Overall: 2071/2596 fields covered

ADC

0x40012400: Analog to Digital Converter

161/161 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 ISR
0x4 IER
0x8 CR
0xc CFGR1
0x10 CFGR2
0x14 SMPR
0x20 AWD1TR
0x24 AWD2TR
0x28 CHSELR0
0x28 CHSELR1
0x2c AWD3TR
0x40 DR
0xa0 AWD2CR
0xa4 AWD3CR
0xb4 CALFACT
0x308 CCR
Toggle registers

ISR

ADC interrupt and status register

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

10/10 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCRDY
r/w1c
EOCAL
r/w1c
AWD[3]
r/w1c
AWD[2]
r/w1c
AWD[1]
r/w1c
OVR
r/w1c
EOS
r/w1c
EOC
r/w1c
EOSMP
r/w1c
ADRDY
r/w1c
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..

Allowed values:
0: NotReady: ADC not yet ready to start conversion
1: Ready: ADC ready to start conversion

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..

Allowed values:
0: NotAtEnd: Not at the end of the samplings phase
1: AtEnd: End of sampling phase reached

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..

Allowed values:
0: NotComplete: Channel conversion is not complete
1: Complete: Channel conversion complete

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..

Allowed values:
0: NotComplete: Conversion sequence is not complete
1: Complete: Conversion sequence complete

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..

Allowed values:
0: NoOverrun: No overrun occurred
1: Overrun: Overrun occurred

AWD[1]

Bit 7: Analog watchdog 1 flag.

Allowed values:
0: NoEvent: No analog watchdog event occurred
1: Event: Analog watchdog event occurred

AWD[2]

Bit 8: Analog watchdog 2 flag.

Allowed values:
0: NoEvent: No analog watchdog event occurred
1: Event: Analog watchdog event occurred

AWD[3]

Bit 9: Analog watchdog 3 flag.

Allowed values:
0: NoEvent: No analog watchdog event occurred
1: Event: Analog watchdog event occurred

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..

Allowed values:
0: NotComplete: Calibration is not complete
1: Complete: Calibration complete

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..

Allowed values:
0: NotComplete: Channel configuration update not applied
1: Complete: Channel configuration update is applied

IER

ADC interrupt enable register

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

10/10 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CCRDYIE
rw
EOCALIE
rw
AWD[3]IE
rw
AWD[2]IE
rw
AWD[1]IE
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 to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: Disabled: ADRDY interrupt disabled
1: Enabled: ADRDY interrupt enabled. An interrupt is generated when the ADRDY bit is set.

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 to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: Disabled: EOSMP interrupt disabled
1: Enabled: EOSMP interrupt enabled. An interrupt is generated when the EOSMP bit is set.

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 to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: Disabled: EOC interrupt disabled
1: Enabled: EOC interrupt enabled. An interrupt is generated when the EOC bit is set.

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 to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: Disabled: EOS interrupt disabled
1: Enabled: EOS interrupt enabled. An interrupt is generated when the EOS bit is set.

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 to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: Disabled: Overrun interrupt disabled
1: Enabled: Overrun interrupt enabled. An interrupt is generated when the OVR bit is set.

AWD[1]IE

Bit 7: Analog watchdog 1 interrupt enable.

Allowed values:
0: Disabled: Analog watchdog interrupt disabled
1: Enabled: Analog watchdog interrupt enabled

AWD[2]IE

Bit 8: Analog watchdog 2 interrupt enable.

Allowed values:
0: Disabled: Analog watchdog interrupt disabled
1: Enabled: Analog watchdog interrupt enabled

AWD[3]IE

Bit 9: Analog watchdog 3 interrupt enable.

Allowed values:
0: Disabled: Analog watchdog interrupt disabled
1: Enabled: Analog watchdog interrupt enabled

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 to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: Disabled: End of calibration interrupt disabled
1: Enabled: End of calibration interrupt enabled

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 to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: Disabled: Channel configuration ready interrupt disabled
1: Enabled: Channel configuration ready interrupt enabled

CR

ADC control register

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

6/6 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ADCAL
r/w1s
ADVREGEN
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ADSTP
r/w1s
ADSTART
r/w1s
ADDIS
r/w1s
ADEN
r/w1s
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. Note: The software is allowed to set ADEN only when all bits of ADC_CR registers are 0 (ADCAL = 0, ADSTP = 0, ADSTART = 0, ADDIS = 0 and ADEN = 0).

Allowed values:
0: Disabled: ADC disabled
1: Enabled: ADC enabled

ADDIS

Bit 1: ADC disable command This bit is set by software to disable the ADC (ADDIS command) and put it into power-down state (OFF state). It is cleared by hardware once the ADC is effectively disabled (ADEN is also cleared by hardware at this time). Note: Setting ADDIS to 1 is only effective when ADEN = 1 and ADSTART = 0 (which ensures that no conversion is ongoing).

Allowed values:
0: NotDisabling: No disable command active
1: Disabling: ADC disabling

ADSTART

Bit 2: ADC start conversion command This bit is set by software to start ADC conversion. Depending on the EXTEN [1:0] configuration bits, a conversion either starts immediately (software trigger configuration) or once a hardware trigger event occurs (hardware trigger configuration). It is cleared by hardware: In single conversion mode (CONT = 0, DISCEN = 0), when software trigger is selected (EXTEN = 00): at the assertion of the end of Conversion Sequence (EOS) flag. In discontinuous conversion mode(CONT = 0, DISCEN = 1), when the software trigger is selected (EXTEN = 00): at the assertion of the end of Conversion (EOC) flag. In all other cases: after the execution of the ADSTP command, at the same time as the ADSTP bit is cleared by hardware. Note: The software is allowed to set ADSTART only when ADEN = 1 and ADDIS = 0 (ADC is enabled and there is no pending request to disable the ADC). After writing to ADC_CHSELR register or changing CHSELRMOD or SCANDIRW, it is mandatory to wait until CCRDY flag is asserted before setting ADSTART, otherwise, the value written to ADSTART is ignored..

Allowed values:
0: NotActive: No conversion ongoing
1: Active: ADC operating and may be converting

ADSTP

Bit 4: ADC stop conversion command This bit is set by software to stop and discard an ongoing conversion (ADSTP Command). It is cleared by hardware when the conversion is effectively discarded and the ADC is ready to accept a new start conversion command. Note: Setting ADSTP to 1 is only effective when ADSTART = 1 and ADDIS = 0 (ADC is enabled and may be converting and there is no pending request to disable the ADC).

Allowed values:
0: NotStopping: No stop command active
1: Stopping: ADC stopping conversion

ADVREGEN

Bit 28: ADC Voltage Regulator Enable This bit is set by software, to enable the ADC internal voltage regulator. The voltage regulator output is available after tADCVREG_SETUP. It is cleared by software to disable the voltage regulator. It can be cleared only if ADEN is et to 0. Note: The software is allowed to program this bit field only when the ADC is disabled (ADCAL = 0, ADSTART = 0, ADSTP = 0, ADDIS = 0 and ADEN = 0)..

Allowed values:
0: Disabled: ADC voltage regulator disabled
1: Enabled: ADC voltage regulator enabled

ADCAL

Bit 31: ADC calibration This bit is set by software to start the calibration of the ADC. It is cleared by hardware after calibration is complete. Note: The software is allowed to set ADCAL only when the ADC is disabled (ADCAL = 0, ADSTART = 0, ADSTP = 0, ADDIS = 0 and ADEN = 0). The software is allowed to update the calibration factor by writing ADC_CALFACT only when ADEN = 1 and ADSTART = 0 (ADC enabled and no conversion is ongoing)..

Allowed values:
0: NotCalibrating: ADC calibration either not yet performed or completed
1: Calibrating: ADC calibration in progress

CFGR1

ADC configuration register 1

Offset: 0xc, 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
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 . Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: Disabled: DMA disabled
1: Enabled: DMA enabled

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 DMAEN = 1. For more details, refer to page 355 Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: OneShot: DMA one shot mode selected
1: Circular: DMA circular mode selected

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 to 0. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing). 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..

Allowed values:
0: Upward: Upward scan (from CHSEL0 to CHSEL17)
1: Backward: Backward scan (from CHSEL17 to CHSEL0)

RES

Bits 3-4: Data resolution These bits are written by software to select the resolution of the conversion. Note: The software is allowed to write these bits only when ADEN = 0..

Allowed values:
0: Bits12: 12 bits
1: Bits10: 10 bits
2: Bits8: 8 bits
3: Bits6: 6 bits

ALIGN

Bit 5: Data alignment This bit is set and cleared by software to select right or left alignment. Refer to Data alignment and resolution (oversampling disabled: OVSE = 0) on page 353 Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: Right: Right alignment
1: Left: Left alignment

EXTSEL

Bits 6-8: External trigger selection These bits select the external event used to trigger the start of conversion (refer to External triggers for details): Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: TIM1_TRGO: Timer 1 TRGO event
1: TIM1_CC4: Timer 1 CC4 event
2: TIM2_TRGO: Timer 2 TRGO event
3: TIM2_CH4: Timer 2 CH4 event
5: TIM2_CH3: Timer 2 CH3 event
7: EXTI_LINE11: EXTI line 11 event

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. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: Disabled: Hardware trigger detection disabled
1: RisingEdge: Hardware trigger detection on the rising edge
2: FallingEdge: Hardware trigger detection on the falling edge
3: BothEdges: Hardware trigger detection on both the rising and falling edges

OVRMOD

Bit 12: Overrun management mode This bit is set and cleared by software and configure the way data overruns are managed. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: Preserve: ADC_DR register is preserved with the old data when an overrun is detected
1: Overwrite: ADC_DR register is overwritten with the last conversion result when an overrun is detected

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 DISCEN = 1 and CONT = 1. The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: Single: Single conversion mode
1: Continuous: Continuous conversion mode

WAIT

Bit 14: Wait conversion mode This bit is set and cleared by software to enable/disable wait conversion mode.. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: Disabled: Wait conversion mode off
1: Enabled: Wait conversion mode on

AUTOFF

Bit 15: Auto-off mode This bit is set and cleared by software to enable/disable auto-off mode.. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: Disabled: Auto-off mode disabled
1: Enabled: Auto-off mode enabled

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 DISCEN = 1 and CONT = 1. The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: Disabled: Discontinuous mode disabled
1: Enabled: Discontinuous mode enabled

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: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing). 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..

Allowed values:
0: BitPerInput: Each bit of the ADC_CHSELR register enables an input
1: Sequence: ADC_CHSELR register is able to sequence up to 8 channels

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 Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: AllChannels: Analog watchdog 1 enabled on all channels
1: SingleChannel: Analog watchdog 1 enabled on a single channel

AWD1EN

Bit 23: Analog watchdog enable This bit is set and cleared by software. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: Disabled: Analog watchdog 1 disabled
1: Enabled: Analog watchdog 1 enabled

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. The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..

Allowed values: 0x0-0x11

CFGR2

ADC configuration register 2

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

6/6 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: Software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: Disabled: Oversampler disabled
1: Enabled: Oversampler enabled

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 ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: Mul2: 2x
1: Mul4: 4x
2: Mul8: 8x
3: Mul16: 16x
4: Mul32: 32x
5: Mul64: 64x
6: Mul128: 128x
7: Mul256: 256x

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 ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NoShift: No shift
1: Shift1: Shift 1-bit
2: Shift2: Shift 2-bits
3: Shift3: Shift 3-bits
4: Shift4: Shift 4-bits
5: Shift5: Shift 5-bits
6: Shift6: Shift 6-bits
7: Shift7: Shift 7-bits
8: Shift8: Shift 8-bits

TOVS

Bit 9: Triggered Oversampling This bit is set and cleared by software. Note: The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: TriggerAll: All oversampled conversions for a channel are done consecutively after a trigger
1: TriggerEach: Each oversampled conversion for a channel needs a trigger

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 ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..

Allowed values:
0: Disabled: Low Frequency Trigger Mode disabled
1: Enabled: Low Frequency Trigger Mode enabled

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 (ADCAL = 0, ADSTART = 0, ADSTP = 0, ADDIS = 0 and ADEN = 0)..

Allowed values:
0: ADCLK: ADCCLK (Asynchronous clock mode)
1: PCLK_Div2: PCLK/2 (Synchronous clock mode)
2: PCLK_Div4: PCLK/4 (Synchronous clock mode)
3: PCLK: PCLK (Synchronous clock mode)

SMPR

ADC sampling time register

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

25/25 fields covered.

Toggle fields

SMP[1]

Bits 0-2: Sampling time selection 1.

Allowed values:
0: Cycles1_5: 1.5 ADC clock cycles
1: Cycles3_5: 3.5 ADC clock cycles
2: Cycles7_5: 7.5 ADC clock cycles
3: Cycles12_5: 12.5 ADC clock cycles
4: Cycles19_5: 19.5 ADC clock cycles
5: Cycles39_5: 39.5 ADC clock cycles
6: Cycles79_5: 79.5 ADC clock cycles
7: Cycles160_5: 160.5 ADC clock cycles

SMP[2]

Bits 4-6: Sampling time selection 2.

Allowed values:
0: Cycles1_5: 1.5 ADC clock cycles
1: Cycles3_5: 3.5 ADC clock cycles
2: Cycles7_5: 7.5 ADC clock cycles
3: Cycles12_5: 12.5 ADC clock cycles
4: Cycles19_5: 19.5 ADC clock cycles
5: Cycles39_5: 39.5 ADC clock cycles
6: Cycles79_5: 79.5 ADC clock cycles
7: Cycles160_5: 160.5 ADC clock cycles

SMPSEL[0]

Bit 8: Channel-0 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[1]

Bit 9: Channel-1 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[2]

Bit 10: Channel-2 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[3]

Bit 11: Channel-3 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[4]

Bit 12: Channel-4 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[5]

Bit 13: Channel-5 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[6]

Bit 14: Channel-6 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[7]

Bit 15: Channel-7 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[8]

Bit 16: Channel-8 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[9]

Bit 17: Channel-9 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[10]

Bit 18: Channel-10 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[11]

Bit 19: Channel-11 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[12]

Bit 20: Channel-12 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[13]

Bit 21: Channel-13 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[14]

Bit 22: Channel-14 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[15]

Bit 23: Channel-15 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[16]

Bit 24: Channel-16 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[17]

Bit 25: Channel-17 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[18]

Bit 26: Channel-18 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[19]

Bit 27: Channel-19 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[20]

Bit 28: Channel-20 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[21]

Bit 29: Channel-21 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

SMPSEL[22]

Bit 30: Channel-22 sampling time selection.

Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register

AWD1TR

ADC watchdog threshold register

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

2/2 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 ADC_AWDxTR) on page 359..

Allowed values: 0x0-0xfff

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 ADC_AWDxTR) on page 359..

Allowed values: 0x0-0xfff

AWD2TR

ADC watchdog threshold register

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

2/2 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 ADC_AWDxTR) on page 359..

Allowed values: 0x0-0xfff

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 ADC_AWDxTR) on page 359..

Allowed values: 0x0-0xfff

CHSELR0

ADC channel selection register [alternate]

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

23/23 fields covered.

Toggle fields

CHSEL[0]

Bit 0: Channel-0 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[1]

Bit 1: Channel-1 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[2]

Bit 2: Channel-2 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[3]

Bit 3: Channel-3 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[4]

Bit 4: Channel-4 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[5]

Bit 5: Channel-5 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[6]

Bit 6: Channel-6 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[7]

Bit 7: Channel-7 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[8]

Bit 8: Channel-8 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[9]

Bit 9: Channel-9 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[10]

Bit 10: Channel-10 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[11]

Bit 11: Channel-11 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[12]

Bit 12: Channel-12 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[13]

Bit 13: Channel-13 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[14]

Bit 14: Channel-14 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[15]

Bit 15: Channel-15 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[16]

Bit 16: Channel-16 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[17]

Bit 17: Channel-17 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[18]

Bit 18: Channel-18 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[19]

Bit 19: Channel-19 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[20]

Bit 20: Channel-20 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[21]

Bit 21: Channel-21 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSEL[22]

Bit 22: Channel-22 selection.

Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion

CHSELR1

ADC channel selection register [alternate]

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

8/8 fields covered.

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

SQ[1]

Bits 0-3: 1 conversion of the sequence.

Allowed values:
0: Ch0: Channel 0 selected for the Nth conversion
1: Ch1: Channel 1 selected for the Nth conversion
2: Ch2: Channel 2 selected for the Nth conversion
3: Ch3: Channel 3 selected for the Nth conversion
4: Ch4: Channel 4 selected for the Nth conversion
5: Ch5: Channel 5 selected for the Nth conversion
6: Ch6: Channel 6 selected for the Nth conversion
7: Ch7: Channel 7 selected for the Nth conversion
8: Ch8: Channel 8 selected for the Nth conversion
9: Ch9: Channel 9 selected for the Nth conversion
10: Ch10: Channel 10 selected for the Nth conversion
11: Ch11: Channel 11 selected for the Nth conversion
12: Ch12: Channel 12 selected for the Nth conversion
13: Ch13: Channel 13 selected for the Nth conversion
14: Ch14: Channel 14 selected for the Nth conversion
15: EOS: End of sequence

SQ[2]

Bits 4-7: 2 conversion of the sequence.

Allowed values:
0: Ch0: Channel 0 selected for the Nth conversion
1: Ch1: Channel 1 selected for the Nth conversion
2: Ch2: Channel 2 selected for the Nth conversion
3: Ch3: Channel 3 selected for the Nth conversion
4: Ch4: Channel 4 selected for the Nth conversion
5: Ch5: Channel 5 selected for the Nth conversion
6: Ch6: Channel 6 selected for the Nth conversion
7: Ch7: Channel 7 selected for the Nth conversion
8: Ch8: Channel 8 selected for the Nth conversion
9: Ch9: Channel 9 selected for the Nth conversion
10: Ch10: Channel 10 selected for the Nth conversion
11: Ch11: Channel 11 selected for the Nth conversion
12: Ch12: Channel 12 selected for the Nth conversion
13: Ch13: Channel 13 selected for the Nth conversion
14: Ch14: Channel 14 selected for the Nth conversion
15: EOS: End of sequence

SQ[3]

Bits 8-11: 3 conversion of the sequence.

Allowed values:
0: Ch0: Channel 0 selected for the Nth conversion
1: Ch1: Channel 1 selected for the Nth conversion
2: Ch2: Channel 2 selected for the Nth conversion
3: Ch3: Channel 3 selected for the Nth conversion
4: Ch4: Channel 4 selected for the Nth conversion
5: Ch5: Channel 5 selected for the Nth conversion
6: Ch6: Channel 6 selected for the Nth conversion
7: Ch7: Channel 7 selected for the Nth conversion
8: Ch8: Channel 8 selected for the Nth conversion
9: Ch9: Channel 9 selected for the Nth conversion
10: Ch10: Channel 10 selected for the Nth conversion
11: Ch11: Channel 11 selected for the Nth conversion
12: Ch12: Channel 12 selected for the Nth conversion
13: Ch13: Channel 13 selected for the Nth conversion
14: Ch14: Channel 14 selected for the Nth conversion
15: EOS: End of sequence

SQ[4]

Bits 12-15: 4 conversion of the sequence.

Allowed values:
0: Ch0: Channel 0 selected for the Nth conversion
1: Ch1: Channel 1 selected for the Nth conversion
2: Ch2: Channel 2 selected for the Nth conversion
3: Ch3: Channel 3 selected for the Nth conversion
4: Ch4: Channel 4 selected for the Nth conversion
5: Ch5: Channel 5 selected for the Nth conversion
6: Ch6: Channel 6 selected for the Nth conversion
7: Ch7: Channel 7 selected for the Nth conversion
8: Ch8: Channel 8 selected for the Nth conversion
9: Ch9: Channel 9 selected for the Nth conversion
10: Ch10: Channel 10 selected for the Nth conversion
11: Ch11: Channel 11 selected for the Nth conversion
12: Ch12: Channel 12 selected for the Nth conversion
13: Ch13: Channel 13 selected for the Nth conversion
14: Ch14: Channel 14 selected for the Nth conversion
15: EOS: End of sequence

SQ[5]

Bits 16-19: 5 conversion of the sequence.

Allowed values:
0: Ch0: Channel 0 selected for the Nth conversion
1: Ch1: Channel 1 selected for the Nth conversion
2: Ch2: Channel 2 selected for the Nth conversion
3: Ch3: Channel 3 selected for the Nth conversion
4: Ch4: Channel 4 selected for the Nth conversion
5: Ch5: Channel 5 selected for the Nth conversion
6: Ch6: Channel 6 selected for the Nth conversion
7: Ch7: Channel 7 selected for the Nth conversion
8: Ch8: Channel 8 selected for the Nth conversion
9: Ch9: Channel 9 selected for the Nth conversion
10: Ch10: Channel 10 selected for the Nth conversion
11: Ch11: Channel 11 selected for the Nth conversion
12: Ch12: Channel 12 selected for the Nth conversion
13: Ch13: Channel 13 selected for the Nth conversion
14: Ch14: Channel 14 selected for the Nth conversion
15: EOS: End of sequence

SQ[6]

Bits 20-23: 6 conversion of the sequence.

Allowed values:
0: Ch0: Channel 0 selected for the Nth conversion
1: Ch1: Channel 1 selected for the Nth conversion
2: Ch2: Channel 2 selected for the Nth conversion
3: Ch3: Channel 3 selected for the Nth conversion
4: Ch4: Channel 4 selected for the Nth conversion
5: Ch5: Channel 5 selected for the Nth conversion
6: Ch6: Channel 6 selected for the Nth conversion
7: Ch7: Channel 7 selected for the Nth conversion
8: Ch8: Channel 8 selected for the Nth conversion
9: Ch9: Channel 9 selected for the Nth conversion
10: Ch10: Channel 10 selected for the Nth conversion
11: Ch11: Channel 11 selected for the Nth conversion
12: Ch12: Channel 12 selected for the Nth conversion
13: Ch13: Channel 13 selected for the Nth conversion
14: Ch14: Channel 14 selected for the Nth conversion
15: EOS: End of sequence

SQ[7]

Bits 24-27: 7 conversion of the sequence.

Allowed values:
0: Ch0: Channel 0 selected for the Nth conversion
1: Ch1: Channel 1 selected for the Nth conversion
2: Ch2: Channel 2 selected for the Nth conversion
3: Ch3: Channel 3 selected for the Nth conversion
4: Ch4: Channel 4 selected for the Nth conversion
5: Ch5: Channel 5 selected for the Nth conversion
6: Ch6: Channel 6 selected for the Nth conversion
7: Ch7: Channel 7 selected for the Nth conversion
8: Ch8: Channel 8 selected for the Nth conversion
9: Ch9: Channel 9 selected for the Nth conversion
10: Ch10: Channel 10 selected for the Nth conversion
11: Ch11: Channel 11 selected for the Nth conversion
12: Ch12: Channel 12 selected for the Nth conversion
13: Ch13: Channel 13 selected for the Nth conversion
14: Ch14: Channel 14 selected for the Nth conversion
15: EOS: End of sequence

SQ[8]

Bits 28-31: 8 conversion of the sequence.

Allowed values:
0: Ch0: Channel 0 selected for the Nth conversion
1: Ch1: Channel 1 selected for the Nth conversion
2: Ch2: Channel 2 selected for the Nth conversion
3: Ch3: Channel 3 selected for the Nth conversion
4: Ch4: Channel 4 selected for the Nth conversion
5: Ch5: Channel 5 selected for the Nth conversion
6: Ch6: Channel 6 selected for the Nth conversion
7: Ch7: Channel 7 selected for the Nth conversion
8: Ch8: Channel 8 selected for the Nth conversion
9: Ch9: Channel 9 selected for the Nth conversion
10: Ch10: Channel 10 selected for the Nth conversion
11: Ch11: Channel 11 selected for the Nth conversion
12: Ch12: Channel 12 selected for the Nth conversion
13: Ch13: Channel 13 selected for the Nth conversion
14: Ch14: Channel 14 selected for the Nth conversion
15: EOS: End of sequence

AWD3TR

ADC watchdog threshold register

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

2/2 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 ADC_AWDxTR) on page 359..

Allowed values: 0x0-0xfff

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 ADC_AWDxTR) on page 359..

Allowed values: 0x0-0xfff

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 OVSE = 0) on page 353. Just after a calibration is complete, DATA[6:0] contains the calibration factor..

Allowed values: 0x0-0xffff

AWD2CR

ADC Analog Watchdog 2 Configuration register

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

23/23 fields covered.

Toggle fields

AWD2CH[0]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[1]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[2]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[3]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[4]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[5]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[6]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[7]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[8]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[9]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[10]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[11]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[12]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[13]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[14]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[15]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[16]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[17]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[18]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[19]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[20]

Bit 20: 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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[21]

Bit 21: 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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD2CH[22]

Bit 22: 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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2

AWD3CR

ADC Analog Watchdog 3 Configuration register

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

23/23 fields covered.

Toggle fields

AWD3CH[0]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[1]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[2]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[3]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[4]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[5]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[6]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[7]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[8]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[9]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[10]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[11]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[12]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[13]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[14]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[15]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[16]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[17]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[18]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[19]

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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[20]

Bit 20: 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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[21]

Bit 21: 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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

AWD3CH[22]

Bit 22: 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. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..

Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3

CALFACT

ADC Calibration factor

Offset: 0xb4, 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
CALFACT
rw
Toggle fields

CALFACT

Bits 0-6: Calibration factor These bits are written by hardware or by software. Once a calibration is complete, they 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 calibration 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). Refer to SQ8[3:0] for a definition of channel selection..

Allowed values: 0x0-0x7f

CCR

ADC common configuration register

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

3/3 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
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 (ADCAL = 0, ADSTART = 0, ADSTP = 0, ADDIS = 0 and ADEN = 0)..

Allowed values:
0: Div1: Input ADC clock not divided
1: Div2: Input ADC clock divided by 2
2: Div4: Input ADC clock divided by 4
3: Div6: Input ADC clock divided by 6
4: Div8: Input ADC clock divided by 8
5: Div10: Input ADC clock divided by 10
6: Div12: Input ADC clock divided by 12
7: Div16: Input ADC clock divided by 16
8: Div32: Input ADC clock divided by 32
9: Div64: Input ADC clock divided by 64
10: Div128: Input ADC clock divided by 128
11: Div256: Input ADC clock divided by 256

VREFEN

Bit 22: VREFINT enable This bit is set and cleared by software to enable/disable the VREFINT. Note: Software is allowed to write this bit only when ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: Disabled: The selected ADC channel disabled
1: Enabled: The selected ADC channel enabled

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 ADSTART = 0 (which ensures that no conversion is ongoing)..

Allowed values:
0: Disabled: The selected ADC channel disabled
1: Enabled: The selected ADC channel enabled

CRC

0x40023000: Cyclic redundancy check calculation unit

0/8 fields covered.

Toggle register map
Offset Name
31
30
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26
25
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23
22
21
20
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17
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9
8
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5
4
3
2
1
0
0x0 DR
0x4 IDR
0x8 CR
0x10 INIT
0x14 POL
Toggle registers

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..

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

GPDR

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.

CR

CRC control register

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
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 These bits control the reversal of the bit order of the input data.

REV_OUT

Bit 7: Reverse output data This bit controls the reversal of the bit order of the output data..

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..

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..

DBG

0x40015800: DBG register block

2/13 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
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3
2
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0
0x0 IDCODE
0x4 CR
0x8 APB_FZ1
0xc APB_FZ2
Toggle registers

IDCODE

DBG device ID code register

Offset: 0x0, size: 32, reset: 0x10000453, 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 bitfield indicates the device ID..

