be modified when an acquisition is ongoing..

SSE

Bit 16: Spread spectrum enable This bit is set and cleared by software to enable/disable the spread spectrum feature. Note: This bit must not be modified when an acquisition is ongoing..

SSD

Bits 17-23: Spread spectrum deviation These bits are set and cleared by software. They define the spread spectrum deviation which consists in adding a variable number of periods of the SSCLK clock to the charge transfer pulse high state. ... Note: These bits must not be modified when an acquisition is ongoing..

CTPL

Bits 24-27: Charge transfer pulse low These bits are set and cleared by software. They define the duration of the low state of the charge transfer pulse (transfer of charge from C<sub>X</sub> to C<sub>S</sub>). ... Note: These bits must not be modified when an acquisition is ongoing. Note: Some configurations are forbidden. Refer to the Section119.4.4: Charge transfer acquisition sequence for details..

CTPH

Bits 28-31: Charge transfer pulse high These bits are set and cleared by software. They define the duration of the high state of the charge transfer pulse (charge of C<sub>X</sub>). ... Note: These bits must not be modified when an acquisition is ongoing..

TSC_IER

TSC interrupt enable register

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MCEIE
rw
EOAIE
rw
Toggle fields

EOAIE

Bit 0: End of acquisition interrupt enable This bit is set and cleared by software to enable/disable the end of acquisition interrupt..

MCEIE

Bit 1: Max count error interrupt enable This bit is set and cleared by software to enable/disable the max count error interrupt..

TSC_ICR

TSC interrupt clear register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MCEIC
rw
EOAIC
rw
Toggle fields

EOAIC

Bit 0: End of acquisition interrupt clear This bit is set by software to clear the end of acquisition flag and it is cleared by hardware when the flag is reset. Writing a 0 has no effect..

MCEIC

Bit 1: Max count error interrupt clear This bit is set by software to clear the max count error flag and it is cleared by hardware when the flag is reset. Writing a 0 has no effect..

TSC_ISR

TSC interrupt status register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MCEF
r
EOAF
r
Toggle fields

EOAF

Bit 0: End of acquisition flag This bit is set by hardware when the acquisition of all enabled group is complete (all GxS bits of all enabled analog I/O groups are set or when a max count error is detected). It is cleared by software writing 1 to the bit EOAIC of the TSC_ICR register..

MCEF

Bit 1: Max count error flag This bit is set by hardware as soon as an analog I/O group counter reaches the max count value specified. It is cleared by software writing 1 to the bit MCEIC of the TSC_ICR register..

TSC_IOHCR

TSC I/O hysteresis control register

Offset: 0x10, size: 32, reset: 0xFFFFFFFF, access: Unspecified

0/28 fields covered.

Toggle fields

G1_IO1

Bit 0: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G1_IO2

Bit 1: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G1_IO3

Bit 2: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G1_IO4

Bit 3: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G2_IO1

Bit 4: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G2_IO2

Bit 5: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G2_IO3

Bit 6: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G2_IO4

Bit 7: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G3_IO1

Bit 8: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G3_IO2

Bit 9: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G3_IO3

Bit 10: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G3_IO4

Bit 11: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G4_IO1

Bit 12: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G4_IO2

Bit 13: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G4_IO3

Bit 14: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G4_IO4

Bit 15: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G5_IO1

Bit 16: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G5_IO2

Bit 17: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G5_IO3

Bit 18: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G5_IO4

Bit 19: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G6_IO1

Bit 20: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G6_IO2

Bit 21: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G6_IO3

Bit 22: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G6_IO4

Bit 23: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G7_IO1

Bit 24: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G7_IO2

Bit 25: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G7_IO3

Bit 26: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G7_IO4

Bit 27: Gx_IOy Schmitt trigger hysteresis mode These bits are set and cleared by software to enable/disable the Gx_IOy Schmitt trigger hysteresis. Note: These bits control the I/O Schmitt trigger hysteresis whatever the I/O control mode is (even if controlled by standard GPIO registers)..

TSC_IOASCR

TSC I/O analog switch control register

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/28 fields covered.

Toggle fields

G1_IO1

Bit 0: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G1_IO2

Bit 1: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G1_IO3

Bit 2: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G1_IO4

Bit 3: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G2_IO1

Bit 4: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G2_IO2

Bit 5: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G2_IO3

Bit 6: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G2_IO4

Bit 7: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G3_IO1

Bit 8: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G3_IO2

Bit 9: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G3_IO3

Bit 10: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G3_IO4

Bit 11: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G4_IO1

Bit 12: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G4_IO2

Bit 13: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G4_IO3

Bit 14: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G4_IO4

Bit 15: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G5_IO1

Bit 16: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G5_IO2

Bit 17: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G5_IO3

Bit 18: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G5_IO4

Bit 19: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G6_IO1

Bit 20: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G6_IO2

Bit 21: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G6_IO3

Bit 22: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G6_IO4

Bit 23: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G7_IO1

Bit 24: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G7_IO2

Bit 25: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G7_IO3

Bit 26: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

G7_IO4

Bit 27: Gx_IOy analog switch enable These bits are set and cleared by software to enable/disable the Gx_IOy analog switch. Note: These bits control the I/O analog switch whatever the I/O control mode is (even if controlled by standard GPIO registers)..

TSC_IOSCR

TSC I/O sampling control register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/28 fields covered.

Toggle fields

G1_IO1

Bit 0: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G1_IO2

Bit 1: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G1_IO3

Bit 2: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G1_IO4

Bit 3: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G2_IO1

Bit 4: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G2_IO2

Bit 5: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G2_IO3

Bit 6: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G2_IO4

Bit 7: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G3_IO1

Bit 8: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G3_IO2

Bit 9: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G3_IO3

Bit 10: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G3_IO4

Bit 11: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G4_IO1

Bit 12: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G4_IO2

Bit 13: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G4_IO3

Bit 14: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G4_IO4

Bit 15: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G5_IO1

Bit 16: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G5_IO2

Bit 17: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G5_IO3

Bit 18: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G5_IO4

Bit 19: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G6_IO1

Bit 20: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G6_IO2

Bit 21: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G6_IO3

Bit 22: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G6_IO4

Bit 23: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G7_IO1

Bit 24: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G7_IO2

Bit 25: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G7_IO3

Bit 26: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G7_IO4

Bit 27: Gx_IOy sampling mode These bits are set and cleared by software to configure the Gx_IOy as a sampling capacitor I/O. Only one I/O per analog I/O group must be defined as sampling capacitor. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOSCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

TSC_IOCCR

TSC I/O channel control register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/28 fields covered.

Toggle fields

G1_IO1

Bit 0: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G1_IO2

Bit 1: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G1_IO3

Bit 2: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G1_IO4

Bit 3: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G2_IO1

Bit 4: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G2_IO2

Bit 5: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G2_IO3

Bit 6: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G2_IO4

Bit 7: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G3_IO1

Bit 8: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G3_IO2

Bit 9: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G3_IO3

Bit 10: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G3_IO4

Bit 11: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G4_IO1

Bit 12: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G4_IO2

Bit 13: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G4_IO3

Bit 14: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G4_IO4

Bit 15: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G5_IO1

Bit 16: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G5_IO2

Bit 17: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G5_IO3

Bit 18: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G5_IO4

Bit 19: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G6_IO1

Bit 20: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G6_IO2

Bit 21: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G6_IO3

Bit 22: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G6_IO4

Bit 23: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G7_IO1

Bit 24: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G7_IO2

Bit 25: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G7_IO3

Bit 26: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

G7_IO4

Bit 27: Gx_IOy channel mode These bits are set and cleared by software to configure the Gx_IOy as a channel I/O. Note: These bits must not be modified when an acquisition is ongoing. Note: During the acquisition phase and even if the TSC peripheral alternate function is not enabled, as soon as the TSC_IOCCR bit is set, the corresponding GPIO analog switch is automatically controlled by the touch sensing controller..

TSC_IOGCSR

TSC I/O group control status register

Offset: 0x30, size: 32, reset: 0x00000000, access: Unspecified

7/14 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
G7S
r
G6S
r
G5S
r
G4S
r
G3S
r
G2S
r
G1S
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
G7E
rw
G6E
rw
G5E
rw
G4E
rw
G3E
rw
G2E
rw
G1E
rw
Toggle fields

G1E

Bit 0: Analog I/O group x enable These bits are set and cleared by software to enable/disable the acquisition (counter is counting) on the corresponding analog I/O group x..

G2E

Bit 1: Analog I/O group x enable These bits are set and cleared by software to enable/disable the acquisition (counter is counting) on the corresponding analog I/O group x..

G3E

Bit 2: Analog I/O group x enable These bits are set and cleared by software to enable/disable the acquisition (counter is counting) on the corresponding analog I/O group x..

G4E

Bit 3: Analog I/O group x enable These bits are set and cleared by software to enable/disable the acquisition (counter is counting) on the corresponding analog I/O group x..

G5E

Bit 4: Analog I/O group x enable These bits are set and cleared by software to enable/disable the acquisition (counter is counting) on the corresponding analog I/O group x..

G6E

Bit 5: Analog I/O group x enable These bits are set and cleared by software to enable/disable the acquisition (counter is counting) on the corresponding analog I/O group x..

G7E

Bit 6: Analog I/O group x enable These bits are set and cleared by software to enable/disable the acquisition (counter is counting) on the corresponding analog I/O group x..

G1S

Bit 16: Analog I/O group x status These bits are set by hardware when the acquisition on the corresponding enabled analog I/O group x is complete. They are cleared by hardware when a new acquisition is started. Note: When a max count error is detected the remaining GxS bits of the enabled analog I/O groups are not set..

G2S

Bit 17: Analog I/O group x status These bits are set by hardware when the acquisition on the corresponding enabled analog I/O group x is complete. They are cleared by hardware when a new acquisition is started. Note: When a max count error is detected the remaining GxS bits of the enabled analog I/O groups are not set..

G3S

Bit 18: Analog I/O group x status These bits are set by hardware when the acquisition on the corresponding enabled analog I/O group x is complete. They are cleared by hardware when a new acquisition is started. Note: When a max count error is detected the remaining GxS bits of the enabled analog I/O groups are not set..

G4S

Bit 19: Analog I/O group x status These bits are set by hardware when the acquisition on the corresponding enabled analog I/O group x is complete. They are cleared by hardware when a new acquisition is started. Note: When a max count error is detected the remaining GxS bits of the enabled analog I/O groups are not set..

G5S

Bit 20: Analog I/O group x status These bits are set by hardware when the acquisition on the corresponding enabled analog I/O group x is complete. They are cleared by hardware when a new acquisition is started. Note: When a max count error is detected the remaining GxS bits of the enabled analog I/O groups are not set..

G6S

Bit 21: Analog I/O group x status These bits are set by hardware when the acquisition on the corresponding enabled analog I/O group x is complete. They are cleared by hardware when a new acquisition is started. Note: When a max count error is detected the remaining GxS bits of the enabled analog I/O groups are not set..

G7S

Bit 22: Analog I/O group x status These bits are set by hardware when the acquisition on the corresponding enabled analog I/O group x is complete. They are cleared by hardware when a new acquisition is started. Note: When a max count error is detected the remaining GxS bits of the enabled analog I/O groups are not set..

TSC_IOG1CR

TSC I/O group 1 counter register

Offset: 0x34, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CNT
r
Toggle fields

CNT

Bits 0-13: Counter value These bits represent the number of charge transfer cycles generated on the analog I/O group x to complete its acquisition (voltage across C<sub>S</sub> has reached the threshold)..

TSC_IOG2CR

TSC I/O group 2 counter register

Offset: 0x38, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CNT
r
Toggle fields

CNT

Bits 0-13: Counter value These bits represent the number of charge transfer cycles generated on the analog I/O group x to complete its acquisition (voltage across C<sub>S</sub> has reached the threshold)..

TSC_IOG3CR

TSC I/O group 3 counter register

Offset: 0x3c, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CNT
r
Toggle fields

CNT

Bits 0-13: Counter value These bits represent the number of charge transfer cycles generated on the analog I/O group x to complete its acquisition (voltage across C<sub>S</sub> has reached the threshold)..

TSC_IOG4CR

TSC I/O group 4 counter register

Offset: 0x40, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CNT
r
Toggle fields

CNT

Bits 0-13: Counter value These bits represent the number of charge transfer cycles generated on the analog I/O group x to complete its acquisition (voltage across C<sub>S</sub> has reached the threshold)..

TSC_IOG5CR

TSC I/O group 5 counter register

Offset: 0x44, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CNT
r
Toggle fields

CNT

Bits 0-13: Counter value These bits represent the number of charge transfer cycles generated on the analog I/O group x to complete its acquisition (voltage across C<sub>S</sub> has reached the threshold)..

TSC_IOG6CR

TSC I/O group 6 counter register

Offset: 0x48, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CNT
r
Toggle fields

CNT

Bits 0-13: Counter value These bits represent the number of charge transfer cycles generated on the analog I/O group x to complete its acquisition (voltage across C<sub>S</sub> has reached the threshold)..

TSC_IOG7CR

TSC I/O group 7 counter register

Offset: 0x4c, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CNT
r
Toggle fields

CNT

Bits 0-13: Counter value These bits represent the number of charge transfer cycles generated on the analog I/O group x to complete its acquisition (voltage across C<sub>S</sub> has reached the threshold)..

USART1

0x40013800: USART address block description

53/171 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 USART_CR1
0x0 USART_CR1_ALTERNATE
0x4 USART_CR2
0x8 USART_CR3
0xc USART_BRR
0x10 USART_GTPR
0x14 USART_RTOR
0x18 USART_RQR
0x1c USART_ISR
0x1c USART_ISR_ALTERNATE
0x20 USART_ICR
0x24 USART_RDR
0x28 USART_TDR
0x2c USART_PRESC
Toggle registers

USART_CR1

USART control register 1

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/24 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
RXFFIE
rw
TXFEIE
rw
FIFOEN
rw
M1
rw
EOBIE
rw
RTOIE
rw
DEAT
rw
DEDT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OVER8
rw
CMIE
rw
MME
rw
M0
rw
WAKE
rw
PCE
rw
PS
rw
PEIE
rw
TXFNFIE
rw
TCIE
rw
RXFNEIE
rw
IDLEIE
rw
TE
rw
RE
rw
UESM
rw
UE
rw
Toggle fields

UE

Bit 0: USART enable When this bit is cleared, the USART prescalers and outputs are stopped immediately, and all current operations are discarded. The USART configuration is kept, but all the USART_ISR status flags are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be previously reset and the software must wait for the TC bit in the USART_ISR to be set before resetting the UE bit. Note: The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit. Note: In Smartcard mode, (SCEN = 1), the CK is always available when CLKEN = 1, regardless of the UE bit value..

UESM

Bit 1: USART enable in low-power mode When this bit is cleared, the USART cannot wake up the MCU from low-power mode. When this bit is set, the USART can wake up the MCU from low-power mode. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode, and clear it when exiting low-power mode..

RE

Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..

TE

Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit (0 followed by 1) sends a preamble (idle line) after the current word, except in Smartcard mode. In order to generate an idle character, the TE must not be immediately written to 1. To ensure the required duration, the software can poll the TEACK bit in the USART_ISR register. Note: In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..

IDLEIE

Bit 4: IDLE interrupt enable This bit is set and cleared by software..

RXFNEIE

Bit 5: RXFIFO not empty interrupt enable This bit is set and cleared by software..

TCIE

Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..

TXFNFIE

Bit 7: TXFIFO not full interrupt enable This bit is set and cleared by software..

PEIE

Bit 8: PE interrupt enable This bit is set and cleared by software..

PS

Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the USART is disabled (UE=0)..

PCE

Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and the parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the USART is disabled (UE=0)..

WAKE

Bit 11: Receiver wake-up method This bit determines the USART wake-up method from Mute mode. It is set or cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

M0

Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1)description). This bit can only be written when the USART is disabled (UE=0)..

MME

Bit 13: Mute mode enable This bit enables the USART Mute mode function. When set, the USART can switch between active and Mute mode, as defined by the WAKE bit. It is set and cleared by software..

CMIE

Bit 14: Character match interrupt enable This bit is set and cleared by software..

OVER8

Bit 15: Oversampling mode This bit can only be written when the USART is disabled (UE=0). Note: In LIN, IrDA and Smartcard modes, this bit must be kept cleared..

DEDT

Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). If the USART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

DEAT

Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RTOIE

Bit 26: Receiver timeout interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Section131.4: USART implementation on page1826..

EOBIE

Bit 27: End of Block interrupt enable This bit is set and cleared by software. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

M1

Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = 00: 1 start bit, 8 Data bits, n Stop bit M[1:0] = 01: 1 start bit, 9 Data bits, n Stop bit M[1:0] = 10: 1 start bit, 7 Data bits, n Stop bit This bit can only be written when the USART is disabled (UE=0). Note: In 7-bits data length mode, the Smartcard mode, LIN master mode and auto baud rate (0x7F and 0x55 frames detection) are not supported..

FIFOEN

Bit 29: FIFO mode enable This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0). Note: FIFO mode can be used on standard UART communication, in SPI Master/Slave mode and in Smartcard modes only. It must not be enabled in IrDA and LIN modes..

TXFEIE

Bit 30: TXFIFO empty interrupt enable This bit is set and cleared by software..

RXFFIE

Bit 31: None.

USART_CR1_ALTERNATE

USART control register 1

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/22 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
FIFOEN
rw
M1
rw
EOBIE
rw
RTOIE
rw
DEAT
rw
DEDT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OVER8
rw
CMIE
rw
MME
rw
M0
rw
WAKE
rw
PCE
rw
PS
rw
PEIE
rw
TXEIE
rw
TCIE
rw
RXNEIE
rw
IDLEIE
rw
TE
rw
RE
rw
UESM
rw
UE
rw
Toggle fields

UE

Bit 0: USART enable When this bit is cleared, the USART prescalers and outputs are stopped immediately, and all current operations are discarded. The USART configuration is kept, but all the USART_ISR status flags are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be previously reset and the software must wait for the TC bit in the USART_ISR to be set before resetting the UE bit. Note: The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit. Note: In Smartcard mode, (SCEN = 1), the CK is always available when CLKEN = 1, regardless of the UE bit value..

UESM

Bit 1: USART enable in low-power mode When this bit is cleared, the USART cannot wake up the MCU from low-power mode. When this bit is set, the USART can wake up the MCU from low-power mode. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode, and clear it when exiting low-power mode..

RE

Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..

TE

Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit (0 followed by 1) sends a preamble (idle line) after the current word, except in Smartcard mode. In order to generate an idle character, the TE must not be immediately written to 1. To ensure the required duration, the software can poll the TEACK bit in the USART_ISR register. Note: In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..

IDLEIE

Bit 4: IDLE interrupt enable This bit is set and cleared by software..

RXNEIE

Bit 5: Receive data register not empty This bit is set and cleared by software..

TCIE

Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..

TXEIE

Bit 7: Transmit data register empty This bit is set and cleared by software..

PEIE

Bit 8: PE interrupt enable This bit is set and cleared by software..

PS

Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the USART is disabled (UE=0)..

PCE

Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and the parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the USART is disabled (UE=0)..

WAKE

Bit 11: Receiver wake-up method This bit determines the USART wake-up method from Mute mode. It is set or cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

M0

Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1)description). This bit can only be written when the USART is disabled (UE=0)..

MME

Bit 13: Mute mode enable This bit enables the USART Mute mode function. When set, the USART can switch between active and Mute mode, as defined by the WAKE bit. It is set and cleared by software..

CMIE

Bit 14: Character match interrupt enable This bit is set and cleared by software..

OVER8

Bit 15: Oversampling mode This bit can only be written when the USART is disabled (UE=0). Note: In LIN, IrDA and Smartcard modes, this bit must be kept cleared..

DEDT

Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). If the USART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

DEAT

Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RTOIE

Bit 26: Receiver timeout interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Section131.4: USART implementation on page1826..

EOBIE

Bit 27: End of Block interrupt enable This bit is set and cleared by software. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

M1

Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = 00: 1 start bit, 8 Data bits, n Stop bit M[1:0] = 01: 1 start bit, 9 Data bits, n Stop bit M[1:0] = 10: 1 start bit, 7 Data bits, n Stop bit This bit can only be written when the USART is disabled (UE=0). Note: In 7-bits data length mode, the Smartcard mode, LIN master mode and auto baud rate (0x7F and 0x55 frames detection) are not supported..

FIFOEN

Bit 29: FIFO mode enable This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0). Note: FIFO mode can be used on standard UART communication, in SPI Master/Slave mode and in Smartcard modes only. It must not be enabled in IrDA and LIN modes..

USART_CR2

USART control register 2

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/20 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ADD
rw
RTOEN
rw
ABRMOD
rw
ABREN
rw
MSBFIRST
rw
DATAINV
rw
TXINV
rw
RXINV
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SWAP
rw
LINEN
rw
STOP
rw
CLKEN
rw
CPOL
rw
CPHA
rw
LBCL
rw
LBDIE
rw
LBDL
rw
ADDM7
rw
DIS_NSS
rw
SLVEN
rw
Toggle fields

SLVEN

Bit 0: Synchronous Slave mode enable When the SLVEN bit is set, the Synchronous slave mode is enabled. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

DIS_NSS

Bit 3: When the DIS_NSS bit is set, the NSS pin input is ignored. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

ADDM7

Bit 4: 7-bit Address Detection/4-bit Address Detection This bit is for selection between 4-bit address detection or 7-bit address detection. This bit can only be written when the USART is disabled (UE=0) Note: In 7-bit and 9-bit data modes, the address detection is done on 6-bit and 8-bit address (ADD[5:0] and ADD[7:0]) respectively..

LBDL

Bit 5: LIN break detection length This bit is for selection between 11 bit or 10 bit break detection. This bit can only be written when the USART is disabled (UE=0). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

LBDIE

Bit 6: LIN break detection interrupt enable Break interrupt mask (break detection using break delimiter). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

LBCL

Bit 8: Last bit clock pulse This bit is used to select whether the clock pulse associated with the last data bit transmitted (MSB) has to be output on the CK pin in Synchronous mode. The last bit is the 7th or 8th or 9th data bit transmitted depending on the 7 or 8 or 9 bit format selected by the M bit in the USART_CR1 register. This bit can only be written when the USART is disabled (UE=0). Note: If Synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CPHA

Bit 9: Clock phase This bit is used to select the phase of the clock output on the CK pin in Synchronous mode. It works in conjunction with the CPOL bit to produce the desired clock/data relationship (see Figure1233 and Figure1234) This bit can only be written when the USART is disabled (UE=0). Note: If Synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CPOL

Bit 10: Clock polarity This bit enables the user to select the polarity of the clock output on the CK pin in Synchronous mode. It works in conjunction with the CPHA bit to produce the desired clock/data relationship This bit can only be written when the USART is disabled (UE=0). Note: If Synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CLKEN

Bit 11: Clock enable This bit enables the user to enable the CK pin. This bit can only be written when the USART is disabled (UE=0). Note: If neither Synchronous mode nor Smartcard mode is supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826. In Smartcard mode, in order to provide correctly the CK clock to the smartcard, the steps below must be respected: UE = 0 SCEN = 1 GTPR configuration CLKEN= 1 Note: UE = 1.

STOP

Bits 12-13: stop bits These bits are used for programming the stop bits. This bitfield can only be written when the USART is disabled (UE=0)..

LINEN

Bit 14: LIN mode enable This bit is set and cleared by software. The LIN mode enables the capability to send LIN synchronous breaks (13 low bits) using the SBKRQ bit in the USART_CR1 register, and to detect LIN Sync breaks. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support LIN mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

SWAP

Bit 15: Swap TX/RX pins This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

RXINV

Bit 16: RX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the RX line. This bitfield can only be written when the USART is disabled (UE=0)..

TXINV

Bit 17: TX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the TX line. This bitfield can only be written when the USART is disabled (UE=0)..

DATAINV

Bit 18: Binary data inversion This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

MSBFIRST

Bit 19: Most significant bit first This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

ABREN

Bit 20: Auto baud rate enable This bit is set and cleared by software. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

ABRMOD

Bits 21-22: Auto baud rate mode These bits are set and cleared by software. This bitfield can only be written when ABREN = 0 or the USART is disabled (UE=0). Note: If DATAINV=1 and/or MSBFIRST=1 the patterns must be the same on the line, for example 0xAA for MSBFIRST) Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RTOEN

Bit 23: Receiver timeout enable This bit is set and cleared by software. When this feature is enabled, the RTOF flag in the USART_ISR register is set if the RX line is idle (no reception) for the duration programmed in the RTOR (receiver timeout register). Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

ADD

Bits 24-31: Address of the USART node These bits give the address of the USART node in Mute mode or a character code to be recognized in low-power or Run mode: In Mute mode: they are used in multiprocessor communication to wake up from Mute mode with 4-bit/7-bit address mark detection. The MSB of the character sent by the transmitter should be equal to 1. In 4-bit address mark detection, only ADD[3:0] bits are used. In low-power mode: they are used for wake up from low-power mode on character match. When WUS[1:0] is programmed to 0b00 (WUF active on address match), the wake-up from low-power mode is performed when the received character corresponds to the character programmed through ADD[6:0] or ADD[3:0] bitfield (depending on ADDM7 bit), and WUF interrupt is enabled by setting WUFIE bit. The MSB of the character sent by transmitter should be equal to 1. In Run mode with Mute mode inactive (for example, end-of-block detection in ModBus protocol): the whole received character (8 bits) is compared to ADD[7:0] value and CMF flag is set on match. An interrupt is generated if the CMIE bit is set. These bits can only be written when the reception is disabled (RE1=10) or when the USART is disabled (UE1=10)..

USART_CR3

USART control register 3

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/25 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TXFTCFG
rw
RXFTIE
rw
RXFTCFG
rw
TCBGTIE
rw
TXFTIE
rw
WUFIE
rw
WUS1
rw
WUS0
rw
SCARCNT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DEP
rw
DEM
rw
DDRE
rw
OVRDIS
rw
ONEBIT
rw
CTSIE
rw
CTSE
rw
RTSE
rw
DMAT
rw
DMAR
rw
SCEN
rw
NACK
rw
HDSEL
rw
IRLP
rw
IREN
rw
EIE
rw
Toggle fields

EIE

Bit 0: Error interrupt enable Error Interrupt Enable Bit is required to enable interrupt generation in case of a framing error, overrun error noise flag or SPI slave underrun error (FE=1 or ORE=1 or NE=1or UDR = 1 in the USART_ISR register)..

IREN

Bit 1: IrDA mode enable This bit is set and cleared by software. This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

IRLP

Bit 2: IrDA low-power This bit is used for selecting between normal and low-power IrDA modes This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

HDSEL

Bit 3: Half-duplex selection Selection of Single-wire Half-duplex mode This bit can only be written when the USART is disabled (UE=0)..

NACK

Bit 4: Smartcard NACK enable This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

SCEN

Bit 5: Smartcard mode enable This bit is used for enabling Smartcard mode. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

DMAR

Bit 6: DMA enable receiver This bit is set/reset by software.

DMAT

Bit 7: DMA enable transmitter This bit is set/reset by software.

RTSE

Bit 8: RTS enable This bit can only be written when the USART is disabled (UE=0). Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSE

Bit 9: CTS enable This bit can only be written when the USART is disabled (UE=0) Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSIE

Bit 10: CTS interrupt enable Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

ONEBIT

Bit 11: One sample bit method enable This bit enables the user to select the sample method. When the one sample bit method is selected the noise detection flag (NE) is disabled. This bit can only be written when the USART is disabled (UE=0)..

OVRDIS

Bit 12: Overrun Disable This bit is used to disable the receive overrun detection. the ORE flag is not set and the new received data overwrites the previous content of the USART_RDR register. When FIFO mode is enabled, the RXFIFO is bypassed and data are written directly in USART_RDR register. Even when FIFO management is enabled, the RXNE flag is to be used. This bit can only be written when the USART is disabled (UE=0). Note: This control bit enables checking the communication flow w/o reading the data.

DDRE

Bit 13: DMA Disable on Reception Error This bit can only be written when the USART is disabled (UE=0). Note: The reception errors are: parity error, framing error or noise error..

DEM

Bit 14: Driver enable mode This bit enables the user to activate the external transceiver control, through the DE signal. This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Section131.4: USART implementation on page1826..

DEP

Bit 15: Driver enable polarity selection This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

SCARCNT

Bits 17-19: Smartcard auto-retry count This bitfield specifies the number of retries for transmission and reception in Smartcard mode. In Transmission mode, it specifies the number of automatic retransmission retries, before generating a transmission error (FE bit set). In Reception mode, it specifies the number or erroneous reception trials, before generating a reception error (RXNE/RXFNE and PE bits set). This bitfield must be programmed only when the USART is disabled (UE=0). When the USART is enabled (UE=1), this bitfield may only be written to 0x0, in order to stop retransmission. 0x1 to 0x7: number of automatic retransmission attempts (before signaling error) Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUS0

Bit 20: Wake-up from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (wake-up from low-power mode flag). This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUS1

Bit 21: Wake-up from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (wake-up from low-power mode flag). This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUFIE

Bit 22: Wake-up from low-power mode interrupt enable This bit is set and cleared by software. Note: WUFIE must be set before entering in low-power mode. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

TXFTIE

Bit 23: TXFIFO threshold interrupt enable This bit is set and cleared by software..

TCBGTIE

Bit 24: Transmission Complete before guard time, interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RXFTCFG

Bits 25-27: Receive FIFO threshold configuration Remaining combinations: Reserved.

RXFTIE

Bit 28: RXFIFO threshold interrupt enable This bit is set and cleared by software..

TXFTCFG

Bits 29-31: TXFIFO threshold configuration Remaining combinations: Reserved.

USART_BRR

USART baud rate register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BRR
rw
Toggle fields

BRR

Bits 0-15: USART baud rate BRR[15:4] BRR[15:4] correspond to USARTDIV[15:4] BRR[3:0] When OVER8 = 0, BRR[3:0] = USARTDIV[3:0]. When OVER8 = 1: BRR[2:0] = USARTDIV[3:0] shifted 1 bit to the right. BRR[3] must be kept cleared..

USART_GTPR

USART guard time and prescaler register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
GT
rw
PSC
rw
Toggle fields

PSC

Bits 0-7: Prescaler value PSC[7:0] = IrDA Normal and Low-power baud rate This bitfield is used for programming the prescaler for dividing the USART source clock to achieve the low-power frequency: The source clock is divided by the value given in the register (8 significant bits): ... PSC[4:0]: Prescaler value This bitfield is used for programming the prescaler for dividing the USART source clock to provide the Smartcard clock. The value given in the register (5 significant bits) is multiplied by 2 to give the division factor of the source clock frequency: ... This bitfield can only be written when the USART is disabled (UE=0). Note: Bits [7:5] must be kept cleared if Smartcard mode is used. Note: This bitfield is reserved and forced by hardware to 0 when the Smartcard and IrDA modes are not supported. Refer to Section131.4: USART implementation on page1826..

GT

Bits 8-15: Guard time value This bitfield is used to program the Guard time value in terms of number of baud clock periods. This is used in Smartcard mode. The Transmission Complete flag is set after this guard time value. This bitfield can only be written when the USART is disabled (UE=0). Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

USART_RTOR

USART receiver timeout register

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BLEN
rw
RTO
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RTO
rw
Toggle fields

RTO

Bits 0-23: Receiver timeout value This bitfield gives the Receiver timeout value in terms of number of bit duration. In Standard mode, the RTOF flag is set if, after the last received character, no new start bit is detected for more than the RTO value. In Smartcard mode, this value is used to implement the CWT and BWT. See Smartcard chapter for more details. In the standard, the CWT/BWT measurement is done starting from the start bit of the last received character. Note: This value must only be programmed once per received character..

BLEN

Bits 24-31: Block Length This bitfield gives the Block length in Smartcard T=1 Reception. Its value equals the number of information characters + the length of the Epilogue Field (1-LEC/2-CRC) - 1. Examples: BLEN = 0 -> 0 information characters + LEC BLEN = 1 -> 0 information characters + CRC BLEN = 255 -> 254 information characters + CRC (total 256 characters)) In Smartcard mode, the Block length counter is reset when TXE=0 (TXFE = 0 in case FIFO mode is enabled). This bitfield can be used also in other modes. In this case, the Block length counter is reset when RE=0 (receiver disabled) and/or when the EOBCF bit is written to 1. Note: This value can be programmed after the start of the block reception (using the data from the LEN character in the Prologue Field). It must be programmed only once per received block..

USART_RQR

USART request register

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/5 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TXFRQ
w
RXFRQ
w
MMRQ
w
SBKRQ
w
ABRRQ
w
Toggle fields

ABRRQ

Bit 0: Auto baud rate request Writing 1 to this bit resets the ABRF and ABRE flags in the USART_ISR and requests an automatic baud rate measurement on the next received data frame. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

SBKRQ

Bit 1: Send break request Writing 1 to this bit sets the SBKF flag and request to send a BREAK on the line, as soon as the transmit machine is available. Note: When the application needs to send the break character following all previously inserted data, including the ones not yet transmitted, the software must wait for the TXE flag assertion before setting the SBKRQ bit..

MMRQ

Bit 2: Mute mode request Writing 1 to this bit puts the USART in Mute mode and resets the RWU flag..

RXFRQ

Bit 3: Receive data flush request Writing 1 to this bit empties the entire receive FIFO i.e. clears the bit RXFNE. This enables to discard the received data without reading them, and avoid an overrun condition..

TXFRQ

Bit 4: Transmit data flush request When FIFO mode is disabled, writing 1 to this bit sets the TXE flag. This enables to discard the transmit data. This bit must be used only in Smartcard mode, when data have not been sent due to errors (NACK) and the FE flag is active in the USART_ISR register. If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. When FIFO is enabled, TXFRQ bit is set to flush the whole FIFO. This sets the TXFE flag (Transmit FIFO empty, bit 23 in the USART_ISR register). Flushing the Transmit FIFO is supported in both UART and Smartcard modes. Note: In FIFO mode, the TXFNF flag is reset during the flush request until TxFIFO is empty in order to ensure that no data are written in the data register..

USART_ISR

USART interrupt and status register

Offset: 0x1c, size: 32, reset: 0x000000C0, access: Unspecified

28/28 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TXFT
r
RXFT
r
TCBGT
r
RXFF
r
TXFE
r
REACK
r
TEACK
r
WUF
r
RWU
r
SBKF
r
CMF
r
BUSY
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ABRF
r
ABRE
r
UDR
r
EOBF
r
RTOF
r
CTS
r
CTSIF
r
LBDF
r
TXFNF
r
TC
r
RXFNE
r
IDLE
r
ORE
r
NE
r
FE
r
PE
r
Toggle fields

PE

Bit 0: Parity error This bit is set by hardware when a parity error occurs in Reception mode. It is cleared by software, writing 1 to the PECF in the USART_ICR register. An interrupt is generated if PEIE = 1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..

FE

Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the USART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE1=11 in the USART_CR3 register. Note: This error is associated with the character in the USART_RDR..

NE

Bit 2: Noise detection flag This bit is set by hardware when noise is detected on a received frame. It is cleared by software, writing 1 to the NFCF bit in the USART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXFNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. Note: When the line is noise-free, the NE flag can be disabled by programming the ONEBIT bit to 1 to increase the USART tolerance to deviations (Refer to Section131.5.9: Tolerance of the USART receiver to clock deviation on page1845). Note: This error is associated with the character in the USART_RDR..

ORE

Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the USART_RDR register while RXFF = 1. It is cleared by a software, writing 1 to the ORECF, in the USART_ICR register. An interrupt is generated if RXFNEIE=1 in the USART_CR1 register, or EIE = 1 in the USART_CR3 register. Note: When this bit is set, the USART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. Note: This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the USART_CR3 register..

IDLE

Bit 4: Idle line detected This bit is set by hardware when an Idle Line is detected. An interrupt is generated if IDLEIE=1 in the USART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the USART_ICR register. Note: The IDLE bit is not set again until the RXFNE bit has been set (i.e. a new idle line occurs). Note: If Mute mode is enabled (MME=1), IDLE is set if the USART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..

RXFNE

Bit 5: RXFIFO not empty RXFNE bit is set by hardware when the RXFIFO is not empty, meaning that data can be read from the USART_RDR register. Every read operation from the USART_RDR frees a location in the RXFIFO. RXFNE is cleared when the RXFIFO is empty. The RXFNE flag can also be cleared by writing 1 to the RXFRQ in the USART_RQR register. An interrupt is generated if RXFNEIE=1 in the USART_CR1 register..

TC

Bit 6: Transmission complete This bit indicates that the last data written in the USART_TDR has been transmitted out of the shift register. The TC flag behaves as follows: When TDN = 0, the TC flag is set when the transmission of a frame containing data is complete and when TXE/TXFE is set. When TDN is equal to the number of data in the TXFIFO, the TC flag is set when TXFIFO is empty and TDN is reached. When TDN is greater than the number of data in the TXFIFO, TC remains cleared until the TXFIFO is filled again to reach the programmed number of data to be transferred. When TDN is less than the number of data in the TXFIFO, TC is set when TDN is reached even if the TXFIFO is not empty. An interrupt is generated if TCIE=1 in the USART_CR1 register. TC bit is cleared by software by writing 1 to the TCCF in the USART_ICR register or by writing to the USART_TDR register..

TXFNF

Bit 7: TXFIFO not full TXFNF is set by hardware when TXFIFO is not full meaning that data can be written in the USART_TDR. Every write operation to the USART_TDR places the data in the TXFIFO. This flag remains set until the TXFIFO is full. When the TXFIFO is full, this flag is cleared indicating that data can not be written into the USART_TDR. An interrupt is generated if the TXFNFIE bit =1 in the USART_CR1 register. Note: The TXFNF is kept reset during the flush request until TXFIFO is empty. After sending the flush request (by setting TXFRQ bit), the flag TXFNF must be checked prior to writing in TXFIFO (TXFNF and TXFE is set at the same time). Note: This bit is used during single buffer transmission..

LBDF

Bit 8: LIN break detection flag This bit is set by hardware when the LIN break is detected. It is cleared by software, by writing 1 to the LBDCF in the USART_ICR. An interrupt is generated if LBDIE = 1 in the USART_CR2 register. Note: If the USART does not support LIN mode, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSIF

Bit 9: CTS interrupt flag This bit is set by hardware when the CTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the USART_ICR register. An interrupt is generated if CTSIE=1 in the USART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

CTS

Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the CTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

RTOF

Bit 11: Receiver timeout This bit is set by hardware when the timeout value, programmed in the RTOR register has lapsed, without any communication. It is cleared by software, writing 1 to the RTOCF bit in the USART_ICR register. An interrupt is generated if RTOIE=1 in the USART_CR2 register. In Smartcard mode, the timeout corresponds to the CWT or BWT timings. Note: If a time equal to the value programmed in RTOR register separates 2 characters, RTOF is not set. If this time exceeds this value + 2 sample times (2/16 or 2/8, depending on the oversampling method), RTOF flag is set. Note: The counter counts even if RE = 0 but RTOF is set only when RE = 1. If the timeout has already elapsed when RE is set, then RTOF is set. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and kept at reset value..

EOBF

Bit 12: End of block flag This bit is set by hardware when a complete block has been received (for example T=1 Smartcard mode). The detection is done when the number of received bytes (from the start of the block, including the prologue) is equal or greater than BLEN + 4. An interrupt is generated if EOBIE1=11 in the USART_CR1 register. It is cleared by software, writing 1 to EOBCF in the USART_ICR register. Note: If Smartcard mode is not supported, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

UDR

Bit 13: SPI slave underrun error flag In Slave transmission mode, this flag is set when the first clock pulse for data transmission appears while the software has not yet loaded any value into USART_TDR. This flag is reset by setting UDRCF bit in the USART_ICR register. Note: If the USART does not support the SPI slave mode, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

ABRE

Bit 14: Auto baud rate error This bit is set by hardware if the baud rate measurement failed (baud rate out of range or character comparison failed) It is cleared by software, by writing 1 to the ABRRQ bit in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..

ABRF

Bit 15: Auto baud rate flag This bit is set by hardware when the automatic baud rate has been set (RXFNE is also set, generating an interrupt if RXFNEIE = 1) or when the auto baud rate operation was completed without success (ABRE=1) (ABRE, RXFNE and FE are also set in this case) It is cleared by software, in order to request a new auto baud rate detection, by writing 1 to the ABRRQ in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..

BUSY

Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..

CMF

Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the USART_ICR register. An interrupt is generated if CMIE=1in the USART_CR1 register..

SBKF

Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the USART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..

RWU

Bit 19: Receiver wake-up from Mute mode This bit indicates if the USART is in Mute mode. It is cleared/set by hardware when a wake-up/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the USART_CR1 register. When wake-up on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the USART_RQR register. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUF

Bit 20: Wake-up from low-power mode flag This bit is set by hardware, when a wake-up event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the USART_ICR register. An interrupt is generated if WUFIE=1 in the USART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

TEACK

Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the USART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the USART_CR1 register, in order to respect the TE=0 minimum period..

REACK

Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the USART. It can be used to verify that the USART is ready for reception before entering low-power mode. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

TXFE

Bit 23: TXFIFO Empty This bit is set by hardware when TXFIFO is Empty. When the TXFIFO contains at least one data, this flag is cleared. The TXFE flag can also be set by writing 1 to the bit TXFRQ (bit 4) in the USART_RQR register. An interrupt is generated if the TXFEIE bit =1 (bit 30) in the USART_CR1 register..

RXFF

Bit 24: RXFIFO Full This bit is set by hardware when the number of received data corresponds to RXFIFO1size1+11 (RXFIFO full + 1 data in the USART_RDR register. An interrupt is generated if the RXFFIE bit =1 in the USART_CR1 register..

TCBGT

Bit 25: Transmission complete before guard time flag This bit is set when the last data written in the USART_TDR has been transmitted correctly out of the shift register. It is set by hardware in Smartcard mode, if the transmission of a frame containing data is complete and if the smartcard did not send back any NACK. An interrupt is generated if TCBGTIE=1 in the USART_CR3 register. This bit is cleared by software, by writing 1 to the TCBGTCF in the USART_ICR register or by a write to the USART_TDR register. Note: If the USART does not support the Smartcard mode, this bit is reserved and kept at reset value. If the USART supports the Smartcard mode and the Smartcard mode is enabled, the TCBGT reset value is 1. Refer to Section131.4: USART implementation on page1826..

RXFT

Bit 26: RXFIFO threshold flag This bit is set by hardware when the threshold programmed in RXFTCFG in USART_CR3 register is reached. This means that there are (RXFTCFG - 1) data in the Receive FIFO and one data in the USART_RDR register. An interrupt is generated if the RXFTIE bit =1 (bit 27) in the USART_CR3 register. Note: When the RXFTCFG threshold is configured to 101, RXFT flag is set if 16 data are available i.e. 15 data in the RXFIFO and 1 data in the USART_RDR. Consequently, the 17th received data does not cause an overrun error. The overrun error occurs after receiving the 18th data..

TXFT

Bit 27: TXFIFO threshold flag This bit is set by hardware when the TXFIFO reaches the threshold programmed in TXFTCFG of USART_CR3 register i.e. the TXFIFO contains TXFTCFG empty locations. An interrupt is generated if the TXFTIE bit =1 (bit 31) in the USART_CR3 register..

USART_ISR_ALTERNATE

USART interrupt and status register

Offset: 0x1c, size: 32, reset: 0x000000C0, access: Unspecified

24/24 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TCBGT
r
REACK
r
TEACK
r
WUF
r
RWU
r
SBKF
r
CMF
r
BUSY
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ABRF
r
ABRE
r
UDR
r
EOBF
r
RTOF
r
CTS
r
CTSIF
r
LBDF
r
TXE
r
TC
r
RXNE
r
IDLE
r
ORE
r
NE
r
FE
r
PE
r
Toggle fields

PE

Bit 0: Parity error This bit is set by hardware when a parity error occurs in Reception mode. It is cleared by software, writing 1 to the PECF in the USART_ICR register. An interrupt is generated if PEIE = 1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..

FE

Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the USART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE1=11 in the USART_CR3 register. Note: This error is associated with the character in the USART_RDR..