REV_ID

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

CR

DBG 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.

DBG_STANDBY

Bit 2: Debug Standby and Shutdown modes.

APB_FZ1

DBG APB freeze register 1

Offset: 0x8, 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
DBG_I2C1_SMBUS_TIMEOUT
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DBG_IWDG_STOP
rw
DBG_WWDG_STOP
rw
DBG_RTC_STOP
rw
DBG_TIM3_STOP
rw
Toggle fields

DBG_TIM3_STOP

Bit 1: Clocking of TIM3 counter when the core is halted This bit enables/disables the clock to the counter of TIM3 when the core is halted:.

DBG_RTC_STOP

Bit 10: Clocking of RTC counter when the core is halted This bit enables/disables the clock to the counter of RTC when the core is halted:.

DBG_WWDG_STOP

Bit 11: Clocking of WWDG counter when the core is halted This bit enables/disables the clock to the counter of WWDG when the core is halted:.

DBG_IWDG_STOP

Bit 12: Clocking of IWDG counter when the core is halted This bit enables/disables the clock to the counter of IWDG when the core is halted:.

DBG_I2C1_SMBUS_TIMEOUT

Bit 21: SMBUS timeout when core is halted.

APB_FZ2

DBG APB freeze register 2

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_TIM17_STOP
rw
DBG_TIM16_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: Clocking of TIM1 counter when the core is halted This bit enables/disables the clock to the counter of TIM1 when the core is halted:.

DBG_TIM14_STOP

Bit 15: Clocking of TIM14 counter when the core is halted This bit enables/disables the clock to the counter of TIM14 when the core is halted:.

DBG_TIM16_STOP

Bit 17: Clocking of TIM16 counter when the core is halted This bit enables/disables the clock to the counter of TIM16 when the core is halted:.

DBG_TIM17_STOP

Bit 18: Clocking of TIM17 counter when the core is halted This bit enables/disables the clock to the counter of TIM17 when the core is halted:.

DMA

0x40020000: DMA controller

63/69 fields covered.

Toggle register map
Offset Name
31
30
29
28
27
26
25
24
23
22
21
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1
0
0x0 ISR
0x4 IFCR
0x8 CR [1]
0xc NDTR [1]
0x10 PAR [1]
0x14 MAR [1]
0x1c CR [2]
0x20 NDTR [2]
0x24 PAR [2]
0x28 MAR [2]
0x30 CR [3]
0x34 NDTR [3]
0x38 PAR [3]
0x3c MAR [3]
Toggle registers

ISR

DMA interrupt status register

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

12/12 fields covered.

Toggle fields

GIF[1]

Bit 0: Channel 1 Global interrupt flag.

Allowed values:
0: NoEvent: No transfer error, half event, complete event
1: Event: A transfer error, half event or complete event has occured

TCIF[1]

Bit 1: Channel 1 Transfer Complete flag.

Allowed values:
0: NotComplete: No transfer complete event
1: Complete: A transfer complete event has occured

HTIF[1]

Bit 2: Channel 1 Half Transfer Complete flag.

Allowed values:
0: NotHalf: No half transfer event
1: Half: A half transfer event has occured

TEIF[1]

Bit 3: Channel 1 Transfer Error flag.

Allowed values:
0: NoError: No transfer error
1: Error: A transfer error has occured

GIF[2]

Bit 4: Channel 2 Global interrupt flag.

Allowed values:
0: NoEvent: No transfer error, half event, complete event
1: Event: A transfer error, half event or complete event has occured

TCIF[2]

Bit 5: Channel 2 Transfer Complete flag.

Allowed values:
0: NotComplete: No transfer complete event
1: Complete: A transfer complete event has occured

HTIF[2]

Bit 6: Channel 2 Half Transfer Complete flag.

Allowed values:
0: NotHalf: No half transfer event
1: Half: A half transfer event has occured

TEIF[2]

Bit 7: Channel 2 Transfer Error flag.

Allowed values:
0: NoError: No transfer error
1: Error: A transfer error has occured

GIF[3]

Bit 8: Channel 3 Global interrupt flag.

Allowed values:
0: NoEvent: No transfer error, half event, complete event
1: Event: A transfer error, half event or complete event has occured

TCIF[3]

Bit 9: Channel 3 Transfer Complete flag.

Allowed values:
0: NotComplete: No transfer complete event
1: Complete: A transfer complete event has occured

HTIF[3]

Bit 10: Channel 3 Half Transfer Complete flag.

Allowed values:
0: NotHalf: No half transfer event
1: Half: A half transfer event has occured

TEIF[3]

Bit 11: Channel 3 Transfer Error flag.

Allowed values:
0: NoError: No transfer error
1: Error: A transfer error has occured

IFCR

DMA interrupt flag clear register

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

12/12 fields covered.

Toggle fields

CGIF[1]

Bit 0: Channel 1 Global interrupt clear.

Allowed values:
1: Clear: Clears the GIF, TEIF, HTIF, TCIF flags in the ISR register

CTCIF[1]

Bit 1: Channel 1 Transfer Complete clear.

Allowed values:
1: Clear: Clears the TCIF flag in the ISR register

CHTIF[1]

Bit 2: Channel 1 Half Transfer clear.

Allowed values:
1: Clear: Clears the HTIF flag in the ISR register

CTEIF[1]

Bit 3: Channel 1 Transfer Error clear.

Allowed values:
1: Clear: Clears the TEIF flag in the ISR register

CGIF[2]

Bit 4: Channel 2 Global interrupt clear.

Allowed values:
1: Clear: Clears the GIF, TEIF, HTIF, TCIF flags in the ISR register

CTCIF[2]

Bit 5: Channel 2 Transfer Complete clear.

Allowed values:
1: Clear: Clears the TCIF flag in the ISR register

CHTIF[2]

Bit 6: Channel 2 Half Transfer clear.

Allowed values:
1: Clear: Clears the HTIF flag in the ISR register

CTEIF[2]

Bit 7: Channel 2 Transfer Error clear.

Allowed values:
1: Clear: Clears the TEIF flag in the ISR register

CGIF[3]

Bit 8: Channel 3 Global interrupt clear.

Allowed values:
1: Clear: Clears the GIF, TEIF, HTIF, TCIF flags in the ISR register

CTCIF[3]

Bit 9: Channel 3 Transfer Complete clear.

Allowed values:
1: Clear: Clears the TCIF flag in the ISR register

CHTIF[3]

Bit 10: Channel 3 Half Transfer clear.

Allowed values:
1: Clear: Clears the HTIF flag in the ISR register

CTEIF[3]

Bit 11: Channel 3 Transfer Error clear.

Allowed values:
1: Clear: Clears the TEIF flag in the ISR register

CR [1]

DMA channel 1 configuration register

Offset: 0x8, 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
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 (by setting the CTEIFx bit of the DMA_IFCR register). Note: this bit is set and cleared by software..

Allowed values:
0: Disabled: Channel disabled
1: Enabled: Channel enabled

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)..

Allowed values:
0: Disabled: Transfer Complete interrupt disabled
1: Enabled: Transfer Complete interrupt enabled

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)..

Allowed values:
0: Disabled: Half Transfer interrupt disabled
1: Enabled: Half Transfer interrupt enabled

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)..

Allowed values:
0: Disabled: Transfer Error interrupt disabled
1: Enabled: Transfer Error interrupt enabled

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)..

Allowed values:
0: FromPeripheral: Read from peripheral
1: FromMemory: Read from memory

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)..

Allowed values:
0: Disabled: Circular buffer disabled
1: Enabled: Circular buffer enabled

PINC

Bit 6: peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this field identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this field 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)..

Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled

MINC

Bit 7: memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this field 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)..

Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled

PSIZE

Bits 8-9: peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this field identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: this field 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)..

Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size

MSIZE

Bits 10-11: memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: this field 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)..

Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size

PL

Bits 12-13: priority level Note: this field 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)..

Allowed values:
0: Low: Low priority
1: Medium: Medium priority
2: High: High priority
3: VeryHigh: Very high priority

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)..

Allowed values:
0: Disabled: Memory to memory mode disabled
1: Enabled: Memory to memory mode enabled

NDTR [1]

DMA channel 1 number of data to transfer register

Offset: 0xc, 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
NDT
rw
Toggle fields

NDT

Bits 0-15: number of data to transfer (0 to 216 - 1) This field is updated by hardware when the channel is enabled: It is decremented after each single DMA read followed by write transfer, indicating the remaining amount of data items to transfer. It is kept at zero when the programmed amount of data to transfer is reached, if the channel is not in circular mode (CIRC = 0 in the DMA_CCRx register). It is reloaded automatically by the previously programmed value, when the transfer is complete, if the channel is in circular mode (CIRC = 1). If this field is zero, no transfer can be served whatever the channel status (enabled or not). Note: this field 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)..

Allowed values: 0x0-0xffff

PAR [1]

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 will be 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 = 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 register identifies the memory destination address if DIR = 1 and the memory source address if DIR = 0. In peripheral-to-peripheral mode, this register identifies the peripheral destination address DIR = 1 and the peripheral source address if DIR = 0. Note: this register 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)..

MAR [1]

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 will be 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 = 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 register identifies the memory source address if DIR = 1 and the memory destination address if DIR = 0. In peripheral-to-peripheral mode, this register identifies the peripheral source address DIR = 1 and the peripheral destination address if DIR = 0. Note: this register 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)..

CR [2]

DMA channel 1 configuration register

Offset: 0x1c, 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
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 (by setting the CTEIFx bit of the DMA_IFCR register). Note: this bit is set and cleared by software..

Allowed values:
0: Disabled: Channel disabled
1: Enabled: Channel enabled

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)..

Allowed values:
0: Disabled: Transfer Complete interrupt disabled
1: Enabled: Transfer Complete interrupt enabled

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)..

Allowed values:
0: Disabled: Half Transfer interrupt disabled
1: Enabled: Half Transfer interrupt enabled

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)..

Allowed values:
0: Disabled: Transfer Error interrupt disabled
1: Enabled: Transfer Error interrupt enabled

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)..

Allowed values:
0: FromPeripheral: Read from peripheral
1: FromMemory: Read from memory

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)..

Allowed values:
0: Disabled: Circular buffer disabled
1: Enabled: Circular buffer enabled

PINC

Bit 6: peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this field identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this field 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)..

Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled

MINC

Bit 7: memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this field 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)..

Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled

PSIZE

Bits 8-9: peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this field identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: this field 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)..

Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size

MSIZE

Bits 10-11: memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: this field 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)..

Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size

PL

Bits 12-13: priority level Note: this field 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)..

Allowed values:
0: Low: Low priority
1: Medium: Medium priority
2: High: High priority
3: VeryHigh: Very high priority

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)..

Allowed values:
0: Disabled: Memory to memory mode disabled
1: Enabled: Memory to memory mode enabled

NDTR [2]

DMA channel 1 number of data to transfer 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
NDT
rw
Toggle fields

NDT

Bits 0-15: number of data to transfer (0 to 216 - 1) This field is updated by hardware when the channel is enabled: It is decremented after each single DMA read followed by write transfer, indicating the remaining amount of data items to transfer. It is kept at zero when the programmed amount of data to transfer is reached, if the channel is not in circular mode (CIRC = 0 in the DMA_CCRx register). It is reloaded automatically by the previously programmed value, when the transfer is complete, if the channel is in circular mode (CIRC = 1). If this field is zero, no transfer can be served whatever the channel status (enabled or not). Note: this field 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)..

Allowed values: 0x0-0xffff

PAR [2]

DMA channel 1 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 will be 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 = 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 register identifies the memory destination address if DIR = 1 and the memory source address if DIR = 0. In peripheral-to-peripheral mode, this register identifies the peripheral destination address DIR = 1 and the peripheral source address if DIR = 0. Note: this register 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)..

MAR [2]

DMA channel 1 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 will be 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 = 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 register identifies the memory source address if DIR = 1 and the memory destination address if DIR = 0. In peripheral-to-peripheral mode, this register identifies the peripheral source address DIR = 1 and the peripheral destination address if DIR = 0. Note: this register 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)..

CR [3]

DMA channel 1 configuration register

Offset: 0x30, 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
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 (by setting the CTEIFx bit of the DMA_IFCR register). Note: this bit is set and cleared by software..

Allowed values:
0: Disabled: Channel disabled
1: Enabled: Channel enabled

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)..

Allowed values:
0: Disabled: Transfer Complete interrupt disabled
1: Enabled: Transfer Complete interrupt enabled

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)..

Allowed values:
0: Disabled: Half Transfer interrupt disabled
1: Enabled: Half Transfer interrupt enabled

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)..

Allowed values:
0: Disabled: Transfer Error interrupt disabled
1: Enabled: Transfer Error interrupt enabled

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)..

Allowed values:
0: FromPeripheral: Read from peripheral
1: FromMemory: Read from memory

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)..

Allowed values:
0: Disabled: Circular buffer disabled
1: Enabled: Circular buffer enabled

PINC

Bit 6: peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this field identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this field 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)..

Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled

MINC

Bit 7: memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this field 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)..

Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled

PSIZE

Bits 8-9: peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this field identifies the memory destination if DIR = 1 and the memory source if DIR = 0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR = 1 and the peripheral source if DIR = 0. Note: this field 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)..

Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size

MSIZE

Bits 10-11: memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR = 1 and the memory destination if DIR = 0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR = 1 and the peripheral destination if DIR = 0. Note: this field 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)..

Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size

PL

Bits 12-13: priority level Note: this field 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)..

Allowed values:
0: Low: Low priority
1: Medium: Medium priority
2: High: High priority
3: VeryHigh: Very high priority

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)..

Allowed values:
0: Disabled: Memory to memory mode disabled
1: Enabled: Memory to memory mode enabled

NDTR [3]

DMA channel 1 number of data to transfer 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
NDT
rw
Toggle fields

NDT

Bits 0-15: number of data to transfer (0 to 216 - 1) This field is updated by hardware when the channel is enabled: It is decremented after each single DMA read followed by write transfer, indicating the remaining amount of data items to transfer. It is kept at zero when the programmed amount of data to transfer is reached, if the channel is not in circular mode (CIRC = 0 in the DMA_CCRx register). It is reloaded automatically by the previously programmed value, when the transfer is complete, if the channel is in circular mode (CIRC = 1). If this field is zero, no transfer can be served whatever the channel status (enabled or not). Note: this field 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)..

Allowed values: 0x0-0xffff

PAR [3]

DMA channel 1 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 will be 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 = 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 register identifies the memory destination address if DIR = 1 and the memory source address if DIR = 0. In peripheral-to-peripheral mode, this register identifies the peripheral destination address DIR = 1 and the peripheral source address if DIR = 0. Note: this register 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)..

MAR [3]

DMA channel 1 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 will be 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 = 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 register identifies the memory source address if DIR = 1 and the memory destination address if DIR = 0. In peripheral-to-peripheral mode, this register identifies the peripheral source address DIR = 1 and the peripheral destination address if DIR = 0. Note: this register 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 register block

45/55 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 CCR[0]
0x4 CCR[1]
0x8 CCR[2]
0x80 CSR
0x84 CFR
0x100 RGCR[0]
0x104 RGCR[1]
0x108 RGCR[2]
0x10c RGCR[3]
0x140 RGSR
0x144 RGCFR
Toggle registers

CCR[0]

DMA Multiplexer Channel 0 Control register

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

5/7 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 0-5: 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.

Allowed values:
0: Disabled: Synchronization overrun interrupt disabled
1: Enabled: Synchronization overrun interrupt enabled

EGE

Bit 9: Event generation enable.

Allowed values:
0: Disabled: Event generation disabled
1: Enabled: Event generation enabled

SE

Bit 16: Synchronization enable.

Allowed values:
0: Disabled: Synchronization disabled
1: Enabled: Synchronization enabled

SPOL

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

Allowed values:
0: NoEdge: No event, i.e. no synchronization nor detection
1: RisingEdge: Rising edge
2: FallingEdge: Falling edge
3: BothEdges: Rising and falling edges

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 shall only be written when both SE and EGE bits are low..

Allowed values: 0x0-0x1f

SYNC_ID

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

CCR[1]

DMA Multiplexer Channel 1 Control register

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

5/7 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 0-5: 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.

Allowed values:
0: Disabled: Synchronization overrun interrupt disabled
1: Enabled: Synchronization overrun interrupt enabled

EGE

Bit 9: Event generation enable.

Allowed values:
0: Disabled: Event generation disabled
1: Enabled: Event generation enabled

SE

Bit 16: Synchronization enable.

Allowed values:
0: Disabled: Synchronization disabled
1: Enabled: Synchronization enabled

SPOL

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

Allowed values:
0: NoEdge: No event, i.e. no synchronization nor detection
1: RisingEdge: Rising edge
2: FallingEdge: Falling edge
3: BothEdges: Rising and falling edges

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 shall only be written when both SE and EGE bits are low..

Allowed values: 0x0-0x1f

SYNC_ID

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

CCR[2]

DMA Multiplexer Channel 2 Control register

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

5/7 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 0-5: 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.

Allowed values:
0: Disabled: Synchronization overrun interrupt disabled
1: Enabled: Synchronization overrun interrupt enabled

EGE

Bit 9: Event generation enable.

Allowed values:
0: Disabled: Event generation disabled
1: Enabled: Event generation enabled

SE

Bit 16: Synchronization enable.

Allowed values:
0: Disabled: Synchronization disabled
1: Enabled: Synchronization enabled

SPOL

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

Allowed values:
0: NoEdge: No event, i.e. no synchronization nor detection
1: RisingEdge: Rising edge
2: FallingEdge: Falling edge
3: BothEdges: Rising and falling edges

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 shall only be written when both SE and EGE bits are low..

Allowed values: 0x0-0x1f

SYNC_ID

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

CSR

DMAMUX request line multiplexer interrupt channel status register

Offset: 0x80, 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
SOF[2]
r
SOF[1]
r
SOF[0]
r
Toggle fields

SOF[0]

Bit 0: Synchronization Overrun Flag 0.

Allowed values:
0: NoSyncEvent: No synchronization event occured on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ
1: SyncEvent: Synchronization event occured on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ

SOF[1]

Bit 1: Synchronization Overrun Flag 1.

Allowed values:
0: NoSyncEvent: No synchronization event occured on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ
1: SyncEvent: Synchronization event occured on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ

SOF[2]

Bit 2: Synchronization Overrun Flag 2.

Allowed values:
0: NoSyncEvent: No synchronization event occured on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ
1: SyncEvent: Synchronization event occured on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ

CFR

DMAMUX request line multiplexer interrupt clear flag register

Offset: 0x84, 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
CSOF[2]
w1c
CSOF[1]
w1c
CSOF[0]
w1c
Toggle fields

CSOF[0]

Bit 0: Synchronization Clear Overrun Flag 0.

Allowed values:
1: Clear: Clear synchronization flag

CSOF[1]

Bit 1: Synchronization Clear Overrun Flag 1.

Allowed values:
1: Clear: Clear synchronization flag

CSOF[2]

Bit 2: Synchronization Clear Overrun Flag 2.

Allowed values:
1: Clear: Clear synchronization flag

RGCR[0]

DMAMUX request generator channel 0 configuration register

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

4/5 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.

Allowed values:
0: Disabled: Trigger overrun interrupt disabled
1: Enabled: Trigger overrun interrupt enabled

GE

Bit 16: DMA request generator channel x enable.

Allowed values:
0: Disabled: DMA request generation disabled
1: Enabled: DMA request enabled

GPOL

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

Allowed values:
0: NoEdge: No event, i.e. no detection nor generation
1: RisingEdge: Rising edge
2: FallingEdge: Falling edge
3: BothEdges: Rising and falling edges

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..

Allowed values: 0x0-0x1f

RGCR[1]

DMAMUX request generator channel 1 configuration register

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

4/5 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.

Allowed values:
0: Disabled: Trigger overrun interrupt disabled
1: Enabled: Trigger overrun interrupt enabled

GE

Bit 16: DMA request generator channel x enable.

Allowed values:
0: Disabled: DMA request generation disabled
1: Enabled: DMA request enabled

GPOL

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

Allowed values:
0: NoEdge: No event, i.e. no detection nor generation
1: RisingEdge: Rising edge
2: FallingEdge: Falling edge
3: BothEdges: Rising and falling edges

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..

Allowed values: 0x0-0x1f

RGCR[2]

DMAMUX request generator channel 2 configuration register

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

4/5 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.

Allowed values:
0: Disabled: Trigger overrun interrupt disabled
1: Enabled: Trigger overrun interrupt enabled

GE

Bit 16: DMA request generator channel x enable.

Allowed values:
0: Disabled: DMA request generation disabled
1: Enabled: DMA request enabled

GPOL

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

Allowed values:
0: NoEdge: No event, i.e. no detection nor generation
1: RisingEdge: Rising edge
2: FallingEdge: Falling edge
3: BothEdges: Rising and falling edges

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..

Allowed values: 0x0-0x1f

RGCR[3]

DMAMUX request generator channel 3 configuration register

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

4/5 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.

Allowed values:
0: Disabled: Trigger overrun interrupt disabled
1: Enabled: Trigger overrun interrupt enabled

GE

Bit 16: DMA request generator channel x enable.

Allowed values:
0: Disabled: DMA request generation disabled
1: Enabled: DMA request enabled

GPOL

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

Allowed values:
0: NoEdge: No event, i.e. no detection nor generation
1: RisingEdge: Rising edge
2: FallingEdge: Falling edge
3: BothEdges: Rising and falling edges

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..

Allowed values: 0x0-0x1f

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
OF[3]
r
OF[2]
r
OF[1]
r
OF[0]
r
Toggle fields

OF[0]

Bit 0: Generator Overrun Flag 0.

Allowed values:
0: NoTrigger: No new trigger event occured on DMA request generator channel x, before the request counter underrun
1: Trigger: New trigger event occured on DMA request generator channel x, before the request counter underrun

OF[1]

Bit 1: Generator Overrun Flag 1.

Allowed values:
0: NoTrigger: No new trigger event occured on DMA request generator channel x, before the request counter underrun
1: Trigger: New trigger event occured on DMA request generator channel x, before the request counter underrun

OF[2]

Bit 2: Generator Overrun Flag 2.

Allowed values:
0: NoTrigger: No new trigger event occured on DMA request generator channel x, before the request counter underrun
1: Trigger: New trigger event occured on DMA request generator channel x, before the request counter underrun

OF[3]

Bit 3: Generator Overrun Flag 3.

Allowed values:
0: NoTrigger: No new trigger event occured on DMA request generator channel x, before the request counter underrun
1: Trigger: New trigger event occured on DMA request generator channel x, before the request counter underrun

RGCFR

DMAMUX request generator interrupt clear flag register

Offset: 0x144, 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
COF[3]
w1c
COF[2]
w1c
COF[1]
w1c
COF[0]
w1c
Toggle fields

COF[0]

Bit 0: Generator Clear Overrun Flag 0.

Allowed values:
1: Clear: Clear overrun flag

COF[1]

Bit 1: Generator Clear Overrun Flag 1.

Allowed values:
1: Clear: Clear overrun flag

COF[2]

Bit 2: Generator Clear Overrun Flag 2.

Allowed values:
1: Clear: Clear overrun flag

COF[3]

Bit 3: Generator Clear Overrun Flag 3.

Allowed values:
1: Clear: Clear overrun flag

EXTI

0x40021800: EXTI address block description

0/106 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 RTSR1
0x4 FTSR1
0x8 SWIER1
0xc RPR1
0x10 FPR1
0x60 EXTICR1
0x64 EXTICR2
0x68 EXTICR3
0x6c EXTICR4
0x80 IMR1
0x84 EMR1
Toggle registers

RTSR1

EXTI rising trigger selection register

Offset: 0x0, 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
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 (x = 15 to 0) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line..

RT1

Bit 1: Rising trigger event configuration bit of configurable line x (x = 15 to 0) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line..

RT2

Bit 2: Rising trigger event configuration bit of configurable line x (x = 15 to 0) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line..

RT3

Bit 3: Rising trigger event configuration bit of configurable line x (x = 15 to 0) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line..

RT4

Bit 4: Rising trigger event configuration bit of configurable line x (x = 15 to 0) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line..

RT5

Bit 5: Rising trigger event configuration bit of configurable line x (x = 15 to 0) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line..

RT6

Bit 6: Rising trigger event configuration bit of configurable line x (x = 15 to 0) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line..

RT7

Bit 7: Rising trigger event configuration bit of configurable line x (x = 15 to 0) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line..

RT8

Bit 8: Rising trigger event configuration bit of configurable line x (x = 15 to 0) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line..

RT9

Bit 9: Rising trigger event configuration bit of configurable line x (x = 15 to 0) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line..

RT10

Bit 10: Rising trigger event configuration bit of configurable line x (x = 15 to 0) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line..

RT11

Bit 11: Rising trigger event configuration bit of configurable line x (x = 15 to 0) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line..

RT12

Bit 12: Rising trigger event configuration bit of configurable line x (x = 15 to 0) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line..

RT13

Bit 13: Rising trigger event configuration bit of configurable line x (x = 15 to 0) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line..

RT14

Bit 14: Rising trigger event configuration bit of configurable line x (x = 15 to 0) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line..

RT15

Bit 15: Rising trigger event configuration bit of configurable line x (x = 15 to 0) Each bit enables/disables the rising edge trigger for the event and interrupt on the corresponding line..

FTSR1

EXTI falling trigger selection register 1

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
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 (x = 15 to 0). Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line..

FT1

Bit 1: Falling trigger event configuration bit of configurable line x (x = 15 to 0). Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line..

FT2

Bit 2: Falling trigger event configuration bit of configurable line x (x = 15 to 0). Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line..

FT3

Bit 3: Falling trigger event configuration bit of configurable line x (x = 15 to 0). Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line..

FT4

Bit 4: Falling trigger event configuration bit of configurable line x (x = 15 to 0). Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line..

FT5

Bit 5: Falling trigger event configuration bit of configurable line x (x = 15 to 0). Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line..

FT6

Bit 6: Falling trigger event configuration bit of configurable line x (x = 15 to 0). Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line..

FT7

Bit 7: Falling trigger event configuration bit of configurable line x (x = 15 to 0). Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line..

FT8

Bit 8: Falling trigger event configuration bit of configurable line x (x = 15 to 0). Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line..

FT9

Bit 9: Falling trigger event configuration bit of configurable line x (x = 15 to 0). Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line..

FT10

Bit 10: Falling trigger event configuration bit of configurable line x (x = 15 to 0). Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line..

FT11

Bit 11: Falling trigger event configuration bit of configurable line x (x = 15 to 0). Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line..

FT12

Bit 12: Falling trigger event configuration bit of configurable line x (x = 15 to 0). Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line..

FT13

Bit 13: Falling trigger event configuration bit of configurable line x (x = 15 to 0). Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line..

FT14

Bit 14: Falling trigger event configuration bit of configurable line x (x = 15 to 0). Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line..

FT15

Bit 15: Falling trigger event configuration bit of configurable line x (x = 15 to 0). Each bit enables/disables the falling edge trigger for the event and interrupt on the corresponding line..

SWIER1

EXTI software interrupt event register 1

Offset: 0x8, 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
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 (x = 15 to 0) 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..

SWI1

Bit 1: Software rising edge event trigger on line x (x = 15 to 0) 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..

SWI2

Bit 2: Software rising edge event trigger on line x (x = 15 to 0) 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..

SWI3

Bit 3: Software rising edge event trigger on line x (x = 15 to 0) 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..