NE

Bit 2: Noise detection flag This bit is set by hardware when noise is detected on a received frame. It is cleared by software, writing 1 to the NFCF bit in the USART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. Note: When the line is noise-free, the NE flag can be disabled by programming the ONEBIT bit to 1 to increase the USART tolerance to deviations (Refer to Section131.5.9: Tolerance of the USART receiver to clock deviation on page1845). Note: This error is associated with the character in the USART_RDR..

ORE

Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the USART_RDR register while RXNE=1. It is cleared by a software, writing 1 to the ORECF, in the USART_ICR register. An interrupt is generated if RXNEIE=1 in the USART_CR1 register, or EIE = 1 in the USART_CR3 register. Note: When this bit is set, the USART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. Note: This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the USART_CR3 register..

IDLE

Bit 4: Idle line detected This bit is set by hardware when an Idle Line is detected. An interrupt is generated if IDLEIE=1 in the USART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the USART_ICR register. Note: The IDLE bit is not set again until the RXNE bit has been set (i.e. a new idle line occurs). Note: If Mute mode is enabled (MME=1), IDLE is set if the USART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..

RXNE

Bit 5: Read data register not empty RXNE bit is set by hardware when the content of the USART_RDR shift register has been transferred to the USART_RDR register. It is cleared by reading from the USART_RDR register. The RXNE flag can also be cleared by writing 1 to the RXFRQ in the USART_RQR register. An interrupt is generated if RXNEIE=1 in the USART_CR1 register..

TC

Bit 6: Transmission complete This bit indicates that the last data written in the USART_TDR has been transmitted out of the shift register. The TC flag is set when the transmission of a frame containing data is complete and when TXE is set. An interrupt is generated if TCIE=1 in the USART_CR1 register. TC bit is cleared by software by writing 1 to the TCCF in the USART_ICR register or by writing to the USART_TDR register..

TXE

Bit 7: Transmit data register empty TXE is set by hardware when the content of the USART_TDR register has been transferred into the shift register. It is cleared by writing to the USART_TDR register. The TXE flag can also be set by writing 1 to the TXFRQ in the USART_RQR register, in order to discard the data (only in Smartcard T=0 mode, in case of transmission failure). An interrupt is generated if the TXEIE bit =1 in the USART_CR1 register..

LBDF

Bit 8: LIN break detection flag This bit is set by hardware when the LIN break is detected. It is cleared by software, by writing 1 to the LBDCF in the USART_ICR. An interrupt is generated if LBDIE = 1 in the USART_CR2 register. Note: If the USART does not support LIN mode, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSIF

Bit 9: CTS interrupt flag This bit is set by hardware when the CTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the USART_ICR register. An interrupt is generated if CTSIE=1 in the USART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

CTS

Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the CTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

RTOF

Bit 11: Receiver timeout This bit is set by hardware when the timeout value, programmed in the RTOR register has lapsed, without any communication. It is cleared by software, writing 1 to the RTOCF bit in the USART_ICR register. An interrupt is generated if RTOIE=1 in the USART_CR2 register. In Smartcard mode, the timeout corresponds to the CWT or BWT timings. Note: If a time equal to the value programmed in RTOR register separates 2 characters, RTOF is not set. If this time exceeds this value + 2 sample times (2/16 or 2/8, depending on the oversampling method), RTOF flag is set. Note: The counter counts even if RE = 0 but RTOF is set only when RE = 1. If the timeout has already elapsed when RE is set, then RTOF is set. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and kept at reset value..

EOBF

Bit 12: End of block flag This bit is set by hardware when a complete block has been received (for example T=1 Smartcard mode). The detection is done when the number of received bytes (from the start of the block, including the prologue) is equal or greater than BLEN + 4. An interrupt is generated if EOBIE1=11 in the USART_CR1 register. It is cleared by software, writing 1 to EOBCF in the USART_ICR register. Note: If Smartcard mode is not supported, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

UDR

Bit 13: SPI slave underrun error flag In Slave transmission mode, this flag is set when the first clock pulse for data transmission appears while the software has not yet loaded any value into USART_TDR. This flag is reset by setting UDRCF bit in the USART_ICR register. Note: If the USART does not support the SPI slave mode, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

ABRE

Bit 14: Auto baud rate error This bit is set by hardware if the baud rate measurement failed (baud rate out of range or character comparison failed) It is cleared by software, by writing 1 to the ABRRQ bit in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..

ABRF

Bit 15: Auto baud rate flag This bit is set by hardware when the automatic baud rate has been set (RXNE is also set, generating an interrupt if RXNEIE = 1) or when the auto baud rate operation was completed without success (ABRE=1) (ABRE, RXNE and FE are also set in this case) It is cleared by software, in order to request a new auto baud rate detection, by writing 1 to the ABRRQ in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..

BUSY

Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..

CMF

Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the USART_ICR register. An interrupt is generated if CMIE=1in the USART_CR1 register..

SBKF

Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the USART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..

RWU

Bit 19: Receiver wake-up from Mute mode This bit indicates if the USART is in Mute mode. It is cleared/set by hardware when a wake-up/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the USART_CR1 register. When wake-up on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the USART_RQR register. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUF

Bit 20: Wake-up from low-power mode flag This bit is set by hardware, when a wake-up event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the USART_ICR register. An interrupt is generated if WUFIE=1 in the USART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

TEACK

Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the USART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the USART_CR1 register, in order to respect the TE=0 minimum period..

REACK

Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the USART. It can be used to verify that the USART is ready for reception before entering low-power mode. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

TCBGT

Bit 25: Transmission complete before guard time flag This bit is set when the last data written in the USART_TDR has been transmitted correctly out of the shift register. It is set by hardware in Smartcard mode, if the transmission of a frame containing data is complete and if the smartcard did not send back any NACK. An interrupt is generated if TCBGTIE=1 in the USART_CR3 register. This bit is cleared by software, by writing 1 to the TCBGTCF in the USART_ICR register or by a write to the USART_TDR register. Note: If the USART does not support the Smartcard mode, this bit is reserved and kept at reset value. If the USART supports the Smartcard mode and the Smartcard mode is enabled, the TCBGT reset value is 1. Refer to Section131.4: USART implementation on page1826..

USART_ICR

USART interrupt flag clear register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/15 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
WUCF
w
CMCF
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UDRCF
w
EOBCF
w
RTOCF
w
CTSCF
w
LBDCF
w
TCBGTCF
w
TCCF
w
TXFECF
w
IDLECF
w
ORECF
w
NECF
w
FECF
w
PECF
w
Toggle fields

PECF

Bit 0: Parity error clear flag Writing 1 to this bit clears the PE flag in the USART_ISR register..

FECF

Bit 1: Framing error clear flag Writing 1 to this bit clears the FE flag in the USART_ISR register..

NECF

Bit 2: Noise detected clear flag Writing 1 to this bit clears the NE flag in the USART_ISR register..

ORECF

Bit 3: Overrun error clear flag Writing 1 to this bit clears the ORE flag in the USART_ISR register..

IDLECF

Bit 4: Idle line detected clear flag Writing 1 to this bit clears the IDLE flag in the USART_ISR register..

TXFECF

Bit 5: TXFIFO empty clear flag Writing 1 to this bit clears the TXFE flag in the USART_ISR register..

TCCF

Bit 6: Transmission complete clear flag Writing 1 to this bit clears the TC flag in the USART_ISR register..

TCBGTCF

Bit 7: Transmission complete before Guard time clear flag Writing 1 to this bit clears the TCBGT flag in the USART_ISR register..

LBDCF

Bit 8: LIN break detection clear flag Writing 1 to this bit clears the LBDF flag in the USART_ISR register. Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSCF

Bit 9: CTS clear flag Writing 1 to this bit clears the CTSIF flag in the USART_ISR register. Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RTOCF

Bit 11: Receiver timeout clear flag Writing 1 to this bit clears the RTOF flag in the USART_ISR register. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

EOBCF

Bit 12: End of block clear flag Writing 1 to this bit clears the EOBF flag in the USART_ISR register. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

UDRCF

Bit 13: SPI slave underrun clear flag Writing 1 to this bit clears the UDRF flag in the USART_ISR register. Note: If the USART does not support SPI slave mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826.

CMCF

Bit 17: Character match clear flag Writing 1 to this bit clears the CMF flag in the USART_ISR register..

WUCF

Bit 20: Wake-up from low-power mode clear flag Writing 1 to this bit clears the WUF flag in the USART_ISR register. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

USART_RDR

USART receive data register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RDR
r
Toggle fields

RDR

Bits 0-8: Receive data value Contains the received data character. The RDR register provides the parallel interface between the input shift register and the internal bus (see Figure1227). When receiving with the parity enabled, the value read in the MSB bit is the received parity bit..

USART_TDR

USART transmit data register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TDR
rw
Toggle fields

TDR

Bits 0-8: Transmit data value Contains the data character to be transmitted. The USART_TDR register provides the parallel interface between the internal bus and the output shift register (see Figure1227). When transmitting with the parity enabled (PCE bit set to 1 in the USART_CR1 register), the value written in the MSB (bit 7 or bit 8 depending on the data length) has no effect because it is replaced by the parity. Note: This register must be written only when TXE/TXFNF=1..

USART_PRESC

USART prescaler register

Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PRESCALER
rw
Toggle fields

PRESCALER

Bits 0-3: Clock prescaler The USART input clock can be divided by a prescaler factor: Remaining combinations: Reserved Note: When PRESCALER is programmed with a value different of the allowed ones, programmed prescaler value is equal to 1011 i.e. input clock divided by 256..

USART2

0x40004400: USART address block description

53/171 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 USART_CR1
0x0 USART_CR1_ALTERNATE
0x4 USART_CR2
0x8 USART_CR3
0xc USART_BRR
0x10 USART_GTPR
0x14 USART_RTOR
0x18 USART_RQR
0x1c USART_ISR
0x1c USART_ISR_ALTERNATE
0x20 USART_ICR
0x24 USART_RDR
0x28 USART_TDR
0x2c USART_PRESC
Toggle registers

USART_CR1

USART control register 1

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/24 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
RXFFIE
rw
TXFEIE
rw
FIFOEN
rw
M1
rw
EOBIE
rw
RTOIE
rw
DEAT
rw
DEDT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OVER8
rw
CMIE
rw
MME
rw
M0
rw
WAKE
rw
PCE
rw
PS
rw
PEIE
rw
TXFNFIE
rw
TCIE
rw
RXFNEIE
rw
IDLEIE
rw
TE
rw
RE
rw
UESM
rw
UE
rw
Toggle fields

UE

Bit 0: USART enable When this bit is cleared, the USART prescalers and outputs are stopped immediately, and all current operations are discarded. The USART configuration is kept, but all the USART_ISR status flags are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be previously reset and the software must wait for the TC bit in the USART_ISR to be set before resetting the UE bit. Note: The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit. Note: In Smartcard mode, (SCEN = 1), the CK is always available when CLKEN = 1, regardless of the UE bit value..

UESM

Bit 1: USART enable in low-power mode When this bit is cleared, the USART cannot wake up the MCU from low-power mode. When this bit is set, the USART can wake up the MCU from low-power mode. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode, and clear it when exiting low-power mode..

RE

Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..

TE

Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit (0 followed by 1) sends a preamble (idle line) after the current word, except in Smartcard mode. In order to generate an idle character, the TE must not be immediately written to 1. To ensure the required duration, the software can poll the TEACK bit in the USART_ISR register. Note: In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..

IDLEIE

Bit 4: IDLE interrupt enable This bit is set and cleared by software..

RXFNEIE

Bit 5: RXFIFO not empty interrupt enable This bit is set and cleared by software..

TCIE

Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..

TXFNFIE

Bit 7: TXFIFO not full interrupt enable This bit is set and cleared by software..

PEIE

Bit 8: PE interrupt enable This bit is set and cleared by software..

PS

Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the USART is disabled (UE=0)..

PCE

Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and the parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the USART is disabled (UE=0)..

WAKE

Bit 11: Receiver wake-up method This bit determines the USART wake-up method from Mute mode. It is set or cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

M0

Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1)description). This bit can only be written when the USART is disabled (UE=0)..

MME

Bit 13: Mute mode enable This bit enables the USART Mute mode function. When set, the USART can switch between active and Mute mode, as defined by the WAKE bit. It is set and cleared by software..

CMIE

Bit 14: Character match interrupt enable This bit is set and cleared by software..

OVER8

Bit 15: Oversampling mode This bit can only be written when the USART is disabled (UE=0). Note: In LIN, IrDA and Smartcard modes, this bit must be kept cleared..

DEDT

Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). If the USART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

DEAT

Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RTOIE

Bit 26: Receiver timeout interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Section131.4: USART implementation on page1826..

EOBIE

Bit 27: End of Block interrupt enable This bit is set and cleared by software. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

M1

Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = 00: 1 start bit, 8 Data bits, n Stop bit M[1:0] = 01: 1 start bit, 9 Data bits, n Stop bit M[1:0] = 10: 1 start bit, 7 Data bits, n Stop bit This bit can only be written when the USART is disabled (UE=0). Note: In 7-bits data length mode, the Smartcard mode, LIN master mode and auto baud rate (0x7F and 0x55 frames detection) are not supported..

FIFOEN

Bit 29: FIFO mode enable This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0). Note: FIFO mode can be used on standard UART communication, in SPI Master/Slave mode and in Smartcard modes only. It must not be enabled in IrDA and LIN modes..

TXFEIE

Bit 30: TXFIFO empty interrupt enable This bit is set and cleared by software..

RXFFIE

Bit 31: None.

USART_CR1_ALTERNATE

USART control register 1

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/22 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
FIFOEN
rw
M1
rw
EOBIE
rw
RTOIE
rw
DEAT
rw
DEDT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OVER8
rw
CMIE
rw
MME
rw
M0
rw
WAKE
rw
PCE
rw
PS
rw
PEIE
rw
TXEIE
rw
TCIE
rw
RXNEIE
rw
IDLEIE
rw
TE
rw
RE
rw
UESM
rw
UE
rw
Toggle fields

UE

Bit 0: USART enable When this bit is cleared, the USART prescalers and outputs are stopped immediately, and all current operations are discarded. The USART configuration is kept, but all the USART_ISR status flags are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be previously reset and the software must wait for the TC bit in the USART_ISR to be set before resetting the UE bit. Note: The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit. Note: In Smartcard mode, (SCEN = 1), the CK is always available when CLKEN = 1, regardless of the UE bit value..

UESM

Bit 1: USART enable in low-power mode When this bit is cleared, the USART cannot wake up the MCU from low-power mode. When this bit is set, the USART can wake up the MCU from low-power mode. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode, and clear it when exiting low-power mode..

RE

Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..

TE

Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit (0 followed by 1) sends a preamble (idle line) after the current word, except in Smartcard mode. In order to generate an idle character, the TE must not be immediately written to 1. To ensure the required duration, the software can poll the TEACK bit in the USART_ISR register. Note: In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..

IDLEIE

Bit 4: IDLE interrupt enable This bit is set and cleared by software..

RXNEIE

Bit 5: Receive data register not empty This bit is set and cleared by software..

TCIE

Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..

TXEIE

Bit 7: Transmit data register empty This bit is set and cleared by software..

PEIE

Bit 8: PE interrupt enable This bit is set and cleared by software..

PS

Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the USART is disabled (UE=0)..

PCE

Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and the parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the USART is disabled (UE=0)..

WAKE

Bit 11: Receiver wake-up method This bit determines the USART wake-up method from Mute mode. It is set or cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

M0

Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1)description). This bit can only be written when the USART is disabled (UE=0)..

MME

Bit 13: Mute mode enable This bit enables the USART Mute mode function. When set, the USART can switch between active and Mute mode, as defined by the WAKE bit. It is set and cleared by software..

CMIE

Bit 14: Character match interrupt enable This bit is set and cleared by software..

OVER8

Bit 15: Oversampling mode This bit can only be written when the USART is disabled (UE=0). Note: In LIN, IrDA and Smartcard modes, this bit must be kept cleared..

DEDT

Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). If the USART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

DEAT

Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RTOIE

Bit 26: Receiver timeout interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Section131.4: USART implementation on page1826..

EOBIE

Bit 27: End of Block interrupt enable This bit is set and cleared by software. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

M1

Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = 00: 1 start bit, 8 Data bits, n Stop bit M[1:0] = 01: 1 start bit, 9 Data bits, n Stop bit M[1:0] = 10: 1 start bit, 7 Data bits, n Stop bit This bit can only be written when the USART is disabled (UE=0). Note: In 7-bits data length mode, the Smartcard mode, LIN master mode and auto baud rate (0x7F and 0x55 frames detection) are not supported..

FIFOEN

Bit 29: FIFO mode enable This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0). Note: FIFO mode can be used on standard UART communication, in SPI Master/Slave mode and in Smartcard modes only. It must not be enabled in IrDA and LIN modes..

USART_CR2

USART control register 2

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/20 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ADD
rw
RTOEN
rw
ABRMOD
rw
ABREN
rw
MSBFIRST
rw
DATAINV
rw
TXINV
rw
RXINV
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SWAP
rw
LINEN
rw
STOP
rw
CLKEN
rw
CPOL
rw
CPHA
rw
LBCL
rw
LBDIE
rw
LBDL
rw
ADDM7
rw
DIS_NSS
rw
SLVEN
rw
Toggle fields

SLVEN

Bit 0: Synchronous Slave mode enable When the SLVEN bit is set, the Synchronous slave mode is enabled. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

DIS_NSS

Bit 3: When the DIS_NSS bit is set, the NSS pin input is ignored. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

ADDM7

Bit 4: 7-bit Address Detection/4-bit Address Detection This bit is for selection between 4-bit address detection or 7-bit address detection. This bit can only be written when the USART is disabled (UE=0) Note: In 7-bit and 9-bit data modes, the address detection is done on 6-bit and 8-bit address (ADD[5:0] and ADD[7:0]) respectively..

LBDL

Bit 5: LIN break detection length This bit is for selection between 11 bit or 10 bit break detection. This bit can only be written when the USART is disabled (UE=0). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

LBDIE

Bit 6: LIN break detection interrupt enable Break interrupt mask (break detection using break delimiter). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

LBCL

Bit 8: Last bit clock pulse This bit is used to select whether the clock pulse associated with the last data bit transmitted (MSB) has to be output on the CK pin in Synchronous mode. The last bit is the 7th or 8th or 9th data bit transmitted depending on the 7 or 8 or 9 bit format selected by the M bit in the USART_CR1 register. This bit can only be written when the USART is disabled (UE=0). Note: If Synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CPHA

Bit 9: Clock phase This bit is used to select the phase of the clock output on the CK pin in Synchronous mode. It works in conjunction with the CPOL bit to produce the desired clock/data relationship (see Figure1233 and Figure1234) This bit can only be written when the USART is disabled (UE=0). Note: If Synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CPOL

Bit 10: Clock polarity This bit enables the user to select the polarity of the clock output on the CK pin in Synchronous mode. It works in conjunction with the CPHA bit to produce the desired clock/data relationship This bit can only be written when the USART is disabled (UE=0). Note: If Synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CLKEN

Bit 11: Clock enable This bit enables the user to enable the CK pin. This bit can only be written when the USART is disabled (UE=0). Note: If neither Synchronous mode nor Smartcard mode is supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826. In Smartcard mode, in order to provide correctly the CK clock to the smartcard, the steps below must be respected: UE = 0 SCEN = 1 GTPR configuration CLKEN= 1 Note: UE = 1.

STOP

Bits 12-13: stop bits These bits are used for programming the stop bits. This bitfield can only be written when the USART is disabled (UE=0)..

LINEN

Bit 14: LIN mode enable This bit is set and cleared by software. The LIN mode enables the capability to send LIN synchronous breaks (13 low bits) using the SBKRQ bit in the USART_CR1 register, and to detect LIN Sync breaks. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support LIN mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

SWAP

Bit 15: Swap TX/RX pins This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

RXINV

Bit 16: RX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the RX line. This bitfield can only be written when the USART is disabled (UE=0)..

TXINV

Bit 17: TX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the TX line. This bitfield can only be written when the USART is disabled (UE=0)..

DATAINV

Bit 18: Binary data inversion This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

MSBFIRST

Bit 19: Most significant bit first This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

ABREN

Bit 20: Auto baud rate enable This bit is set and cleared by software. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

ABRMOD

Bits 21-22: Auto baud rate mode These bits are set and cleared by software. This bitfield can only be written when ABREN = 0 or the USART is disabled (UE=0). Note: If DATAINV=1 and/or MSBFIRST=1 the patterns must be the same on the line, for example 0xAA for MSBFIRST) Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RTOEN

Bit 23: Receiver timeout enable This bit is set and cleared by software. When this feature is enabled, the RTOF flag in the USART_ISR register is set if the RX line is idle (no reception) for the duration programmed in the RTOR (receiver timeout register). Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

ADD

Bits 24-31: Address of the USART node These bits give the address of the USART node in Mute mode or a character code to be recognized in low-power or Run mode: In Mute mode: they are used in multiprocessor communication to wake up from Mute mode with 4-bit/7-bit address mark detection. The MSB of the character sent by the transmitter should be equal to 1. In 4-bit address mark detection, only ADD[3:0] bits are used. In low-power mode: they are used for wake up from low-power mode on character match. When WUS[1:0] is programmed to 0b00 (WUF active on address match), the wake-up from low-power mode is performed when the received character corresponds to the character programmed through ADD[6:0] or ADD[3:0] bitfield (depending on ADDM7 bit), and WUF interrupt is enabled by setting WUFIE bit. The MSB of the character sent by transmitter should be equal to 1. In Run mode with Mute mode inactive (for example, end-of-block detection in ModBus protocol): the whole received character (8 bits) is compared to ADD[7:0] value and CMF flag is set on match. An interrupt is generated if the CMIE bit is set. These bits can only be written when the reception is disabled (RE1=10) or when the USART is disabled (UE1=10)..

USART_CR3

USART control register 3

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/25 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TXFTCFG
rw
RXFTIE
rw
RXFTCFG
rw
TCBGTIE
rw
TXFTIE
rw
WUFIE
rw
WUS1
rw
WUS0
rw
SCARCNT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DEP
rw
DEM
rw
DDRE
rw
OVRDIS
rw
ONEBIT
rw
CTSIE
rw
CTSE
rw
RTSE
rw
DMAT
rw
DMAR
rw
SCEN
rw
NACK
rw
HDSEL
rw
IRLP
rw
IREN
rw
EIE
rw
Toggle fields

EIE

Bit 0: Error interrupt enable Error Interrupt Enable Bit is required to enable interrupt generation in case of a framing error, overrun error noise flag or SPI slave underrun error (FE=1 or ORE=1 or NE=1or UDR = 1 in the USART_ISR register)..

IREN

Bit 1: IrDA mode enable This bit is set and cleared by software. This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

IRLP

Bit 2: IrDA low-power This bit is used for selecting between normal and low-power IrDA modes This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

HDSEL

Bit 3: Half-duplex selection Selection of Single-wire Half-duplex mode This bit can only be written when the USART is disabled (UE=0)..

NACK

Bit 4: Smartcard NACK enable This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

SCEN

Bit 5: Smartcard mode enable This bit is used for enabling Smartcard mode. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

DMAR

Bit 6: DMA enable receiver This bit is set/reset by software.

DMAT

Bit 7: DMA enable transmitter This bit is set/reset by software.

RTSE

Bit 8: RTS enable This bit can only be written when the USART is disabled (UE=0). Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSE

Bit 9: CTS enable This bit can only be written when the USART is disabled (UE=0) Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSIE

Bit 10: CTS interrupt enable Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

ONEBIT

Bit 11: One sample bit method enable This bit enables the user to select the sample method. When the one sample bit method is selected the noise detection flag (NE) is disabled. This bit can only be written when the USART is disabled (UE=0)..

OVRDIS

Bit 12: Overrun Disable This bit is used to disable the receive overrun detection. the ORE flag is not set and the new received data overwrites the previous content of the USART_RDR register. When FIFO mode is enabled, the RXFIFO is bypassed and data are written directly in USART_RDR register. Even when FIFO management is enabled, the RXNE flag is to be used. This bit can only be written when the USART is disabled (UE=0). Note: This control bit enables checking the communication flow w/o reading the data.

DDRE

Bit 13: DMA Disable on Reception Error This bit can only be written when the USART is disabled (UE=0). Note: The reception errors are: parity error, framing error or noise error..

DEM

Bit 14: Driver enable mode This bit enables the user to activate the external transceiver control, through the DE signal. This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Section131.4: USART implementation on page1826..

DEP

Bit 15: Driver enable polarity selection This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

SCARCNT

Bits 17-19: Smartcard auto-retry count This bitfield specifies the number of retries for transmission and reception in Smartcard mode. In Transmission mode, it specifies the number of automatic retransmission retries, before generating a transmission error (FE bit set). In Reception mode, it specifies the number or erroneous reception trials, before generating a reception error (RXNE/RXFNE and PE bits set). This bitfield must be programmed only when the USART is disabled (UE=0). When the USART is enabled (UE=1), this bitfield may only be written to 0x0, in order to stop retransmission. 0x1 to 0x7: number of automatic retransmission attempts (before signaling error) Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUS0

Bit 20: Wake-up from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (wake-up from low-power mode flag). This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUS1

Bit 21: Wake-up from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (wake-up from low-power mode flag). This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUFIE

Bit 22: Wake-up from low-power mode interrupt enable This bit is set and cleared by software. Note: WUFIE must be set before entering in low-power mode. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

TXFTIE

Bit 23: TXFIFO threshold interrupt enable This bit is set and cleared by software..

TCBGTIE

Bit 24: Transmission Complete before guard time, interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RXFTCFG

Bits 25-27: Receive FIFO threshold configuration Remaining combinations: Reserved.

RXFTIE

Bit 28: RXFIFO threshold interrupt enable This bit is set and cleared by software..

TXFTCFG

Bits 29-31: TXFIFO threshold configuration Remaining combinations: Reserved.

USART_BRR

USART baud rate register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BRR
rw
Toggle fields

BRR

Bits 0-15: USART baud rate BRR[15:4] BRR[15:4] correspond to USARTDIV[15:4] BRR[3:0] When OVER8 = 0, BRR[3:0] = USARTDIV[3:0]. When OVER8 = 1: BRR[2:0] = USARTDIV[3:0] shifted 1 bit to the right. BRR[3] must be kept cleared..

USART_GTPR

USART guard time and prescaler register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
GT
rw
PSC
rw
Toggle fields

PSC

Bits 0-7: Prescaler value PSC[7:0] = IrDA Normal and Low-power baud rate This bitfield is used for programming the prescaler for dividing the USART source clock to achieve the low-power frequency: The source clock is divided by the value given in the register (8 significant bits): ... PSC[4:0]: Prescaler value This bitfield is used for programming the prescaler for dividing the USART source clock to provide the Smartcard clock. The value given in the register (5 significant bits) is multiplied by 2 to give the division factor of the source clock frequency: ... This bitfield can only be written when the USART is disabled (UE=0). Note: Bits [7:5] must be kept cleared if Smartcard mode is used. Note: This bitfield is reserved and forced by hardware to 0 when the Smartcard and IrDA modes are not supported. Refer to Section131.4: USART implementation on page1826..

GT

Bits 8-15: Guard time value This bitfield is used to program the Guard time value in terms of number of baud clock periods. This is used in Smartcard mode. The Transmission Complete flag is set after this guard time value. This bitfield can only be written when the USART is disabled (UE=0). Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

USART_RTOR

USART receiver timeout register

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BLEN
rw
RTO
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RTO
rw
Toggle fields

RTO

Bits 0-23: Receiver timeout value This bitfield gives the Receiver timeout value in terms of number of bit duration. In Standard mode, the RTOF flag is set if, after the last received character, no new start bit is detected for more than the RTO value. In Smartcard mode, this value is used to implement the CWT and BWT. See Smartcard chapter for more details. In the standard, the CWT/BWT measurement is done starting from the start bit of the last received character. Note: This value must only be programmed once per received character..

BLEN

Bits 24-31: Block Length This bitfield gives the Block length in Smartcard T=1 Reception. Its value equals the number of information characters + the length of the Epilogue Field (1-LEC/2-CRC) - 1. Examples: BLEN = 0 -> 0 information characters + LEC BLEN = 1 -> 0 information characters + CRC BLEN = 255 -> 254 information characters + CRC (total 256 characters)) In Smartcard mode, the Block length counter is reset when TXE=0 (TXFE = 0 in case FIFO mode is enabled). This bitfield can be used also in other modes. In this case, the Block length counter is reset when RE=0 (receiver disabled) and/or when the EOBCF bit is written to 1. Note: This value can be programmed after the start of the block reception (using the data from the LEN character in the Prologue Field). It must be programmed only once per received block..

USART_RQR

USART request register

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/5 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TXFRQ
w
RXFRQ
w
MMRQ
w
SBKRQ
w
ABRRQ
w
Toggle fields

ABRRQ

Bit 0: Auto baud rate request Writing 1 to this bit resets the ABRF and ABRE flags in the USART_ISR and requests an automatic baud rate measurement on the next received data frame. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

SBKRQ

Bit 1: Send break request Writing 1 to this bit sets the SBKF flag and request to send a BREAK on the line, as soon as the transmit machine is available. Note: When the application needs to send the break character following all previously inserted data, including the ones not yet transmitted, the software must wait for the TXE flag assertion before setting the SBKRQ bit..

MMRQ

Bit 2: Mute mode request Writing 1 to this bit puts the USART in Mute mode and resets the RWU flag..

RXFRQ

Bit 3: Receive data flush request Writing 1 to this bit empties the entire receive FIFO i.e. clears the bit RXFNE. This enables to discard the received data without reading them, and avoid an overrun condition..

TXFRQ

Bit 4: Transmit data flush request When FIFO mode is disabled, writing 1 to this bit sets the TXE flag. This enables to discard the transmit data. This bit must be used only in Smartcard mode, when data have not been sent due to errors (NACK) and the FE flag is active in the USART_ISR register. If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. When FIFO is enabled, TXFRQ bit is set to flush the whole FIFO. This sets the TXFE flag (Transmit FIFO empty, bit 23 in the USART_ISR register). Flushing the Transmit FIFO is supported in both UART and Smartcard modes. Note: In FIFO mode, the TXFNF flag is reset during the flush request until TxFIFO is empty in order to ensure that no data are written in the data register..

USART_ISR

USART interrupt and status register

Offset: 0x1c, size: 32, reset: 0x000000C0, access: Unspecified

28/28 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TXFT
r
RXFT
r
TCBGT
r
RXFF
r
TXFE
r
REACK
r
TEACK
r
WUF
r
RWU
r
SBKF
r
CMF
r
BUSY
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ABRF
r
ABRE
r
UDR
r
EOBF
r
RTOF
r
CTS
r
CTSIF
r
LBDF
r
TXFNF
r
TC
r
RXFNE
r
IDLE
r
ORE
r
NE
r
FE
r
PE
r
Toggle fields

PE

Bit 0: Parity error This bit is set by hardware when a parity error occurs in Reception mode. It is cleared by software, writing 1 to the PECF in the USART_ICR register. An interrupt is generated if PEIE = 1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..

FE

Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the USART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE1=11 in the USART_CR3 register. Note: This error is associated with the character in the USART_RDR..

NE

Bit 2: Noise detection flag This bit is set by hardware when noise is detected on a received frame. It is cleared by software, writing 1 to the NFCF bit in the USART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXFNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. Note: When the line is noise-free, the NE flag can be disabled by programming the ONEBIT bit to 1 to increase the USART tolerance to deviations (Refer to Section131.5.9: Tolerance of the USART receiver to clock deviation on page1845). Note: This error is associated with the character in the USART_RDR..

ORE

Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the USART_RDR register while RXFF = 1. It is cleared by a software, writing 1 to the ORECF, in the USART_ICR register. An interrupt is generated if RXFNEIE=1 in the USART_CR1 register, or EIE = 1 in the USART_CR3 register. Note: When this bit is set, the USART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. Note: This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the USART_CR3 register..

IDLE

Bit 4: Idle line detected This bit is set by hardware when an Idle Line is detected. An interrupt is generated if IDLEIE=1 in the USART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the USART_ICR register. Note: The IDLE bit is not set again until the RXFNE bit has been set (i.e. a new idle line occurs). Note: If Mute mode is enabled (MME=1), IDLE is set if the USART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..

RXFNE

Bit 5: RXFIFO not empty RXFNE bit is set by hardware when the RXFIFO is not empty, meaning that data can be read from the USART_RDR register. Every read operation from the USART_RDR frees a location in the RXFIFO. RXFNE is cleared when the RXFIFO is empty. The RXFNE flag can also be cleared by writing 1 to the RXFRQ in the USART_RQR register. An interrupt is generated if RXFNEIE=1 in the USART_CR1 register..

TC

Bit 6: Transmission complete This bit indicates that the last data written in the USART_TDR has been transmitted out of the shift register. The TC flag behaves as follows: When TDN = 0, the TC flag is set when the transmission of a frame containing data is complete and when TXE/TXFE is set. When TDN is equal to the number of data in the TXFIFO, the TC flag is set when TXFIFO is empty and TDN is reached. When TDN is greater than the number of data in the TXFIFO, TC remains cleared until the TXFIFO is filled again to reach the programmed number of data to be transferred. When TDN is less than the number of data in the TXFIFO, TC is set when TDN is reached even if the TXFIFO is not empty. An interrupt is generated if TCIE=1 in the USART_CR1 register. TC bit is cleared by software by writing 1 to the TCCF in the USART_ICR register or by writing to the USART_TDR register..

TXFNF

Bit 7: TXFIFO not full TXFNF is set by hardware when TXFIFO is not full meaning that data can be written in the USART_TDR. Every write operation to the USART_TDR places the data in the TXFIFO. This flag remains set until the TXFIFO is full. When the TXFIFO is full, this flag is cleared indicating that data can not be written into the USART_TDR. An interrupt is generated if the TXFNFIE bit =1 in the USART_CR1 register. Note: The TXFNF is kept reset during the flush request until TXFIFO is empty. After sending the flush request (by setting TXFRQ bit), the flag TXFNF must be checked prior to writing in TXFIFO (TXFNF and TXFE is set at the same time). Note: This bit is used during single buffer transmission..

LBDF

Bit 8: LIN break detection flag This bit is set by hardware when the LIN break is detected. It is cleared by software, by writing 1 to the LBDCF in the USART_ICR. An interrupt is generated if LBDIE = 1 in the USART_CR2 register. Note: If the USART does not support LIN mode, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSIF

Bit 9: CTS interrupt flag This bit is set by hardware when the CTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the USART_ICR register. An interrupt is generated if CTSIE=1 in the USART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

CTS

Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the CTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

RTOF

Bit 11: Receiver timeout This bit is set by hardware when the timeout value, programmed in the RTOR register has lapsed, without any communication. It is cleared by software, writing 1 to the RTOCF bit in the USART_ICR register. An interrupt is generated if RTOIE=1 in the USART_CR2 register. In Smartcard mode, the timeout corresponds to the CWT or BWT timings. Note: If a time equal to the value programmed in RTOR register separates 2 characters, RTOF is not set. If this time exceeds this value + 2 sample times (2/16 or 2/8, depending on the oversampling method), RTOF flag is set. Note: The counter counts even if RE = 0 but RTOF is set only when RE = 1. If the timeout has already elapsed when RE is set, then RTOF is set. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and kept at reset value..

EOBF

Bit 12: End of block flag This bit is set by hardware when a complete block has been received (for example T=1 Smartcard mode). The detection is done when the number of received bytes (from the start of the block, including the prologue) is equal or greater than BLEN + 4. An interrupt is generated if EOBIE1=11 in the USART_CR1 register. It is cleared by software, writing 1 to EOBCF in the USART_ICR register. Note: If Smartcard mode is not supported, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

UDR

Bit 13: SPI slave underrun error flag In Slave transmission mode, this flag is set when the first clock pulse for data transmission appears while the software has not yet loaded any value into USART_TDR. This flag is reset by setting UDRCF bit in the USART_ICR register. Note: If the USART does not support the SPI slave mode, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

ABRE

Bit 14: Auto baud rate error This bit is set by hardware if the baud rate measurement failed (baud rate out of range or character comparison failed) It is cleared by software, by writing 1 to the ABRRQ bit in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..

ABRF

Bit 15: Auto baud rate flag This bit is set by hardware when the automatic baud rate has been set (RXFNE is also set, generating an interrupt if RXFNEIE = 1) or when the auto baud rate operation was completed without success (ABRE=1) (ABRE, RXFNE and FE are also set in this case) It is cleared by software, in order to request a new auto baud rate detection, by writing 1 to the ABRRQ in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..

BUSY

Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..

CMF

Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the USART_ICR register. An interrupt is generated if CMIE=1in the USART_CR1 register..

SBKF

Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the USART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..

RWU

Bit 19: Receiver wake-up from Mute mode This bit indicates if the USART is in Mute mode. It is cleared/set by hardware when a wake-up/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the USART_CR1 register. When wake-up on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the USART_RQR register. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUF

Bit 20: Wake-up from low-power mode flag This bit is set by hardware, when a wake-up event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the USART_ICR register. An interrupt is generated if WUFIE=1 in the USART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

TEACK

Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the USART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the USART_CR1 register, in order to respect the TE=0 minimum period..

REACK

Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the USART. It can be used to verify that the USART is ready for reception before entering low-power mode. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

TXFE

Bit 23: TXFIFO Empty This bit is set by hardware when TXFIFO is Empty. When the TXFIFO contains at least one data, this flag is cleared. The TXFE flag can also be set by writing 1 to the bit TXFRQ (bit 4) in the USART_RQR register. An interrupt is generated if the TXFEIE bit =1 (bit 30) in the USART_CR1 register..

RXFF

Bit 24: RXFIFO Full This bit is set by hardware when the number of received data corresponds to RXFIFO1size1+11 (RXFIFO full + 1 data in the USART_RDR register. An interrupt is generated if the RXFFIE bit =1 in the USART_CR1 register..

TCBGT

Bit 25: Transmission complete before guard time flag This bit is set when the last data written in the USART_TDR has been transmitted correctly out of the shift register. It is set by hardware in Smartcard mode, if the transmission of a frame containing data is complete and if the smartcard did not send back any NACK. An interrupt is generated if TCBGTIE=1 in the USART_CR3 register. This bit is cleared by software, by writing 1 to the TCBGTCF in the USART_ICR register or by a write to the USART_TDR register. Note: If the USART does not support the Smartcard mode, this bit is reserved and kept at reset value. If the USART supports the Smartcard mode and the Smartcard mode is enabled, the TCBGT reset value is 1. Refer to Section131.4: USART implementation on page1826..

RXFT

Bit 26: RXFIFO threshold flag This bit is set by hardware when the threshold programmed in RXFTCFG in USART_CR3 register is reached. This means that there are (RXFTCFG - 1) data in the Receive FIFO and one data in the USART_RDR register. An interrupt is generated if the RXFTIE bit =1 (bit 27) in the USART_CR3 register. Note: When the RXFTCFG threshold is configured to 101, RXFT flag is set if 16 data are available i.e. 15 data in the RXFIFO and 1 data in the USART_RDR. Consequently, the 17th received data does not cause an overrun error. The overrun error occurs after receiving the 18th data..

TXFT

Bit 27: TXFIFO threshold flag This bit is set by hardware when the TXFIFO reaches the threshold programmed in TXFTCFG of USART_CR3 register i.e. the TXFIFO contains TXFTCFG empty locations. An interrupt is generated if the TXFTIE bit =1 (bit 31) in the USART_CR3 register..

USART_ISR_ALTERNATE

USART interrupt and status register

Offset: 0x1c, size: 32, reset: 0x000000C0, access: Unspecified

24/24 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TCBGT
r
REACK
r
TEACK
r
WUF
r
RWU
r
SBKF
r
CMF
r
BUSY
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ABRF
r
ABRE
r
UDR
r
EOBF
r
RTOF
r
CTS
r
CTSIF
r
LBDF
r
TXE
r
TC
r
RXNE
r
IDLE
r
ORE
r
NE
r
FE
r
PE
r
Toggle fields

PE

Bit 0: Parity error This bit is set by hardware when a parity error occurs in Reception mode. It is cleared by software, writing 1 to the PECF in the USART_ICR register. An interrupt is generated if PEIE = 1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..

FE

Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the USART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE1=11 in the USART_CR3 register. Note: This error is associated with the character in the USART_RDR..

NE

Bit 2: Noise detection flag This bit is set by hardware when noise is detected on a received frame. It is cleared by software, writing 1 to the NFCF bit in the USART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. Note: When the line is noise-free, the NE flag can be disabled by programming the ONEBIT bit to 1 to increase the USART tolerance to deviations (Refer to Section131.5.9: Tolerance of the USART receiver to clock deviation on page1845). Note: This error is associated with the character in the USART_RDR..

ORE

Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the USART_RDR register while RXNE=1. It is cleared by a software, writing 1 to the ORECF, in the USART_ICR register. An interrupt is generated if RXNEIE=1 in the USART_CR1 register, or EIE = 1 in the USART_CR3 register. Note: When this bit is set, the USART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. Note: This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the USART_CR3 register..

IDLE

Bit 4: Idle line detected This bit is set by hardware when an Idle Line is detected. An interrupt is generated if IDLEIE=1 in the USART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the USART_ICR register. Note: The IDLE bit is not set again until the RXNE bit has been set (i.e. a new idle line occurs). Note: If Mute mode is enabled (MME=1), IDLE is set if the USART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..

RXNE

Bit 5: Read data register not empty RXNE bit is set by hardware when the content of the USART_RDR shift register has been transferred to the USART_RDR register. It is cleared by reading from the USART_RDR register. The RXNE flag can also be cleared by writing 1 to the RXFRQ in the USART_RQR register. An interrupt is generated if RXNEIE=1 in the USART_CR1 register..

TC

Bit 6: Transmission complete This bit indicates that the last data written in the USART_TDR has been transmitted out of the shift register. The TC flag is set when the transmission of a frame containing data is complete and when TXE is set. An interrupt is generated if TCIE=1 in the USART_CR1 register. TC bit is cleared by software by writing 1 to the TCCF in the USART_ICR register or by writing to the USART_TDR register..

TXE

Bit 7: Transmit data register empty TXE is set by hardware when the content of the USART_TDR register has been transferred into the shift register. It is cleared by writing to the USART_TDR register. The TXE flag can also be set by writing 1 to the TXFRQ in the USART_RQR register, in order to discard the data (only in Smartcard T=0 mode, in case of transmission failure). An interrupt is generated if the TXEIE bit =1 in the USART_CR1 register..

LBDF

Bit 8: LIN break detection flag This bit is set by hardware when the LIN break is detected. It is cleared by software, by writing 1 to the LBDCF in the USART_ICR. An interrupt is generated if LBDIE = 1 in the USART_CR2 register. Note: If the USART does not support LIN mode, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSIF

Bit 9: CTS interrupt flag This bit is set by hardware when the CTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the USART_ICR register. An interrupt is generated if CTSIE=1 in the USART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

CTS

Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the CTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

RTOF

Bit 11: Receiver timeout This bit is set by hardware when the timeout value, programmed in the RTOR register has lapsed, without any communication. It is cleared by software, writing 1 to the RTOCF bit in the USART_ICR register. An interrupt is generated if RTOIE=1 in the USART_CR2 register. In Smartcard mode, the timeout corresponds to the CWT or BWT timings. Note: If a time equal to the value programmed in RTOR register separates 2 characters, RTOF is not set. If this time exceeds this value + 2 sample times (2/16 or 2/8, depending on the oversampling method), RTOF flag is set. Note: The counter counts even if RE = 0 but RTOF is set only when RE = 1. If the timeout has already elapsed when RE is set, then RTOF is set. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and kept at reset value..

EOBF

Bit 12: End of block flag This bit is set by hardware when a complete block has been received (for example T=1 Smartcard mode). The detection is done when the number of received bytes (from the start of the block, including the prologue) is equal or greater than BLEN + 4. An interrupt is generated if EOBIE1=11 in the USART_CR1 register. It is cleared by software, writing 1 to EOBCF in the USART_ICR register. Note: If Smartcard mode is not supported, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

UDR

Bit 13: SPI slave underrun error flag In Slave transmission mode, this flag is set when the first clock pulse for data transmission appears while the software has not yet loaded any value into USART_TDR. This flag is reset by setting UDRCF bit in the USART_ICR register. Note: If the USART does not support the SPI slave mode, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

ABRE

Bit 14: Auto baud rate error This bit is set by hardware if the baud rate measurement failed (baud rate out of range or character comparison failed) It is cleared by software, by writing 1 to the ABRRQ bit in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..