SWI4

Bit 4: Software rising edge event trigger on line x (x = 15 to 0) 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..

SWI5

Bit 5: Software rising edge event trigger on line x (x = 15 to 0) 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..

SWI6

Bit 6: Software rising edge event trigger on line x (x = 15 to 0) 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..

SWI7

Bit 7: Software rising edge event trigger on line x (x = 15 to 0) 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..

SWI8

Bit 8: Software rising edge event trigger on line x (x = 15 to 0) 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..

SWI9

Bit 9: Software rising edge event trigger on line x (x = 15 to 0) 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..

SWI10

Bit 10: Software rising edge event trigger on line x (x = 15 to 0) 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..

SWI11

Bit 11: Software rising edge event trigger on line x (x = 15 to 0) 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..

SWI12

Bit 12: Software rising edge event trigger on line x (x = 15 to 0) 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..

SWI13

Bit 13: Software rising edge event trigger on line x (x = 15 to 0) 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..

SWI14

Bit 14: Software rising edge event trigger on line x (x = 15 to 0) 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..

SWI15

Bit 15: Software rising edge event trigger on line x (x = 15 to 0) 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..

RPR1

EXTI rising edge pending register 1

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

0/16 fields covered.

Toggle fields

RPIF0

Bit 0: Rising edge event pending for configurable line x (x = 15 to 0) 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..

RPIF1

Bit 1: Rising edge event pending for configurable line x (x = 15 to 0) 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..

RPIF2

Bit 2: Rising edge event pending for configurable line x (x = 15 to 0) 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..

RPIF3

Bit 3: Rising edge event pending for configurable line x (x = 15 to 0) 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..

RPIF4

Bit 4: Rising edge event pending for configurable line x (x = 15 to 0) 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..

RPIF5

Bit 5: Rising edge event pending for configurable line x (x = 15 to 0) 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..

RPIF6

Bit 6: Rising edge event pending for configurable line x (x = 15 to 0) 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..

RPIF7

Bit 7: Rising edge event pending for configurable line x (x = 15 to 0) 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..

RPIF8

Bit 8: Rising edge event pending for configurable line x (x = 15 to 0) 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..

RPIF9

Bit 9: Rising edge event pending for configurable line x (x = 15 to 0) 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..

RPIF10

Bit 10: Rising edge event pending for configurable line x (x = 15 to 0) 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..

RPIF11

Bit 11: Rising edge event pending for configurable line x (x = 15 to 0) 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..

RPIF12

Bit 12: Rising edge event pending for configurable line x (x = 15 to 0) 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..

RPIF13

Bit 13: Rising edge event pending for configurable line x (x = 15 to 0) 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..

RPIF14

Bit 14: Rising edge event pending for configurable line x (x = 15 to 0) 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..

RPIF15

Bit 15: Rising edge event pending for configurable line x (x = 15 to 0) 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..

FPR1

EXTI falling edge pending register 1

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

0/16 fields covered.

Toggle fields

FPIF0

Bit 0: Falling edge event pending for configurable line x (x = 15 to 0) 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..

FPIF1

Bit 1: Falling edge event pending for configurable line x (x = 15 to 0) 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..

FPIF2

Bit 2: Falling edge event pending for configurable line x (x = 15 to 0) 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..

FPIF3

Bit 3: Falling edge event pending for configurable line x (x = 15 to 0) 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..

FPIF4

Bit 4: Falling edge event pending for configurable line x (x = 15 to 0) 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..

FPIF5

Bit 5: Falling edge event pending for configurable line x (x = 15 to 0) 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..

FPIF6

Bit 6: Falling edge event pending for configurable line x (x = 15 to 0) 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..

FPIF7

Bit 7: Falling edge event pending for configurable line x (x = 15 to 0) 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..

FPIF8

Bit 8: Falling edge event pending for configurable line x (x = 15 to 0) 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..

FPIF9

Bit 9: Falling edge event pending for configurable line x (x = 15 to 0) 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..

FPIF10

Bit 10: Falling edge event pending for configurable line x (x = 15 to 0) 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..

FPIF11

Bit 11: Falling edge event pending for configurable line x (x = 15 to 0) 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..

FPIF12

Bit 12: Falling edge event pending for configurable line x (x = 15 to 0) 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..

FPIF13

Bit 13: Falling edge event pending for configurable line x (x = 15 to 0) 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..

FPIF14

Bit 14: Falling edge event pending for configurable line x (x = 15 to 0) 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..

FPIF15

Bit 15: Falling edge event pending for configurable line x (x = 15 to 0) 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..

EXTICR1

EXTI external interrupt selection register

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: EXTIm GPIO port selection (m = 4 * (x - 1)) These bits are written by software to select the source input for EXTIm external interrupt. Other: reserved.

EXTI1

Bits 8-15: .

EXTI2

Bits 16-23: .

EXTI3

Bits 24-31: .

EXTICR2

EXTI external interrupt selection register

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
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: EXTIm GPIO port selection (m = 4 * (x - 1)) These bits are written by software to select the source input for EXTIm external interrupt. Other: reserved.

EXTI1

Bits 8-15: .

EXTI2

Bits 16-23: .

EXTI3

Bits 24-31: .

EXTICR3

EXTI external interrupt 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
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: EXTIm GPIO port selection (m = 4 * (x - 1)) These bits are written by software to select the source input for EXTIm external interrupt. Other: reserved.

EXTI1

Bits 8-15: .

EXTI2

Bits 16-23: .

EXTI3

Bits 24-31: .

EXTICR4

EXTI external interrupt selection register

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
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: EXTIm GPIO port selection (m = 4 * (x - 1)) These bits are written by software to select the source input for EXTIm external interrupt. Other: reserved.

EXTI1

Bits 8-15: .

EXTI2

Bits 16-23: .

EXTI3

Bits 24-31: .

IMR1

EXTI CPU wakeup with interrupt mask register

Offset: 0x80, size: 32, reset: 0xFFF80000, access: Unspecified

0/5 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
IM31
rw
IM25
rw
IM23
rw
IM19
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IM
rw
Toggle fields

IM

Bits 0-15: CPU wakeup with interrupt mask.

IM19

Bit 19: IM19.

IM23

Bit 23: IM23.

IM25

Bit 25: IM25.

IM31

Bit 31: IM31.

EMR1

EXTI CPU wakeup with event mask register

Offset: 0x84, 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
EM31
rw
EM25
rw
EM23
rw
EM19
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EM
rw
Toggle fields

EM

Bits 0-15: CPU wakeup with event generation mask.

EM19

Bit 19: EM19.

EM23

Bit 23: EM23.

EM25

Bit 25: EM25.

EM31

Bit 31: EM31.

FLASH

0x40022000: Spider_FLASH register block

2/65 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 ACR
0x8 KEYR
0xc OPTKEYR
0x10 SR
0x14 CR
0x20 OPTR
0x24 PCROP1ASR
0x28 PCROP1AER
0x2c WRP1AR
0x30 WRP1BR
0x34 PCROP1BSR
0x38 PCROP1BER
0x80 SECR
Toggle registers

ACR

FLASH access control register

Offset: 0x0, size: 32, reset: 0x00040600, access: read-write

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 was read as erased or as programmed during OBL. It is not affected by the system reset. Software may need to change this bit value after a flash memory program or erase operation. 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..

KEYR

FLASH key register

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

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.

OPTKEYR

FLASH option key register

Offset: 0xc, size: 32, reset: 0x00000000, access: write-only

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.

SR

FLASH status register

Offset: 0x10, size: 32, reset: 0x00000000, access: read-write

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 Set by hardware when the options and engineering bits read may not be the one configured by the user or production. If options and engineering bits haven't been properly loaded, OPTVERR is set again after each system reset. Option bytes that fail loading are forced to a safe value, see Section4.4.2: FLASH option byte programming. Cleared by writing 1..

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 reset by hardware. For flash program operation, it is set when the first word is sent, and cleared after the second word is sent when the operation completes or ends with an error. For flash erase operation, it is set when setting the STRT bit of the FLASH_CR register and cleared when the operation completes or ends with an error. When set, a programming or erase operation is ongoing and the corresponding settings in the FLASH control register (FLASH_CR) are used (busy) and cannot be changed. Any other flash operation launch must be postponed. When cleared, the programming and erase settings in the FLASH control register (FLASH_CR) can be modified. Note: The CFGBSY bit is also set when attempting to write locked flash memory (with the first byte sent). When the CFGBSY bit is set, writing into the FLASH_CR register causes HardFault.To clear the CFGBSY bit, send a double word to the flash memory and wait until the access is finished (otherwise the CFGBSY bit remains set)..

CR

FLASH control register

Offset: 0x14, size: 32, reset: 0xC0000000, access: read-write

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 3-8: Page number selection These bits select the page to erase: ... Note: Values corresponding to addresses outside the Main memory are not allowed. See Table6 and Table7..

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..

OPTR

FLASH option register

Offset: 0x20, size: 32, reset: 0x00000000, access: read-write

0/19 fields covered.

Toggle fields

RDP

Bits 0-7: Read protection level Other: Level 1, memories read protection active.

BOR_EN

Bit 8: Brown out reset enable.

BORR_LEV

Bits 9-10: BOR threshold at rising V<sub>DD</sub> supply Rising V<sub>DD</sub> crossings this threshold releases the reset signal..

BORF_LEV

Bits 11-12: BOR threshold at falling V<sub>DD</sub> supply Falling V<sub>DD</sub> crossings this threshold activates the reset signal..

NRST_STOP

Bit 13: None.

NRST_STDBY

Bit 14: None.

NRST_SHDW

Bit 15: None.

IWDG_SW

Bit 16: None.

IWDG_STOP

Bit 17: Independent watchdog counter freeze in Stop mode.

IWGD_STDBY

Bit 18: None.

WWDG_SW

Bit 19: Window watchdog selection.

HSE_NOT_REMAPPED

Bit 21: HSE remapping enable/disable When cleared, the bit remaps the HSE clock source from PF0-OSC_IN/PF1-OSC_OUT pins to PC14-OSCX_IN/PC15-OSCX_OUT. Thus PC14-OSCX_IN/PC15-OSCX_OUT are shared by both LSE and HSE and the two clock sources cannot be use simultaneously. On packages with less than 48 pins, the remapping is always enabled (PF0-OSC_IN/PF1-OSC_OUT are not available), regardless of this bit. As all STM32C011xx packages have less than 48 pins, this bit is only applicable to STM32C031xx. Note: On 48 pins packages, when HSE_NOT_REMAPPED is reset, HSE cannot be used in bypass mode. Refer to product errata sheet for more details..

RAM_PARITY_CHECK

Bit 22: SRAM parity check control enable/disable.

SECURE_MUXING_EN

Bit 23: Multiple-bonding security The bit allows enabling automatic I/O configuration to prevent conflicts on I/Os connected (bonded) onto the same pin. If the software sets one of the I/Os connected to the same pin as active by configuring the SYSCFG_CFGR3 register, enabling this bit automatically forces the other I/Os in digital input mode, regardless of their software configuration. When the bit is disabled, the SYSCFG_CFGR3 register setting is ignored, all GPIOs linked to a given pin are active and can be set in the mode specified by the corresponding GPIOx_MODER register. The user software must ensure that there is no conflict between GPIOs..

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 Section3: Boot configuration..

NBOOT0

Bit 26: nBOOT0 option bit.

NRST_MODE

Bits 27-28: NRST pin configuration.

IRHEN

Bit 29: Internal reset holder enable bit.

PCROP1ASR

FLASH PCROP area A start address register

Offset: 0x24, 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
PCROP1A_STRT
rw
Toggle fields

PCROP1A_STRT

Bits 0-7: PCROP1A area start offset Contains the offset of the first subpage of the PCROP1A area. Note: The number of effective bits depends on the size of the flash memory in the device..

PCROP1AER

FLASH PCROP area A end address register

Offset: 0x28, 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
PCROP_RDP
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PCROP1A_END
rw
Toggle fields

PCROP1A_END

Bits 0-7: PCROP1A area end offset Contains the offset of the last subpage of the PCROP1A area. Note: The number of effective bits depends on the size of the flash memory in the device..

PCROP_RDP

Bit 31: PCROP area erase upon RDP level regression This bit determines whether the PCROP area (and the totality of the PCROP area boundary pages) is erased by the mass erase triggered by the RDP level regression from Level 1 to Level 0: The software can only set this bit. It is automatically reset upon mass erase following the RDP regression from Level 1 to Level 0..

WRP1AR

FLASH WRP area A address register

Offset: 0x2c, 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
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 0-5: 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 16-21: 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..

WRP1BR

FLASH WRP area B address register

Offset: 0x30, 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
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 0-5: 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 16-21: 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..

PCROP1BSR

FLASH PCROP area B start address register

Offset: 0x34, 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
PCROP1B_STRT
rw
Toggle fields

PCROP1B_STRT

Bits 0-7: PCROP1B area start offset Contains the offset of the first subpage of the PCROP1B area. Note: The number of effective bits depends on the size of the flash memory in the device..

PCROP1BER

FLASH PCROP area B end address register

Offset: 0x38, 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
PCROP1B_END
rw
Toggle fields

PCROP1B_END

Bits 0-7: PCROP1B area end offset Contains the offset of the last subpage of the PCROP1B area. Note: The number of effective bits depends on the size of the flash memory in the device..

SECR

FLASH security register

Offset: 0x80, 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
BOOT_LOCK
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SEC_SIZE
rw
Toggle fields

SEC_SIZE

Bits 0-7: Securable memory area size Contains the number of securable flash memory pages. Note: The number of effective bits depends on the size of the flash memory in the device..

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)..

GPIOA

0x50000000: GPIOA address block description

177/177 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 MODER
0x4 OTYPER
0x8 OSPEEDR
0xc PUPDR
0x10 IDR
0x14 ODR
0x18 BSRR
0x1c LCKR
0x20 AFRL
0x24 AFRH
0x28 BRR
Toggle registers

MODER

GPIO port mode register

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

16/16 fields covered.

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

MODE[0]

Bits 0-1: Port x configuration pin 0.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[1]

Bits 2-3: Port x configuration pin 1.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[2]

Bits 4-5: Port x configuration pin 2.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[3]

Bits 6-7: Port x configuration pin 3.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[4]

Bits 8-9: Port x configuration pin 4.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[5]

Bits 10-11: Port x configuration pin 5.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[6]

Bits 12-13: Port x configuration pin 6.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[7]

Bits 14-15: Port x configuration pin 7.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[8]

Bits 16-17: Port x configuration pin 8.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[9]

Bits 18-19: Port x configuration pin 9.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[10]

Bits 20-21: Port x configuration pin 10.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[11]

Bits 22-23: Port x configuration pin 11.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[12]

Bits 24-25: Port x configuration pin 12.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[13]

Bits 26-27: Port x configuration pin 13.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[14]

Bits 28-29: Port x configuration pin 14.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[15]

Bits 30-31: Port x configuration pin 15.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

OTYPER

GPIO port output type register

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

16/16 fields covered.

Toggle fields

OT[0]

Bit 0: Port x configuration pin 0.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[1]

Bit 1: Port x configuration pin 1.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[2]

Bit 2: Port x configuration pin 2.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[3]

Bit 3: Port x configuration pin 3.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[4]

Bit 4: Port x configuration pin 4.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[5]

Bit 5: Port x configuration pin 5.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[6]

Bit 6: Port x configuration pin 6.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[7]

Bit 7: Port x configuration pin 7.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[8]

Bit 8: Port x configuration pin 8.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[9]

Bit 9: Port x configuration pin 9.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[10]

Bit 10: Port x configuration pin 10.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[11]

Bit 11: Port x configuration pin 11.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[12]

Bit 12: Port x configuration pin 12.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[13]

Bit 13: Port x configuration pin 13.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[14]

Bit 14: Port x configuration pin 14.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[15]

Bit 15: Port x configuration pin 15.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OSPEEDR

GPIO port output speed register

Offset: 0x8, size: 32, reset: 0x0C000000, access: Unspecified

16/16 fields covered.

Toggle fields

OSPEED[0]

Bits 0-1: Port x configuration pin 0.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[1]

Bits 2-3: Port x configuration pin 1.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[2]

Bits 4-5: Port x configuration pin 2.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[3]

Bits 6-7: Port x configuration pin 3.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[4]

Bits 8-9: Port x configuration pin 4.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[5]

Bits 10-11: Port x configuration pin 5.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[6]

Bits 12-13: Port x configuration pin 6.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[7]

Bits 14-15: Port x configuration pin 7.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[8]

Bits 16-17: Port x configuration pin 8.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[9]

Bits 18-19: Port x configuration pin 9.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[10]

Bits 20-21: Port x configuration pin 10.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[11]

Bits 22-23: Port x configuration pin 11.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[12]

Bits 24-25: Port x configuration pin 12.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[13]

Bits 26-27: Port x configuration pin 13.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[14]

Bits 28-29: Port x configuration pin 14.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[15]

Bits 30-31: Port x configuration pin 15.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

PUPDR

GPIO port pull-up/pull-down register

Offset: 0xc, size: 32, reset: 0x24000000, access: Unspecified

16/16 fields covered.

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

PUPD[0]

Bits 0-1: Port x configuration pin 0.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[1]

Bits 2-3: Port x configuration pin 1.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[2]

Bits 4-5: Port x configuration pin 2.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[3]

Bits 6-7: Port x configuration pin 3.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[4]

Bits 8-9: Port x configuration pin 4.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[5]

Bits 10-11: Port x configuration pin 5.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[6]

Bits 12-13: Port x configuration pin 6.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[7]

Bits 14-15: Port x configuration pin 7.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[8]

Bits 16-17: Port x configuration pin 8.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[9]

Bits 18-19: Port x configuration pin 9.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[10]

Bits 20-21: Port x configuration pin 10.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[11]

Bits 22-23: Port x configuration pin 11.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[12]

Bits 24-25: Port x configuration pin 12.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[13]

Bits 26-27: Port x configuration pin 13.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[14]

Bits 28-29: Port x configuration pin 14.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[15]

Bits 30-31: Port x configuration pin 15.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

IDR

GPIO port input data register

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

16/16 fields covered.

Toggle fields

ID[0]

Bit 0: Port input data pin 0.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[1]

Bit 1: Port input data pin 1.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[2]

Bit 2: Port input data pin 2.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[3]

Bit 3: Port input data pin 3.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[4]

Bit 4: Port input data pin 4.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[5]

Bit 5: Port input data pin 5.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[6]

Bit 6: Port input data pin 6.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[7]

Bit 7: Port input data pin 7.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[8]

Bit 8: Port input data pin 8.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[9]

Bit 9: Port input data pin 9.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[10]

Bit 10: Port input data pin 10.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[11]

Bit 11: Port input data pin 11.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[12]

Bit 12: Port input data pin 12.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[13]

Bit 13: Port input data pin 13.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[14]

Bit 14: Port input data pin 14.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[15]

Bit 15: Port input data pin 15.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ODR

GPIO port output data register

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

16/16 fields covered.

Toggle fields

OD[0]

Bit 0: Port output data pin 0.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[1]

Bit 1: Port output data pin 1.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[2]

Bit 2: Port output data pin 2.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[3]

Bit 3: Port output data pin 3.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[4]

Bit 4: Port output data pin 4.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[5]

Bit 5: Port output data pin 5.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[6]

Bit 6: Port output data pin 6.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[7]

Bit 7: Port output data pin 7.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[8]

Bit 8: Port output data pin 8.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[9]

Bit 9: Port output data pin 9.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[10]

Bit 10: Port output data pin 10.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[11]

Bit 11: Port output data pin 11.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[12]

Bit 12: Port output data pin 12.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[13]

Bit 13: Port output data pin 13.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[14]

Bit 14: Port output data pin 14.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[15]

Bit 15: Port output data pin 15.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

BSRR

GPIO port bit set/reset register

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

32/32 fields covered.

Toggle fields

BS[0]

Bit 0: Port x set pin 0.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[1]

Bit 1: Port x set pin 1.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[2]

Bit 2: Port x set pin 2.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[3]

Bit 3: Port x set pin 3.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[4]

Bit 4: Port x set pin 4.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[5]

Bit 5: Port x set pin 5.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[6]

Bit 6: Port x set pin 6.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[7]

Bit 7: Port x set pin 7.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[8]

Bit 8: Port x set pin 8.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[9]

Bit 9: Port x set pin 9.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[10]

Bit 10: Port x set pin 10.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[11]

Bit 11: Port x set pin 11.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[12]

Bit 12: Port x set pin 12.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[13]

Bit 13: Port x set pin 13.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[14]

Bit 14: Port x set pin 14.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[15]

Bit 15: Port x set pin 15.

Allowed values:
1: Set: Sets the corresponding ODx bit

BR[0]

Bit 16: Port x reset pin 0.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[1]

Bit 17: Port x reset pin 1.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[2]

Bit 18: Port x reset pin 2.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[3]

Bit 19: Port x reset pin 3.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[4]

Bit 20: Port x reset pin 4.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[5]

Bit 21: Port x reset pin 5.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[6]

Bit 22: Port x reset pin 6.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[7]

Bit 23: Port x reset pin 7.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[8]

Bit 24: Port x reset pin 8.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[9]

Bit 25: Port x reset pin 9.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[10]

Bit 26: Port x reset pin 10.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[11]

Bit 27: Port x reset pin 11.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[12]

Bit 28: Port x reset pin 12.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[13]

Bit 29: Port x reset pin 13.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[14]

Bit 30: Port x reset pin 14.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[15]

Bit 31: Port x reset pin 15.

Allowed values:
1: Reset: Resets the corresponding ODx bit

LCKR

GPIO port configuration lock register

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

17/17 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
LCK[15]
rw
LCK[14]
rw
LCK[13]
rw
LCK[12]
rw
LCK[11]
rw
LCK[10]
rw
LCK[9]
rw
LCK[8]
rw
LCK[7]
rw
LCK[6]
rw
LCK[5]
rw
LCK[4]
rw
LCK[3]
rw
LCK[2]
rw
LCK[1]
rw
LCK[0]
rw
Toggle fields

LCK[0]

Bit 0: Port x lock pin 0.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[1]

Bit 1: Port x lock pin 1.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[2]

Bit 2: Port x lock pin 2.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[3]

Bit 3: Port x lock pin 3.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[4]

Bit 4: Port x lock pin 4.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[5]

Bit 5: Port x lock pin 5.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[6]

Bit 6: Port x lock pin 6.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[7]

Bit 7: Port x lock pin 7.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[8]

Bit 8: Port x lock pin 8.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[9]

Bit 9: Port x lock pin 9.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[10]

Bit 10: Port x lock pin 10.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[11]

Bit 11: Port x lock pin 11.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[12]

Bit 12: Port x lock pin 12.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[13]

Bit 13: Port x lock pin 13.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[14]

Bit 14: Port x lock pin 14.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[15]

Bit 15: Port x lock pin 15.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

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. Any error in the lock sequence aborts the lock. 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..

Allowed values:
0: NotActive: Port configuration lock key not active
1: Active: Port configuration lock key active

AFRL

GPIO alternate function low register

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

8/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFR[EL7]
rw
AFR[EL6]
rw
AFR[EL5]
rw
AFR[EL4]
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFR[EL3]
rw
AFR[EL2]
rw
AFR[EL1]
rw
AFR[EL0]
rw
Toggle fields

AFR[EL0]

Bits 0-3: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL1]

Bits 4-7: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL2]

Bits 8-11: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL3]

Bits 12-15: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL4]

Bits 16-19: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL5]

Bits 20-23: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL6]

Bits 24-27: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL7]

Bits 28-31: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFRH

GPIO alternate function high register

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

8/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFR[EL15]
rw
AFR[EL14]
rw
AFR[EL13]
rw
AFR[EL12]
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFR[EL11]
rw
AFR[EL10]
rw
AFR[EL9]
rw
AFR[EL8]
rw
Toggle fields

AFR[EL8]

Bits 0-3: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL9]

Bits 4-7: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL10]

Bits 8-11: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL11]

Bits 12-15: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL12]

Bits 16-19: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL13]

Bits 20-23: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL14]

Bits 24-27: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL15]

Bits 28-31: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

BRR

GPIO port bit reset register

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

16/16 fields covered.

Toggle fields

BR[0]

Bit 0: Port x reset pin 0.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[1]

Bit 1: Port x reset pin 1.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[2]

Bit 2: Port x reset pin 2.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[3]

Bit 3: Port x reset pin 3.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[4]

Bit 4: Port x reset pin 4.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[5]

Bit 5: Port x reset pin 5.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[6]

Bit 6: Port x reset pin 6.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[7]

Bit 7: Port x reset pin 7.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[8]

Bit 8: Port x reset pin 8.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[9]

Bit 9: Port x reset pin 9.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[10]

Bit 10: Port x reset pin 10.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[11]

Bit 11: Port x reset pin 11.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[12]

Bit 12: Port x reset pin 12.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[13]

Bit 13: Port x reset pin 13.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[14]

Bit 14: Port x reset pin 14.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[15]

Bit 15: Port x reset pin 15.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

GPIOB

0x50000400: GPIOB address block description

177/177 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 MODER
0x4 OTYPER
0x8 OSPEEDR
0xc PUPDR
0x10 IDR
0x14 ODR
0x18 BSRR
0x1c LCKR
0x20 AFRL
0x24 AFRH
0x28 BRR
Toggle registers

MODER

GPIO port mode register

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

16/16 fields covered.

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

MODE[0]

Bits 0-1: Port x configuration pin 0.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[1]

Bits 2-3: Port x configuration pin 1.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[2]

Bits 4-5: Port x configuration pin 2.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[3]

Bits 6-7: Port x configuration pin 3.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[4]

Bits 8-9: Port x configuration pin 4.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[5]

Bits 10-11: Port x configuration pin 5.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[6]

Bits 12-13: Port x configuration pin 6.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[7]

Bits 14-15: Port x configuration pin 7.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[8]

Bits 16-17: Port x configuration pin 8.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[9]

Bits 18-19: Port x configuration pin 9.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[10]

Bits 20-21: Port x configuration pin 10.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[11]

Bits 22-23: Port x configuration pin 11.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[12]

Bits 24-25: Port x configuration pin 12.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[13]

Bits 26-27: Port x configuration pin 13.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[14]

Bits 28-29: Port x configuration pin 14.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[15]

Bits 30-31: Port x configuration pin 15.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

OTYPER

GPIO port output type register

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

16/16 fields covered.

Toggle fields

OT[0]

Bit 0: Port x configuration pin 0.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[1]

Bit 1: Port x configuration pin 1.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[2]

Bit 2: Port x configuration pin 2.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[3]

Bit 3: Port x configuration pin 3.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[4]

Bit 4: Port x configuration pin 4.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[5]

Bit 5: Port x configuration pin 5.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[6]

Bit 6: Port x configuration pin 6.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[7]

Bit 7: Port x configuration pin 7.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[8]

Bit 8: Port x configuration pin 8.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[9]

Bit 9: Port x configuration pin 9.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[10]

Bit 10: Port x configuration pin 10.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[11]

Bit 11: Port x configuration pin 11.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[12]

Bit 12: Port x configuration pin 12.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[13]

Bit 13: Port x configuration pin 13.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[14]

Bit 14: Port x configuration pin 14.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[15]

Bit 15: Port x configuration pin 15.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OSPEEDR

GPIO port output speed register

Offset: 0x8, size: 32, reset: 0x0C000000, access: Unspecified

16/16 fields covered.