ABRF

Bit 15: Auto baud rate flag This bit is set by hardware when the automatic baud rate has been set (RXNE is also set, generating an interrupt if RXNEIE = 1) or when the auto baud rate operation was completed without success (ABRE=1) (ABRE, RXNE and FE are also set in this case) It is cleared by software, in order to request a new auto baud rate detection, by writing 1 to the ABRRQ in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..

BUSY

Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..

CMF

Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the USART_ICR register. An interrupt is generated if CMIE=1in the USART_CR1 register..

SBKF

Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the USART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..

RWU

Bit 19: Receiver wake-up from Mute mode This bit indicates if the USART is in Mute mode. It is cleared/set by hardware when a wake-up/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the USART_CR1 register. When wake-up on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the USART_RQR register. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUF

Bit 20: Wake-up from low-power mode flag This bit is set by hardware, when a wake-up event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the USART_ICR register. An interrupt is generated if WUFIE=1 in the USART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

TEACK

Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the USART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the USART_CR1 register, in order to respect the TE=0 minimum period..

REACK

Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the USART. It can be used to verify that the USART is ready for reception before entering low-power mode. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

TCBGT

Bit 25: Transmission complete before guard time flag This bit is set when the last data written in the USART_TDR has been transmitted correctly out of the shift register. It is set by hardware in Smartcard mode, if the transmission of a frame containing data is complete and if the smartcard did not send back any NACK. An interrupt is generated if TCBGTIE=1 in the USART_CR3 register. This bit is cleared by software, by writing 1 to the TCBGTCF in the USART_ICR register or by a write to the USART_TDR register. Note: If the USART does not support the Smartcard mode, this bit is reserved and kept at reset value. If the USART supports the Smartcard mode and the Smartcard mode is enabled, the TCBGT reset value is 1. Refer to Section131.4: USART implementation on page1826..

USART_ICR

USART interrupt flag clear register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/15 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
WUCF
w
CMCF
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UDRCF
w
EOBCF
w
RTOCF
w
CTSCF
w
LBDCF
w
TCBGTCF
w
TCCF
w
TXFECF
w
IDLECF
w
ORECF
w
NECF
w
FECF
w
PECF
w
Toggle fields

PECF

Bit 0: Parity error clear flag Writing 1 to this bit clears the PE flag in the USART_ISR register..

FECF

Bit 1: Framing error clear flag Writing 1 to this bit clears the FE flag in the USART_ISR register..

NECF

Bit 2: Noise detected clear flag Writing 1 to this bit clears the NE flag in the USART_ISR register..

ORECF

Bit 3: Overrun error clear flag Writing 1 to this bit clears the ORE flag in the USART_ISR register..

IDLECF

Bit 4: Idle line detected clear flag Writing 1 to this bit clears the IDLE flag in the USART_ISR register..

TXFECF

Bit 5: TXFIFO empty clear flag Writing 1 to this bit clears the TXFE flag in the USART_ISR register..

TCCF

Bit 6: Transmission complete clear flag Writing 1 to this bit clears the TC flag in the USART_ISR register..

TCBGTCF

Bit 7: Transmission complete before Guard time clear flag Writing 1 to this bit clears the TCBGT flag in the USART_ISR register..

LBDCF

Bit 8: LIN break detection clear flag Writing 1 to this bit clears the LBDF flag in the USART_ISR register. Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSCF

Bit 9: CTS clear flag Writing 1 to this bit clears the CTSIF flag in the USART_ISR register. Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RTOCF

Bit 11: Receiver timeout clear flag Writing 1 to this bit clears the RTOF flag in the USART_ISR register. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

EOBCF

Bit 12: End of block clear flag Writing 1 to this bit clears the EOBF flag in the USART_ISR register. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

UDRCF

Bit 13: SPI slave underrun clear flag Writing 1 to this bit clears the UDRF flag in the USART_ISR register. Note: If the USART does not support SPI slave mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826.

CMCF

Bit 17: Character match clear flag Writing 1 to this bit clears the CMF flag in the USART_ISR register..

WUCF

Bit 20: Wake-up from low-power mode clear flag Writing 1 to this bit clears the WUF flag in the USART_ISR register. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

USART_RDR

USART receive data register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RDR
r
Toggle fields

RDR

Bits 0-8: Receive data value Contains the received data character. The RDR register provides the parallel interface between the input shift register and the internal bus (see Figure1227). When receiving with the parity enabled, the value read in the MSB bit is the received parity bit..

USART_TDR

USART transmit data register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TDR
rw
Toggle fields

TDR

Bits 0-8: Transmit data value Contains the data character to be transmitted. The USART_TDR register provides the parallel interface between the internal bus and the output shift register (see Figure1227). When transmitting with the parity enabled (PCE bit set to 1 in the USART_CR1 register), the value written in the MSB (bit 7 or bit 8 depending on the data length) has no effect because it is replaced by the parity. Note: This register must be written only when TXE/TXFNF=1..

USART_PRESC

USART prescaler register

Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PRESCALER
rw
Toggle fields

PRESCALER

Bits 0-3: Clock prescaler The USART input clock can be divided by a prescaler factor: Remaining combinations: Reserved Note: When PRESCALER is programmed with a value different of the allowed ones, programmed prescaler value is equal to 1011 i.e. input clock divided by 256..

USART3

0x40004800: USART address block description

53/171 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 USART_CR1
0x0 USART_CR1_ALTERNATE
0x4 USART_CR2
0x8 USART_CR3
0xc USART_BRR
0x10 USART_GTPR
0x14 USART_RTOR
0x18 USART_RQR
0x1c USART_ISR
0x1c USART_ISR_ALTERNATE
0x20 USART_ICR
0x24 USART_RDR
0x28 USART_TDR
0x2c USART_PRESC
Toggle registers

USART_CR1

USART control register 1

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/24 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
RXFFIE
rw
TXFEIE
rw
FIFOEN
rw
M1
rw
EOBIE
rw
RTOIE
rw
DEAT
rw
DEDT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OVER8
rw
CMIE
rw
MME
rw
M0
rw
WAKE
rw
PCE
rw
PS
rw
PEIE
rw
TXFNFIE
rw
TCIE
rw
RXFNEIE
rw
IDLEIE
rw
TE
rw
RE
rw
UESM
rw
UE
rw
Toggle fields

UE

Bit 0: USART enable When this bit is cleared, the USART prescalers and outputs are stopped immediately, and all current operations are discarded. The USART configuration is kept, but all the USART_ISR status flags are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be previously reset and the software must wait for the TC bit in the USART_ISR to be set before resetting the UE bit. Note: The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit. Note: In Smartcard mode, (SCEN = 1), the CK is always available when CLKEN = 1, regardless of the UE bit value..

UESM

Bit 1: USART enable in low-power mode When this bit is cleared, the USART cannot wake up the MCU from low-power mode. When this bit is set, the USART can wake up the MCU from low-power mode. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode, and clear it when exiting low-power mode..

RE

Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..

TE

Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit (0 followed by 1) sends a preamble (idle line) after the current word, except in Smartcard mode. In order to generate an idle character, the TE must not be immediately written to 1. To ensure the required duration, the software can poll the TEACK bit in the USART_ISR register. Note: In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..

IDLEIE

Bit 4: IDLE interrupt enable This bit is set and cleared by software..

RXFNEIE

Bit 5: RXFIFO not empty interrupt enable This bit is set and cleared by software..

TCIE

Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..

TXFNFIE

Bit 7: TXFIFO not full interrupt enable This bit is set and cleared by software..

PEIE

Bit 8: PE interrupt enable This bit is set and cleared by software..

PS

Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the USART is disabled (UE=0)..

PCE

Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and the parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the USART is disabled (UE=0)..

WAKE

Bit 11: Receiver wake-up method This bit determines the USART wake-up method from Mute mode. It is set or cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

M0

Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1)description). This bit can only be written when the USART is disabled (UE=0)..

MME

Bit 13: Mute mode enable This bit enables the USART Mute mode function. When set, the USART can switch between active and Mute mode, as defined by the WAKE bit. It is set and cleared by software..

CMIE

Bit 14: Character match interrupt enable This bit is set and cleared by software..

OVER8

Bit 15: Oversampling mode This bit can only be written when the USART is disabled (UE=0). Note: In LIN, IrDA and Smartcard modes, this bit must be kept cleared..

DEDT

Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). If the USART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

DEAT

Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RTOIE

Bit 26: Receiver timeout interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Section131.4: USART implementation on page1826..

EOBIE

Bit 27: End of Block interrupt enable This bit is set and cleared by software. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

M1

Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = 00: 1 start bit, 8 Data bits, n Stop bit M[1:0] = 01: 1 start bit, 9 Data bits, n Stop bit M[1:0] = 10: 1 start bit, 7 Data bits, n Stop bit This bit can only be written when the USART is disabled (UE=0). Note: In 7-bits data length mode, the Smartcard mode, LIN master mode and auto baud rate (0x7F and 0x55 frames detection) are not supported..

FIFOEN

Bit 29: FIFO mode enable This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0). Note: FIFO mode can be used on standard UART communication, in SPI Master/Slave mode and in Smartcard modes only. It must not be enabled in IrDA and LIN modes..

TXFEIE

Bit 30: TXFIFO empty interrupt enable This bit is set and cleared by software..

RXFFIE

Bit 31: None.

USART_CR1_ALTERNATE

USART control register 1

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/22 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
FIFOEN
rw
M1
rw
EOBIE
rw
RTOIE
rw
DEAT
rw
DEDT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OVER8
rw
CMIE
rw
MME
rw
M0
rw
WAKE
rw
PCE
rw
PS
rw
PEIE
rw
TXEIE
rw
TCIE
rw
RXNEIE
rw
IDLEIE
rw
TE
rw
RE
rw
UESM
rw
UE
rw
Toggle fields

UE

Bit 0: USART enable When this bit is cleared, the USART prescalers and outputs are stopped immediately, and all current operations are discarded. The USART configuration is kept, but all the USART_ISR status flags are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be previously reset and the software must wait for the TC bit in the USART_ISR to be set before resetting the UE bit. Note: The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit. Note: In Smartcard mode, (SCEN = 1), the CK is always available when CLKEN = 1, regardless of the UE bit value..

UESM

Bit 1: USART enable in low-power mode When this bit is cleared, the USART cannot wake up the MCU from low-power mode. When this bit is set, the USART can wake up the MCU from low-power mode. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode, and clear it when exiting low-power mode..

RE

Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..

TE

Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit (0 followed by 1) sends a preamble (idle line) after the current word, except in Smartcard mode. In order to generate an idle character, the TE must not be immediately written to 1. To ensure the required duration, the software can poll the TEACK bit in the USART_ISR register. Note: In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..

IDLEIE

Bit 4: IDLE interrupt enable This bit is set and cleared by software..

RXNEIE

Bit 5: Receive data register not empty This bit is set and cleared by software..

TCIE

Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..

TXEIE

Bit 7: Transmit data register empty This bit is set and cleared by software..

PEIE

Bit 8: PE interrupt enable This bit is set and cleared by software..

PS

Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the USART is disabled (UE=0)..

PCE

Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and the parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the USART is disabled (UE=0)..

WAKE

Bit 11: Receiver wake-up method This bit determines the USART wake-up method from Mute mode. It is set or cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

M0

Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1)description). This bit can only be written when the USART is disabled (UE=0)..

MME

Bit 13: Mute mode enable This bit enables the USART Mute mode function. When set, the USART can switch between active and Mute mode, as defined by the WAKE bit. It is set and cleared by software..

CMIE

Bit 14: Character match interrupt enable This bit is set and cleared by software..

OVER8

Bit 15: Oversampling mode This bit can only be written when the USART is disabled (UE=0). Note: In LIN, IrDA and Smartcard modes, this bit must be kept cleared..

DEDT

Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). If the USART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

DEAT

Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RTOIE

Bit 26: Receiver timeout interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Section131.4: USART implementation on page1826..

EOBIE

Bit 27: End of Block interrupt enable This bit is set and cleared by software. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

M1

Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = 00: 1 start bit, 8 Data bits, n Stop bit M[1:0] = 01: 1 start bit, 9 Data bits, n Stop bit M[1:0] = 10: 1 start bit, 7 Data bits, n Stop bit This bit can only be written when the USART is disabled (UE=0). Note: In 7-bits data length mode, the Smartcard mode, LIN master mode and auto baud rate (0x7F and 0x55 frames detection) are not supported..

FIFOEN

Bit 29: FIFO mode enable This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0). Note: FIFO mode can be used on standard UART communication, in SPI Master/Slave mode and in Smartcard modes only. It must not be enabled in IrDA and LIN modes..

USART_CR2

USART control register 2

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/20 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ADD
rw
RTOEN
rw
ABRMOD
rw
ABREN
rw
MSBFIRST
rw
DATAINV
rw
TXINV
rw
RXINV
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SWAP
rw
LINEN
rw
STOP
rw
CLKEN
rw
CPOL
rw
CPHA
rw
LBCL
rw
LBDIE
rw
LBDL
rw
ADDM7
rw
DIS_NSS
rw
SLVEN
rw
Toggle fields

SLVEN

Bit 0: Synchronous Slave mode enable When the SLVEN bit is set, the Synchronous slave mode is enabled. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

DIS_NSS

Bit 3: When the DIS_NSS bit is set, the NSS pin input is ignored. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

ADDM7

Bit 4: 7-bit Address Detection/4-bit Address Detection This bit is for selection between 4-bit address detection or 7-bit address detection. This bit can only be written when the USART is disabled (UE=0) Note: In 7-bit and 9-bit data modes, the address detection is done on 6-bit and 8-bit address (ADD[5:0] and ADD[7:0]) respectively..

LBDL

Bit 5: LIN break detection length This bit is for selection between 11 bit or 10 bit break detection. This bit can only be written when the USART is disabled (UE=0). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

LBDIE

Bit 6: LIN break detection interrupt enable Break interrupt mask (break detection using break delimiter). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

LBCL

Bit 8: Last bit clock pulse This bit is used to select whether the clock pulse associated with the last data bit transmitted (MSB) has to be output on the CK pin in Synchronous mode. The last bit is the 7th or 8th or 9th data bit transmitted depending on the 7 or 8 or 9 bit format selected by the M bit in the USART_CR1 register. This bit can only be written when the USART is disabled (UE=0). Note: If Synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CPHA

Bit 9: Clock phase This bit is used to select the phase of the clock output on the CK pin in Synchronous mode. It works in conjunction with the CPOL bit to produce the desired clock/data relationship (see Figure1233 and Figure1234) This bit can only be written when the USART is disabled (UE=0). Note: If Synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CPOL

Bit 10: Clock polarity This bit enables the user to select the polarity of the clock output on the CK pin in Synchronous mode. It works in conjunction with the CPHA bit to produce the desired clock/data relationship This bit can only be written when the USART is disabled (UE=0). Note: If Synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CLKEN

Bit 11: Clock enable This bit enables the user to enable the CK pin. This bit can only be written when the USART is disabled (UE=0). Note: If neither Synchronous mode nor Smartcard mode is supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826. In Smartcard mode, in order to provide correctly the CK clock to the smartcard, the steps below must be respected: UE = 0 SCEN = 1 GTPR configuration CLKEN= 1 Note: UE = 1.

STOP

Bits 12-13: stop bits These bits are used for programming the stop bits. This bitfield can only be written when the USART is disabled (UE=0)..

LINEN

Bit 14: LIN mode enable This bit is set and cleared by software. The LIN mode enables the capability to send LIN synchronous breaks (13 low bits) using the SBKRQ bit in the USART_CR1 register, and to detect LIN Sync breaks. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support LIN mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

SWAP

Bit 15: Swap TX/RX pins This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

RXINV

Bit 16: RX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the RX line. This bitfield can only be written when the USART is disabled (UE=0)..

TXINV

Bit 17: TX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the TX line. This bitfield can only be written when the USART is disabled (UE=0)..

DATAINV

Bit 18: Binary data inversion This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

MSBFIRST

Bit 19: Most significant bit first This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

ABREN

Bit 20: Auto baud rate enable This bit is set and cleared by software. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

ABRMOD

Bits 21-22: Auto baud rate mode These bits are set and cleared by software. This bitfield can only be written when ABREN = 0 or the USART is disabled (UE=0). Note: If DATAINV=1 and/or MSBFIRST=1 the patterns must be the same on the line, for example 0xAA for MSBFIRST) Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RTOEN

Bit 23: Receiver timeout enable This bit is set and cleared by software. When this feature is enabled, the RTOF flag in the USART_ISR register is set if the RX line is idle (no reception) for the duration programmed in the RTOR (receiver timeout register). Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

ADD

Bits 24-31: Address of the USART node These bits give the address of the USART node in Mute mode or a character code to be recognized in low-power or Run mode: In Mute mode: they are used in multiprocessor communication to wake up from Mute mode with 4-bit/7-bit address mark detection. The MSB of the character sent by the transmitter should be equal to 1. In 4-bit address mark detection, only ADD[3:0] bits are used. In low-power mode: they are used for wake up from low-power mode on character match. When WUS[1:0] is programmed to 0b00 (WUF active on address match), the wake-up from low-power mode is performed when the received character corresponds to the character programmed through ADD[6:0] or ADD[3:0] bitfield (depending on ADDM7 bit), and WUF interrupt is enabled by setting WUFIE bit. The MSB of the character sent by transmitter should be equal to 1. In Run mode with Mute mode inactive (for example, end-of-block detection in ModBus protocol): the whole received character (8 bits) is compared to ADD[7:0] value and CMF flag is set on match. An interrupt is generated if the CMIE bit is set. These bits can only be written when the reception is disabled (RE1=10) or when the USART is disabled (UE1=10)..

USART_CR3

USART control register 3

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/25 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TXFTCFG
rw
RXFTIE
rw
RXFTCFG
rw
TCBGTIE
rw
TXFTIE
rw
WUFIE
rw
WUS1
rw
WUS0
rw
SCARCNT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DEP
rw
DEM
rw
DDRE
rw
OVRDIS
rw
ONEBIT
rw
CTSIE
rw
CTSE
rw
RTSE
rw
DMAT
rw
DMAR
rw
SCEN
rw
NACK
rw
HDSEL
rw
IRLP
rw
IREN
rw
EIE
rw
Toggle fields

EIE

Bit 0: Error interrupt enable Error Interrupt Enable Bit is required to enable interrupt generation in case of a framing error, overrun error noise flag or SPI slave underrun error (FE=1 or ORE=1 or NE=1or UDR = 1 in the USART_ISR register)..

IREN

Bit 1: IrDA mode enable This bit is set and cleared by software. This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

IRLP

Bit 2: IrDA low-power This bit is used for selecting between normal and low-power IrDA modes This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

HDSEL

Bit 3: Half-duplex selection Selection of Single-wire Half-duplex mode This bit can only be written when the USART is disabled (UE=0)..

NACK

Bit 4: Smartcard NACK enable This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

SCEN

Bit 5: Smartcard mode enable This bit is used for enabling Smartcard mode. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

DMAR

Bit 6: DMA enable receiver This bit is set/reset by software.

DMAT

Bit 7: DMA enable transmitter This bit is set/reset by software.

RTSE

Bit 8: RTS enable This bit can only be written when the USART is disabled (UE=0). Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSE

Bit 9: CTS enable This bit can only be written when the USART is disabled (UE=0) Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSIE

Bit 10: CTS interrupt enable Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

ONEBIT

Bit 11: One sample bit method enable This bit enables the user to select the sample method. When the one sample bit method is selected the noise detection flag (NE) is disabled. This bit can only be written when the USART is disabled (UE=0)..

OVRDIS

Bit 12: Overrun Disable This bit is used to disable the receive overrun detection. the ORE flag is not set and the new received data overwrites the previous content of the USART_RDR register. When FIFO mode is enabled, the RXFIFO is bypassed and data are written directly in USART_RDR register. Even when FIFO management is enabled, the RXNE flag is to be used. This bit can only be written when the USART is disabled (UE=0). Note: This control bit enables checking the communication flow w/o reading the data.

DDRE

Bit 13: DMA Disable on Reception Error This bit can only be written when the USART is disabled (UE=0). Note: The reception errors are: parity error, framing error or noise error..

DEM

Bit 14: Driver enable mode This bit enables the user to activate the external transceiver control, through the DE signal. This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Section131.4: USART implementation on page1826..

DEP

Bit 15: Driver enable polarity selection This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

SCARCNT

Bits 17-19: Smartcard auto-retry count This bitfield specifies the number of retries for transmission and reception in Smartcard mode. In Transmission mode, it specifies the number of automatic retransmission retries, before generating a transmission error (FE bit set). In Reception mode, it specifies the number or erroneous reception trials, before generating a reception error (RXNE/RXFNE and PE bits set). This bitfield must be programmed only when the USART is disabled (UE=0). When the USART is enabled (UE=1), this bitfield may only be written to 0x0, in order to stop retransmission. 0x1 to 0x7: number of automatic retransmission attempts (before signaling error) Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUS0

Bit 20: Wake-up from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (wake-up from low-power mode flag). This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUS1

Bit 21: Wake-up from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (wake-up from low-power mode flag). This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUFIE

Bit 22: Wake-up from low-power mode interrupt enable This bit is set and cleared by software. Note: WUFIE must be set before entering in low-power mode. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

TXFTIE

Bit 23: TXFIFO threshold interrupt enable This bit is set and cleared by software..

TCBGTIE

Bit 24: Transmission Complete before guard time, interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RXFTCFG

Bits 25-27: Receive FIFO threshold configuration Remaining combinations: Reserved.

RXFTIE

Bit 28: RXFIFO threshold interrupt enable This bit is set and cleared by software..

TXFTCFG

Bits 29-31: TXFIFO threshold configuration Remaining combinations: Reserved.

USART_BRR

USART baud rate register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BRR
rw
Toggle fields

BRR

Bits 0-15: USART baud rate BRR[15:4] BRR[15:4] correspond to USARTDIV[15:4] BRR[3:0] When OVER8 = 0, BRR[3:0] = USARTDIV[3:0]. When OVER8 = 1: BRR[2:0] = USARTDIV[3:0] shifted 1 bit to the right. BRR[3] must be kept cleared..