Toggle fields

OSPEED[0]

Bits 0-1: Port x configuration pin 0.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[1]

Bits 2-3: Port x configuration pin 1.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[2]

Bits 4-5: Port x configuration pin 2.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[3]

Bits 6-7: Port x configuration pin 3.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[4]

Bits 8-9: Port x configuration pin 4.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[5]

Bits 10-11: Port x configuration pin 5.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[6]

Bits 12-13: Port x configuration pin 6.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[7]

Bits 14-15: Port x configuration pin 7.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[8]

Bits 16-17: Port x configuration pin 8.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[9]

Bits 18-19: Port x configuration pin 9.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[10]

Bits 20-21: Port x configuration pin 10.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[11]

Bits 22-23: Port x configuration pin 11.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[12]

Bits 24-25: Port x configuration pin 12.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[13]

Bits 26-27: Port x configuration pin 13.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[14]

Bits 28-29: Port x configuration pin 14.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[15]

Bits 30-31: Port x configuration pin 15.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

PUPDR

GPIO port pull-up/pull-down register

Offset: 0xc, size: 32, reset: 0x24000000, access: Unspecified

16/16 fields covered.

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

PUPD[0]

Bits 0-1: Port x configuration pin 0.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[1]

Bits 2-3: Port x configuration pin 1.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[2]

Bits 4-5: Port x configuration pin 2.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[3]

Bits 6-7: Port x configuration pin 3.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[4]

Bits 8-9: Port x configuration pin 4.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[5]

Bits 10-11: Port x configuration pin 5.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[6]

Bits 12-13: Port x configuration pin 6.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[7]

Bits 14-15: Port x configuration pin 7.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[8]

Bits 16-17: Port x configuration pin 8.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[9]

Bits 18-19: Port x configuration pin 9.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[10]

Bits 20-21: Port x configuration pin 10.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[11]

Bits 22-23: Port x configuration pin 11.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[12]

Bits 24-25: Port x configuration pin 12.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[13]

Bits 26-27: Port x configuration pin 13.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[14]

Bits 28-29: Port x configuration pin 14.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[15]

Bits 30-31: Port x configuration pin 15.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

IDR

GPIO port input data register

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

16/16 fields covered.

Toggle fields

ID[0]

Bit 0: Port input data pin 0.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[1]

Bit 1: Port input data pin 1.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[2]

Bit 2: Port input data pin 2.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[3]

Bit 3: Port input data pin 3.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[4]

Bit 4: Port input data pin 4.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[5]

Bit 5: Port input data pin 5.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[6]

Bit 6: Port input data pin 6.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[7]

Bit 7: Port input data pin 7.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[8]

Bit 8: Port input data pin 8.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[9]

Bit 9: Port input data pin 9.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[10]

Bit 10: Port input data pin 10.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[11]

Bit 11: Port input data pin 11.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[12]

Bit 12: Port input data pin 12.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[13]

Bit 13: Port input data pin 13.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[14]

Bit 14: Port input data pin 14.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[15]

Bit 15: Port input data pin 15.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ODR

GPIO port output data register

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

16/16 fields covered.

Toggle fields

OD[0]

Bit 0: Port output data pin 0.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[1]

Bit 1: Port output data pin 1.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[2]

Bit 2: Port output data pin 2.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[3]

Bit 3: Port output data pin 3.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[4]

Bit 4: Port output data pin 4.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[5]

Bit 5: Port output data pin 5.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[6]

Bit 6: Port output data pin 6.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[7]

Bit 7: Port output data pin 7.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[8]

Bit 8: Port output data pin 8.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[9]

Bit 9: Port output data pin 9.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[10]

Bit 10: Port output data pin 10.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[11]

Bit 11: Port output data pin 11.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[12]

Bit 12: Port output data pin 12.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[13]

Bit 13: Port output data pin 13.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[14]

Bit 14: Port output data pin 14.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[15]

Bit 15: Port output data pin 15.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

BSRR

GPIO port bit set/reset register

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

32/32 fields covered.

Toggle fields

BS[0]

Bit 0: Port x set pin 0.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[1]

Bit 1: Port x set pin 1.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[2]

Bit 2: Port x set pin 2.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[3]

Bit 3: Port x set pin 3.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[4]

Bit 4: Port x set pin 4.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[5]

Bit 5: Port x set pin 5.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[6]

Bit 6: Port x set pin 6.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[7]

Bit 7: Port x set pin 7.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[8]

Bit 8: Port x set pin 8.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[9]

Bit 9: Port x set pin 9.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[10]

Bit 10: Port x set pin 10.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[11]

Bit 11: Port x set pin 11.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[12]

Bit 12: Port x set pin 12.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[13]

Bit 13: Port x set pin 13.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[14]

Bit 14: Port x set pin 14.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[15]

Bit 15: Port x set pin 15.

Allowed values:
1: Set: Sets the corresponding ODx bit

BR[0]

Bit 16: Port x reset pin 0.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[1]

Bit 17: Port x reset pin 1.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[2]

Bit 18: Port x reset pin 2.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[3]

Bit 19: Port x reset pin 3.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[4]

Bit 20: Port x reset pin 4.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[5]

Bit 21: Port x reset pin 5.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[6]

Bit 22: Port x reset pin 6.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[7]

Bit 23: Port x reset pin 7.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[8]

Bit 24: Port x reset pin 8.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[9]

Bit 25: Port x reset pin 9.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[10]

Bit 26: Port x reset pin 10.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[11]

Bit 27: Port x reset pin 11.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[12]

Bit 28: Port x reset pin 12.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[13]

Bit 29: Port x reset pin 13.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[14]

Bit 30: Port x reset pin 14.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[15]

Bit 31: Port x reset pin 15.

Allowed values:
1: Reset: Resets the corresponding ODx bit

LCKR

GPIO port configuration lock register

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

17/17 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
LCK[15]
rw
LCK[14]
rw
LCK[13]
rw
LCK[12]
rw
LCK[11]
rw
LCK[10]
rw
LCK[9]
rw
LCK[8]
rw
LCK[7]
rw
LCK[6]
rw
LCK[5]
rw
LCK[4]
rw
LCK[3]
rw
LCK[2]
rw
LCK[1]
rw
LCK[0]
rw
Toggle fields

LCK[0]

Bit 0: Port x lock pin 0.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[1]

Bit 1: Port x lock pin 1.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[2]

Bit 2: Port x lock pin 2.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[3]

Bit 3: Port x lock pin 3.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[4]

Bit 4: Port x lock pin 4.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[5]

Bit 5: Port x lock pin 5.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[6]

Bit 6: Port x lock pin 6.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[7]

Bit 7: Port x lock pin 7.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[8]

Bit 8: Port x lock pin 8.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[9]

Bit 9: Port x lock pin 9.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[10]

Bit 10: Port x lock pin 10.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[11]

Bit 11: Port x lock pin 11.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[12]

Bit 12: Port x lock pin 12.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[13]

Bit 13: Port x lock pin 13.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[14]

Bit 14: Port x lock pin 14.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[15]

Bit 15: Port x lock pin 15.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

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. Any error in the lock sequence aborts the lock. 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..

Allowed values:
0: NotActive: Port configuration lock key not active
1: Active: Port configuration lock key active

AFRL

GPIO alternate function low register

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

8/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFR[EL7]
rw
AFR[EL6]
rw
AFR[EL5]
rw
AFR[EL4]
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFR[EL3]
rw
AFR[EL2]
rw
AFR[EL1]
rw
AFR[EL0]
rw
Toggle fields

AFR[EL0]

Bits 0-3: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL1]

Bits 4-7: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL2]

Bits 8-11: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL3]

Bits 12-15: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL4]

Bits 16-19: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL5]

Bits 20-23: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL6]

Bits 24-27: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL7]

Bits 28-31: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFRH

GPIO alternate function high register

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

8/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFR[EL15]
rw
AFR[EL14]
rw
AFR[EL13]
rw
AFR[EL12]
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFR[EL11]
rw
AFR[EL10]
rw
AFR[EL9]
rw
AFR[EL8]
rw
Toggle fields

AFR[EL8]

Bits 0-3: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL9]

Bits 4-7: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL10]

Bits 8-11: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL11]

Bits 12-15: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL12]

Bits 16-19: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL13]

Bits 20-23: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL14]

Bits 24-27: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL15]

Bits 28-31: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

BRR

GPIO port bit reset register

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

16/16 fields covered.

Toggle fields

BR[0]

Bit 0: Port x reset pin 0.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[1]

Bit 1: Port x reset pin 1.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[2]

Bit 2: Port x reset pin 2.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[3]

Bit 3: Port x reset pin 3.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[4]

Bit 4: Port x reset pin 4.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[5]

Bit 5: Port x reset pin 5.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[6]

Bit 6: Port x reset pin 6.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[7]

Bit 7: Port x reset pin 7.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[8]

Bit 8: Port x reset pin 8.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[9]

Bit 9: Port x reset pin 9.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[10]

Bit 10: Port x reset pin 10.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[11]

Bit 11: Port x reset pin 11.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[12]

Bit 12: Port x reset pin 12.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[13]

Bit 13: Port x reset pin 13.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[14]

Bit 14: Port x reset pin 14.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[15]

Bit 15: Port x reset pin 15.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

GPIOC

0x50000800: GPIOC address block description

177/177 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 MODER
0x4 OTYPER
0x8 OSPEEDR
0xc PUPDR
0x10 IDR
0x14 ODR
0x18 BSRR
0x1c LCKR
0x20 AFRL
0x24 AFRH
0x28 BRR
Toggle registers

MODER

GPIO port mode register

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

16/16 fields covered.

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

MODE[0]

Bits 0-1: Port x configuration pin 0.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[1]

Bits 2-3: Port x configuration pin 1.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[2]

Bits 4-5: Port x configuration pin 2.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[3]

Bits 6-7: Port x configuration pin 3.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[4]

Bits 8-9: Port x configuration pin 4.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[5]

Bits 10-11: Port x configuration pin 5.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[6]

Bits 12-13: Port x configuration pin 6.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[7]

Bits 14-15: Port x configuration pin 7.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[8]

Bits 16-17: Port x configuration pin 8.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[9]

Bits 18-19: Port x configuration pin 9.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[10]

Bits 20-21: Port x configuration pin 10.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[11]

Bits 22-23: Port x configuration pin 11.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[12]

Bits 24-25: Port x configuration pin 12.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[13]

Bits 26-27: Port x configuration pin 13.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[14]

Bits 28-29: Port x configuration pin 14.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[15]

Bits 30-31: Port x configuration pin 15.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

OTYPER

GPIO port output type register

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

16/16 fields covered.

Toggle fields

OT[0]

Bit 0: Port x configuration pin 0.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[1]

Bit 1: Port x configuration pin 1.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[2]

Bit 2: Port x configuration pin 2.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[3]

Bit 3: Port x configuration pin 3.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[4]

Bit 4: Port x configuration pin 4.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[5]

Bit 5: Port x configuration pin 5.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[6]

Bit 6: Port x configuration pin 6.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[7]

Bit 7: Port x configuration pin 7.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[8]

Bit 8: Port x configuration pin 8.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[9]

Bit 9: Port x configuration pin 9.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[10]

Bit 10: Port x configuration pin 10.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[11]

Bit 11: Port x configuration pin 11.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[12]

Bit 12: Port x configuration pin 12.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[13]

Bit 13: Port x configuration pin 13.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[14]

Bit 14: Port x configuration pin 14.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[15]

Bit 15: Port x configuration pin 15.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OSPEEDR

GPIO port output speed register

Offset: 0x8, size: 32, reset: 0x0C000000, access: Unspecified

16/16 fields covered.

Toggle fields

OSPEED[0]

Bits 0-1: Port x configuration pin 0.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[1]

Bits 2-3: Port x configuration pin 1.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[2]

Bits 4-5: Port x configuration pin 2.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[3]

Bits 6-7: Port x configuration pin 3.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[4]

Bits 8-9: Port x configuration pin 4.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[5]

Bits 10-11: Port x configuration pin 5.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[6]

Bits 12-13: Port x configuration pin 6.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[7]

Bits 14-15: Port x configuration pin 7.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[8]

Bits 16-17: Port x configuration pin 8.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[9]

Bits 18-19: Port x configuration pin 9.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[10]

Bits 20-21: Port x configuration pin 10.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[11]

Bits 22-23: Port x configuration pin 11.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[12]

Bits 24-25: Port x configuration pin 12.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[13]

Bits 26-27: Port x configuration pin 13.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[14]

Bits 28-29: Port x configuration pin 14.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[15]

Bits 30-31: Port x configuration pin 15.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

PUPDR

GPIO port pull-up/pull-down register

Offset: 0xc, size: 32, reset: 0x24000000, access: Unspecified

16/16 fields covered.

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

PUPD[0]

Bits 0-1: Port x configuration pin 0.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[1]

Bits 2-3: Port x configuration pin 1.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[2]

Bits 4-5: Port x configuration pin 2.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[3]

Bits 6-7: Port x configuration pin 3.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[4]

Bits 8-9: Port x configuration pin 4.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[5]

Bits 10-11: Port x configuration pin 5.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[6]

Bits 12-13: Port x configuration pin 6.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[7]

Bits 14-15: Port x configuration pin 7.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[8]

Bits 16-17: Port x configuration pin 8.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[9]

Bits 18-19: Port x configuration pin 9.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[10]

Bits 20-21: Port x configuration pin 10.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[11]

Bits 22-23: Port x configuration pin 11.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[12]

Bits 24-25: Port x configuration pin 12.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[13]

Bits 26-27: Port x configuration pin 13.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[14]

Bits 28-29: Port x configuration pin 14.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[15]

Bits 30-31: Port x configuration pin 15.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

IDR

GPIO port input data register

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

16/16 fields covered.

Toggle fields

ID[0]

Bit 0: Port input data pin 0.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[1]

Bit 1: Port input data pin 1.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[2]

Bit 2: Port input data pin 2.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[3]

Bit 3: Port input data pin 3.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[4]

Bit 4: Port input data pin 4.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[5]

Bit 5: Port input data pin 5.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[6]

Bit 6: Port input data pin 6.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[7]

Bit 7: Port input data pin 7.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[8]

Bit 8: Port input data pin 8.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[9]

Bit 9: Port input data pin 9.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[10]

Bit 10: Port input data pin 10.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[11]

Bit 11: Port input data pin 11.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[12]

Bit 12: Port input data pin 12.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[13]

Bit 13: Port input data pin 13.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[14]

Bit 14: Port input data pin 14.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[15]

Bit 15: Port input data pin 15.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ODR

GPIO port output data register

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

16/16 fields covered.

Toggle fields

OD[0]

Bit 0: Port output data pin 0.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[1]

Bit 1: Port output data pin 1.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[2]

Bit 2: Port output data pin 2.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[3]

Bit 3: Port output data pin 3.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[4]

Bit 4: Port output data pin 4.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[5]

Bit 5: Port output data pin 5.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[6]

Bit 6: Port output data pin 6.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[7]

Bit 7: Port output data pin 7.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[8]

Bit 8: Port output data pin 8.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[9]

Bit 9: Port output data pin 9.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[10]

Bit 10: Port output data pin 10.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[11]

Bit 11: Port output data pin 11.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[12]

Bit 12: Port output data pin 12.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[13]

Bit 13: Port output data pin 13.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[14]

Bit 14: Port output data pin 14.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[15]

Bit 15: Port output data pin 15.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

BSRR

GPIO port bit set/reset register

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

32/32 fields covered.

Toggle fields

BS[0]

Bit 0: Port x set pin 0.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[1]

Bit 1: Port x set pin 1.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[2]

Bit 2: Port x set pin 2.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[3]

Bit 3: Port x set pin 3.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[4]

Bit 4: Port x set pin 4.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[5]

Bit 5: Port x set pin 5.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[6]

Bit 6: Port x set pin 6.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[7]

Bit 7: Port x set pin 7.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[8]

Bit 8: Port x set pin 8.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[9]

Bit 9: Port x set pin 9.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[10]

Bit 10: Port x set pin 10.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[11]

Bit 11: Port x set pin 11.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[12]

Bit 12: Port x set pin 12.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[13]

Bit 13: Port x set pin 13.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[14]

Bit 14: Port x set pin 14.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[15]

Bit 15: Port x set pin 15.

Allowed values:
1: Set: Sets the corresponding ODx bit

BR[0]

Bit 16: Port x reset pin 0.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[1]

Bit 17: Port x reset pin 1.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[2]

Bit 18: Port x reset pin 2.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[3]

Bit 19: Port x reset pin 3.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[4]

Bit 20: Port x reset pin 4.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[5]

Bit 21: Port x reset pin 5.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[6]

Bit 22: Port x reset pin 6.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[7]

Bit 23: Port x reset pin 7.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[8]

Bit 24: Port x reset pin 8.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[9]

Bit 25: Port x reset pin 9.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[10]

Bit 26: Port x reset pin 10.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[11]

Bit 27: Port x reset pin 11.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[12]

Bit 28: Port x reset pin 12.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[13]

Bit 29: Port x reset pin 13.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[14]

Bit 30: Port x reset pin 14.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[15]

Bit 31: Port x reset pin 15.

Allowed values:
1: Reset: Resets the corresponding ODx bit

LCKR

GPIO port configuration lock register

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

17/17 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
LCK[15]
rw
LCK[14]
rw
LCK[13]
rw
LCK[12]
rw
LCK[11]
rw
LCK[10]
rw
LCK[9]
rw
LCK[8]
rw
LCK[7]
rw
LCK[6]
rw
LCK[5]
rw
LCK[4]
rw
LCK[3]
rw
LCK[2]
rw
LCK[1]
rw
LCK[0]
rw
Toggle fields

LCK[0]

Bit 0: Port x lock pin 0.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[1]

Bit 1: Port x lock pin 1.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[2]

Bit 2: Port x lock pin 2.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[3]

Bit 3: Port x lock pin 3.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[4]

Bit 4: Port x lock pin 4.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[5]

Bit 5: Port x lock pin 5.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[6]

Bit 6: Port x lock pin 6.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[7]

Bit 7: Port x lock pin 7.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[8]

Bit 8: Port x lock pin 8.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[9]

Bit 9: Port x lock pin 9.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[10]

Bit 10: Port x lock pin 10.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[11]

Bit 11: Port x lock pin 11.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[12]

Bit 12: Port x lock pin 12.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[13]

Bit 13: Port x lock pin 13.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[14]

Bit 14: Port x lock pin 14.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[15]

Bit 15: Port x lock pin 15.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

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. Any error in the lock sequence aborts the lock. 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..

Allowed values:
0: NotActive: Port configuration lock key not active
1: Active: Port configuration lock key active

AFRL

GPIO alternate function low register

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

8/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFR[EL7]
rw
AFR[EL6]
rw
AFR[EL5]
rw
AFR[EL4]
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFR[EL3]
rw
AFR[EL2]
rw
AFR[EL1]
rw
AFR[EL0]
rw
Toggle fields

AFR[EL0]

Bits 0-3: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL1]

Bits 4-7: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL2]

Bits 8-11: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL3]

Bits 12-15: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL4]

Bits 16-19: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL5]

Bits 20-23: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL6]

Bits 24-27: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL7]

Bits 28-31: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFRH

GPIO alternate function high register

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

8/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFR[EL15]
rw
AFR[EL14]
rw
AFR[EL13]
rw
AFR[EL12]
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFR[EL11]
rw
AFR[EL10]
rw
AFR[EL9]
rw
AFR[EL8]
rw
Toggle fields

AFR[EL8]

Bits 0-3: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL9]

Bits 4-7: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL10]

Bits 8-11: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL11]

Bits 12-15: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL12]

Bits 16-19: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL13]

Bits 20-23: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL14]

Bits 24-27: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL15]

Bits 28-31: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

BRR

GPIO port bit reset register

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

16/16 fields covered.

Toggle fields

BR[0]

Bit 0: Port x reset pin 0.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[1]

Bit 1: Port x reset pin 1.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[2]

Bit 2: Port x reset pin 2.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[3]

Bit 3: Port x reset pin 3.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[4]

Bit 4: Port x reset pin 4.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[5]

Bit 5: Port x reset pin 5.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[6]

Bit 6: Port x reset pin 6.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[7]

Bit 7: Port x reset pin 7.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[8]

Bit 8: Port x reset pin 8.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[9]

Bit 9: Port x reset pin 9.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[10]

Bit 10: Port x reset pin 10.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[11]

Bit 11: Port x reset pin 11.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[12]

Bit 12: Port x reset pin 12.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[13]

Bit 13: Port x reset pin 13.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[14]

Bit 14: Port x reset pin 14.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[15]

Bit 15: Port x reset pin 15.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

GPIOD

0x50000c00: GPIOD address block description

177/177 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 MODER
0x4 OTYPER
0x8 OSPEEDR
0xc PUPDR
0x10 IDR
0x14 ODR
0x18 BSRR
0x1c LCKR
0x20 AFRL
0x24 AFRH
0x28 BRR
Toggle registers

MODER

GPIO port mode register

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

16/16 fields covered.

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

MODE[0]

Bits 0-1: Port x configuration pin 0.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[1]

Bits 2-3: Port x configuration pin 1.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[2]

Bits 4-5: Port x configuration pin 2.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[3]

Bits 6-7: Port x configuration pin 3.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[4]

Bits 8-9: Port x configuration pin 4.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[5]

Bits 10-11: Port x configuration pin 5.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[6]

Bits 12-13: Port x configuration pin 6.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[7]

Bits 14-15: Port x configuration pin 7.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[8]

Bits 16-17: Port x configuration pin 8.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[9]

Bits 18-19: Port x configuration pin 9.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[10]

Bits 20-21: Port x configuration pin 10.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[11]

Bits 22-23: Port x configuration pin 11.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[12]

Bits 24-25: Port x configuration pin 12.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[13]

Bits 26-27: Port x configuration pin 13.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[14]

Bits 28-29: Port x configuration pin 14.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[15]

Bits 30-31: Port x configuration pin 15.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

OTYPER

GPIO port output type register

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

16/16 fields covered.

Toggle fields

OT[0]

Bit 0: Port x configuration pin 0.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[1]

Bit 1: Port x configuration pin 1.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[2]

Bit 2: Port x configuration pin 2.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[3]

Bit 3: Port x configuration pin 3.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[4]

Bit 4: Port x configuration pin 4.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[5]

Bit 5: Port x configuration pin 5.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[6]

Bit 6: Port x configuration pin 6.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[7]

Bit 7: Port x configuration pin 7.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[8]

Bit 8: Port x configuration pin 8.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[9]

Bit 9: Port x configuration pin 9.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[10]

Bit 10: Port x configuration pin 10.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[11]

Bit 11: Port x configuration pin 11.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[12]

Bit 12: Port x configuration pin 12.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[13]

Bit 13: Port x configuration pin 13.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[14]

Bit 14: Port x configuration pin 14.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[15]

Bit 15: Port x configuration pin 15.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OSPEEDR

GPIO port output speed register

Offset: 0x8, size: 32, reset: 0x0C000000, access: Unspecified

16/16 fields covered.

Toggle fields

OSPEED[0]

Bits 0-1: Port x configuration pin 0.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[1]

Bits 2-3: Port x configuration pin 1.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[2]

Bits 4-5: Port x configuration pin 2.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[3]

Bits 6-7: Port x configuration pin 3.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[4]

Bits 8-9: Port x configuration pin 4.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[5]

Bits 10-11: Port x configuration pin 5.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[6]

Bits 12-13: Port x configuration pin 6.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[7]

Bits 14-15: Port x configuration pin 7.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[8]

Bits 16-17: Port x configuration pin 8.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[9]

Bits 18-19: Port x configuration pin 9.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[10]

Bits 20-21: Port x configuration pin 10.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[11]

Bits 22-23: Port x configuration pin 11.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[12]

Bits 24-25: Port x configuration pin 12.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[13]

Bits 26-27: Port x configuration pin 13.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[14]

Bits 28-29: Port x configuration pin 14.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[15]

Bits 30-31: Port x configuration pin 15.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

PUPDR

GPIO port pull-up/pull-down register

Offset: 0xc, size: 32, reset: 0x24000000, access: Unspecified

16/16 fields covered.

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

PUPD[0]

Bits 0-1: Port x configuration pin 0.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[1]

Bits 2-3: Port x configuration pin 1.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[2]

Bits 4-5: Port x configuration pin 2.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[3]

Bits 6-7: Port x configuration pin 3.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[4]

Bits 8-9: Port x configuration pin 4.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[5]

Bits 10-11: Port x configuration pin 5.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[6]

Bits 12-13: Port x configuration pin 6.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[7]

Bits 14-15: Port x configuration pin 7.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[8]

Bits 16-17: Port x configuration pin 8.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[9]

Bits 18-19: Port x configuration pin 9.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[10]

Bits 20-21: Port x configuration pin 10.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[11]

Bits 22-23: Port x configuration pin 11.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[12]

Bits 24-25: Port x configuration pin 12.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[13]

Bits 26-27: Port x configuration pin 13.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[14]

Bits 28-29: Port x configuration pin 14.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[15]

Bits 30-31: Port x configuration pin 15.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

IDR

GPIO port input data register

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

16/16 fields covered.

Toggle fields

ID[0]

Bit 0: Port input data pin 0.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[1]

Bit 1: Port input data pin 1.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[2]

Bit 2: Port input data pin 2.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[3]

Bit 3: Port input data pin 3.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[4]

Bit 4: Port input data pin 4.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[5]

Bit 5: Port input data pin 5.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[6]

Bit 6: Port input data pin 6.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[7]

Bit 7: Port input data pin 7.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[8]

Bit 8: Port input data pin 8.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[9]

Bit 9: Port input data pin 9.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[10]

Bit 10: Port input data pin 10.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[11]

Bit 11: Port input data pin 11.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[12]

Bit 12: Port input data pin 12.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[13]

Bit 13: Port input data pin 13.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[14]

Bit 14: Port input data pin 14.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[15]

Bit 15: Port input data pin 15.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ODR

GPIO port output data register

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

16/16 fields covered.

Toggle fields

OD[0]

Bit 0: Port output data pin 0.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[1]

Bit 1: Port output data pin 1.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[2]

Bit 2: Port output data pin 2.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[3]

Bit 3: Port output data pin 3.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[4]

Bit 4: Port output data pin 4.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[5]

Bit 5: Port output data pin 5.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[6]

Bit 6: Port output data pin 6.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[7]

Bit 7: Port output data pin 7.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[8]

Bit 8: Port output data pin 8.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[9]

Bit 9: Port output data pin 9.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[10]

Bit 10: Port output data pin 10.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[11]

Bit 11: Port output data pin 11.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[12]

Bit 12: Port output data pin 12.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[13]

Bit 13: Port output data pin 13.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[14]

Bit 14: Port output data pin 14.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[15]

Bit 15: Port output data pin 15.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

BSRR

GPIO port bit set/reset register

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

32/32 fields covered.

Toggle fields

BS[0]

Bit 0: Port x set pin 0.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[1]

Bit 1: Port x set pin 1.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[2]

Bit 2: Port x set pin 2.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[3]

Bit 3: Port x set pin 3.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[4]

Bit 4: Port x set pin 4.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[5]

Bit 5: Port x set pin 5.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[6]

Bit 6: Port x set pin 6.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[7]

Bit 7: Port x set pin 7.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[8]

Bit 8: Port x set pin 8.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[9]

Bit 9: Port x set pin 9.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[10]

Bit 10: Port x set pin 10.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[11]

Bit 11: Port x set pin 11.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[12]

Bit 12: Port x set pin 12.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[13]

Bit 13: Port x set pin 13.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[14]

Bit 14: Port x set pin 14.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[15]

Bit 15: Port x set pin 15.

Allowed values:
1: Set: Sets the corresponding ODx bit

BR[0]

Bit 16: Port x reset pin 0.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[1]

Bit 17: Port x reset pin 1.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[2]

Bit 18: Port x reset pin 2.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[3]

Bit 19: Port x reset pin 3.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[4]

Bit 20: Port x reset pin 4.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[5]

Bit 21: Port x reset pin 5.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[6]

Bit 22: Port x reset pin 6.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[7]

Bit 23: Port x reset pin 7.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[8]

Bit 24: Port x reset pin 8.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[9]

Bit 25: Port x reset pin 9.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[10]

Bit 26: Port x reset pin 10.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[11]

Bit 27: Port x reset pin 11.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[12]

Bit 28: Port x reset pin 12.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[13]

Bit 29: Port x reset pin 13.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[14]

Bit 30: Port x reset pin 14.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[15]

Bit 31: Port x reset pin 15.

Allowed values:
1: Reset: Resets the corresponding ODx bit

LCKR

GPIO port configuration lock register

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

17/17 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
LCK[15]
rw
LCK[14]
rw
LCK[13]
rw
LCK[12]
rw
LCK[11]
rw
LCK[10]
rw
LCK[9]
rw
LCK[8]
rw
LCK[7]
rw
LCK[6]
rw
LCK[5]
rw
LCK[4]
rw
LCK[3]
rw
LCK[2]
rw
LCK[1]
rw
LCK[0]
rw
Toggle fields

LCK[0]

Bit 0: Port x lock pin 0.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[1]

Bit 1: Port x lock pin 1.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[2]

Bit 2: Port x lock pin 2.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[3]

Bit 3: Port x lock pin 3.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[4]

Bit 4: Port x lock pin 4.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[5]

Bit 5: Port x lock pin 5.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[6]

Bit 6: Port x lock pin 6.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[7]

Bit 7: Port x lock pin 7.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[8]

Bit 8: Port x lock pin 8.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[9]

Bit 9: Port x lock pin 9.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[10]

Bit 10: Port x lock pin 10.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[11]

Bit 11: Port x lock pin 11.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[12]

Bit 12: Port x lock pin 12.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[13]

Bit 13: Port x lock pin 13.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[14]

Bit 14: Port x lock pin 14.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[15]

Bit 15: Port x lock pin 15.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

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. Any error in the lock sequence aborts the lock. 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..

Allowed values:
0: NotActive: Port configuration lock key not active
1: Active: Port configuration lock key active

AFRL

GPIO alternate function low register

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

8/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFR[EL7]
rw
AFR[EL6]
rw
AFR[EL5]
rw
AFR[EL4]
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFR[EL3]
rw
AFR[EL2]
rw
AFR[EL1]
rw
AFR[EL0]
rw
Toggle fields

AFR[EL0]

Bits 0-3: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL1]

Bits 4-7: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL2]

Bits 8-11: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL3]

Bits 12-15: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL4]

Bits 16-19: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL5]

Bits 20-23: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL6]

Bits 24-27: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL7]

Bits 28-31: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFRH

GPIO alternate function high register

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

8/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFR[EL15]
rw
AFR[EL14]
rw
AFR[EL13]
rw
AFR[EL12]
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFR[EL11]
rw
AFR[EL10]
rw
AFR[EL9]
rw
AFR[EL8]
rw
Toggle fields

AFR[EL8]

Bits 0-3: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL9]

Bits 4-7: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL10]

Bits 8-11: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL11]

Bits 12-15: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL12]

Bits 16-19: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL13]

Bits 20-23: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL14]

Bits 24-27: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL15]

Bits 28-31: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

BRR

GPIO port bit reset register

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

16/16 fields covered.

Toggle fields

BR[0]

Bit 0: Port x reset pin 0.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[1]

Bit 1: Port x reset pin 1.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[2]

Bit 2: Port x reset pin 2.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[3]

Bit 3: Port x reset pin 3.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[4]

Bit 4: Port x reset pin 4.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[5]

Bit 5: Port x reset pin 5.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[6]

Bit 6: Port x reset pin 6.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[7]

Bit 7: Port x reset pin 7.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[8]

Bit 8: Port x reset pin 8.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[9]

Bit 9: Port x reset pin 9.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[10]

Bit 10: Port x reset pin 10.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[11]

Bit 11: Port x reset pin 11.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[12]

Bit 12: Port x reset pin 12.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[13]

Bit 13: Port x reset pin 13.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[14]

Bit 14: Port x reset pin 14.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[15]

Bit 15: Port x reset pin 15.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

GPIOF

0x50001400: GPIOF address block description

177/177 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 MODER
0x4 OTYPER
0x8 OSPEEDR
0xc PUPDR
0x10 IDR
0x14 ODR
0x18 BSRR
0x1c LCKR
0x20 AFRL
0x24 AFRH
0x28 BRR
Toggle registers

MODER

GPIO port mode register

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

16/16 fields covered.

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

MODE[0]

Bits 0-1: Port x configuration pin 0.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[1]

Bits 2-3: Port x configuration pin 1.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[2]

Bits 4-5: Port x configuration pin 2.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[3]

Bits 6-7: Port x configuration pin 3.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[4]

Bits 8-9: Port x configuration pin 4.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[5]

Bits 10-11: Port x configuration pin 5.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[6]

Bits 12-13: Port x configuration pin 6.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[7]

Bits 14-15: Port x configuration pin 7.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[8]

Bits 16-17: Port x configuration pin 8.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[9]

Bits 18-19: Port x configuration pin 9.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[10]

Bits 20-21: Port x configuration pin 10.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[11]

Bits 22-23: Port x configuration pin 11.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[12]

Bits 24-25: Port x configuration pin 12.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[13]

Bits 26-27: Port x configuration pin 13.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[14]

Bits 28-29: Port x configuration pin 14.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

MODE[15]

Bits 30-31: Port x configuration pin 15.

Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode

OTYPER

GPIO port output type register

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

16/16 fields covered.

Toggle fields

OT[0]

Bit 0: Port x configuration pin 0.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[1]

Bit 1: Port x configuration pin 1.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[2]

Bit 2: Port x configuration pin 2.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[3]

Bit 3: Port x configuration pin 3.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[4]

Bit 4: Port x configuration pin 4.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[5]

Bit 5: Port x configuration pin 5.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[6]

Bit 6: Port x configuration pin 6.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[7]

Bit 7: Port x configuration pin 7.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[8]

Bit 8: Port x configuration pin 8.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[9]

Bit 9: Port x configuration pin 9.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[10]

Bit 10: Port x configuration pin 10.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[11]

Bit 11: Port x configuration pin 11.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[12]

Bit 12: Port x configuration pin 12.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[13]

Bit 13: Port x configuration pin 13.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[14]

Bit 14: Port x configuration pin 14.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OT[15]

Bit 15: Port x configuration pin 15.

Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain

OSPEEDR

GPIO port output speed register

Offset: 0x8, size: 32, reset: 0x0C000000, access: Unspecified

16/16 fields covered.

Toggle fields

OSPEED[0]

Bits 0-1: Port x configuration pin 0.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[1]

Bits 2-3: Port x configuration pin 1.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[2]

Bits 4-5: Port x configuration pin 2.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[3]

Bits 6-7: Port x configuration pin 3.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[4]

Bits 8-9: Port x configuration pin 4.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[5]

Bits 10-11: Port x configuration pin 5.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[6]

Bits 12-13: Port x configuration pin 6.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[7]

Bits 14-15: Port x configuration pin 7.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[8]

Bits 16-17: Port x configuration pin 8.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[9]

Bits 18-19: Port x configuration pin 9.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[10]

Bits 20-21: Port x configuration pin 10.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[11]

Bits 22-23: Port x configuration pin 11.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[12]

Bits 24-25: Port x configuration pin 12.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[13]

Bits 26-27: Port x configuration pin 13.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[14]

Bits 28-29: Port x configuration pin 14.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

OSPEED[15]

Bits 30-31: Port x configuration pin 15.

Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed

PUPDR

GPIO port pull-up/pull-down register

Offset: 0xc, size: 32, reset: 0x24000000, access: Unspecified

16/16 fields covered.

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

PUPD[0]

Bits 0-1: Port x configuration pin 0.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[1]

Bits 2-3: Port x configuration pin 1.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[2]

Bits 4-5: Port x configuration pin 2.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[3]

Bits 6-7: Port x configuration pin 3.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[4]

Bits 8-9: Port x configuration pin 4.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[5]

Bits 10-11: Port x configuration pin 5.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[6]

Bits 12-13: Port x configuration pin 6.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[7]

Bits 14-15: Port x configuration pin 7.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[8]

Bits 16-17: Port x configuration pin 8.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[9]

Bits 18-19: Port x configuration pin 9.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[10]

Bits 20-21: Port x configuration pin 10.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[11]

Bits 22-23: Port x configuration pin 11.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[12]

Bits 24-25: Port x configuration pin 12.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[13]

Bits 26-27: Port x configuration pin 13.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[14]

Bits 28-29: Port x configuration pin 14.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

PUPD[15]

Bits 30-31: Port x configuration pin 15.

Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down

IDR

GPIO port input data register

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

16/16 fields covered.

Toggle fields

ID[0]

Bit 0: Port input data pin 0.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[1]

Bit 1: Port input data pin 1.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[2]

Bit 2: Port input data pin 2.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[3]

Bit 3: Port input data pin 3.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[4]

Bit 4: Port input data pin 4.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[5]

Bit 5: Port input data pin 5.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[6]

Bit 6: Port input data pin 6.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[7]

Bit 7: Port input data pin 7.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[8]

Bit 8: Port input data pin 8.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[9]

Bit 9: Port input data pin 9.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[10]

Bit 10: Port input data pin 10.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[11]

Bit 11: Port input data pin 11.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[12]

Bit 12: Port input data pin 12.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[13]

Bit 13: Port input data pin 13.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[14]

Bit 14: Port input data pin 14.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ID[15]

Bit 15: Port input data pin 15.

Allowed values:
0: Low: Input is logic low
1: High: Input is logic high

ODR

GPIO port output data register

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

16/16 fields covered.

Toggle fields

OD[0]

Bit 0: Port output data pin 0.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[1]

Bit 1: Port output data pin 1.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[2]

Bit 2: Port output data pin 2.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[3]

Bit 3: Port output data pin 3.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[4]

Bit 4: Port output data pin 4.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[5]

Bit 5: Port output data pin 5.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[6]

Bit 6: Port output data pin 6.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[7]

Bit 7: Port output data pin 7.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[8]

Bit 8: Port output data pin 8.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[9]

Bit 9: Port output data pin 9.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[10]

Bit 10: Port output data pin 10.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[11]

Bit 11: Port output data pin 11.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[12]

Bit 12: Port output data pin 12.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[13]

Bit 13: Port output data pin 13.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[14]

Bit 14: Port output data pin 14.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

OD[15]

Bit 15: Port output data pin 15.

Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high

BSRR

GPIO port bit set/reset register

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

32/32 fields covered.

Toggle fields

BS[0]

Bit 0: Port x set pin 0.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[1]

Bit 1: Port x set pin 1.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[2]

Bit 2: Port x set pin 2.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[3]

Bit 3: Port x set pin 3.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[4]

Bit 4: Port x set pin 4.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[5]

Bit 5: Port x set pin 5.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[6]

Bit 6: Port x set pin 6.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[7]

Bit 7: Port x set pin 7.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[8]

Bit 8: Port x set pin 8.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[9]

Bit 9: Port x set pin 9.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[10]

Bit 10: Port x set pin 10.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[11]

Bit 11: Port x set pin 11.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[12]

Bit 12: Port x set pin 12.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[13]

Bit 13: Port x set pin 13.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[14]

Bit 14: Port x set pin 14.

Allowed values:
1: Set: Sets the corresponding ODx bit

BS[15]

Bit 15: Port x set pin 15.

Allowed values:
1: Set: Sets the corresponding ODx bit

BR[0]

Bit 16: Port x reset pin 0.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[1]

Bit 17: Port x reset pin 1.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[2]

Bit 18: Port x reset pin 2.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[3]

Bit 19: Port x reset pin 3.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[4]

Bit 20: Port x reset pin 4.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[5]

Bit 21: Port x reset pin 5.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[6]

Bit 22: Port x reset pin 6.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[7]

Bit 23: Port x reset pin 7.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[8]

Bit 24: Port x reset pin 8.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[9]

Bit 25: Port x reset pin 9.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[10]

Bit 26: Port x reset pin 10.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[11]

Bit 27: Port x reset pin 11.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[12]

Bit 28: Port x reset pin 12.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[13]

Bit 29: Port x reset pin 13.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[14]

Bit 30: Port x reset pin 14.

Allowed values:
1: Reset: Resets the corresponding ODx bit

BR[15]

Bit 31: Port x reset pin 15.

Allowed values:
1: Reset: Resets the corresponding ODx bit

LCKR

GPIO port configuration lock register

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

17/17 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
LCK[15]
rw
LCK[14]
rw
LCK[13]
rw
LCK[12]
rw
LCK[11]
rw
LCK[10]
rw
LCK[9]
rw
LCK[8]
rw
LCK[7]
rw
LCK[6]
rw
LCK[5]
rw
LCK[4]
rw
LCK[3]
rw
LCK[2]
rw
LCK[1]
rw
LCK[0]
rw
Toggle fields

LCK[0]

Bit 0: Port x lock pin 0.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[1]

Bit 1: Port x lock pin 1.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[2]

Bit 2: Port x lock pin 2.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[3]

Bit 3: Port x lock pin 3.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[4]

Bit 4: Port x lock pin 4.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[5]

Bit 5: Port x lock pin 5.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[6]

Bit 6: Port x lock pin 6.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[7]

Bit 7: Port x lock pin 7.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[8]

Bit 8: Port x lock pin 8.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[9]

Bit 9: Port x lock pin 9.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[10]

Bit 10: Port x lock pin 10.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[11]

Bit 11: Port x lock pin 11.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[12]

Bit 12: Port x lock pin 12.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[13]

Bit 13: Port x lock pin 13.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[14]

Bit 14: Port x lock pin 14.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

LCK[15]

Bit 15: Port x lock pin 15.

Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked

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. Any error in the lock sequence aborts the lock. 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..

Allowed values:
0: NotActive: Port configuration lock key not active
1: Active: Port configuration lock key active

AFRL

GPIO alternate function low register

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

8/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFR[EL7]
rw
AFR[EL6]
rw
AFR[EL5]
rw
AFR[EL4]
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFR[EL3]
rw
AFR[EL2]
rw
AFR[EL1]
rw
AFR[EL0]
rw
Toggle fields

AFR[EL0]

Bits 0-3: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL1]

Bits 4-7: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL2]

Bits 8-11: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL3]

Bits 12-15: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL4]

Bits 16-19: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL5]

Bits 20-23: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL6]

Bits 24-27: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL7]

Bits 28-31: Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFRH

GPIO alternate function high register

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

8/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
AFR[EL15]
rw
AFR[EL14]
rw
AFR[EL13]
rw
AFR[EL12]
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
AFR[EL11]
rw
AFR[EL10]
rw
AFR[EL9]
rw
AFR[EL8]
rw
Toggle fields

AFR[EL8]

Bits 0-3: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL9]

Bits 4-7: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL10]

Bits 8-11: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL11]

Bits 12-15: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL12]

Bits 16-19: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL13]

Bits 20-23: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL14]

Bits 24-27: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

AFR[EL15]

Bits 28-31: Alternate function selection for port x, I/O y (y = 8 to 15) These bits are written by software to configure alternate function I/Os.

Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
8: AF8: AF8
9: AF9: AF9
10: AF10: AF10
11: AF11: AF11
12: AF12: AF12
13: AF13: AF13
14: AF14: AF14
15: AF15: AF15

BRR

GPIO port bit reset register

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

16/16 fields covered.

Toggle fields

BR[0]

Bit 0: Port x reset pin 0.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[1]

Bit 1: Port x reset pin 1.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[2]

Bit 2: Port x reset pin 2.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[3]

Bit 3: Port x reset pin 3.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[4]

Bit 4: Port x reset pin 4.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[5]

Bit 5: Port x reset pin 5.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[6]

Bit 6: Port x reset pin 6.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[7]

Bit 7: Port x reset pin 7.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[8]

Bit 8: Port x reset pin 8.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[9]

Bit 9: Port x reset pin 9.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[10]

Bit 10: Port x reset pin 10.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[11]

Bit 11: Port x reset pin 11.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[12]

Bit 12: Port x reset pin 12.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[13]

Bit 13: Port x reset pin 13.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[14]

Bit 14: Port x reset pin 14.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

BR[15]

Bit 15: Port x reset pin 15.

Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit

I2C1

0x40005400: I2C register block

76/76 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 CR1
0x4 CR2
0x8 OAR1
0xc OAR2
0x10 TIMINGR
0x14 TIMEOUTR
0x18 ISR
0x1c ICR
0x20 PECR
0x24 RXDR
0x28 TXDR
Toggle registers

CR1

I2C control register 1

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

20/20 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PECEN
rw
ALERTEN
rw
SMBDEN
rw
SMBHEN
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 3 APB clock cycles..

Allowed values:
0: Disabled: Peripheral disabled
1: Enabled: Peripheral enabled

TXIE

Bit 1: TX Interrupt enable.

Allowed values:
0: Disabled: Transmit (TXIS) interrupt disabled
1: Enabled: Transmit (TXIS) interrupt enabled

RXIE

Bit 2: RX Interrupt enable.

Allowed values:
0: Disabled: Receive (RXNE) interrupt disabled
1: Enabled: Receive (RXNE) interrupt enabled

ADDRIE

Bit 3: Address match Interrupt enable (slave only).

Allowed values:
0: Disabled: Address match (ADDR) interrupts disabled
1: Enabled: Address match (ADDR) interrupts enabled

NACKIE

Bit 4: Not acknowledge received Interrupt enable.

Allowed values:
0: Disabled: Not acknowledge (NACKF) received interrupts disabled
1: Enabled: Not acknowledge (NACKF) received interrupts enabled

STOPIE

Bit 5: Stop detection Interrupt enable.

Allowed values:
0: Disabled: Stop detection (STOPF) interrupt disabled
1: Enabled: Stop detection (STOPF) interrupt enabled

TCIE

Bit 6: Transfer Complete interrupt enable Note: Any of these events generate an interrupt: Transfer Complete (TC) Transfer Complete Reload (TCR).

Allowed values:
0: Disabled: Transfer Complete interrupt disabled
1: Enabled: Transfer Complete interrupt enabled

ERRIE

Bit 7: Error interrupts enable Note: Any of these errors generate an interrupt: Arbitration Loss (ARLO) Bus Error detection (BERR) Overrun/Underrun (OVR) Timeout detection (TIMEOUT) PEC error detection (PECERR) Alert pin event detection (ALERT).

Allowed values:
0: Disabled: Error detection interrupts disabled
1: Enabled: Error detection interrupts enabled

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] * tI2CCLK ... Note: If the analog filter is also enabled, the digital filter is added to the analog filter. This filter can only be programmed when the I2C is disabled (PE = 0)..

Allowed values:
0: NoFilter: Digital filter disabled
1: Filter1: Digital filter enabled and filtering capability up to 1 tI2CCLK
2: Filter2: Digital filter enabled and filtering capability up to 2 tI2CCLK
3: Filter3: Digital filter enabled and filtering capability up to 3 tI2CCLK
4: Filter4: Digital filter enabled and filtering capability up to 4 tI2CCLK
5: Filter5: Digital filter enabled and filtering capability up to 5 tI2CCLK
6: Filter6: Digital filter enabled and filtering capability up to 6 tI2CCLK
7: Filter7: Digital filter enabled and filtering capability up to 7 tI2CCLK
8: Filter8: Digital filter enabled and filtering capability up to 8 tI2CCLK
9: Filter9: Digital filter enabled and filtering capability up to 9 tI2CCLK
10: Filter10: Digital filter enabled and filtering capability up to 10 tI2CCLK
11: Filter11: Digital filter enabled and filtering capability up to 11 tI2CCLK
12: Filter12: Digital filter enabled and filtering capability up to 12 tI2CCLK
13: Filter13: Digital filter enabled and filtering capability up to 13 tI2CCLK
14: Filter14: Digital filter enabled and filtering capability up to 14 tI2CCLK
15: Filter15: Digital filter enabled and filtering capability up to 15 tI2CCLK

ANFOFF

Bit 12: Analog noise filter OFF Note: This bit can only be programmed when the I2C is disabled (PE = 0)..

Allowed values:
0: Enabled: Analog noise filter enabled
1: Disabled: Analog noise filter disabled

TXDMAEN

Bit 14: DMA transmission requests enable.

Allowed values:
0: Disabled: DMA mode disabled for transmission
1: Enabled: DMA mode enabled for transmission

RXDMAEN

Bit 15: DMA reception requests enable.

Allowed values:
0: Disabled: DMA mode disabled for reception
1: Enabled: DMA mode enabled for reception

SBC

Bit 16: Slave byte control This bit is used to enable hardware byte control in slave mode..

Allowed values:
0: Disabled: Slave byte control disabled
1: Enabled: Slave byte control enabled

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 only be programmed when the I2C is disabled (PE = 0)..

Allowed values:
0: Enabled: Clock stretching enabled
1: Disabled: Clock stretching disabled

WUPEN

Bit 18: Wakeup from Stop mode enable Note: If the Wakeup from Stop mode feature is not supported, this bit is reserved and forced by hardware to 0. Refer to . Note: WUPEN can be set only when DNF = 0000.

Allowed values:
0: Disabled: Wakeup from Stop mode disabled
1: Enabled: Wakeup from Stop mode enabled

GCEN

Bit 19: General call enable.

Allowed values:
0: Disabled: General call disabled. Address 0b00000000 is NACKed
1: Enabled: General call enabled. Address 0b00000000 is ACKed

SMBHEN

Bit 20: SMBus host address enable Note: If the SMBus feature is not supported, this bit is reserved and forced by hardware to 0. Refer to ..

Allowed values:
0: Disabled: Host address disabled. Address 0b0001000x is NACKed
1: Enabled: Host address enabled. Address 0b0001000x is ACKed

SMBDEN

Bit 21: SMBus device default address enable Note: If the SMBus feature is not supported, this bit is reserved and forced by hardware to 0. Refer to ..

Allowed values:
0: Disabled: Device default address disabled. Address 0b1100001x is NACKed
1: Enabled: Device default address enabled. Address 0b1100001x is ACKed

ALERTEN

Bit 22: SMBus alert enable Note: When ALERTEN=0, the SMBA pin can be used as a standard GPIO. If the SMBus feature is not supported, this bit is reserved and forced by hardware to 0. Refer to ..

Allowed values:
0: Disabled: In device mode (SMBHEN=Disabled) Releases SMBA pin high and Alert Response Address Header disabled (0001100x) followed by NACK. In host mode (SMBHEN=Enabled) SMBus Alert pin (SMBA) not supported
1: Enabled: In device mode (SMBHEN=Disabled) Drives SMBA pin low and Alert Response Address Header enabled (0001100x) followed by ACK.In host mode (SMBHEN=Enabled) SMBus Alert pin (SMBA) supported

PECEN

Bit 23: PEC enable Note: If the SMBus feature is not supported, this bit is reserved and forced by hardware to 0. Refer to ..

Allowed values:
0: Disabled: PEC calculation disabled
1: Enabled: PEC calculation enabled

CR2

I2C control register 2

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

11/11 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PECBYTE
r/w1s
AUTOEND
rw
RELOAD
rw
NBYTES
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
NACK
r/w1s
STOP
r/w1s
START
r/w1s
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] should be written with the 7-bit slave address to be sent. The bits SADD[9], SADD[8] and SADD[0] are don't care. In 10-bit addressing mode (ADD10 = 1): SADD[9:0] should be written with the 10-bit slave address to be sent. Note: Changing these bits when the START bit is set is not allowed..

Allowed values: 0x0-0x3ff

RD_WRN

Bit 10: Transfer direction (master mode) Note: Changing this bit when the START bit is set is not allowed..

Allowed values:
0: Write: Master requests a write transfer
1: Read: Master requests a read transfer

ADD10

Bit 11: 10-bit addressing mode (master mode) Note: Changing this bit when the START bit is set is not allowed..

Allowed values:
0: Bit7: The master operates in 7-bit addressing mode
1: Bit10: The master operates in 10-bit addressing mode

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..

Allowed values:
0: Complete: The master sends the complete 10 bit slave address read sequence
1: Partial: The master only sends the 1st 7 bits of the 10 bit address, followed by Read direction

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. The START bit can be set even if the bus is BUSY or I2C is in slave mode. This bit has no effect when RELOAD is set..

Allowed values:
0: NoStart: No Start generation
1: Start: Restart/Start generation

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..

Allowed values:
0: NoStop: No Stop generation
1: Stop: Stop generation after current byte transfer

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. 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. When an overrun occurs in slave receiver NOSTRETCH mode, a NACK is automatically generated whatever the NACK bit value. When hardware PEC checking is enabled (PECBYTE=1), the PEC acknowledge value does not depend on the NACK value..

Allowed values:
0: Ack: an ACK is sent after current received byte
1: Nack: a NACK is sent after current received byte

NBYTES

Bits 16-23: Number of bytes The number of bytes to be transmitted/received is programmed there. This field is dont care in slave mode with SBC=0. Note: Changing these bits when the START bit is set is not allowed..

Allowed values: 0x0-0xff

RELOAD

Bit 24: NBYTES reload mode This bit is set and cleared by software..

Allowed values:
0: Completed: The transfer is completed after the NBYTES data transfer (STOP or RESTART will follow)
1: NotCompleted: The transfer is not completed after the NBYTES data transfer (NBYTES will be reloaded)

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..

Allowed values:
0: Software: Software end mode: TC flag is set when NBYTES data are transferred, stretching SCL low
1: Automatic: Automatic end mode: a STOP condition is automatically sent when NBYTES data are transferred

PECBYTE

Bit 26: Packet error checking byte This bit is set by software, and cleared by hardware when the PEC is transferred, or when a STOP condition or an Address matched is received, also when PE=0. Note: Writing 0 to this bit has no effect. This bit has no effect when RELOAD is set. This bit has no effect is slave mode when SBC=0. If the SMBus feature is not supported, this bit is reserved and forced by hardware to 0. Refer to ..

Allowed values:
0: NoPec: No PEC transfer
1: Pec: PEC transmission/reception is requested

OAR1

I2C own address 1 register

Offset: 0x8, 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
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. The 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..

Allowed values: 0x0-0x3ff

OA1MODE

Bit 10: Own Address 1 10-bit mode Note: This bit can be written only when OA1EN=0..

Allowed values:
0: Bit7: Own address 1 is a 7-bit address
1: Bit10: Own address 1 is a 10-bit address

OA1EN

Bit 15: Own Address 1 enable.

Allowed values:
0: Disabled: Own address 1 disabled. The received slave address OA1 is NACKed
1: Enabled: Own address 1 enabled. The received slave address OA1 is ACKed

OAR2

I2C own address 2 register

Offset: 0xc, 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
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..

Allowed values: 0x0-0x7f

OA2MSK

Bits 8-10: Own Address 2 masks Note: These bits can be written only when OA2EN=0. As soon as OA2MSK is not equal to 0, the reserved I2C addresses (0b0000xxx and 0b1111xxx) are not acknowledged even if the comparison matches..