USART_GTPR

USART guard time and prescaler register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
GT
rw
PSC
rw
Toggle fields

PSC

Bits 0-7: Prescaler value PSC[7:0] = IrDA Normal and Low-power baud rate This bitfield is used for programming the prescaler for dividing the USART source clock to achieve the low-power frequency: The source clock is divided by the value given in the register (8 significant bits): ... PSC[4:0]: Prescaler value This bitfield is used for programming the prescaler for dividing the USART source clock to provide the Smartcard clock. The value given in the register (5 significant bits) is multiplied by 2 to give the division factor of the source clock frequency: ... This bitfield can only be written when the USART is disabled (UE=0). Note: Bits [7:5] must be kept cleared if Smartcard mode is used. Note: This bitfield is reserved and forced by hardware to 0 when the Smartcard and IrDA modes are not supported. Refer to Section131.4: USART implementation on page1826..

GT

Bits 8-15: Guard time value This bitfield is used to program the Guard time value in terms of number of baud clock periods. This is used in Smartcard mode. The Transmission Complete flag is set after this guard time value. This bitfield can only be written when the USART is disabled (UE=0). Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

USART_RTOR

USART receiver timeout register

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BLEN
rw
RTO
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RTO
rw
Toggle fields

RTO

Bits 0-23: Receiver timeout value This bitfield gives the Receiver timeout value in terms of number of bit duration. In Standard mode, the RTOF flag is set if, after the last received character, no new start bit is detected for more than the RTO value. In Smartcard mode, this value is used to implement the CWT and BWT. See Smartcard chapter for more details. In the standard, the CWT/BWT measurement is done starting from the start bit of the last received character. Note: This value must only be programmed once per received character..

BLEN

Bits 24-31: Block Length This bitfield gives the Block length in Smartcard T=1 Reception. Its value equals the number of information characters + the length of the Epilogue Field (1-LEC/2-CRC) - 1. Examples: BLEN = 0 -> 0 information characters + LEC BLEN = 1 -> 0 information characters + CRC BLEN = 255 -> 254 information characters + CRC (total 256 characters)) In Smartcard mode, the Block length counter is reset when TXE=0 (TXFE = 0 in case FIFO mode is enabled). This bitfield can be used also in other modes. In this case, the Block length counter is reset when RE=0 (receiver disabled) and/or when the EOBCF bit is written to 1. Note: This value can be programmed after the start of the block reception (using the data from the LEN character in the Prologue Field). It must be programmed only once per received block..

USART_RQR

USART request register

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/5 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TXFRQ
w
RXFRQ
w
MMRQ
w
SBKRQ
w
ABRRQ
w
Toggle fields

ABRRQ

Bit 0: Auto baud rate request Writing 1 to this bit resets the ABRF and ABRE flags in the USART_ISR and requests an automatic baud rate measurement on the next received data frame. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

SBKRQ

Bit 1: Send break request Writing 1 to this bit sets the SBKF flag and request to send a BREAK on the line, as soon as the transmit machine is available. Note: When the application needs to send the break character following all previously inserted data, including the ones not yet transmitted, the software must wait for the TXE flag assertion before setting the SBKRQ bit..

MMRQ

Bit 2: Mute mode request Writing 1 to this bit puts the USART in Mute mode and resets the RWU flag..

RXFRQ

Bit 3: Receive data flush request Writing 1 to this bit empties the entire receive FIFO i.e. clears the bit RXFNE. This enables to discard the received data without reading them, and avoid an overrun condition..

TXFRQ

Bit 4: Transmit data flush request When FIFO mode is disabled, writing 1 to this bit sets the TXE flag. This enables to discard the transmit data. This bit must be used only in Smartcard mode, when data have not been sent due to errors (NACK) and the FE flag is active in the USART_ISR register. If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. When FIFO is enabled, TXFRQ bit is set to flush the whole FIFO. This sets the TXFE flag (Transmit FIFO empty, bit 23 in the USART_ISR register). Flushing the Transmit FIFO is supported in both UART and Smartcard modes. Note: In FIFO mode, the TXFNF flag is reset during the flush request until TxFIFO is empty in order to ensure that no data are written in the data register..

USART_ISR

USART interrupt and status register

Offset: 0x1c, size: 32, reset: 0x000000C0, access: Unspecified

28/28 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TXFT
r
RXFT
r
TCBGT
r
RXFF
r
TXFE
r
REACK
r
TEACK
r
WUF
r
RWU
r
SBKF
r
CMF
r
BUSY
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ABRF
r
ABRE
r
UDR
r
EOBF
r
RTOF
r
CTS
r
CTSIF
r
LBDF
r
TXFNF
r
TC
r
RXFNE
r
IDLE
r
ORE
r
NE
r
FE
r
PE
r
Toggle fields

PE

Bit 0: Parity error This bit is set by hardware when a parity error occurs in Reception mode. It is cleared by software, writing 1 to the PECF in the USART_ICR register. An interrupt is generated if PEIE = 1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..

FE

Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the USART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE1=11 in the USART_CR3 register. Note: This error is associated with the character in the USART_RDR..

NE

Bit 2: Noise detection flag This bit is set by hardware when noise is detected on a received frame. It is cleared by software, writing 1 to the NFCF bit in the USART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXFNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. Note: When the line is noise-free, the NE flag can be disabled by programming the ONEBIT bit to 1 to increase the USART tolerance to deviations (Refer to Section131.5.9: Tolerance of the USART receiver to clock deviation on page1845). Note: This error is associated with the character in the USART_RDR..

ORE

Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the USART_RDR register while RXFF = 1. It is cleared by a software, writing 1 to the ORECF, in the USART_ICR register. An interrupt is generated if RXFNEIE=1 in the USART_CR1 register, or EIE = 1 in the USART_CR3 register. Note: When this bit is set, the USART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. Note: This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the USART_CR3 register..

IDLE

Bit 4: Idle line detected This bit is set by hardware when an Idle Line is detected. An interrupt is generated if IDLEIE=1 in the USART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the USART_ICR register. Note: The IDLE bit is not set again until the RXFNE bit has been set (i.e. a new idle line occurs). Note: If Mute mode is enabled (MME=1), IDLE is set if the USART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..

RXFNE

Bit 5: RXFIFO not empty RXFNE bit is set by hardware when the RXFIFO is not empty, meaning that data can be read from the USART_RDR register. Every read operation from the USART_RDR frees a location in the RXFIFO. RXFNE is cleared when the RXFIFO is empty. The RXFNE flag can also be cleared by writing 1 to the RXFRQ in the USART_RQR register. An interrupt is generated if RXFNEIE=1 in the USART_CR1 register..

TC

Bit 6: Transmission complete This bit indicates that the last data written in the USART_TDR has been transmitted out of the shift register. The TC flag behaves as follows: When TDN = 0, the TC flag is set when the transmission of a frame containing data is complete and when TXE/TXFE is set. When TDN is equal to the number of data in the TXFIFO, the TC flag is set when TXFIFO is empty and TDN is reached. When TDN is greater than the number of data in the TXFIFO, TC remains cleared until the TXFIFO is filled again to reach the programmed number of data to be transferred. When TDN is less than the number of data in the TXFIFO, TC is set when TDN is reached even if the TXFIFO is not empty. An interrupt is generated if TCIE=1 in the USART_CR1 register. TC bit is cleared by software by writing 1 to the TCCF in the USART_ICR register or by writing to the USART_TDR register..

TXFNF

Bit 7: TXFIFO not full TXFNF is set by hardware when TXFIFO is not full meaning that data can be written in the USART_TDR. Every write operation to the USART_TDR places the data in the TXFIFO. This flag remains set until the TXFIFO is full. When the TXFIFO is full, this flag is cleared indicating that data can not be written into the USART_TDR. An interrupt is generated if the TXFNFIE bit =1 in the USART_CR1 register. Note: The TXFNF is kept reset during the flush request until TXFIFO is empty. After sending the flush request (by setting TXFRQ bit), the flag TXFNF must be checked prior to writing in TXFIFO (TXFNF and TXFE is set at the same time). Note: This bit is used during single buffer transmission..

LBDF

Bit 8: LIN break detection flag This bit is set by hardware when the LIN break is detected. It is cleared by software, by writing 1 to the LBDCF in the USART_ICR. An interrupt is generated if LBDIE = 1 in the USART_CR2 register. Note: If the USART does not support LIN mode, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSIF

Bit 9: CTS interrupt flag This bit is set by hardware when the CTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the USART_ICR register. An interrupt is generated if CTSIE=1 in the USART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

CTS

Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the CTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

RTOF

Bit 11: Receiver timeout This bit is set by hardware when the timeout value, programmed in the RTOR register has lapsed, without any communication. It is cleared by software, writing 1 to the RTOCF bit in the USART_ICR register. An interrupt is generated if RTOIE=1 in the USART_CR2 register. In Smartcard mode, the timeout corresponds to the CWT or BWT timings. Note: If a time equal to the value programmed in RTOR register separates 2 characters, RTOF is not set. If this time exceeds this value + 2 sample times (2/16 or 2/8, depending on the oversampling method), RTOF flag is set. Note: The counter counts even if RE = 0 but RTOF is set only when RE = 1. If the timeout has already elapsed when RE is set, then RTOF is set. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and kept at reset value..

EOBF

Bit 12: End of block flag This bit is set by hardware when a complete block has been received (for example T=1 Smartcard mode). The detection is done when the number of received bytes (from the start of the block, including the prologue) is equal or greater than BLEN + 4. An interrupt is generated if EOBIE1=11 in the USART_CR1 register. It is cleared by software, writing 1 to EOBCF in the USART_ICR register. Note: If Smartcard mode is not supported, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

UDR

Bit 13: SPI slave underrun error flag In Slave transmission mode, this flag is set when the first clock pulse for data transmission appears while the software has not yet loaded any value into USART_TDR. This flag is reset by setting UDRCF bit in the USART_ICR register. Note: If the USART does not support the SPI slave mode, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

ABRE

Bit 14: Auto baud rate error This bit is set by hardware if the baud rate measurement failed (baud rate out of range or character comparison failed) It is cleared by software, by writing 1 to the ABRRQ bit in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..

ABRF

Bit 15: Auto baud rate flag This bit is set by hardware when the automatic baud rate has been set (RXFNE is also set, generating an interrupt if RXFNEIE = 1) or when the auto baud rate operation was completed without success (ABRE=1) (ABRE, RXFNE and FE are also set in this case) It is cleared by software, in order to request a new auto baud rate detection, by writing 1 to the ABRRQ in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..

BUSY

Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..

CMF

Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the USART_ICR register. An interrupt is generated if CMIE=1in the USART_CR1 register..

SBKF

Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the USART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..

RWU

Bit 19: Receiver wake-up from Mute mode This bit indicates if the USART is in Mute mode. It is cleared/set by hardware when a wake-up/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the USART_CR1 register. When wake-up on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the USART_RQR register. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUF

Bit 20: Wake-up from low-power mode flag This bit is set by hardware, when a wake-up event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the USART_ICR register. An interrupt is generated if WUFIE=1 in the USART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

TEACK

Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the USART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the USART_CR1 register, in order to respect the TE=0 minimum period..

REACK

Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the USART. It can be used to verify that the USART is ready for reception before entering low-power mode. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

TXFE

Bit 23: TXFIFO Empty This bit is set by hardware when TXFIFO is Empty. When the TXFIFO contains at least one data, this flag is cleared. The TXFE flag can also be set by writing 1 to the bit TXFRQ (bit 4) in the USART_RQR register. An interrupt is generated if the TXFEIE bit =1 (bit 30) in the USART_CR1 register..

RXFF

Bit 24: RXFIFO Full This bit is set by hardware when the number of received data corresponds to RXFIFO1size1+11 (RXFIFO full + 1 data in the USART_RDR register. An interrupt is generated if the RXFFIE bit =1 in the USART_CR1 register..

TCBGT

Bit 25: Transmission complete before guard time flag This bit is set when the last data written in the USART_TDR has been transmitted correctly out of the shift register. It is set by hardware in Smartcard mode, if the transmission of a frame containing data is complete and if the smartcard did not send back any NACK. An interrupt is generated if TCBGTIE=1 in the USART_CR3 register. This bit is cleared by software, by writing 1 to the TCBGTCF in the USART_ICR register or by a write to the USART_TDR register. Note: If the USART does not support the Smartcard mode, this bit is reserved and kept at reset value. If the USART supports the Smartcard mode and the Smartcard mode is enabled, the TCBGT reset value is 1. Refer to Section131.4: USART implementation on page1826..

RXFT

Bit 26: RXFIFO threshold flag This bit is set by hardware when the threshold programmed in RXFTCFG in USART_CR3 register is reached. This means that there are (RXFTCFG - 1) data in the Receive FIFO and one data in the USART_RDR register. An interrupt is generated if the RXFTIE bit =1 (bit 27) in the USART_CR3 register. Note: When the RXFTCFG threshold is configured to 101, RXFT flag is set if 16 data are available i.e. 15 data in the RXFIFO and 1 data in the USART_RDR. Consequently, the 17th received data does not cause an overrun error. The overrun error occurs after receiving the 18th data..

TXFT

Bit 27: TXFIFO threshold flag This bit is set by hardware when the TXFIFO reaches the threshold programmed in TXFTCFG of USART_CR3 register i.e. the TXFIFO contains TXFTCFG empty locations. An interrupt is generated if the TXFTIE bit =1 (bit 31) in the USART_CR3 register..

USART_ISR_ALTERNATE

USART interrupt and status register

Offset: 0x1c, size: 32, reset: 0x000000C0, access: Unspecified

24/24 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TCBGT
r
REACK
r
TEACK
r
WUF
r
RWU
r
SBKF
r
CMF
r
BUSY
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ABRF
r
ABRE
r
UDR
r
EOBF
r
RTOF
r
CTS
r
CTSIF
r
LBDF
r
TXE
r
TC
r
RXNE
r
IDLE
r
ORE
r
NE
r
FE
r
PE
r
Toggle fields

PE

Bit 0: Parity error This bit is set by hardware when a parity error occurs in Reception mode. It is cleared by software, writing 1 to the PECF in the USART_ICR register. An interrupt is generated if PEIE = 1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..

FE

Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the USART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE1=11 in the USART_CR3 register. Note: This error is associated with the character in the USART_RDR..

NE

Bit 2: Noise detection flag This bit is set by hardware when noise is detected on a received frame. It is cleared by software, writing 1 to the NFCF bit in the USART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. Note: When the line is noise-free, the NE flag can be disabled by programming the ONEBIT bit to 1 to increase the USART tolerance to deviations (Refer to Section131.5.9: Tolerance of the USART receiver to clock deviation on page1845). Note: This error is associated with the character in the USART_RDR..

ORE

Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the USART_RDR register while RXNE=1. It is cleared by a software, writing 1 to the ORECF, in the USART_ICR register. An interrupt is generated if RXNEIE=1 in the USART_CR1 register, or EIE = 1 in the USART_CR3 register. Note: When this bit is set, the USART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. Note: This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the USART_CR3 register..

IDLE

Bit 4: Idle line detected This bit is set by hardware when an Idle Line is detected. An interrupt is generated if IDLEIE=1 in the USART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the USART_ICR register. Note: The IDLE bit is not set again until the RXNE bit has been set (i.e. a new idle line occurs). Note: If Mute mode is enabled (MME=1), IDLE is set if the USART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..

RXNE

Bit 5: Read data register not empty RXNE bit is set by hardware when the content of the USART_RDR shift register has been transferred to the USART_RDR register. It is cleared by reading from the USART_RDR register. The RXNE flag can also be cleared by writing 1 to the RXFRQ in the USART_RQR register. An interrupt is generated if RXNEIE=1 in the USART_CR1 register..

TC

Bit 6: Transmission complete This bit indicates that the last data written in the USART_TDR has been transmitted out of the shift register. The TC flag is set when the transmission of a frame containing data is complete and when TXE is set. An interrupt is generated if TCIE=1 in the USART_CR1 register. TC bit is cleared by software by writing 1 to the TCCF in the USART_ICR register or by writing to the USART_TDR register..

TXE

Bit 7: Transmit data register empty TXE is set by hardware when the content of the USART_TDR register has been transferred into the shift register. It is cleared by writing to the USART_TDR register. The TXE flag can also be set by writing 1 to the TXFRQ in the USART_RQR register, in order to discard the data (only in Smartcard T=0 mode, in case of transmission failure). An interrupt is generated if the TXEIE bit =1 in the USART_CR1 register..

LBDF

Bit 8: LIN break detection flag This bit is set by hardware when the LIN break is detected. It is cleared by software, by writing 1 to the LBDCF in the USART_ICR. An interrupt is generated if LBDIE = 1 in the USART_CR2 register. Note: If the USART does not support LIN mode, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSIF

Bit 9: CTS interrupt flag This bit is set by hardware when the CTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the USART_ICR register. An interrupt is generated if CTSIE=1 in the USART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

CTS

Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the CTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

RTOF

Bit 11: Receiver timeout This bit is set by hardware when the timeout value, programmed in the RTOR register has lapsed, without any communication. It is cleared by software, writing 1 to the RTOCF bit in the USART_ICR register. An interrupt is generated if RTOIE=1 in the USART_CR2 register. In Smartcard mode, the timeout corresponds to the CWT or BWT timings. Note: If a time equal to the value programmed in RTOR register separates 2 characters, RTOF is not set. If this time exceeds this value + 2 sample times (2/16 or 2/8, depending on the oversampling method), RTOF flag is set. Note: The counter counts even if RE = 0 but RTOF is set only when RE = 1. If the timeout has already elapsed when RE is set, then RTOF is set. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and kept at reset value..

EOBF

Bit 12: End of block flag This bit is set by hardware when a complete block has been received (for example T=1 Smartcard mode). The detection is done when the number of received bytes (from the start of the block, including the prologue) is equal or greater than BLEN + 4. An interrupt is generated if EOBIE1=11 in the USART_CR1 register. It is cleared by software, writing 1 to EOBCF in the USART_ICR register. Note: If Smartcard mode is not supported, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

UDR

Bit 13: SPI slave underrun error flag In Slave transmission mode, this flag is set when the first clock pulse for data transmission appears while the software has not yet loaded any value into USART_TDR. This flag is reset by setting UDRCF bit in the USART_ICR register. Note: If the USART does not support the SPI slave mode, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

ABRE

Bit 14: Auto baud rate error This bit is set by hardware if the baud rate measurement failed (baud rate out of range or character comparison failed) It is cleared by software, by writing 1 to the ABRRQ bit in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..

ABRF

Bit 15: Auto baud rate flag This bit is set by hardware when the automatic baud rate has been set (RXNE is also set, generating an interrupt if RXNEIE = 1) or when the auto baud rate operation was completed without success (ABRE=1) (ABRE, RXNE and FE are also set in this case) It is cleared by software, in order to request a new auto baud rate detection, by writing 1 to the ABRRQ in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..

BUSY

Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..

CMF

Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the USART_ICR register. An interrupt is generated if CMIE=1in the USART_CR1 register..

SBKF

Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the USART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..

RWU

Bit 19: Receiver wake-up from Mute mode This bit indicates if the USART is in Mute mode. It is cleared/set by hardware when a wake-up/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the USART_CR1 register. When wake-up on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the USART_RQR register. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUF

Bit 20: Wake-up from low-power mode flag This bit is set by hardware, when a wake-up event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the USART_ICR register. An interrupt is generated if WUFIE=1 in the USART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

TEACK

Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the USART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the USART_CR1 register, in order to respect the TE=0 minimum period..

REACK

Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the USART. It can be used to verify that the USART is ready for reception before entering low-power mode. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

TCBGT

Bit 25: Transmission complete before guard time flag This bit is set when the last data written in the USART_TDR has been transmitted correctly out of the shift register. It is set by hardware in Smartcard mode, if the transmission of a frame containing data is complete and if the smartcard did not send back any NACK. An interrupt is generated if TCBGTIE=1 in the USART_CR3 register. This bit is cleared by software, by writing 1 to the TCBGTCF in the USART_ICR register or by a write to the USART_TDR register. Note: If the USART does not support the Smartcard mode, this bit is reserved and kept at reset value. If the USART supports the Smartcard mode and the Smartcard mode is enabled, the TCBGT reset value is 1. Refer to Section131.4: USART implementation on page1826..

USART_ICR

USART interrupt flag clear register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/15 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
WUCF
w
CMCF
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UDRCF
w
EOBCF
w
RTOCF
w
CTSCF
w
LBDCF
w
TCBGTCF
w
TCCF
w
TXFECF
w
IDLECF
w
ORECF
w
NECF
w
FECF
w
PECF
w
Toggle fields

PECF

Bit 0: Parity error clear flag Writing 1 to this bit clears the PE flag in the USART_ISR register..

FECF

Bit 1: Framing error clear flag Writing 1 to this bit clears the FE flag in the USART_ISR register..

NECF

Bit 2: Noise detected clear flag Writing 1 to this bit clears the NE flag in the USART_ISR register..

ORECF

Bit 3: Overrun error clear flag Writing 1 to this bit clears the ORE flag in the USART_ISR register..

IDLECF

Bit 4: Idle line detected clear flag Writing 1 to this bit clears the IDLE flag in the USART_ISR register..

TXFECF

Bit 5: TXFIFO empty clear flag Writing 1 to this bit clears the TXFE flag in the USART_ISR register..

TCCF

Bit 6: Transmission complete clear flag Writing 1 to this bit clears the TC flag in the USART_ISR register..

TCBGTCF

Bit 7: Transmission complete before Guard time clear flag Writing 1 to this bit clears the TCBGT flag in the USART_ISR register..

LBDCF

Bit 8: LIN break detection clear flag Writing 1 to this bit clears the LBDF flag in the USART_ISR register. Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSCF

Bit 9: CTS clear flag Writing 1 to this bit clears the CTSIF flag in the USART_ISR register. Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RTOCF

Bit 11: Receiver timeout clear flag Writing 1 to this bit clears the RTOF flag in the USART_ISR register. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

EOBCF

Bit 12: End of block clear flag Writing 1 to this bit clears the EOBF flag in the USART_ISR register. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

UDRCF

Bit 13: SPI slave underrun clear flag Writing 1 to this bit clears the UDRF flag in the USART_ISR register. Note: If the USART does not support SPI slave mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826.

CMCF

Bit 17: Character match clear flag Writing 1 to this bit clears the CMF flag in the USART_ISR register..