Allowed values:
0: NoMask: No mask
1: Mask1: OA2[1] is masked and don’t care. Only OA2[7:2] are compared
2: Mask2: OA2[2:1] are masked and don’t care. Only OA2[7:3] are compared
3: Mask3: OA2[3:1] are masked and don’t care. Only OA2[7:4] are compared
4: Mask4: OA2[4:1] are masked and don’t care. Only OA2[7:5] are compared
5: Mask5: OA2[5:1] are masked and don’t care. Only OA2[7:6] are compared
6: Mask6: OA2[6:1] are masked and don’t care. Only OA2[7] is compared.
7: Mask7: OA2[7:1] are masked and don’t care. No comparison is done, and all (except reserved) 7-bit received addresses are acknowledged

OA2EN

Bit 15: Own Address 2 enable.

Allowed values:
0: Disabled: Own address 2 disabled. The received slave address OA2 is NACKed
1: Enabled: Own address 2 enabled. The received slave address OA2 is ACKed

TIMINGR

I2C timing register

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

5/5 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. tSCLL = (SCLL+1) x tPRESC Note: SCLL is also used to generate tBUF and tSU:STA timings..

Allowed values: 0x0-0xff

SCLH

Bits 8-15: SCL high period (master mode) This field is used to generate the SCL high period in master mode. tSCLH = (SCLH+1) x tPRESC Note: SCLH is also used to generate tSU:STO and tHD:STA timing..

Allowed values: 0x0-0xff

SDADEL

Bits 16-19: Data hold time This field is used to generate the delay tSDADEL between SCL falling edge and SDA edge. In master mode and in slave mode with NOSTRETCH = 0, the SCL line is stretched low during tSDADEL. tSDADEL= SDADEL x tPRESC Note: SDADEL is used to generate tHD:DAT timing..

Allowed values: 0x0-0xf

SCLDEL

Bits 20-23: Data setup time This field is used to generate a delay tSCLDEL between SDA edge and SCL rising edge. In master mode and in slave mode with NOSTRETCH = 0, the SCL line is stretched low during tSCLDEL. tSCLDEL = (SCLDEL+1) x tPRESC Note: tSCLDEL is used to generate tSU:DAT timing..

Allowed values: 0x0-0xf

PRESC

Bits 28-31: Timing prescaler This field is used to prescale I2CCLK in order to generate the clock period tPRESC used for data setup and hold counters (refer to ) and for SCL high and low level counters (refer to ). tPRESC = (PRESC+1) x tI2CCLK.

Allowed values: 0x0-0xf

TIMEOUTR

I2C timeout register

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

5/5 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 tTIMEOUT when TIDLE=0 tTIMEOUT= (TIMEOUTA+1) x 2048 x tI2CCLK The bus idle condition (both SCL and SDA high) when TIDLE=1 tIDLE= (TIMEOUTA+1) x 4 x tI2CCLK Note: These bits can be written only when TIMOUTEN=0..

Allowed values: 0x0-0xfff

TIDLE

Bit 12: Idle clock timeout detection Note: This bit can be written only when TIMOUTEN=0..

Allowed values:
0: Disabled: TIMEOUTA is used to detect SCL low timeout
1: Enabled: TIMEOUTA is used to detect both SCL and SDA high timeout (bus idle condition)

TIMOUTEN

Bit 15: Clock timeout enable.

Allowed values:
0: Disabled: SCL timeout detection is disabled
1: Enabled: SCL timeout detection is enabled

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 (tLOW:MEXT) is detected In slave mode, the slave cumulative clock low extend time (tLOW:SEXT) is detected tLOW:EXT= (TIMEOUTB+1) x 2048 x tI2CCLK Note: These bits can be written only when TEXTEN=0..

Allowed values: 0x0-0xfff

TEXTEN

Bit 31: Extended clock timeout enable.

Allowed values:
0: Disabled: Extended clock timeout detection is disabled
1: Enabled: Extended clock timeout detection is enabled

ISR

I2C interrupt and status register

Offset: 0x18, size: 32, reset: 0x00000001, access: Unspecified

17/17 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
ALERT
r
TIMEOUT
r
PECERR
r
OVR
r
ARLO
r
BERR
r
TCR
r
TC
r
STOPF
r
NACKF
r
ADDR
r
RXNE
r
TXIS
r/w1s
TXE
r/w1s
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..

Allowed values:
0: NotEmpty: TXDR register not empty
1: Empty: TXDR register empty

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 when NOSTRETCH=1 only, in order 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..

Allowed values:
0: NotEmpty: The TXDR register is not empty
1: Empty: The TXDR register is empty and the data to be transmitted must be written in the TXDR register

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..

Allowed values:
0: Empty: The RXDR register is empty
1: NotEmpty: Received data is copied into the RXDR register, and is ready to be read

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..

Allowed values:
0: NotMatch: Adress mismatched or not received
1: Match: Received slave address matched with one of the enabled slave addresses

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..

Allowed values:
0: NoNack: No NACK has been received
1: Nack: NACK has been received

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..

Allowed values:
0: NoStop: No Stop condition detected
1: Stop: Stop condition detected

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..

Allowed values:
0: NotComplete: Transfer is not complete
1: Complete: NBYTES has been transfered

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. This flag is only for master mode, or for slave mode when the SBC bit is set..

Allowed values:
0: NotComplete: Transfer is not complete
1: Complete: NBYTES has been transfered

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..

Allowed values:
0: NoError: No bus error
1: Error: Misplaced Start and Stop condition is detected

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..

Allowed values:
0: NotLost: No arbitration lost
1: Lost: Arbitration lost

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..

Allowed values:
0: NoOverrun: No overrun/underrun error occurs
1: Overrun: slave mode with NOSTRETCH=1, when an overrun/underrun error occurs

PECERR

Bit 11: PEC Error in reception This flag is set by hardware when the received PEC does not match with the PEC register content. A NACK is automatically sent after the wrong PEC reception. It is cleared by software by setting the PECCF bit. Note: This bit is cleared by hardware when PE=0. If the SMBus feature is not supported, this bit is reserved and forced by hardware to 0. Refer to ..

Allowed values:
0: Match: Received PEC does match with PEC register
1: NoMatch: Received PEC does not match with PEC register

TIMEOUT

Bit 12: Timeout or tLOW detection flag This flag is set by hardware when a timeout or extended clock timeout occurred. It is cleared by software by setting the TIMEOUTCF bit. Note: This bit is cleared by hardware when PE=0. If the SMBus feature is not supported, this bit is reserved and forced by hardware to 0. Refer to ..

Allowed values:
0: NoTimeout: No timeout occured
1: Timeout: Timeout occured

ALERT

Bit 13: SMBus alert This flag is set by hardware when SMBHEN=1 (SMBus host configuration), ALERTEN=1 and a SMBALERT event (falling edge) is detected on SMBA pin. It is cleared by software by setting the ALERTCF bit. Note: This bit is cleared by hardware when PE=0. If the SMBus feature is not supported, this bit is reserved and forced by hardware to 0. Refer to ..

Allowed values:
0: NoAlert: SMBA alert is not detected
1: Alert: SMBA alert event is detected on SMBA pin

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. It is cleared by hardware when a STOP condition is detected, or when PE=0..

Allowed values:
0: NotBusy: No communication is in progress on the bus
1: Busy: A communication is in progress on the bus

DIR

Bit 16: Transfer direction (Slave mode) This flag is updated when an address match event occurs (ADDR=1)..

Allowed values:
0: Write: Write transfer, slave enters receiver mode
1: Read: Read transfer, slave enters transmitter mode

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 2 MSBs of the address..

Allowed values: 0x0-0x7f

ICR

I2C interrupt clear register

Offset: 0x1c, 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
ALERTCF
w1c
TIMOUTCF
w1c
PECCF
w1c
OVRCF
w1c
ARLOCF
w1c
BERRCF
w1c
STOPCF
w1c
NACKCF
w1c
ADDRCF
w1c
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..

Allowed values:
1: Clear: Clears the ADDR flag in ISR register

NACKCF

Bit 4: Not Acknowledge flag clear Writing 1 to this bit clears the NACKF flag in I2C_ISR register..

Allowed values:
1: Clear: Clears the NACK flag in ISR register

STOPCF

Bit 5: STOP detection flag clear Writing 1 to this bit clears the STOPF flag in the I2C_ISR register..

Allowed values:
1: Clear: Clears the STOP flag in ISR register

BERRCF

Bit 8: Bus error flag clear Writing 1 to this bit clears the BERRF flag in the I2C_ISR register..

Allowed values:
1: Clear: Clears the BERR flag in ISR register

ARLOCF

Bit 9: Arbitration lost flag clear Writing 1 to this bit clears the ARLO flag in the I2C_ISR register..

Allowed values:
1: Clear: Clears the ARLO flag in ISR register

OVRCF

Bit 10: Overrun/Underrun flag clear Writing 1 to this bit clears the OVR flag in the I2C_ISR register..

Allowed values:
1: Clear: Clears the OVR flag in ISR register

PECCF

Bit 11: PEC Error flag clear Writing 1 to this bit clears the PECERR flag in the I2C_ISR register. Note: If the SMBus feature is not supported, this bit is reserved and forced by hardware to 0. Refer to ..

Allowed values:
1: Clear: Clears the PEC flag in ISR register

TIMOUTCF

Bit 12: Timeout detection flag clear Writing 1 to this bit clears the TIMEOUT flag in the I2C_ISR register. Note: If the SMBus feature is not supported, this bit is reserved and forced by hardware to 0. Refer to ..

Allowed values:
1: Clear: Clears the TIMOUT flag in ISR register

ALERTCF

Bit 13: Alert flag clear Writing 1 to this bit clears the ALERT flag in the I2C_ISR register. Note: If the SMBus feature is not supported, this bit is reserved and forced by hardware to 0. Refer to ..

Allowed values:
1: Clear: Clears the ALERT flag in ISR register

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..

Allowed values: 0x0-0xff

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 I2C bus.

Allowed values: 0x0-0xff

TXDR

I2C transmit data register

Offset: 0x28, 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
TXDATA
rw
Toggle fields

TXDATA

Bits 0-7: 8-bit transmit data Data byte to be transmitted to the I2C bus Note: These bits can be written only when TXE=1..

Allowed values: 0x0-0xff

IWDG

0x40003000: IWDG register block

7/7 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) KR
0x4 (16-bit) PR
0x8 (16-bit) RLR
0xc (16-bit) SR
0x10 (16-bit) WINR
Toggle registers

KR

IWDG key register

Offset: 0x0, 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
KEY
w
Toggle fields

KEY

Bits 0-15: Key value (write only, read 0x0000) These bits must be written by software at regular intervals with the key value 0xAAAA, otherwise the watchdog generates a reset when the counter reaches 0. Writing the key value 0x5555 to enable access to the IWDG_PR, IWDG_RLR and IWDG_WINR registers (see ) Writing the key value 0xCCCC starts the watchdog (except if the hardware watchdog option is selected).

Allowed values:
21845: Unlock: Enable access to PR, RLR and WINR registers
43690: Feed: Feed watchdog with RLR register value
52428: Start: Start the watchdog

PR

IWDG prescaler register

Offset: 0x4, 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
PR
rw
Toggle fields

PR

Bits 0-2: Prescaler divider These bits are write access protected see . They are written by software to select the prescaler divider feeding the counter clock. PVU bit of the must be reset in order to be able to change the prescaler divider. Note: Reading this register returns the prescaler value from the VDD 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 status register (IWDG_SR) is reset..

Allowed values:
0: DivideBy4: Divider /4
1: DivideBy8: Divider /8
2: DivideBy16: Divider /16
3: DivideBy32: Divider /32
4: DivideBy64: Divider /64
5: DivideBy128: Divider /128
6 (+): DivideBy256: Divider /256

RLR

IWDG reload register

Offset: 0x8, size: 16, reset: 0x00000FFF, access: Unspecified

1/1 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 . 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 . The watchdog counter counts down from this value. The timeout period is a function of this value and the clock prescaler. Refer to the datasheet for the timeout information. The RVU bit in the must be reset to be able to change the reload value. Note: Reading this register returns the reload value from the VDD voltage domain. This value may not be up to date/valid if a write operation to this register is ongoing on it. For this reason the value read from this register is valid only when the RVU bit in the status register (IWDG_SR) is reset..

Allowed values: 0x0-0xfff

SR

IWDG status register

Offset: 0xc, size: 16, reset: 0x00000000, access: Unspecified

3/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
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 VDD voltage domain (takes up to five LSI cycles). 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 VDD voltage domain (takes up to five LSI cycles). 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 VDD voltage domain (takes up to five LSI cycles). Window value can be updated only when WVU bit is reset..

WINR

IWDG window register

Offset: 0x10, size: 16, reset: 0x00000FFF, access: Unspecified

1/1 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 , they contain the high limit of the window value to be compared with the downcounter. To prevent a reset, the downcounter must be reloaded when its value is lower than the window register value and greater than 0x0 The WVU bit in the must be reset in order to be able to change the reload value. Note: Reading this register returns the reload value from the VDD 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_SR) is reset..

Allowed values: 0x0-0xfff

PWR

0x40007000: PWR address block description

8/117 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 CR1
0x8 CR3
0xc CR4
0x10 SR1
0x14 SR2
0x18 SCR
0x20 PUCRA
0x24 PDCRA
0x28 PUCRB
0x2c PDCRB
0x30 PUCRC
0x34 PDCRC
0x38 PUCRD
0x3c PDCRD
0x48 PUCRF
0x4c PDCRF
Toggle registers

CR1

PWR control register 1

Offset: 0x0, size: 32, reset: 0x00000208, access: Unspecified

0/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
FPD_SLP
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 deepsleep mode. 1XX: Shutdown mode.

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_SLP

Bit 5: Flash memory powered down during Sleep mode This bit determines whether the Flash memory is put in power-down mode or remains in idle mode when the device enters Sleep mode..

CR3

PWR control register 3

Offset: 0x8, size: 32, reset: 0x00008000, access: Unspecified

0/7 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EIWUL
rw
APC
rw
EWUP6
rw
EWUP4
rw
EWUP3
rw
EWUP2
rw
EWUP1
rw
Toggle fields

EWUP1

Bit 0: Enable WKUP1 wakeup pin When this bit is set, the WKUP1 external wakeup pin is enabled and triggers a wakeup event when a rising or a falling edge occurs. The active edge is configured via the WP1 bit of the PWR_CR4 register..

EWUP2

Bit 1: Enable WKUP2 wakeup pin When this bit is set, the WKUP2 external wakeup pin is enabled and triggers a wakeup event when a rising or a falling edge occurs. The active edge is configured via the WP2 bit of the PWR_CR4 register..

EWUP3

Bit 2: Enable WKUP3 wakeup pin When this bit is set, the WKUP3 external wakeup pin is enabled and triggers a wakeup event when a rising or a falling edge occurs. The active edge is configured via the WP3 bit of the PWR_CR4 register..

EWUP4

Bit 3: Enable WKUP4 wakeup pin When this bit is set, the WKUP4 external wakeup pin is enabled and triggers a wakeup event when a rising or a falling edge occurs. The active edge is configured via the WP4 bit in the PWR_CR4 register..

EWUP6

Bit 5: Enable WKUP6 wakeup pin When this bit is set, the WKUP6 external wakeup pin is enabled and triggers a wakeup event when a rising or a falling edge occurs. The active edge is configured through WP6 bit in the PWR_CR4 register..

APC

Bit 10: Apply pull-up and pull-down configuration This bit determines whether the I/O pull-up and pull-down configurations defined in the PWR_PUCRx and PWR_PDCRx registers are applied..

EIWUL

Bit 15: Enable internal wakeup line When set, a rising edge on the internal wakeup line triggers a wakeup event..

CR4

PWR control register 4

Offset: 0xc, 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
WP6
rw
WP4
rw
WP3
rw
WP2
rw
WP1
rw
Toggle fields

WP1

Bit 0: WKUP1 wakeup pin polarity WKUP1 external wakeup signal polarity (level or edge) to generate wakeup condition:.

WP2

Bit 1: WKUP2 wakeup pin polarity WKUP2 external wakeup signal polarity (level or edge) to generate wakeup condition:.

WP3

Bit 2: WKUP3 wakeup pin polarity WKUP3 external wakeup signal polarity (level or edge) to generate wakeup condition:.

WP4

Bit 3: WKUP4 wakeup pin polarity WKUP4 external wakeup signal polarity (level or edge) to generate wakeup condition:.

WP6

Bit 5: WKUP6 wakeup pin polarity WKUP6 external wakeup signal polarity (level or edge) to generate wakeup condition:.

SR1

PWR status register 1

Offset: 0x10, 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
WUFI
r
SBF
r
WUF6
r
WUF4
r
WUF3
r
WUF2
r
WUF1
r
Toggle fields

WUF1

Bit 0: Wakeup flag 1 This bit is set when a wakeup condition is detected on WKUP1 wakeup pin. It is cleared by setting the CWUF1 bit of the PWR_SCR register..

WUF2

Bit 1: Wakeup flag 2 This bit is set when a wakeup condition is detected on WKUP2 wakeup pin. It is cleared by setting the CWUF2 bit of the PWR_SCR register..

WUF3

Bit 2: Wakeup flag 3 This bit is set when a wakeup condition is detected on WKUP3 wakeup pin. It is cleared by setting the CWUF3 bit of the PWR_SCR register..

WUF4

Bit 3: Wakeup flag 4 This bit is set when a wakeup condition is detected on WKUP4 wakeup pin. It is cleared by setting the CWUF4 bit of the PWR_SCR register..

WUF6

Bit 5: Wakeup flag 6 This bit is set when a wakeup condition is detected on WKUP6 wakeup pin. It is cleared by setting the CWUF6 bit of the PWR_SCR register..

SBF

Bit 8: Standby/Shutdown flag This bit is set by hardware when the device enters Standby or Shutdown 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..

WUFI

Bit 15: Wakeup flag internal This bit is set when a wakeup condition is detected on the internal wakeup line. It is cleared when all internal wakeup sources are cleared..

SR2

PWR status register 2

Offset: 0x14, 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
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 ready to be accessed after wakeup from power-down. To place the Flash memory in power-down, set either FPD_SLP or FPD_STP bit. Note: If the system boots from SRAM, the user application must wait till FLASH_RDY bit is set, prior to jumping to Flash memory..

SCR

PWR status clear register

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
CSBF
w
CWUF6
w
CWUF4
w
CWUF3
w
CWUF2
w
CWUF1
w
Toggle fields

CWUF1

Bit 0: Clear wakeup flag 1 Setting this bit clears the WUF1 flag in the PWR_SR1 register..

CWUF2

Bit 1: Clear wakeup flag 2 Setting this bit clears the WUF2 flag in the PWR_SR1 register..

CWUF3

Bit 2: Clear wakeup flag 3 Setting this bit clears the WUF3 flag in the PWR_SR1 register..

CWUF4

Bit 3: Clear wakeup flag 4 Setting this bit clears the WUF4 flag in the PWR_SR1 register..

CWUF6

Bit 5: Clear wakeup flag 6 Setting this bit clears the WUF6 flag in the PWR_SR1 register..

CSBF

Bit 8: Clear standby flag Setting this bit clears the SBF flag in the PWR_SR1 register..

PUCRA

PWR 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 i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PA[i] I/O..

PU1

Bit 1: Port A pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PA[i] I/O..

PU2

Bit 2: Port A pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PA[i] I/O..

PU3

Bit 3: Port A pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PA[i] I/O..

PU4

Bit 4: Port A pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PA[i] I/O..

PU5

Bit 5: Port A pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PA[i] I/O..

PU6

Bit 6: Port A pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PA[i] I/O..

PU7

Bit 7: Port A pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PA[i] I/O..

PU8

Bit 8: Port A pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PA[i] I/O..

PU9

Bit 9: Port A pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PA[i] I/O..

PU10

Bit 10: Port A pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PA[i] I/O..

PU11

Bit 11: Port A pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PA[i] I/O..

PU12

Bit 12: Port A pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PA[i] I/O..

PU13

Bit 13: Port A pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PA[i] I/O..

PU14

Bit 14: Port A pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PA[i] I/O..

PU15

Bit 15: Port A pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PA[i] I/O..

PDCRA

PWR 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 i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PA[i] I/O..

PD1

Bit 1: Port A pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PA[i] I/O..

PD2

Bit 2: Port A pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PA[i] I/O..

PD3

Bit 3: Port A pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PA[i] I/O..

PD4

Bit 4: Port A pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PA[i] I/O..

PD5

Bit 5: Port A pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PA[i] I/O..

PD6

Bit 6: Port A pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PA[i] I/O..

PD7

Bit 7: Port A pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PA[i] I/O..

PD8

Bit 8: Port A pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PA[i] I/O..

PD9

Bit 9: Port A pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PA[i] I/O..

PD10

Bit 10: Port A pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PA[i] I/O..

PD11

Bit 11: Port A pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PA[i] I/O..

PD12

Bit 12: Port A pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PA[i] I/O..

PD13

Bit 13: Port A pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PA[i] I/O..

PD14

Bit 14: Port A pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PA[i] I/O..

PD15

Bit 15: Port A pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PA[i] I/O..

PUCRB

PWR 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 i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PB[i] I/O. On STM32C011xx, only PU7 and PU6 are available.

PU1

Bit 1: Port B pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PB[i] I/O. On STM32C011xx, only PU7 and PU6 are available.

PU2

Bit 2: Port B pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PB[i] I/O. On STM32C011xx, only PU7 and PU6 are available.

PU3

Bit 3: Port B pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PB[i] I/O. On STM32C011xx, only PU7 and PU6 are available.

PU4

Bit 4: Port B pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PB[i] I/O. On STM32C011xx, only PU7 and PU6 are available.

PU5

Bit 5: Port B pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PB[i] I/O. On STM32C011xx, only PU7 and PU6 are available.

PU6

Bit 6: Port B pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PB[i] I/O. On STM32C011xx, only PU7 and PU6 are available.

PU7

Bit 7: Port B pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PB[i] I/O. On STM32C011xx, only PU7 and PU6 are available.

PU8

Bit 8: Port B pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PB[i] I/O. On STM32C011xx, only PU7 and PU6 are available.

PU9

Bit 9: Port B pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PB[i] I/O. On STM32C011xx, only PU7 and PU6 are available.

PU10

Bit 10: Port B pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PB[i] I/O. On STM32C011xx, only PU7 and PU6 are available.

PU11

Bit 11: Port B pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PB[i] I/O. On STM32C011xx, only PU7 and PU6 are available.

PU12

Bit 12: Port B pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PB[i] I/O. On STM32C011xx, only PU7 and PU6 are available.

PU13

Bit 13: Port B pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PB[i] I/O. On STM32C011xx, only PU7 and PU6 are available.

PU14

Bit 14: Port B pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PB[i] I/O. On STM32C011xx, only PU7 and PU6 are available.

PU15

Bit 15: Port B pull-up bit i (i = 15 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PB[i] I/O. On STM32C011xx, only PU7 and PU6 are available.

PDCRB

PWR 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 i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PB[i] I/O. On STM32C011xx, only PD7 and PD6 are available.

PD1

Bit 1: Port B pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PB[i] I/O. On STM32C011xx, only PD7 and PD6 are available.

PD2

Bit 2: Port B pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PB[i] I/O. On STM32C011xx, only PD7 and PD6 are available.

PD3

Bit 3: Port B pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PB[i] I/O. On STM32C011xx, only PD7 and PD6 are available.

PD4

Bit 4: Port B pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PB[i] I/O. On STM32C011xx, only PD7 and PD6 are available.

PD5

Bit 5: Port B pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PB[i] I/O. On STM32C011xx, only PD7 and PD6 are available.

PD6

Bit 6: Port B pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PB[i] I/O. On STM32C011xx, only PD7 and PD6 are available.

PD7

Bit 7: Port B pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PB[i] I/O. On STM32C011xx, only PD7 and PD6 are available.

PD8

Bit 8: Port B pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PB[i] I/O. On STM32C011xx, only PD7 and PD6 are available.

PD9

Bit 9: Port B pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PB[i] I/O. On STM32C011xx, only PD7 and PD6 are available.

PD10

Bit 10: Port B pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PB[i] I/O. On STM32C011xx, only PD7 and PD6 are available.

PD11

Bit 11: Port B pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PB[i] I/O. On STM32C011xx, only PD7 and PD6 are available.

PD12

Bit 12: Port B pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PB[i] I/O. On STM32C011xx, only PD7 and PD6 are available.

PD13

Bit 13: Port B pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PB[i] I/O. On STM32C011xx, only PD7 and PD6 are available.

PD14

Bit 14: Port B pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PB[i] I/O. On STM32C011xx, only PD7 and PD6 are available.

PD15

Bit 15: Port B pull-down bit i (i = 15 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PB[i] I/O. On STM32C011xx, only PD7 and PD6 are available.

PUCRC

PWR Port C pull-up control register

Offset: 0x30, 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
PU15
rw
PU14
rw
PU13
rw
PU7
rw
PU6
rw
Toggle fields

PU6

Bit 6: Port C pull-up bit i (i = 15 to 13, 7 to 6) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PC[i] I/O. On STM32C011xx, only PU15 and PU14 are available.

PU7

Bit 7: Port C pull-up bit i (i = 15 to 13, 7 to 6) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PC[i] I/O. On STM32C011xx, only PU15 and PU14 are available.

PU13

Bit 13: Port C pull-up bit i (i = 15 to 13, 7 to 6) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PC[i] I/O. On STM32C011xx, only PU15 and PU14 are available.

PU14

Bit 14: Port C pull-up bit i (i = 15 to 13, 7 to 6) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PC[i] I/O. On STM32C011xx, only PU15 and PU14 are available.

PU15

Bit 15: Port C pull-up bit i (i = 15 to 13, 7 to 6) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PC[i] I/O. On STM32C011xx, only PU15 and PU14 are available.

PDCRC

PWR Port C pull-down control register

Offset: 0x34, 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
PD15
rw
PD14
rw
PD13
rw
PD7
rw
PD6
rw
Toggle fields

PD6

Bit 6: Port C pull-down bit i (i = 15, 14, 13, 7, 6) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PC[i] I/O. On STM32C011xx, only PD15 and PD14 are available..

PD7

Bit 7: Port C pull-down bit i (i = 15, 14, 13, 7, 6) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PC[i] I/O. On STM32C011xx, only PD15 and PD14 are available..

PD13

Bit 13: Port C pull-down bit i (i = 15, 14, 13, 7, 6) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PC[i] I/O. On STM32C011xx, only PD15 and PD14 are available..

PD14

Bit 14: Port C pull-down bit i (i = 15, 14, 13, 7, 6) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PC[i] I/O. On STM32C011xx, only PD15 and PD14 are available..

PD15

Bit 15: Port C pull-down bit i (i = 15, 14, 13, 7, 6) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PC[i] I/O. On STM32C011xx, only PD15 and PD14 are available..

PUCRD

PWR Port D pull-up control register

Offset: 0x38, 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 D pull-up bit i (i = 3 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PD[i] I/O..

PU1

Bit 1: Port D pull-up bit i (i = 3 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PD[i] I/O..

PU2

Bit 2: Port D pull-up bit i (i = 3 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PD[i] I/O..

PU3

Bit 3: Port D pull-up bit i (i = 3 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PD[i] I/O..

PDCRD

PWR Port D pull-down control register

Offset: 0x3c, 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 D pull-down bit i (i = 3 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PD[i] I/O..

PD1

Bit 1: Port D pull-down bit i (i = 3 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PD[i] I/O..

PD2

Bit 2: Port D pull-down bit i (i = 3 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PD[i] I/O..

PD3

Bit 3: Port D pull-down bit i (i = 3 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PD[i] I/O..

PUCRF

PWR Port F pull-up control register

Offset: 0x48, 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
PU2
rw
PU1
rw
PU0
rw
Toggle fields

PU0

Bit 0: Port F pull-up bit i (i = 2 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PF[i] I/O. On STM32C011xx, only PU2 is available..

PU1

Bit 1: Port F pull-up bit i (i = 2 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PF[i] I/O. On STM32C011xx, only PU2 is available..

PU2

Bit 2: Port F pull-up bit i (i = 2 to 0) Setting PUi bit while the corresponding PDi bit is zero and the APC bit of the PWR_CR3 register is set activates a pull-up device on the PF[i] I/O. On STM32C011xx, only PU2 is available..

PDCRF

PWR Port F pull-down control register

Offset: 0x4c, 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
PD2
rw
PD1
rw
PD0
rw
Toggle fields

PD0

Bit 0: Port F pull-down bit i (i = 2 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PF[i] I/O. On STM32C011xx, only PD2 is available..

PD1

Bit 1: Port F pull-down bit i (i = 2 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PF[i] I/O. On STM32C011xx, only PD2 is available..

PD2

Bit 2: Port F pull-down bit i (i = 2 to 0) Setting PDi bit while the APC bit of the PWR_CR3 register is set activates a pull-down device on the PF[i] I/O. On STM32C011xx, only PD2 is available..

RCC

0x40021000: RCC address block description

20/129 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 CR
0x4 ICSCR
0x8 CFGR
0x18 CIER
0x1c CIFR
0x20 CICR
0x24 IOPRSTR
0x28 AHBRSTR
0x2c APBRSTR1
0x30 APBRSTR2
0x34 IOPENR
0x38 AHBENR
0x3c APBENR1
0x40 APBENR2
0x44 IOPSMENR
0x48 AHBSMENR
0x4c APBSMENR1
0x50 APBSMENR2
0x54 CCIPR
0x5c CSR1
0x60 CSR2
Toggle registers

CR

RCC clock control register

Offset: 0x0, size: 32, reset: 0x00000500, access: Unspecified

2/10 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CSSON
rw
HSEBYP
rw
HSERDY
r
HSEON
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
HSIDIV
rw
HSIRDY
r
HSIKERON
rw
HSION
rw
HSIKERDIV
rw
SYSDIV
rw
Toggle fields

SYSDIV

Bits 2-4: System clock division factor This bitfield controlled by software sets the division factor of the system clock divider to produce SYSCLK clock:.

HSIKERDIV

Bits 5-7: HSI48 kernel clock division factor This bitfield controlled by software sets the division factor of the kernel clock divider to produce HSIKER clock:.

HSION

Bit 8: HSI48 clock enable Set and cleared by software and hardware, with hardware taking priority. Kept low by hardware as long as the device is in a low-power mode. Kept high by hardware as long as the system is clocked with a clock derived from HSI48. This includes the exit from low-power modes and the system clock fall-back to HSI48 upon failing HSE oscillator clock selected as system clock source..

HSIKERON

Bit 9: HSI48 always-enable for peripheral kernels. Set and cleared by software. Setting the bit activates the HSI48 oscillator in Run and Stop modes, regardless of the HSION bit state. The HSI48 clock can only feed USART1, USART2, and I2C1 peripherals configured with HSI48 as kernel clock. Note: Keeping the HSI48 active in Stop mode allows speeding up the serial interface communication as the HSI48 clock is ready immediately upon exiting Stop mode..

HSIRDY

Bit 10: HSI48 clock ready flag Set by hardware when the HSI48 oscillator is enabled through HSION and ready to use (stable). Note: Upon clearing HSION, HSIRDY goes low after six HSI48 clock cycles..

HSIDIV

Bits 11-13: HSI48 clock division factor This bitfield controlled by software sets the division factor of the HSI48 clock divider to produce HSISYS clock:.

HSEON

Bit 16: HSE clock enable Set and cleared by software. Cleared by hardware to stop the HSE oscillator when entering Stop, or Standby, or Shutdown mode. This bit cannot be cleared 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 and ready for use. Note: Upon clearing HSEON, HSERDY goes low after six HSE clock cycles..

HSEBYP

Bit 18: HSE crystal oscillator bypass Set and cleared by software. When the bit is set, the internal HSE oscillator is bypassed for use of an external clock. The external clock must then be enabled with the HSEON bit set. Write access to the bit is only effective when the HSE oscillator is disabled..

CSSON

Bit 19: Clock security system enable Set by software to enable the clock security system. When the bit 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. The bit is cleared by hardware upon reset..

ICSCR

RCC internal clock source calibration register

Offset: 0x4, size: 32, reset: 0x00004000, access: Unspecified

1/2 fields covered.

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

HSICAL

Bits 0-7: HSI48 clock calibration This bitfield directly acts on the HSI48 clock frequency. Its value is a sum of an internal factory-programmed number and the value of the HSITRIM[6:0] bitfield. In the factory, the internal number is set to calibrate the HSI48 clock frequency to 48 MHz (with HSITRIM[6:0] left at its reset value). Refer to the device datasheet for HSI48 calibration accuracy and for the frequency trimming granularity. Note: The trimming effect presents discontinuities at HSICAL[7:0] multiples of 64..

HSITRIM

Bits 8-14: HSI48 clock trimming The value of this bitfield contributes to the HSICAL[7:0] bitfield value. It allows HSI48 clock frequency user trimming. The HSI48 frequency accuracy as stated in the device datasheet applies when this bitfield is left at its reset value..

CFGR

RCC clock configuration register

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

1/8 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
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, or 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.

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.

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: This bitfield is controlled by software. It sets the clock selector for MCO output as follows: 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: ... 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: Note: This clock output may have some truncated cycles at startup or during MCO clock source switching. Any other value means no clock on MCO..

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: ... It is highly recommended to set this field before the MCO output is enabled..

CIER

RCC clock interrupt enable 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
HSERDYIE
rw
HSIRDYIE
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:.

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:.

CIFR

RCC clock interrupt flag register

Offset: 0x1c, 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
LSECSSF
r
CSSF
r
HSERDYF
r
HSIRDYF
r
LSERDYF
r
LSIRDYF
r
Toggle fields

LSIRDYF

Bit 0: LSI ready interrupt flag This flag indicates a pending interrupt upon LSE clock getting ready. 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 This flag indicates a pending interrupt upon LSE clock getting ready. Set by hardware when the LSE clock becomes stable and LSERDYDIE is set. Cleared by software setting the LSERDYC bit..

HSIRDYF

Bit 3: HSI16 ready interrupt flag This flag indicates a pending interrupt upon HSI16 clock getting ready. Set by hardware when the HSI16 clock becomes stable and HSIRDYIE is set in response to setting the HSION (refer to ). 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 This flag indicates a pending interrupt upon HSE clock getting ready. Set by hardware when the HSE clock becomes stable and HSERDYIE is set. Cleared by software setting the HSERDYC bit..

CSSF

Bit 8: HSE clock security system interrupt flag This flag indicates a pending interrupt upon HSE clock failure. 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 This flag indicates a pending interrupt upon LSE clock failure. Set by hardware when a failure is detected in the LSE oscillator. Cleared by software by setting the LSECSSC bit..

CICR

RCC clock interrupt clear register

Offset: 0x20, 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
LSECSSC
w
CSSC
w
HSERDYC
w
HSIRDYC
w
LSERDYC
w
LSIRDYC
w
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..

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..

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..

IOPRSTR

RCC I/O port reset register

Offset: 0x24, 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
GPIOFRST
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..

GPIOFRST

Bit 5: I/O port F reset This bit is set and cleared by software..

AHBRSTR

RCC AHB peripheral reset register

Offset: 0x28, 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
CRCRST
rw
FLASHRST
rw
DMA1RST
rw
Toggle fields

DMA1RST

Bit 0: DMA1 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..

APBRSTR1

RCC APB peripheral reset register 1

Offset: 0x2c, 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
PWRRST
rw
DBGRST
rw
I2C1RST
rw
USART2RST
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TIM3RST
rw
Toggle fields

TIM3RST

Bit 1: TIM3 timer reset Set and cleared by software..

USART2RST

Bit 17: USART2 reset Set and cleared by software..

I2C1RST

Bit 21: I2C1 reset Set and cleared by software..

DBGRST

Bit 27: Debug support reset Set and cleared by software..

PWRRST

Bit 28: Power interface reset Set and cleared by software..

APBRSTR2

RCC APB peripheral reset register 2

Offset: 0x30, 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
ADCRST
rw
TIM17RST
rw
TIM16RST
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TIM14RST
rw
USART1RST
rw
SPI1RST
rw
TIM1RST
rw
SYSCFGRST
rw
Toggle fields

SYSCFGRST

Bit 0: SYSCFG 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..

TIM14RST

Bit 15: TIM14 timer reset Set and cleared by software..

TIM16RST

Bit 17: TIM16 timer reset Set and cleared by software..

TIM17RST

Bit 18: TIM16 timer reset Set and cleared by software..

ADCRST

Bit 20: ADC reset Set and cleared by software..

IOPENR

RCC I/O port clock enable register

Offset: 0x34, 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
GPIOFEN
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..

GPIOFEN

Bit 5: I/O port F clock enable This bit is set and cleared by software..

AHBENR

RCC AHB peripheral clock enable register

Offset: 0x38, size: 32, reset: 0x00000100, access: Unspecified

0/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CRCEN
rw
FLASHEN
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..

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..

APBENR1

RCC APB peripheral clock enable register 1

Offset: 0x3c, 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
PWREN
rw
DBGEN
rw
I2C1EN
rw
USART2EN
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
WWDGEN
rw
RTCAPBEN
rw
TIM3EN
rw
Toggle fields

TIM3EN

Bit 1: TIM3 timer clock enable 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..

USART2EN

Bit 17: USART2 clock enable Set and cleared by software..

I2C1EN

Bit 21: I2C1 clock enable Set and cleared by software..

DBGEN

Bit 27: Debug support clock enable Set and cleared by software..

PWREN

Bit 28: Power interface clock enable Set and cleared by software..

APBENR2

RCC APB peripheral clock enable register 2

Offset: 0x40, 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
ADCEN
rw
TIM17EN
rw
TIM16EN
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TIM14EN
rw
USART1EN
rw
SPI1EN
rw
TIM1EN
rw
SYSCFGEN
rw
Toggle fields

SYSCFGEN

Bit 0: SYSCFG 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..

TIM14EN

Bit 15: TIM14 timer clock enable Set and cleared by software..

TIM16EN

Bit 17: TIM16 timer clock enable Set and cleared by software..

TIM17EN

Bit 18: TIM16 timer clock enable Set and cleared by software..

ADCEN

Bit 20: ADC clock enable Set and cleared by software..

IOPSMENR

RCC I/O port in Sleep mode clock enable register

Offset: 0x44, size: 32, reset: 0x0000003F, access: Unspecified

0/5 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
GPIOFSMEN
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 Set and cleared by software..

GPIOFSMEN

Bit 5: I/O port F clock enable during Sleep mode Set and cleared by software..

AHBSMENR

RCC AHB peripheral clock enable in Sleep/Stop mode register

Offset: 0x48, size: 32, reset: 0x00051303, access: Unspecified

0/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CRCSMEN
rw
SRAMSMEN
rw
FLASHSMEN
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..

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..

APBSMENR1

RCC APB peripheral clock enable in Sleep/Stop mode register 1

Offset: 0x4c, size: 32, reset: 0x18EF7F36, access: Unspecified

0/7 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
PWRSMEN
rw
DBGSMEN
rw
I2C1SMEN
rw
USART2SMEN
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
WWDGSMEN
rw
RTCAPBSMEN
rw
TIM3SMEN
rw
Toggle fields

TIM3SMEN

Bit 1: TIM3 timer clock enable during Sleep mode 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..

USART2SMEN

Bit 17: USART2 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..

DBGSMEN

Bit 27: Debug support clock enable during Sleep mode Set and cleared by software..

PWRSMEN

Bit 28: Power interface clock enable during Sleep mode Set and cleared by software..

APBSMENR2

RCC APB peripheral clock enable in Sleep/Stop mode register 2

Offset: 0x50, size: 32, reset: 0x0017D801, access: Unspecified

0/8 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ADCSMEN
rw
TIM17SMEN
rw
TIM16SMEN
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TIM14SMEN
rw
USART1SMEN
rw
SPI1SMEN
rw
TIM1SMEN
rw
SYSCFGSMEN
rw
Toggle fields

SYSCFGSMEN

Bit 0: SYSCFG 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..

TIM14SMEN

Bit 15: TIM14 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..

TIM17SMEN

Bit 18: 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..

CCIPR

RCC peripherals independent clock configuration register

Offset: 0x54, 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
ADCSEL
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
I2S1SEL
rw
I2C1SEL
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:.

I2C1SEL

Bits 12-13: I2C1 clock source selection This bitfield is controlled by software to select I2C1 clock source as follows:.

I2S1SEL

Bits 14-15: I2S1 clock source selection This bitfield is controlled by software to select I2S1 clock source as follows:.

ADCSEL

Bits 30-31: ADCs clock source selection This bitfield is controlled by software to select the clock source for ADC:.

CSR1

RCC control/status register 1

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

2/11 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
LSCOSEL
rw
LSCOEN
rw
RTCRST
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RTCEN
rw
RTCSEL
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 32 kHz 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 32 kHz 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 (32 kHz) 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 32 kHz oscillator (LSE):.

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 RTCRST bit can be used to reset this bitfield to 00..

RTCEN

Bit 15: RTC clock enable Set and cleared by software. The bit enables clock to RTC and TAMP..

RTCRST

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:.

CSR2

RCC control/status register 2

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

8/10 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
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..

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, or Standby, or Shutdown mode entry. Cleared by setting the RMVF bit. This operates only if nRST_STOP, or nRST_STDBY or nRST_SHDW option bits are cleared..

RTC

0x40002800: RTC register block

88/89 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 TR
0x4 DR
0x8 SSR
0xc ICSR
0x10 PRER
0x18 CR
0x24 WPR
0x28 CALR
0x2c SHIFTR
0x30 TSTR
0x34 TSDR
0x38 TSSSR
0x40 ALRMAR
0x44 ALRMASSR
0x50 SR
0x54 MISR
0x5c SCR
Toggle registers

TR

RTC time register

Offset: 0x0, 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
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.

Allowed values: 0x0-0xf

ST

Bits 4-6: Second tens in BCD format.

Allowed values: 0x0-0x7

MNU

Bits 8-11: Minute units in BCD format.

Allowed values: 0x0-0xf

MNT

Bits 12-14: Minute tens in BCD format.

Allowed values: 0x0-0x7

HU

Bits 16-19: Hour units in BCD format.

Allowed values: 0x0-0xf

HT

Bits 20-21: Hour tens in BCD format.

Allowed values: 0x0-0x3

PM

Bit 22: AM/PM notation.

Allowed values:
0: AM: AM or 24-hour format
1: PM: PM

DR

RTC date register

Offset: 0x4, size: 32, reset: 0x00002101, access: Unspecified

7/7 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.

Allowed values: 0x0-0xf

DT

Bits 4-5: Date tens in BCD format.

Allowed values: 0x0-0x3

MU

Bits 8-11: Month units in BCD format.

Allowed values: 0x0-0xf

MT

Bit 12: Month tens in BCD format.

Allowed values: 0x0-0x1

WDU

Bits 13-15: Week day units ....

Allowed values: 0x1-0x7

YU

Bits 16-19: Year units in BCD format.

Allowed values: 0x0-0xf

YT

Bits 20-23: Year tens in BCD format.

Allowed values: 0x0-0xf

SSR

RTC sub second register

Offset: 0x8, 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
SS
r
Toggle fields

SS

Bits 0-15: Sub second value 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) Note: 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..

Allowed values: 0x0-0xffff

ICSR

RTC initialization control and status register

Offset: 0xc, size: 32, reset: 0x00000007, access: Unspecified

7/7 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
INIT
rw
INITF
r
RSF
r/w0c
INITS
r
SHPF
r
ALRAWF
r
Toggle fields

ALRAWF

Bit 0: Alarm A write flag This bit is set by hardware when alarm A values can be changed, after the ALRAE 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..

Allowed values:
0: NoShiftPending: No shift operation is pending
1: ShiftPending: A shift operation is pending

INITS

Bit 4: Initialization status flag This bit is set by hardware when the calendar year field is different from 0 (Power-on reset state)..

Allowed values:
0: NotInitalized: Calendar has not been initialized
1: Initalized: Calendar has been initialized

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..

Allowed values:
0: NotSynced: Calendar shadow registers not yet synchronized
1: Synced: Calendar shadow registers synchronized

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..

Allowed values:
0: NotAllowed: Calendar registers update is not allowed
1: Allowed: Calendar registers update is allowed

INIT

Bit 7: Initialization mode.

Allowed values:
0: FreeRunningMode: Free running mode
1: InitMode: Initialization mode used to program time and date register (RTC_TR and RTC_DR), and prescaler register (RTC_PRER). Counters are stopped and start counting from the new value when INIT is reset.

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 ..

Allowed values:
1: Pending: 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

PRER

RTC prescaler register

Offset: 0x10, size: 32, reset: 0x007F00FF, access: Unspecified

2/2 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).

Allowed values: 0x0-0x7fff

PREDIV_A

Bits 16-22: Asynchronous prescaler factor This is the asynchronous division factor: ck_apre frequency = RTCCLK frequency/(PREDIV_A+1).

Allowed values: 0x0-0x7f

CR

RTC control register

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

18/18 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OUT2EN
rw
TAMPALRM_TYPE
rw
TAMPALRM_PU
rw
COE
rw
OSEL
rw
POL
rw
COSEL
rw
BKP
rw
SUB1H
w
ADD1H
w
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TSIE
rw
ALRAIE
rw
TSE
rw
ALRAE
rw
FMT
rw
BYPSHAD
rw
REFCKON
rw
TSEDGE
rw
Toggle fields

TSEDGE

Bit 3: Timestamp event active edge TSE must be reset when TSEDGE is changed to avoid unwanted TSF setting..

Allowed values:
0: RisingEdge: RTC_TS input rising edge generates a time-stamp event
1: FallingEdge: RTC_TS input falling edge generates a time-stamp event

REFCKON

Bit 4: RTC_REFIN reference clock detection enable (50 or 60 Hz) Note: PREDIV_S must be 0x00FF..

Allowed values:
0: Disabled: RTC_REFIN detection disabled
1: Enabled: RTC_REFIN detection enabled

BYPSHAD

Bit 5: Bypass the shadow registers Note: If the frequency of the APB1 clock is less than seven times the frequency of RTCCLK, BYPSHAD must be set to 1..

Allowed values:
0: ShadowReg: Calendar values (when reading from RTC_SSR, RTC_TR, and RTC_DR) are taken from the shadow registers, which are updated once every two RTCCLK cycles
1: BypassShadowReg: Calendar values (when reading from RTC_SSR, RTC_TR, and RTC_DR) are taken directly from the calendar counters

FMT

Bit 6: Hour format.

Allowed values:
0: TwentyFourHour: 24 hour/day format
1: AmPm: AM/PM hour format

ALRAE

Bit 8: Alarm A enable.

Allowed values:
0: Disabled: Alarm disabled
1: Enabled: Alarm enabled

TSE

Bit 11: timestamp enable.

Allowed values:
0: Disabled: Timestamp disabled
1: Enabled: Timestamp enabled

ALRAIE

Bit 12: Alarm A interrupt enable.

Allowed values:
0: Disabled: Alarm Interrupt disabled
1: Enabled: Alarm Interrupt enabled

TSIE

Bit 15: Timestamp interrupt enable.

Allowed values:
0: Disabled: Time-stamp Interrupt disabled
1: Enabled: Time-stamp Interrupt enabled

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..

Allowed values:
1: Add1: Adds 1 hour to the current time. This can be used for summer time change outside initialization mode

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..

Allowed values:
1: Sub1: Subtracts 1 hour to the current time. This can be used for winter time change outside initialization mode

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..

Allowed values:
0: DSTNotChanged: Daylight Saving Time change has not been performed
1: DSTChanged: Daylight Saving Time change has been performed

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 32.768 kHz and prescalers at their default values (PREDIV_A = 127 and PREDIV_S = 255). Refer to ..

Allowed values:
0: CalFreq_512Hz: Calibration output is 512 Hz (with default prescaler setting)
1: CalFreq_1Hz: Calibration output is 1 Hz (with default prescaler setting)

POL

Bit 20: Output polarity This bit is used to configure the polarity of TAMPALRM output..

Allowed values:
0: High: The pin is high when ALRAF/ALRBF/WUTF is asserted (depending on OSEL[1:0])
1: Low: The pin is low when ALRAF/ALRBF/WUTF is asserted (depending on OSEL[1:0])

OSEL

Bits 21-22: Output selection These bits are used to select the flag to be routed to TAMPALRM output..

Allowed values:
0: Disabled: Output disabled
1: AlarmA: Alarm A output enabled
2: AlarmB: Alarm B output enabled
3: Wakeup: Wakeup output enabled

COE

Bit 23: Calibration output enable This bit enables the CALIB output.

Allowed values:
0: Disabled: Calibration output disabled
1: Enabled: Calibration output enabled

TAMPALRM_PU

Bit 29: TAMPALRM pull-up enable.

Allowed values:
0: NoPullUp: No pull-up is applied on TAMPALRM output
1: PullUp: A pull-up is applied on TAMPALRM output

TAMPALRM_TYPE

Bit 30: TAMPALRM output type.

Allowed values:
0: PushPull: TAMPALRM is push-pull output
1: OpenDrain: TAMPALRM is open-drain output

OUT2EN

Bit 31: RTC_OUT2 output enable Setting this bit allows to remap the RTC outputs on RTC_OUT2 as follows: OUT2EN = 0: RTC output 2 disable If OSEL different of 00 or TAMPOE = 1: TAMPALRM is output on RTC_OUT1 If OSEL = 00 and TAMPOE = 0 and COE = 1: CALIB is output on RTC_OUT1 OUT2EN = 1: RTC output 2 enable If (OSEL different of 00 or TAMPOE = 1) and COE = 0: TAMPALRM is output on RTC_OUT2 If OSEL = 00 and TAMPOE = 0 and COE = 1: CALIB is output on RTC_OUT2 If (OSELdifferent of 00 or TAMPOE = 1) and COE = 1: CALIB is output on RTC_OUT2 and TAMPALRM is output on RTC_OUT1..

Allowed values:
0: Disabled: RTC output 2 disable
1: Enabled: RTC output 2 enable

WPR

RTC write protection 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
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 for a description of how to unlock RTC register write protection..

Allowed values:
0: Activate: Activate write protection (any value that is not the keys)
83: Deactivate2: Key 2
202: Deactivate1: Key 1

CALR

RTC calibration register

Offset: 0x28, 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
CALP
rw
CALW8
rw
CALW16
rw
CALM
rw
Toggle fields

CALM

Bits 0-8: Calibration minus The frequency of the calendar is reduced by masking CALM out of 220 RTCCLK pulses (32 seconds if the input frequency is 32768 Hz). This decreases the frequency of the calendar with a resolution of 0.9537 ppm. To increase the frequency of the calendar, this feature should be used in conjunction with CALP. See ..

Allowed values: 0x0-0x1ff

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 calibration..

Allowed values:
1: SixteenSeconds: 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

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 digital calibration..

Allowed values:
1: EightSeconds: When CALW8 is set to ‘1’, the 8-second calibration cycle period is selected

CALP

Bit 15: Increase frequency of RTC by 488.5 ppm This feature is intended to be used in conjunction with CALM, which lowers the frequency of the calendar with a fine resolution. if the input frequency is 32768 Hz, the number of RTCCLK pulses added during a 32-second window is calculated as follows: (512 CALP) - CALM. Refer to ..

Allowed values:
0: NoChange: No RTCCLK pulses are added
1: IncreaseFreq: One RTCCLK pulse is effectively inserted every 2^11 pulses (frequency increased by 488.5 ppm)

SHIFTR

RTC shift control register

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

2/2 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))). 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..

Allowed values: 0x0-0x7fff

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..

Allowed values:
1: Add1: Add one second to the clock/calendar

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
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.

Allowed values: 0x0-0xf

ST

Bits 4-6: Second tens in BCD format.

Allowed values: 0x0-0x7

MNU

Bits 8-11: Minute units in BCD format.

Allowed values: 0x0-0xf

MNT

Bits 12-14: Minute tens in BCD format.

Allowed values: 0x0-0x7

HU

Bits 16-19: Hour units in BCD format.

Allowed values: 0x0-0xf

HT

Bits 20-21: Hour tens in BCD format.

Allowed values: 0x0-0x3

PM

Bit 22: AM/PM notation.

Allowed values:
0: AM: AM or 24-hour format
1: PM: PM

TSDR

RTC timestamp date register

Offset: 0x34, size: 32, reset: 0x00002101, access: Unspecified

7/7 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.

Allowed values: 0x0-0xf

DT

Bits 4-5: Date tens in BCD format.

Allowed values: 0x0-0x3

MU

Bits 8-11: Month units in BCD format.

Allowed values: 0x0-0xf

MT

Bit 12: Month tens in BCD format.

Allowed values: 0x0-0x1

WDU

Bits 13-15: Week day units ....

Allowed values: 0x1-0x7

YU

Bits 16-19: Year units in BCD format.

Allowed values: 0x0-0xf

YT

Bits 20-23: Year tens in BCD format.

Allowed values: 0x0-0xf

TSSSR

RTC timestamp sub second 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
SS
r
Toggle fields

SS

Bits 0-15: Sub second value 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) Note: 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..

Allowed values: 0x0-0xffff

ALRMAR

Alarm register

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

14/14 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.

Allowed values: 0x0-0xf

ST

Bits 4-6: Second tens in BCD format.

Allowed values: 0x0-0x7

MSK1

Bit 7: Alarm seconds mask.

Allowed values:
0: Mask: Alarm set if the date/day match
1: NotMask: Date/day don’t care in Alarm comparison

MNU

Bits 8-11: Minute units in BCD format.

Allowed values: 0x0-0xf

MNT

Bits 12-14: Minute tens in BCD format.

Allowed values: 0x0-0x7

MSK2

Bit 15: Alarm minutes mask.

Allowed values:
0: Mask: Alarm set if the date/day match
1: NotMask: Date/day don’t care in Alarm comparison

HU

Bits 16-19: Hour units in BCD format.

Allowed values: 0x0-0xf

HT

Bits 20-21: Hour tens in BCD format.

Allowed values: 0x0-0x3

PM

Bit 22: AM/PM notation.

Allowed values:
0: AM: AM or 24-hour format
1: PM: PM

MSK3

Bit 23: Alarm hours mask.

Allowed values:
0: Mask: Alarm set if the date/day match
1: NotMask: Date/day don’t care in Alarm comparison

DU

Bits 24-27: Date units or day in BCD format.

Allowed values: 0x0-0xf

DT

Bits 28-29: Date tens in BCD format.

Allowed values: 0x0-0x3

WDSEL

Bit 30: Week day selection.

Allowed values:
0: DateUnits: DU[3:0] represents the date units
1: WeekDay: DU[3:0] represents the week day. DT[1:0] is don’t care.

MSK4

Bit 31: Alarm date mask.

Allowed values:
0: Mask: Alarm set if the date/day match
1: NotMask: Date/day don’t care in Alarm comparison

ALRMASSR

Alarm sub-second register

Offset: 0x44, 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
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: Sub seconds 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..