WUCF

Bit 20: Wake-up from low-power mode clear flag Writing 1 to this bit clears the WUF flag in the USART_ISR register. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

USART_RDR

USART receive data register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RDR
r
Toggle fields

RDR

Bits 0-8: Receive data value Contains the received data character. The RDR register provides the parallel interface between the input shift register and the internal bus (see Figure1227). When receiving with the parity enabled, the value read in the MSB bit is the received parity bit..

USART_TDR

USART transmit data register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TDR
rw
Toggle fields

TDR

Bits 0-8: Transmit data value Contains the data character to be transmitted. The USART_TDR register provides the parallel interface between the internal bus and the output shift register (see Figure1227). When transmitting with the parity enabled (PCE bit set to 1 in the USART_CR1 register), the value written in the MSB (bit 7 or bit 8 depending on the data length) has no effect because it is replaced by the parity. Note: This register must be written only when TXE/TXFNF=1..

USART_PRESC

USART prescaler register

Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PRESCALER
rw
Toggle fields

PRESCALER

Bits 0-3: Clock prescaler The USART input clock can be divided by a prescaler factor: Remaining combinations: Reserved Note: When PRESCALER is programmed with a value different of the allowed ones, programmed prescaler value is equal to 1011 i.e. input clock divided by 256..

USART4

0x40004c00: USART address block description

53/171 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 USART_CR1
0x0 USART_CR1_ALTERNATE
0x4 USART_CR2
0x8 USART_CR3
0xc USART_BRR
0x10 USART_GTPR
0x14 USART_RTOR
0x18 USART_RQR
0x1c USART_ISR
0x1c USART_ISR_ALTERNATE
0x20 USART_ICR
0x24 USART_RDR
0x28 USART_TDR
0x2c USART_PRESC
Toggle registers

USART_CR1

USART control register 1

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/24 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
RXFFIE
rw
TXFEIE
rw
FIFOEN
rw
M1
rw
EOBIE
rw
RTOIE
rw
DEAT
rw
DEDT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OVER8
rw
CMIE
rw
MME
rw
M0
rw
WAKE
rw
PCE
rw
PS
rw
PEIE
rw
TXFNFIE
rw
TCIE
rw
RXFNEIE
rw
IDLEIE
rw
TE
rw
RE
rw
UESM
rw
UE
rw
Toggle fields

UE

Bit 0: USART enable When this bit is cleared, the USART prescalers and outputs are stopped immediately, and all current operations are discarded. The USART configuration is kept, but all the USART_ISR status flags are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be previously reset and the software must wait for the TC bit in the USART_ISR to be set before resetting the UE bit. Note: The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit. Note: In Smartcard mode, (SCEN = 1), the CK is always available when CLKEN = 1, regardless of the UE bit value..

UESM

Bit 1: USART enable in low-power mode When this bit is cleared, the USART cannot wake up the MCU from low-power mode. When this bit is set, the USART can wake up the MCU from low-power mode. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode, and clear it when exiting low-power mode..

RE

Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..

TE

Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit (0 followed by 1) sends a preamble (idle line) after the current word, except in Smartcard mode. In order to generate an idle character, the TE must not be immediately written to 1. To ensure the required duration, the software can poll the TEACK bit in the USART_ISR register. Note: In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..

IDLEIE

Bit 4: IDLE interrupt enable This bit is set and cleared by software..

RXFNEIE

Bit 5: RXFIFO not empty interrupt enable This bit is set and cleared by software..

TCIE

Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..

TXFNFIE

Bit 7: TXFIFO not full interrupt enable This bit is set and cleared by software..

PEIE

Bit 8: PE interrupt enable This bit is set and cleared by software..

PS

Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the USART is disabled (UE=0)..

PCE

Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and the parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the USART is disabled (UE=0)..

WAKE

Bit 11: Receiver wake-up method This bit determines the USART wake-up method from Mute mode. It is set or cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

M0

Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1)description). This bit can only be written when the USART is disabled (UE=0)..

MME

Bit 13: Mute mode enable This bit enables the USART Mute mode function. When set, the USART can switch between active and Mute mode, as defined by the WAKE bit. It is set and cleared by software..

CMIE

Bit 14: Character match interrupt enable This bit is set and cleared by software..

OVER8

Bit 15: Oversampling mode This bit can only be written when the USART is disabled (UE=0). Note: In LIN, IrDA and Smartcard modes, this bit must be kept cleared..

DEDT

Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). If the USART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

DEAT

Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RTOIE

Bit 26: Receiver timeout interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Section131.4: USART implementation on page1826..

EOBIE

Bit 27: End of Block interrupt enable This bit is set and cleared by software. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

M1

Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = 00: 1 start bit, 8 Data bits, n Stop bit M[1:0] = 01: 1 start bit, 9 Data bits, n Stop bit M[1:0] = 10: 1 start bit, 7 Data bits, n Stop bit This bit can only be written when the USART is disabled (UE=0). Note: In 7-bits data length mode, the Smartcard mode, LIN master mode and auto baud rate (0x7F and 0x55 frames detection) are not supported..

FIFOEN

Bit 29: FIFO mode enable This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0). Note: FIFO mode can be used on standard UART communication, in SPI Master/Slave mode and in Smartcard modes only. It must not be enabled in IrDA and LIN modes..

TXFEIE

Bit 30: TXFIFO empty interrupt enable This bit is set and cleared by software..

RXFFIE

Bit 31: None.

USART_CR1_ALTERNATE

USART control register 1

Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified

0/22 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
FIFOEN
rw
M1
rw
EOBIE
rw
RTOIE
rw
DEAT
rw
DEDT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OVER8
rw
CMIE
rw
MME
rw
M0
rw
WAKE
rw
PCE
rw
PS
rw
PEIE
rw
TXEIE
rw
TCIE
rw
RXNEIE
rw
IDLEIE
rw
TE
rw
RE
rw
UESM
rw
UE
rw
Toggle fields

UE

Bit 0: USART enable When this bit is cleared, the USART prescalers and outputs are stopped immediately, and all current operations are discarded. The USART configuration is kept, but all the USART_ISR status flags are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be previously reset and the software must wait for the TC bit in the USART_ISR to be set before resetting the UE bit. Note: The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit. Note: In Smartcard mode, (SCEN = 1), the CK is always available when CLKEN = 1, regardless of the UE bit value..

UESM

Bit 1: USART enable in low-power mode When this bit is cleared, the USART cannot wake up the MCU from low-power mode. When this bit is set, the USART can wake up the MCU from low-power mode. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode, and clear it when exiting low-power mode..

RE

Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..

TE

Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit (0 followed by 1) sends a preamble (idle line) after the current word, except in Smartcard mode. In order to generate an idle character, the TE must not be immediately written to 1. To ensure the required duration, the software can poll the TEACK bit in the USART_ISR register. Note: In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..

IDLEIE

Bit 4: IDLE interrupt enable This bit is set and cleared by software..

RXNEIE

Bit 5: Receive data register not empty This bit is set and cleared by software..

TCIE

Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..

TXEIE

Bit 7: Transmit data register empty This bit is set and cleared by software..

PEIE

Bit 8: PE interrupt enable This bit is set and cleared by software..

PS

Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the USART is disabled (UE=0)..

PCE

Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and the parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the USART is disabled (UE=0)..

WAKE

Bit 11: Receiver wake-up method This bit determines the USART wake-up method from Mute mode. It is set or cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

M0

Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1)description). This bit can only be written when the USART is disabled (UE=0)..

MME

Bit 13: Mute mode enable This bit enables the USART Mute mode function. When set, the USART can switch between active and Mute mode, as defined by the WAKE bit. It is set and cleared by software..

CMIE

Bit 14: Character match interrupt enable This bit is set and cleared by software..

OVER8

Bit 15: Oversampling mode This bit can only be written when the USART is disabled (UE=0). Note: In LIN, IrDA and Smartcard modes, this bit must be kept cleared..

DEDT

Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). If the USART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

DEAT

Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RTOIE

Bit 26: Receiver timeout interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Section131.4: USART implementation on page1826..

EOBIE

Bit 27: End of Block interrupt enable This bit is set and cleared by software. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

M1

Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = 00: 1 start bit, 8 Data bits, n Stop bit M[1:0] = 01: 1 start bit, 9 Data bits, n Stop bit M[1:0] = 10: 1 start bit, 7 Data bits, n Stop bit This bit can only be written when the USART is disabled (UE=0). Note: In 7-bits data length mode, the Smartcard mode, LIN master mode and auto baud rate (0x7F and 0x55 frames detection) are not supported..

FIFOEN

Bit 29: FIFO mode enable This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0). Note: FIFO mode can be used on standard UART communication, in SPI Master/Slave mode and in Smartcard modes only. It must not be enabled in IrDA and LIN modes..

USART_CR2

USART control register 2

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/20 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ADD
rw
RTOEN
rw
ABRMOD
rw
ABREN
rw
MSBFIRST
rw
DATAINV
rw
TXINV
rw
RXINV
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SWAP
rw
LINEN
rw
STOP
rw
CLKEN
rw
CPOL
rw
CPHA
rw
LBCL
rw
LBDIE
rw
LBDL
rw
ADDM7
rw
DIS_NSS
rw
SLVEN
rw
Toggle fields

SLVEN

Bit 0: Synchronous Slave mode enable When the SLVEN bit is set, the Synchronous slave mode is enabled. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

DIS_NSS

Bit 3: When the DIS_NSS bit is set, the NSS pin input is ignored. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

ADDM7

Bit 4: 7-bit Address Detection/4-bit Address Detection This bit is for selection between 4-bit address detection or 7-bit address detection. This bit can only be written when the USART is disabled (UE=0) Note: In 7-bit and 9-bit data modes, the address detection is done on 6-bit and 8-bit address (ADD[5:0] and ADD[7:0]) respectively..

LBDL

Bit 5: LIN break detection length This bit is for selection between 11 bit or 10 bit break detection. This bit can only be written when the USART is disabled (UE=0). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

LBDIE

Bit 6: LIN break detection interrupt enable Break interrupt mask (break detection using break delimiter). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

LBCL

Bit 8: Last bit clock pulse This bit is used to select whether the clock pulse associated with the last data bit transmitted (MSB) has to be output on the CK pin in Synchronous mode. The last bit is the 7th or 8th or 9th data bit transmitted depending on the 7 or 8 or 9 bit format selected by the M bit in the USART_CR1 register. This bit can only be written when the USART is disabled (UE=0). Note: If Synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CPHA

Bit 9: Clock phase This bit is used to select the phase of the clock output on the CK pin in Synchronous mode. It works in conjunction with the CPOL bit to produce the desired clock/data relationship (see Figure1233 and Figure1234) This bit can only be written when the USART is disabled (UE=0). Note: If Synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CPOL

Bit 10: Clock polarity This bit enables the user to select the polarity of the clock output on the CK pin in Synchronous mode. It works in conjunction with the CPHA bit to produce the desired clock/data relationship This bit can only be written when the USART is disabled (UE=0). Note: If Synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CLKEN

Bit 11: Clock enable This bit enables the user to enable the CK pin. This bit can only be written when the USART is disabled (UE=0). Note: If neither Synchronous mode nor Smartcard mode is supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826. In Smartcard mode, in order to provide correctly the CK clock to the smartcard, the steps below must be respected: UE = 0 SCEN = 1 GTPR configuration CLKEN= 1 Note: UE = 1.

STOP

Bits 12-13: stop bits These bits are used for programming the stop bits. This bitfield can only be written when the USART is disabled (UE=0)..

LINEN

Bit 14: LIN mode enable This bit is set and cleared by software. The LIN mode enables the capability to send LIN synchronous breaks (13 low bits) using the SBKRQ bit in the USART_CR1 register, and to detect LIN Sync breaks. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support LIN mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

SWAP

Bit 15: Swap TX/RX pins This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

RXINV

Bit 16: RX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the RX line. This bitfield can only be written when the USART is disabled (UE=0)..

TXINV

Bit 17: TX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the TX line. This bitfield can only be written when the USART is disabled (UE=0)..

DATAINV

Bit 18: Binary data inversion This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

MSBFIRST

Bit 19: Most significant bit first This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..

ABREN

Bit 20: Auto baud rate enable This bit is set and cleared by software. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

ABRMOD

Bits 21-22: Auto baud rate mode These bits are set and cleared by software. This bitfield can only be written when ABREN = 0 or the USART is disabled (UE=0). Note: If DATAINV=1 and/or MSBFIRST=1 the patterns must be the same on the line, for example 0xAA for MSBFIRST) Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RTOEN

Bit 23: Receiver timeout enable This bit is set and cleared by software. When this feature is enabled, the RTOF flag in the USART_ISR register is set if the RX line is idle (no reception) for the duration programmed in the RTOR (receiver timeout register). Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

ADD

Bits 24-31: Address of the USART node These bits give the address of the USART node in Mute mode or a character code to be recognized in low-power or Run mode: In Mute mode: they are used in multiprocessor communication to wake up from Mute mode with 4-bit/7-bit address mark detection. The MSB of the character sent by the transmitter should be equal to 1. In 4-bit address mark detection, only ADD[3:0] bits are used. In low-power mode: they are used for wake up from low-power mode on character match. When WUS[1:0] is programmed to 0b00 (WUF active on address match), the wake-up from low-power mode is performed when the received character corresponds to the character programmed through ADD[6:0] or ADD[3:0] bitfield (depending on ADDM7 bit), and WUF interrupt is enabled by setting WUFIE bit. The MSB of the character sent by transmitter should be equal to 1. In Run mode with Mute mode inactive (for example, end-of-block detection in ModBus protocol): the whole received character (8 bits) is compared to ADD[7:0] value and CMF flag is set on match. An interrupt is generated if the CMIE bit is set. These bits can only be written when the reception is disabled (RE1=10) or when the USART is disabled (UE1=10)..

USART_CR3

USART control register 3

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/25 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TXFTCFG
rw
RXFTIE
rw
RXFTCFG
rw
TCBGTIE
rw
TXFTIE
rw
WUFIE
rw
WUS1
rw
WUS0
rw
SCARCNT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DEP
rw
DEM
rw
DDRE
rw
OVRDIS
rw
ONEBIT
rw
CTSIE
rw
CTSE
rw
RTSE
rw
DMAT
rw
DMAR
rw
SCEN
rw
NACK
rw
HDSEL
rw
IRLP
rw
IREN
rw
EIE
rw
Toggle fields

EIE

Bit 0: Error interrupt enable Error Interrupt Enable Bit is required to enable interrupt generation in case of a framing error, overrun error noise flag or SPI slave underrun error (FE=1 or ORE=1 or NE=1or UDR = 1 in the USART_ISR register)..

IREN

Bit 1: IrDA mode enable This bit is set and cleared by software. This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

IRLP

Bit 2: IrDA low-power This bit is used for selecting between normal and low-power IrDA modes This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

HDSEL

Bit 3: Half-duplex selection Selection of Single-wire Half-duplex mode This bit can only be written when the USART is disabled (UE=0)..

NACK

Bit 4: Smartcard NACK enable This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

SCEN

Bit 5: Smartcard mode enable This bit is used for enabling Smartcard mode. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

DMAR

Bit 6: DMA enable receiver This bit is set/reset by software.

DMAT

Bit 7: DMA enable transmitter This bit is set/reset by software.

RTSE

Bit 8: RTS enable This bit can only be written when the USART is disabled (UE=0). Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSE

Bit 9: CTS enable This bit can only be written when the USART is disabled (UE=0) Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSIE

Bit 10: CTS interrupt enable Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

ONEBIT

Bit 11: One sample bit method enable This bit enables the user to select the sample method. When the one sample bit method is selected the noise detection flag (NE) is disabled. This bit can only be written when the USART is disabled (UE=0)..

OVRDIS

Bit 12: Overrun Disable This bit is used to disable the receive overrun detection. the ORE flag is not set and the new received data overwrites the previous content of the USART_RDR register. When FIFO mode is enabled, the RXFIFO is bypassed and data are written directly in USART_RDR register. Even when FIFO management is enabled, the RXNE flag is to be used. This bit can only be written when the USART is disabled (UE=0). Note: This control bit enables checking the communication flow w/o reading the data.

DDRE

Bit 13: DMA Disable on Reception Error This bit can only be written when the USART is disabled (UE=0). Note: The reception errors are: parity error, framing error or noise error..

DEM

Bit 14: Driver enable mode This bit enables the user to activate the external transceiver control, through the DE signal. This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Section131.4: USART implementation on page1826..

DEP

Bit 15: Driver enable polarity selection This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

SCARCNT

Bits 17-19: Smartcard auto-retry count This bitfield specifies the number of retries for transmission and reception in Smartcard mode. In Transmission mode, it specifies the number of automatic retransmission retries, before generating a transmission error (FE bit set). In Reception mode, it specifies the number or erroneous reception trials, before generating a reception error (RXNE/RXFNE and PE bits set). This bitfield must be programmed only when the USART is disabled (UE=0). When the USART is enabled (UE=1), this bitfield may only be written to 0x0, in order to stop retransmission. 0x1 to 0x7: number of automatic retransmission attempts (before signaling error) Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUS0

Bit 20: Wake-up from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (wake-up from low-power mode flag). This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUS1

Bit 21: Wake-up from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (wake-up from low-power mode flag). This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUFIE

Bit 22: Wake-up from low-power mode interrupt enable This bit is set and cleared by software. Note: WUFIE must be set before entering in low-power mode. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

TXFTIE

Bit 23: TXFIFO threshold interrupt enable This bit is set and cleared by software..

TCBGTIE

Bit 24: Transmission Complete before guard time, interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RXFTCFG

Bits 25-27: Receive FIFO threshold configuration Remaining combinations: Reserved.

RXFTIE

Bit 28: RXFIFO threshold interrupt enable This bit is set and cleared by software..

TXFTCFG

Bits 29-31: TXFIFO threshold configuration Remaining combinations: Reserved.

USART_BRR

USART baud rate register

Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BRR
rw
Toggle fields

BRR

Bits 0-15: USART baud rate BRR[15:4] BRR[15:4] correspond to USARTDIV[15:4] BRR[3:0] When OVER8 = 0, BRR[3:0] = USARTDIV[3:0]. When OVER8 = 1: BRR[2:0] = USARTDIV[3:0] shifted 1 bit to the right. BRR[3] must be kept cleared..

USART_GTPR

USART guard time and prescaler register

Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
GT
rw
PSC
rw
Toggle fields

PSC

Bits 0-7: Prescaler value PSC[7:0] = IrDA Normal and Low-power baud rate This bitfield is used for programming the prescaler for dividing the USART source clock to achieve the low-power frequency: The source clock is divided by the value given in the register (8 significant bits): ... PSC[4:0]: Prescaler value This bitfield is used for programming the prescaler for dividing the USART source clock to provide the Smartcard clock. The value given in the register (5 significant bits) is multiplied by 2 to give the division factor of the source clock frequency: ... This bitfield can only be written when the USART is disabled (UE=0). Note: Bits [7:5] must be kept cleared if Smartcard mode is used. Note: This bitfield is reserved and forced by hardware to 0 when the Smartcard and IrDA modes are not supported. Refer to Section131.4: USART implementation on page1826..

GT

Bits 8-15: Guard time value This bitfield is used to program the Guard time value in terms of number of baud clock periods. This is used in Smartcard mode. The Transmission Complete flag is set after this guard time value. This bitfield can only be written when the USART is disabled (UE=0). Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

USART_RTOR

USART receiver timeout register

Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified

0/2 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BLEN
rw
RTO
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RTO
rw
Toggle fields

RTO

Bits 0-23: Receiver timeout value This bitfield gives the Receiver timeout value in terms of number of bit duration. In Standard mode, the RTOF flag is set if, after the last received character, no new start bit is detected for more than the RTO value. In Smartcard mode, this value is used to implement the CWT and BWT. See Smartcard chapter for more details. In the standard, the CWT/BWT measurement is done starting from the start bit of the last received character. Note: This value must only be programmed once per received character..

BLEN

Bits 24-31: Block Length This bitfield gives the Block length in Smartcard T=1 Reception. Its value equals the number of information characters + the length of the Epilogue Field (1-LEC/2-CRC) - 1. Examples: BLEN = 0 -> 0 information characters + LEC BLEN = 1 -> 0 information characters + CRC BLEN = 255 -> 254 information characters + CRC (total 256 characters)) In Smartcard mode, the Block length counter is reset when TXE=0 (TXFE = 0 in case FIFO mode is enabled). This bitfield can be used also in other modes. In this case, the Block length counter is reset when RE=0 (receiver disabled) and/or when the EOBCF bit is written to 1. Note: This value can be programmed after the start of the block reception (using the data from the LEN character in the Prologue Field). It must be programmed only once per received block..

USART_RQR

USART request register

Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified

0/5 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TXFRQ
w
RXFRQ
w
MMRQ
w
SBKRQ
w
ABRRQ
w
Toggle fields

ABRRQ

Bit 0: Auto baud rate request Writing 1 to this bit resets the ABRF and ABRE flags in the USART_ISR and requests an automatic baud rate measurement on the next received data frame. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

SBKRQ

Bit 1: Send break request Writing 1 to this bit sets the SBKF flag and request to send a BREAK on the line, as soon as the transmit machine is available. Note: When the application needs to send the break character following all previously inserted data, including the ones not yet transmitted, the software must wait for the TXE flag assertion before setting the SBKRQ bit..

MMRQ

Bit 2: Mute mode request Writing 1 to this bit puts the USART in Mute mode and resets the RWU flag..

RXFRQ

Bit 3: Receive data flush request Writing 1 to this bit empties the entire receive FIFO i.e. clears the bit RXFNE. This enables to discard the received data without reading them, and avoid an overrun condition..

TXFRQ

Bit 4: Transmit data flush request When FIFO mode is disabled, writing 1 to this bit sets the TXE flag. This enables to discard the transmit data. This bit must be used only in Smartcard mode, when data have not been sent due to errors (NACK) and the FE flag is active in the USART_ISR register. If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. When FIFO is enabled, TXFRQ bit is set to flush the whole FIFO. This sets the TXFE flag (Transmit FIFO empty, bit 23 in the USART_ISR register). Flushing the Transmit FIFO is supported in both UART and Smartcard modes. Note: In FIFO mode, the TXFNF flag is reset during the flush request until TxFIFO is empty in order to ensure that no data are written in the data register..

USART_ISR

USART interrupt and status register

Offset: 0x1c, size: 32, reset: 0x000000C0, access: Unspecified

28/28 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TXFT
r
RXFT
r
TCBGT
r
RXFF
r
TXFE
r
REACK
r
TEACK
r
WUF
r
RWU
r
SBKF
r
CMF
r
BUSY
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ABRF
r
ABRE
r
UDR
r
EOBF
r
RTOF
r
CTS
r
CTSIF
r
LBDF
r
TXFNF
r
TC
r
RXFNE
r
IDLE
r
ORE
r
NE
r
FE
r
PE
r
Toggle fields

PE

Bit 0: Parity error This bit is set by hardware when a parity error occurs in Reception mode. It is cleared by software, writing 1 to the PECF in the USART_ICR register. An interrupt is generated if PEIE = 1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..

FE

Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the USART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE1=11 in the USART_CR3 register. Note: This error is associated with the character in the USART_RDR..

NE

Bit 2: Noise detection flag This bit is set by hardware when noise is detected on a received frame. It is cleared by software, writing 1 to the NFCF bit in the USART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXFNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. Note: When the line is noise-free, the NE flag can be disabled by programming the ONEBIT bit to 1 to increase the USART tolerance to deviations (Refer to Section131.5.9: Tolerance of the USART receiver to clock deviation on page1845). Note: This error is associated with the character in the USART_RDR..

ORE

Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the USART_RDR register while RXFF = 1. It is cleared by a software, writing 1 to the ORECF, in the USART_ICR register. An interrupt is generated if RXFNEIE=1 in the USART_CR1 register, or EIE = 1 in the USART_CR3 register. Note: When this bit is set, the USART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. Note: This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the USART_CR3 register..

IDLE

Bit 4: Idle line detected This bit is set by hardware when an Idle Line is detected. An interrupt is generated if IDLEIE=1 in the USART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the USART_ICR register. Note: The IDLE bit is not set again until the RXFNE bit has been set (i.e. a new idle line occurs). Note: If Mute mode is enabled (MME=1), IDLE is set if the USART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..

RXFNE

Bit 5: RXFIFO not empty RXFNE bit is set by hardware when the RXFIFO is not empty, meaning that data can be read from the USART_RDR register. Every read operation from the USART_RDR frees a location in the RXFIFO. RXFNE is cleared when the RXFIFO is empty. The RXFNE flag can also be cleared by writing 1 to the RXFRQ in the USART_RQR register. An interrupt is generated if RXFNEIE=1 in the USART_CR1 register..

TC

Bit 6: Transmission complete This bit indicates that the last data written in the USART_TDR has been transmitted out of the shift register. The TC flag behaves as follows: When TDN = 0, the TC flag is set when the transmission of a frame containing data is complete and when TXE/TXFE is set. When TDN is equal to the number of data in the TXFIFO, the TC flag is set when TXFIFO is empty and TDN is reached. When TDN is greater than the number of data in the TXFIFO, TC remains cleared until the TXFIFO is filled again to reach the programmed number of data to be transferred. When TDN is less than the number of data in the TXFIFO, TC is set when TDN is reached even if the TXFIFO is not empty. An interrupt is generated if TCIE=1 in the USART_CR1 register. TC bit is cleared by software by writing 1 to the TCCF in the USART_ICR register or by writing to the USART_TDR register..

TXFNF

Bit 7: TXFIFO not full TXFNF is set by hardware when TXFIFO is not full meaning that data can be written in the USART_TDR. Every write operation to the USART_TDR places the data in the TXFIFO. This flag remains set until the TXFIFO is full. When the TXFIFO is full, this flag is cleared indicating that data can not be written into the USART_TDR. An interrupt is generated if the TXFNFIE bit =1 in the USART_CR1 register. Note: The TXFNF is kept reset during the flush request until TXFIFO is empty. After sending the flush request (by setting TXFRQ bit), the flag TXFNF must be checked prior to writing in TXFIFO (TXFNF and TXFE is set at the same time). Note: This bit is used during single buffer transmission..

LBDF

Bit 8: LIN break detection flag This bit is set by hardware when the LIN break is detected. It is cleared by software, by writing 1 to the LBDCF in the USART_ICR. An interrupt is generated if LBDIE = 1 in the USART_CR2 register. Note: If the USART does not support LIN mode, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSIF

Bit 9: CTS interrupt flag This bit is set by hardware when the CTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the USART_ICR register. An interrupt is generated if CTSIE=1 in the USART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

CTS

Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the CTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

RTOF

Bit 11: Receiver timeout This bit is set by hardware when the timeout value, programmed in the RTOR register has lapsed, without any communication. It is cleared by software, writing 1 to the RTOCF bit in the USART_ICR register. An interrupt is generated if RTOIE=1 in the USART_CR2 register. In Smartcard mode, the timeout corresponds to the CWT or BWT timings. Note: If a time equal to the value programmed in RTOR register separates 2 characters, RTOF is not set. If this time exceeds this value + 2 sample times (2/16 or 2/8, depending on the oversampling method), RTOF flag is set. Note: The counter counts even if RE = 0 but RTOF is set only when RE = 1. If the timeout has already elapsed when RE is set, then RTOF is set. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and kept at reset value..

EOBF

Bit 12: End of block flag This bit is set by hardware when a complete block has been received (for example T=1 Smartcard mode). The detection is done when the number of received bytes (from the start of the block, including the prologue) is equal or greater than BLEN + 4. An interrupt is generated if EOBIE1=11 in the USART_CR1 register. It is cleared by software, writing 1 to EOBCF in the USART_ICR register. Note: If Smartcard mode is not supported, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

UDR

Bit 13: SPI slave underrun error flag In Slave transmission mode, this flag is set when the first clock pulse for data transmission appears while the software has not yet loaded any value into USART_TDR. This flag is reset by setting UDRCF bit in the USART_ICR register. Note: If the USART does not support the SPI slave mode, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

ABRE

Bit 14: Auto baud rate error This bit is set by hardware if the baud rate measurement failed (baud rate out of range or character comparison failed) It is cleared by software, by writing 1 to the ABRRQ bit in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..

ABRF

Bit 15: Auto baud rate flag This bit is set by hardware when the automatic baud rate has been set (RXFNE is also set, generating an interrupt if RXFNEIE = 1) or when the auto baud rate operation was completed without success (ABRE=1) (ABRE, RXFNE and FE are also set in this case) It is cleared by software, in order to request a new auto baud rate detection, by writing 1 to the ABRRQ in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..

BUSY

Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..

CMF

Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the USART_ICR register. An interrupt is generated if CMIE=1in the USART_CR1 register..

SBKF

Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the USART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..

RWU

Bit 19: Receiver wake-up from Mute mode This bit indicates if the USART is in Mute mode. It is cleared/set by hardware when a wake-up/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the USART_CR1 register. When wake-up on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the USART_RQR register. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUF

Bit 20: Wake-up from low-power mode flag This bit is set by hardware, when a wake-up event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the USART_ICR register. An interrupt is generated if WUFIE=1 in the USART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

TEACK

Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the USART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the USART_CR1 register, in order to respect the TE=0 minimum period..

REACK

Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the USART. It can be used to verify that the USART is ready for reception before entering low-power mode. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

TXFE

Bit 23: TXFIFO Empty This bit is set by hardware when TXFIFO is Empty. When the TXFIFO contains at least one data, this flag is cleared. The TXFE flag can also be set by writing 1 to the bit TXFRQ (bit 4) in the USART_RQR register. An interrupt is generated if the TXFEIE bit =1 (bit 30) in the USART_CR1 register..

RXFF

Bit 24: RXFIFO Full This bit is set by hardware when the number of received data corresponds to RXFIFO1size1+11 (RXFIFO full + 1 data in the USART_RDR register. An interrupt is generated if the RXFFIE bit =1 in the USART_CR1 register..

TCBGT

Bit 25: Transmission complete before guard time flag This bit is set when the last data written in the USART_TDR has been transmitted correctly out of the shift register. It is set by hardware in Smartcard mode, if the transmission of a frame containing data is complete and if the smartcard did not send back any NACK. An interrupt is generated if TCBGTIE=1 in the USART_CR3 register. This bit is cleared by software, by writing 1 to the TCBGTCF in the USART_ICR register or by a write to the USART_TDR register. Note: If the USART does not support the Smartcard mode, this bit is reserved and kept at reset value. If the USART supports the Smartcard mode and the Smartcard mode is enabled, the TCBGT reset value is 1. Refer to Section131.4: USART implementation on page1826..

RXFT

Bit 26: RXFIFO threshold flag This bit is set by hardware when the threshold programmed in RXFTCFG in USART_CR3 register is reached. This means that there are (RXFTCFG - 1) data in the Receive FIFO and one data in the USART_RDR register. An interrupt is generated if the RXFTIE bit =1 (bit 27) in the USART_CR3 register. Note: When the RXFTCFG threshold is configured to 101, RXFT flag is set if 16 data are available i.e. 15 data in the RXFIFO and 1 data in the USART_RDR. Consequently, the 17th received data does not cause an overrun error. The overrun error occurs after receiving the 18th data..

TXFT

Bit 27: TXFIFO threshold flag This bit is set by hardware when the TXFIFO reaches the threshold programmed in TXFTCFG of USART_CR3 register i.e. the TXFIFO contains TXFTCFG empty locations. An interrupt is generated if the TXFTIE bit =1 (bit 31) in the USART_CR3 register..

USART_ISR_ALTERNATE

USART interrupt and status register

Offset: 0x1c, size: 32, reset: 0x000000C0, access: Unspecified

24/24 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TCBGT
r
REACK
r
TEACK
r
WUF
r
RWU
r
SBKF
r
CMF
r
BUSY
r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ABRF
r
ABRE
r
UDR
r
EOBF
r
RTOF
r
CTS
r
CTSIF
r
LBDF
r
TXE
r
TC
r
RXNE
r
IDLE
r
ORE
r
NE
r
FE
r
PE
r
Toggle fields

PE

Bit 0: Parity error This bit is set by hardware when a parity error occurs in Reception mode. It is cleared by software, writing 1 to the PECF in the USART_ICR register. An interrupt is generated if PEIE = 1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..

FE

Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the USART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE1=11 in the USART_CR3 register. Note: This error is associated with the character in the USART_RDR..

NE

Bit 2: Noise detection flag This bit is set by hardware when noise is detected on a received frame. It is cleared by software, writing 1 to the NFCF bit in the USART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. Note: When the line is noise-free, the NE flag can be disabled by programming the ONEBIT bit to 1 to increase the USART tolerance to deviations (Refer to Section131.5.9: Tolerance of the USART receiver to clock deviation on page1845). Note: This error is associated with the character in the USART_RDR..

ORE

Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the USART_RDR register while RXNE=1. It is cleared by a software, writing 1 to the ORECF, in the USART_ICR register. An interrupt is generated if RXNEIE=1 in the USART_CR1 register, or EIE = 1 in the USART_CR3 register. Note: When this bit is set, the USART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. Note: This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the USART_CR3 register..

IDLE

Bit 4: Idle line detected This bit is set by hardware when an Idle Line is detected. An interrupt is generated if IDLEIE=1 in the USART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the USART_ICR register. Note: The IDLE bit is not set again until the RXNE bit has been set (i.e. a new idle line occurs). Note: If Mute mode is enabled (MME=1), IDLE is set if the USART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..

RXNE

Bit 5: Read data register not empty RXNE bit is set by hardware when the content of the USART_RDR shift register has been transferred to the USART_RDR register. It is cleared by reading from the USART_RDR register. The RXNE flag can also be cleared by writing 1 to the RXFRQ in the USART_RQR register. An interrupt is generated if RXNEIE=1 in the USART_CR1 register..

TC

Bit 6: Transmission complete This bit indicates that the last data written in the USART_TDR has been transmitted out of the shift register. The TC flag is set when the transmission of a frame containing data is complete and when TXE is set. An interrupt is generated if TCIE=1 in the USART_CR1 register. TC bit is cleared by software by writing 1 to the TCCF in the USART_ICR register or by writing to the USART_TDR register..

TXE

Bit 7: Transmit data register empty TXE is set by hardware when the content of the USART_TDR register has been transferred into the shift register. It is cleared by writing to the USART_TDR register. The TXE flag can also be set by writing 1 to the TXFRQ in the USART_RQR register, in order to discard the data (only in Smartcard T=0 mode, in case of transmission failure). An interrupt is generated if the TXEIE bit =1 in the USART_CR1 register..

LBDF

Bit 8: LIN break detection flag This bit is set by hardware when the LIN break is detected. It is cleared by software, by writing 1 to the LBDCF in the USART_ICR. An interrupt is generated if LBDIE = 1 in the USART_CR2 register. Note: If the USART does not support LIN mode, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSIF

Bit 9: CTS interrupt flag This bit is set by hardware when the CTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the USART_ICR register. An interrupt is generated if CTSIE=1 in the USART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

CTS

Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the CTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

RTOF

Bit 11: Receiver timeout This bit is set by hardware when the timeout value, programmed in the RTOR register has lapsed, without any communication. It is cleared by software, writing 1 to the RTOCF bit in the USART_ICR register. An interrupt is generated if RTOIE=1 in the USART_CR2 register. In Smartcard mode, the timeout corresponds to the CWT or BWT timings. Note: If a time equal to the value programmed in RTOR register separates 2 characters, RTOF is not set. If this time exceeds this value + 2 sample times (2/16 or 2/8, depending on the oversampling method), RTOF flag is set. Note: The counter counts even if RE = 0 but RTOF is set only when RE = 1. If the timeout has already elapsed when RE is set, then RTOF is set. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and kept at reset value..

EOBF

Bit 12: End of block flag This bit is set by hardware when a complete block has been received (for example T=1 Smartcard mode). The detection is done when the number of received bytes (from the start of the block, including the prologue) is equal or greater than BLEN + 4. An interrupt is generated if EOBIE1=11 in the USART_CR1 register. It is cleared by software, writing 1 to EOBCF in the USART_ICR register. Note: If Smartcard mode is not supported, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

UDR

Bit 13: SPI slave underrun error flag In Slave transmission mode, this flag is set when the first clock pulse for data transmission appears while the software has not yet loaded any value into USART_TDR. This flag is reset by setting UDRCF bit in the USART_ICR register. Note: If the USART does not support the SPI slave mode, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

ABRE

Bit 14: Auto baud rate error This bit is set by hardware if the baud rate measurement failed (baud rate out of range or character comparison failed) It is cleared by software, by writing 1 to the ABRRQ bit in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..

ABRF

Bit 15: Auto baud rate flag This bit is set by hardware when the automatic baud rate has been set (RXNE is also set, generating an interrupt if RXNEIE = 1) or when the auto baud rate operation was completed without success (ABRE=1) (ABRE, RXNE and FE are also set in this case) It is cleared by software, in order to request a new auto baud rate detection, by writing 1 to the ABRRQ in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..

BUSY

Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..

CMF

Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the USART_ICR register. An interrupt is generated if CMIE=1in the USART_CR1 register..

SBKF

Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the USART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..

RWU

Bit 19: Receiver wake-up from Mute mode This bit indicates if the USART is in Mute mode. It is cleared/set by hardware when a wake-up/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the USART_CR1 register. When wake-up on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the USART_RQR register. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

WUF

Bit 20: Wake-up from low-power mode flag This bit is set by hardware, when a wake-up event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the USART_ICR register. An interrupt is generated if WUFIE=1 in the USART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

TEACK

Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the USART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the USART_CR1 register, in order to respect the TE=0 minimum period..

REACK

Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the USART. It can be used to verify that the USART is ready for reception before entering low-power mode. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and kept at reset value. Refer to Section131.4: USART implementation on page1826..

TCBGT

Bit 25: Transmission complete before guard time flag This bit is set when the last data written in the USART_TDR has been transmitted correctly out of the shift register. It is set by hardware in Smartcard mode, if the transmission of a frame containing data is complete and if the smartcard did not send back any NACK. An interrupt is generated if TCBGTIE=1 in the USART_CR3 register. This bit is cleared by software, by writing 1 to the TCBGTCF in the USART_ICR register or by a write to the USART_TDR register. Note: If the USART does not support the Smartcard mode, this bit is reserved and kept at reset value. If the USART supports the Smartcard mode and the Smartcard mode is enabled, the TCBGT reset value is 1. Refer to Section131.4: USART implementation on page1826..

USART_ICR

USART interrupt flag clear register

Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified

0/15 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
WUCF
w
CMCF
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UDRCF
w
EOBCF
w
RTOCF
w
CTSCF
w
LBDCF
w
TCBGTCF
w
TCCF
w
TXFECF
w
IDLECF
w
ORECF
w
NECF
w
FECF
w
PECF
w
Toggle fields

PECF

Bit 0: Parity error clear flag Writing 1 to this bit clears the PE flag in the USART_ISR register..

FECF

Bit 1: Framing error clear flag Writing 1 to this bit clears the FE flag in the USART_ISR register..

NECF

Bit 2: Noise detected clear flag Writing 1 to this bit clears the NE flag in the USART_ISR register..

ORECF

Bit 3: Overrun error clear flag Writing 1 to this bit clears the ORE flag in the USART_ISR register..

IDLECF

Bit 4: Idle line detected clear flag Writing 1 to this bit clears the IDLE flag in the USART_ISR register..

TXFECF

Bit 5: TXFIFO empty clear flag Writing 1 to this bit clears the TXFE flag in the USART_ISR register..

TCCF

Bit 6: Transmission complete clear flag Writing 1 to this bit clears the TC flag in the USART_ISR register..

TCBGTCF

Bit 7: Transmission complete before Guard time clear flag Writing 1 to this bit clears the TCBGT flag in the USART_ISR register..

LBDCF

Bit 8: LIN break detection clear flag Writing 1 to this bit clears the LBDF flag in the USART_ISR register. Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

CTSCF

Bit 9: CTS clear flag Writing 1 to this bit clears the CTSIF flag in the USART_ISR register. Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

RTOCF

Bit 11: Receiver timeout clear flag Writing 1 to this bit clears the RTOF flag in the USART_ISR register. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

EOBCF

Bit 12: End of block clear flag Writing 1 to this bit clears the EOBF flag in the USART_ISR register. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

UDRCF

Bit 13: SPI slave underrun clear flag Writing 1 to this bit clears the UDRF flag in the USART_ISR register. Note: If the USART does not support SPI slave mode, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826.

CMCF

Bit 17: Character match clear flag Writing 1 to this bit clears the CMF flag in the USART_ISR register..

WUCF

Bit 20: Wake-up from low-power mode clear flag Writing 1 to this bit clears the WUF flag in the USART_ISR register. Note: If the USART does not support the wake-up from Stop feature, this bit is reserved and must be kept at reset value. Refer to Section131.4: USART implementation on page1826..

USART_RDR

USART receive data register

Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified

1/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RDR
r
Toggle fields

RDR

Bits 0-8: Receive data value Contains the received data character. The RDR register provides the parallel interface between the input shift register and the internal bus (see Figure1227). When receiving with the parity enabled, the value read in the MSB bit is the received parity bit..

USART_TDR

USART transmit data register

Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TDR
rw
Toggle fields

TDR

Bits 0-8: Transmit data value Contains the data character to be transmitted. The USART_TDR register provides the parallel interface between the internal bus and the output shift register (see Figure1227). When transmitting with the parity enabled (PCE bit set to 1 in the USART_CR1 register), the value written in the MSB (bit 7 or bit 8 depending on the data length) has no effect because it is replaced by the parity. Note: This register must be written only when TXE/TXFNF=1..

USART_PRESC

USART prescaler register

Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PRESCALER
rw
Toggle fields

PRESCALER

Bits 0-3: Clock prescaler The USART input clock can be divided by a prescaler factor: Remaining combinations: Reserved Note: When PRESCALER is programmed with a value different of the allowed ones, programmed prescaler value is equal to 1011 i.e. input clock divided by 256..

VREFBUF

0x40010030: VREFBUF address block description

1/5 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 VREFBUF_CSR
0x4 VREFBUF_CCR
Toggle registers

VREFBUF_CSR

VREFBUF control and status register

Offset: 0x0, size: 32, reset: 0x00000002, access: Unspecified

1/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
VRR
r
VRS
rw
HIZ
rw
ENVR
rw
Toggle fields

ENVR

Bit 0: Voltage reference buffer mode enable This bit is used to enable the voltage reference buffer mode..

HIZ

Bit 1: High impedance mode This bit controls the analog switch to connect or not the V<sub>REF+</sub> pin. Refer to Table172: VREF buffer modes for the mode descriptions depending on ENVR bit configuration..

VRS

Bit 2: Voltage reference scale This bit selects the value generated by the voltage reference buffer..

VRR

Bit 3: Voltage reference buffer ready.

VREFBUF_CCR

VREFBUF calibration control register

Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TRIM
rw
Toggle fields

TRIM

Bits 0-5: None.

WWDG

0x40002c00: WWDG address block description

0/6 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0 WWDG_CR
0x4 WWDG_CFR
0x8 WWDG_SR
Toggle registers

WWDG_CR

WWDG control register

Offset: 0x0, size: 32, reset: 0x0000007F, access: Unspecified

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
WDGA
rw
T
rw
Toggle fields

T

Bits 0-6: 7-bit counter (MSB to LSB) These bits contain the value of the watchdog counter, decremented every (4096 x 2<sup>WDGTB[2:0]</sup>) PCLK cycles. A reset is produced when it is decremented from 0x40 to 0x3F (T6 becomes cleared)..

WDGA

Bit 7: Activation bit This bit is set by software and only cleared by hardware after a reset. When WDGA=1, the watchdog can generate a reset..

WWDG_CFR

WWDG configuration register

Offset: 0x4, size: 32, reset: 0x0000007F, access: Unspecified

0/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
WDGTB
rw
EWI
rw
W
rw
Toggle fields

W

Bits 0-6: 7-bit window value These bits contain the window value to be compared with the down-counter..

EWI

Bit 9: Early wake-up interrupt enable Set by software and cleared by hardware after a reset. When set, an interrupt occurs whenever the counter reaches the value 0x40..

WDGTB

Bits 11-13: Timer base The timebase of the prescaler can be modified as follows:.

WWDG_SR

WWDG status register

Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified

0/1 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EWIF
rw
Toggle fields

EWIF

Bit 0: Early wake-up interrupt flag This bit is set by hardware when the counter has reached the value 0x40. It must be cleared by software by writing 0. Writing 1 has no effect. This bit is also set if the interrupt is not enabled..