Allowed values: 0x0-0x7fff

MASKSS

Bits 24-27: Mask the most-significant bits starting at this bit 2: SS[14:2] are dont care in alarm A comparison. Only SS[1:0] are compared. 3: SS[14:3] are dont care in alarm A comparison. Only SS[2:0] are compared. ... 12: SS[14:12] are dont care in alarm A comparison. SS[11:0] are compared. 13: SS[14:13] are dont care in alarm A comparison. SS[12:0] are compared. 14: SS[14] is dont care in alarm A comparison. SS[13:0] are compared. 15: All 15 SS bits are compared and must match to activate alarm. The overflow bits of the synchronous counter (bits 15) is never compared. This bit can be different from 0 only after a shift operation. Note: The overflow bits of the synchronous counter (bits 15) is never compared. This bit can be different from 0 only after a shift operation..

SR

RTC status register

Offset: 0x50, 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
TSOVF
r
TSF
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)..

Allowed values:
1: Match: This flag is set by hardware when the time/date registers (RTC_TR and RTC_DR) match the Alarm register (RTC_ALRxBR)

TSF

Bit 3: Timestamp flag This flag is set by hardware when a timestamp event occurs..

Allowed values:
1: TimestampEvent: This flag is set by hardware when a time-stamp event occurs

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..

Allowed values:
1: Overflow: This flag is set by hardware when a time-stamp event occurs while TSF is already set

MISR

RTC masked interrupt status register

Offset: 0x54, 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
TSOVMF
r
TSMF
r
ALRAMF
r
Toggle fields

ALRAMF

Bit 0: Alarm A masked flag This flag is set by hardware when the alarm A interrupt occurs..

Allowed values:
1: Match: This flag is set by hardware when the time/date registers (RTC_TR and RTC_DR) match the Alarm register (RTC_ALRMxR)

TSMF

Bit 3: Timestamp masked flag This flag is set by hardware when a timestamp interrupt occurs..

Allowed values:
1: TimestampEvent: This flag is set by hardware when a time-stamp event occurs

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..

Allowed values:
1: Overflow: This flag is set by hardware when a time-stamp event occurs while TSF is already set

SCR

RTC status clear register

Offset: 0x5c, 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
CTSOVF
w
CTSF
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..

Allowed values:
1: Clear: Clear interrupt flag

CTSF

Bit 3: Clear timestamp flag Writing 1 in this bit clears the TSOVF bit in the RTC_SR register..

Allowed values:
1: Clear: Clear interrupt flag

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..

Allowed values:
1: Clear: Clear interrupt flag

SPI1

0x40013000: Serial peripheral interface

54/54 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) CR1
0x4 (16-bit) CR2
0x8 (16-bit) SR
0xc (16-bit) DR
0xc (8-bit) DR8
0x10 (16-bit) CRCPR
0x14 (16-bit) RXCRCR
0x18 (16-bit) TXCRCR
0x1c (16-bit) I2SCFGR
0x20 (16-bit) I2SPR
Toggle registers

CR1

SPI control register 1

Offset: 0x0, size: 16, reset: 0x00000000, access: Unspecified

14/14 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. This bit is not used in I2S mode and SPI TI mode except the case when CRC is applied at TI mode..

Allowed values:
0: FirstEdge: The first clock transition is the first data capture edge
1: SecondEdge: The second clock transition is the first data capture edge

CPOL

Bit 1: Clock polarity Note: This bit should not be changed when communication is ongoing. This bit is not used in I2S mode and SPI TI mode except the case when CRC is applied at TI mode..

Allowed values:
0: IdleLow: CK to 0 when idle
1: IdleHigh: CK to 1 when idle

MSTR

Bit 2: Master selection Note: This bit should not be changed when communication is ongoing. This bit is not used in I2S mode..

Allowed values:
0: Slave: Slave configuration
1: Master: Master configuration

BR

Bits 3-5: Baud rate control Note: These bits should not be changed when communication is ongoing. These bits are not used in I2S mode..

Allowed values:
0: Div2: f_PCLK / 2
1: Div4: f_PCLK / 4
2: Div8: f_PCLK / 8
3: Div16: f_PCLK / 16
4: Div32: f_PCLK / 32
5: Div64: f_PCLK / 64
6: Div128: f_PCLK / 128
7: Div256: f_PCLK / 256

SPE

Bit 6: SPI enable Note: When disabling the SPI, follow the procedure described in SPI on page 1349. This bit is not used in I2S mode..

Allowed values:
0: Disabled: Peripheral disabled
1: Enabled: Peripheral enabled

LSBFIRST

Bit 7: Frame format Note: 1. This bit should not be changed when communication is ongoing. 2. This bit is not used in I2S mode and SPI TI mode..

Allowed values:
0: MSBFirst: Data is transmitted/received with the MSB first
1: LSBFirst: Data is transmitted/received with the LSB first

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 I2S mode and SPI TI mode..

Allowed values:
0: SlaveSelected: 0 is forced onto the NSS pin and the I/O value of the NSS pin is ignored
1: SlaveNotSelected: 1 is forced onto the NSS pin and the I/O value of the NSS pin is ignored

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 I2S mode and SPI TI mode..

Allowed values:
0: Disabled: Software slave management disabled
1: Enabled: Software slave management enabled

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. Note: This bit is not used in I2S mode..

Allowed values:
0: FullDuplex: Full duplex (Transmit and receive)
1: OutputDisabled: Output disabled (Receive-only mode)

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. This bit is not used in I2S mode..

Allowed values:
0: EightBit: 8-bit CRC length
1: SixteenBit: 16-bit CRC length

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. This bit is not used in I2S mode..

Allowed values:
0: TxBuffer: Next transmit value is from Tx buffer
1: CRC: Next transmit value is from Tx CRC register

CRCEN

Bit 13: Hardware CRC calculation enable Note: This bit should be written only when SPI is disabled (SPE = 0) for correct operation. This bit is not used in I2S mode..

Allowed values:
0: Disabled: CRC calculation disabled
1: Enabled: CRC calculation enabled

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. This bit is not used in I2S mode..

Allowed values:
0: OutputDisabled: Output disabled (receive-only mode)
1: OutputEnabled: Output enabled (transmit-only mode)

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. Note: This bit is not used in I2S mode..

Allowed values:
0: Unidirectional: 2-line unidirectional data mode selected
1: Bidirectional: 1-line bidirectional data mode selected

CR2

SPI control register 2

Offset: 0x4, size: 16, reset: 0x00000700, access: Unspecified

12/12 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..

Allowed values:
0: Disabled: Rx buffer DMA disabled
1: Enabled: Rx buffer DMA enabled

TXDMAEN

Bit 1: Tx buffer DMA enable When this bit is set, a DMA request is generated whenever the TXE flag is set..

Allowed values:
0: Disabled: Tx buffer DMA disabled
1: Enabled: Tx buffer DMA enabled

SSOE

Bit 2: SS output enable Note: This bit is not used in I2S mode and SPI TI mode..

Allowed values:
0: Disabled: SS output is disabled in master mode
1: Enabled: SS output is enabled in master 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). 2. This bit is not used in I2S mode and SPI TI mode..

Allowed values:
0: NoPulse: No NSS pulse
1: PulseGenerated: NSS pulse generated

FRF

Bit 4: Frame format 1 SPI TI mode Note: This bit must be written only when the SPI is disabled (SPE=0). This bit is not used in I2S mode..

Allowed values:
0: Motorola: SPI Motorola mode
1: TI: SPI TI mode

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 and UDR, OVR, and FRE in I2S mode)..

Allowed values:
0: Masked: Error interrupt masked
1: NotMasked: Error interrupt not masked

RXNEIE

Bit 6: RX buffer not empty interrupt enable.

Allowed values:
0: Masked: RXE interrupt masked
1: NotMasked: RXE interrupt not masked

TXEIE

Bit 7: Tx buffer empty interrupt enable.

Allowed values:
0: Masked: TXE interrupt masked
1: NotMasked: TXE interrupt not masked

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) Note: These bits are not used in I2S mode..

Allowed values:
3: FourBit: 4-bit
4: FiveBit: 5-bit
5: SixBit: 6-bit
6: SevenBit: 7-bit
7: EightBit: 8-bit
8: NineBit: 9-bit
9: TenBit: 10-bit
10: ElevenBit: 11-bit
11: TwelveBit: 12-bit
12: ThirteenBit: 13-bit
13: FourteenBit: 14-bit
14: FifteenBit: 15-bit
15: SixteenBit: 16-bit

FRXTH

Bit 12: FIFO reception threshold This bit is used to set the threshold of the RXFIFO that triggers an RXNE event Note: This bit is not used in I2S mode..

Allowed values:
0: Half: RXNE event is generated if the FIFO level is greater than or equal to 1/2 (16-bit)
1: Quarter: RXNE event is generated if the FIFO level is greater than or equal to 1/4 (8-bit)

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 if the CRCEN bit is set. This bit is not used in IS mode..

Allowed values:
0: Even: Number of data to transfer for receive is even
1: Odd: Number of data to transfer for receive is odd

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 if the CRCEN bit is set. This bit is not used in IS mode..

Allowed values:
0: Even: Number of data to transfer for transmit is even
1: Odd: Number of data to transfer for transmit is odd

SR

SPI status register

Offset: 0x8, size: 16, reset: 0x00000002, access: Unspecified

11/11 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
r/w0c
UDR
r
CHSIDE
r
TXE
r
RXNE
r
Toggle fields

RXNE

Bit 0: Receive buffer not empty.

Allowed values:
0: Empty: Rx buffer empty
1: NotEmpty: Rx buffer not empty

TXE

Bit 1: Transmit buffer empty.

Allowed values:
0: NotEmpty: Tx buffer not empty
1: Empty: Tx buffer empty

CHSIDE

Bit 2: Channel side Note: This bit is not used in SPI mode. It has no significance in PCM mode..

Allowed values:
0: Left: Channel left has to be transmitted or has been received
1: Right: Channel right has to be transmitted or has been received

UDR

Bit 3: Underrun flag This flag is set by hardware and reset by a software sequence. Refer to page 1385 for the software sequence. Note: This bit is not used in SPI mode..

Allowed values:
0: NoUnderrun: No underrun occurred
1: Underrun: Underrun occurred

CRCERR

Bit 4: CRC error flag Note: This flag is set by hardware and cleared by software writing 0. This bit is not used in I2S mode..

Allowed values:
0: Match: CRC value received matches the SPIx_RXCRCR value
1: NoMatch: CRC value received does not match the SPIx_RXCRCR value

MODF

Bit 5: Mode fault This flag is set by hardware and reset by a software sequence. Refer to (MODF) on page 1359 for the software sequence. Note: This bit is not used in I2S mode..

Allowed values:
0: NoFault: No mode fault occurred
1: Fault: Mode fault occurred

OVR

Bit 6: Overrun flag This flag is set by hardware and reset by a software sequence. Refer to page 1385 for the software sequence..

Allowed values:
0: NoOverrun: No overrun occurred
1: Overrun: Overrun occurred

BSY

Bit 7: Busy flag This flag is set and cleared by hardware. Note: The BSY flag must be used with caution: refer to and ..

Allowed values:
0: NotBusy: SPI not busy
1: Busy: SPI busy

FRE

Bit 8: Frame format error This flag is used for SPI in TI slave mode and I2S slave mode. Refer to error flags and . This flag is set by hardware and reset when SPI_SR is read by software..

Allowed values:
0: NoError: No frame format error
1: Error: A frame format error occurred

FRLVL

Bits 9-10: FIFO reception level These bits are set and cleared by hardware. Note: These bits are not used in IS mode and in SPI receive-only mode while CRC calculation is enabled..

Allowed values:
0: Empty: Rx FIFO Empty
1: Quarter: Rx 1/4 FIFO
2: Half: Rx 1/2 FIFO
3: Full: Rx FIFO full

FTLVL

Bits 11-12: FIFO transmission level These bits are set and cleared by hardware. Note: This bit is not used in I2S mode..

Allowed values:
0: Empty: Tx FIFO Empty
1: Quarter: Tx 1/4 FIFO
2: Half: Tx 1/2 FIFO
3: Full: Tx FIFO full

DR

SPI data register

Offset: 0xc, 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
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 ). 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..

Allowed values: 0x0-0xffff

DR8

Direct 8-bit access to data register

Offset: 0xc, size: 8, reset: 0x00000000, access: read-write

1/1 fields covered.

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

DR

Bits 0-7: Data register.

Allowed values: 0x0-0xff

CRCPR

SPI CRC polynomial register

Offset: 0x10, size: 16, reset: 0x00000007, access: Unspecified

1/1 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..

Allowed values: 0x0-0xffff

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. These bits are not used in I2S mode..

Allowed values: 0x0-0xffff

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. These bits are not used in I2S mode..

Allowed values: 0x0-0xffff

I2SCFGR

SPI_I2S configuration register

Offset: 0x1c, size: 16, reset: 0x00000000, access: Unspecified

9/9 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ASTRTEN
rw
I2SMOD
rw
I2SE
rw
I2SCFG
rw
PCMSYNC
rw
I2SSTD
rw
CKPOL
rw
DATLEN
rw
CHLEN
rw
Toggle fields

CHLEN

Bit 0: Channel length (number of bits per audio channel) The bit write operation has a meaning only if DATLEN = 00 otherwise the channel length is fixed to 32-bit by hardware whatever the value filled in. Note: For correct operation, this bit should be configured when the I2S is disabled. It is not used in SPI mode..

Allowed values:
0: SixteenBit: 16-bit wide
1: ThirtyTwoBit: 32-bit wide

DATLEN

Bits 1-2: Data length to be transferred Note: For correct operation, these bits should be configured when the I2S is disabled. They are not used in SPI mode..

Allowed values:
0: SixteenBit: 16-bit data length
1: TwentyFourBit: 24-bit data length
2: ThirtyTwoBit: 32-bit data length

CKPOL

Bit 3: Inactive state clock polarity Note: For correct operation, this bit should be configured when the I2S is disabled. It is not used in SPI mode. The bit CKPOL does not affect the CK edge sensitivity used to receive or transmit the SD and WS signals..

Allowed values:
0: IdleLow: I2S clock inactive state is low level
1: IdleHigh: I2S clock inactive state is high level

I2SSTD

Bits 4-5: I2S standard selection For more details on I2S standards, refer to Note: For correct operation, these bits should be configured when the I2S is disabled. They are not used in SPI mode..

Allowed values:
0: Philips: I2S Philips standard
1: MSB: MSB justified standard
2: LSB: LSB justified standard
3: PCM: PCM standard

PCMSYNC

Bit 7: PCM frame synchronization Note: This bit has a meaning only if I2SSTD = 11 (PCM standard is used). It is not used in SPI mode..

Allowed values:
0: Short: Short frame synchronisation
1: Long: Long frame synchronisation

I2SCFG

Bits 8-9: I2S configuration mode Note: These bits should be configured when the I2S is disabled. They are not used in SPI mode..

Allowed values:
0: SlaveTx: Slave - transmit
1: SlaveRx: Slave - receive
2: MasterTx: Master - transmit
3: MasterRx: Master - receive

I2SE

Bit 10: I2S enable Note: This bit is not used in SPI mode..

Allowed values:
0: Disabled: I2S peripheral is disabled
1: Enabled: I2S peripheral is enabled

I2SMOD

Bit 11: I2S mode selection Note: This bit should be configured when the SPI is disabled..

Allowed values:
0: SPIMode: SPI mode is selected
1: I2SMode: I2S mode is selected

ASTRTEN

Bit 12: Asynchronous start enable. When the I2S is enabled in slave mode, the hardware starts the transfer when the I2S clock is received and an appropriate transition is detected on the WS signal. When the I2S is enabled in slave mode, the hardware starts the transfer when the I2S clock is received and the appropriate level is detected on the WS signal. Note: The appropriate transition is a falling edge on WS signal when I2S Philips Standard is used, or a rising edge for other standards. The appropriate level is a low level on WS signal when I2S Philips Standard is used, or a high level for other standards. Please refer to for additional information..

Allowed values:
0: AsyncStartDisabled: Asynchronous start disabled
1: AsyncStartEnabled: Asynchronous start enabled

I2SPR

SPI_I2S prescaler register

Offset: 0x20, size: 16, reset: 0x00000002, access: Unspecified

3/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MCKOE
rw
ODD
rw
I2SDIV
rw
Toggle fields

I2SDIV

Bits 0-7: I2S linear prescaler I2SDIV [7:0] = 0 or I2SDIV [7:0] = 1 are forbidden values. Refer to . Note: These bits should be configured when the I2S is disabled. They are used only when the I2S is in master mode. They are not used in SPI mode..

Allowed values: 0x2-0xff

ODD

Bit 8: Odd factor for the prescaler Refer to . Note: This bit should be configured when the I2S is disabled. It is used only when the I2S is in master mode. It is not used in SPI mode..

Allowed values:
0: Even: Real divider value is I2SDIV * 2
1: Odd: Real divider value is (I2SDIV * 2) + 1

MCKOE

Bit 9: Master clock output enable Note: This bit should be configured when the I2S is disabled. It is used only when the I2S is in master mode. It is not used in SPI mode..

Allowed values:
0: Disabled: Master clock output is disabled
1: Enabled: Master clock output is enabled

SYSCFG

0x40010000: SYSCFG register block

38/58 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 CFGR1
0x18 CFGR2
0x3c CFGR3
0x80 ITLINE0
0x88 ITLINE2
0x8c ITLINE3
0x90 ITLINE4
0x94 ITLINE5
0x98 ITLINE6
0x9c ITLINE7
0xa4 ITLINE9
0xa8 ITLINE10
0xac ITLINE11
0xb0 ITLINE12
0xb4 ITLINE13
0xb8 ITLINE14
0xc0 ITLINE16
0xcc ITLINE19
0xd4 ITLINE21
0xd8 ITLINE22
0xdc ITLINE23
0xe4 ITLINE25
0xec ITLINE27
0xf0 ITLINE28
Toggle registers

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
I2C_PC14_FMP
rw
I2C_PA10_FMP
rw
I2C_PA9_FMP
rw
I2C1_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
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 This bitfield controlled by software selects the memory internally mapped at the address 0x0000 0000. Its reset value is determined by the boot mode configuration. Refer to for more details. x0: Main Flash memory.

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:.

I2C_PB6_FMP

Bit 16: Fast Mode Plus (FM+) enable for PB6 This bit is set and cleared by software. It enables I2C FM+ driving capability on PB6 I/O port. With this bit in disable state, the I2C FM+ driving capability on this I/O port can be enabled through one of I2Cx_FMP bits. When I2C FM+ is enabled, the speed control is ignored..

I2C_PB7_FMP

Bit 17: Fast Mode Plus (FM+) enable for PB7 This bit is set and cleared by software. It enables I2C FM+ driving capability on PB7 I/O port. With this bit in disable state, the I2C FM+ driving capability on this I/O port can be enabled through one of I2Cx_FMP bits. When I2C FM+ is enabled, the speed control is ignored..

I2C_PB8_FMP

Bit 18: Fast Mode Plus (FM+) enable for PB8 This bit is set and cleared by software. It enables I2C FM+ driving capability on PB8 I/O port. With this bit in disable state, the I2C FM+ driving capability on this I/O port can be enabled through one of I2Cx_FMP bits. When I2C FM+ is enabled, the speed control is ignored..

I2C_PB9_FMP

Bit 19: Fast Mode Plus (FM+) enable for PB9 This bit is set and cleared by software. It enables I2C FM+ driving capability on PB9 I/O port. With this bit in disable state, the I2C FM+ driving capability on this I/O port can be enabled through one of I2Cx_FMP bits. When I2C FM+ is enabled, the speed control is ignored..

I2C1_FMP

Bit 20: Fast Mode Plus (FM+) enable for I2C1 This bit is set and cleared by software. It enables I2C FM+ driving capability on I/O ports configured as I2C1 through GPIOx_AFR registers. With this bit in disable state, the I2C FM+ driving capability on I/O ports configured as I2C1 can be enabled through their corresponding I2Cx_FMP bit. When I2C FM+ is enabled, the speed control is ignored..

I2C_PA9_FMP

Bit 22: Fast Mode Plus (FM+) enable for PA9 This bit is set and cleared by software. It enables I2C FM+ driving capability on PA9 I/O port. With this bit in disable state, the I2C FM+ driving capability on this I/O port can be enabled through one of I2Cx_FMP bits. When I2C FM+ is enabled, the speed control is ignored..

I2C_PA10_FMP

Bit 23: Fast Mode Plus (FM+) enable for PA10 This bit is set and cleared by software. It enables I2C FM+ driving capability on PA10 I/O port. With this bit in disable state, the I2C FM+ driving capability on this I/O port can be enabled through one of I2Cx_FMP bits. When I2C FM+ is enabled, the speed control is ignored..

I2C_PC14_FMP

Bit 24: Fast Mode Plus (FM+) enable for PC14 This bit is set and cleared by software. It enables I2C FM+ driving capability on PC14 I/O port. With this bit in disable state, the I2C FM+ driving capability on this I/O port can be enabled through one of I2Cx_FMP bits. When I2C FM+ is enabled, the speed control is ignored..

CFGR2

SYSCFG configuration register 2

Offset: 0x18, 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
LOCKUP_LOCK
rw
Toggle fields

LOCKUP_LOCK

Bit 0: Cortex<Superscript><Default Font>-M0+ LOCKUP enable This bit is set by software and cleared by system reset. When set, it enables the connection of Cortex<Superscript><Default Font>-M0+ LOCKUP (HardFault) output to the TIM1/16/17 Break input..

CFGR3

SYSCFG configuration register 3

Offset: 0x3c, 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
PINMUX5
rw
PINMUX4
rw
PINMUX3
rw
PINMUX2
rw
PINMUX1
rw
PINMUX0
rw
Toggle fields

PINMUX0

Bits 0-1: Pin GPIO multiplexer 0 This bit is set by software and cleared by system reset. It assigns a GPIO to a pin. 1x: Reserved Pin F2 of WLCSP14 package GPIO assignment 1x: Reserved.

PINMUX1

Bits 2-3: Pin GPIO multiplexer 1 This bit is set by software and cleared by system reset. It assigns a GPIO to a pin. 1x: Reserved.

PINMUX2

Bits 4-5: Pin GPIO multiplexer 2 This bit is set by software and cleared by system reset. It assigns a GPIO to a pin. 1x: Reserved 1x: Reserved.

PINMUX3

Bits 6-7: Pin GPIO multiplexer 3 This bit is set by software and cleared by system reset. It assigns a GPIO to a pin. 1x: Reserved.

PINMUX4

Bits 8-9: Pin GPIO multiplexer 4 This bit is set by software and cleared by system reset. It assigns a GPIO to a pin. 1x: Reserved 1x: Reserved.

PINMUX5

Bits 10-11: Pin GPIO multiplexer 5 This bit is set by software and cleared by system reset. It assigns a GPIO to a pin. 1x: Reserved.

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.

ITLINE2

SYSCFG interrupt line 2 status register

Offset: 0x88, 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
RTC
r
Toggle fields

RTC

Bit 1: RTC interrupt request pending (EXTI line 19).

ITLINE3

SYSCFG interrupt line 3 status register

Offset: 0x8c, 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
FLASH_ITF
r
Toggle fields

FLASH_ITF

Bit 1: Flash interface interrupt request pending.

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.

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.

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.

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.

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 1interrupt request pending.

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.

ITLINE11

SYSCFG interrupt line 11 status register

Offset: 0xac, 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
DMAMUX
r
Toggle fields

DMAMUX

Bit 0: DMAMUX interrupt request pending.

ITLINE12

SYSCFG interrupt line 12 status register

Offset: 0xb0, 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
ADC
r
Toggle fields

ADC

Bit 0: ADC interrupt request pending.

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.

ITLINE14

SYSCFG interrupt line 14 status register

Offset: 0xb8, 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
TIM1_CC
r
Toggle fields

TIM1_CC

Bit 0: Timer 1 capture compare interrupt request pending.

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.

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
TIM14
r
Toggle fields

TIM14

Bit 0: Timer 14 interrupt request pending.

ITLINE21

SYSCFG interrupt line 21 status register

Offset: 0xd4, 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.

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
TIM17
r
Toggle fields

TIM17

Bit 0: Timer 17 interrupt request pending.

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, combined with EXTI line 23.

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.

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.

ITLINE28

SYSCFG interrupt line 28 status register

Offset: 0xf0, 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
USART2
r
Toggle fields

USART2

Bit 0: USART2 interrupt request pending (EXTI line 26).

TIM1

0x40012c00: Advanced-control timer

144/181 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) CR1
0x4 CR2
0x8 SMCR
0xc (16-bit) DIER
0x10 SR
0x14 (16-bit) EGR
0x18 CCMR1_Input
0x18 CCMR1_Output
0x1c CCMR2_Input
0x1c CCMR2_Output
0x20 CCER
0x24 CNT
0x28 (16-bit) PSC
0x2c (16-bit) ARR
0x30 (16-bit) RCR
0x34 (16-bit) CCR[1]
0x38 (16-bit) CCR[2]
0x3c (16-bit) CCR[3]
0x40 (16-bit) CCR[4]
0x44 BDTR
0x48 (16-bit) DCR
0x4c DMAR
0x54 CCMR3
0x58 CCR5
0x5c (16-bit) CCR6
0x60 AF1
0x64 AF2
0x68 TISEL
Toggle registers

CR1

TIM1 control register 1

Offset: 0x0, size: 16, reset: 0x00000000, access: Unspecified

8/9 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..

Allowed values:
0: Disabled: Counter disabled
1: Enabled: Counter enabled

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..

Allowed values:
0: Enabled: Update event enabled
1: Disabled: Update event disabled

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.

Allowed values:
0: AnyEvent: Any of counter overflow/underflow, setting UG, or update through slave mode, generates an update interrupt or DMA request
1: CounterOnly: Only counter overflow/underflow generates an update interrupt or DMA request

OPM

Bit 3: One pulse mode.

Allowed values:
0: Disabled: Counter is not stopped at update event
1: Enabled: Counter stops counting at the next update event (clearing the CEN bit)

DIR

Bit 4: Direction Note: This bit is read only when the timer is configured in Center-aligned mode or Encoder mode..

Allowed values:
0: Up: Counter used as upcounter
1: Down: Counter used as downcounter

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.

Allowed values:
0: EdgeAligned: The counter counts up or down depending on the direction bit
1: CenterAligned1: The counter counts up and down alternatively. Output compare interrupt flags are set only when the counter is counting down.
2: CenterAligned2: The counter counts up and down alternatively. Output compare interrupt flags are set only when the counter is counting up.
3: CenterAligned3: The counter counts up and down alternatively. Output compare interrupt flags are set both when the counter is counting up or down.

ARPE

Bit 7: Auto-reload preload enable.

Allowed values:
0: Disabled: TIMx_APRR register is not buffered
1: Enabled: TIMx_APRR register is buffered

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 (tDTS)used by the dead-time generators and the digital filters (ETR, TIx): Note: tDTS = 1/fDTS, tCK_INT = 1/fCK_INT..

Allowed values:
0: Div1: t_DTS = t_CK_INT
1: Div2: t_DTS = 2 × t_CK_INT
2: Div4: t_DTS = 4 × t_CK_INT

UIFREMAP

Bit 11: UIF status bit remapping.

CR2

TIM1 control register 2

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

13/15 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MMS2
rw
OIS[6]
rw
OIS[5]
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OIS[4]
rw
OIS[3]N
rw
OIS[3]
rw
OIS[2]N
rw
OIS[2]
rw
OIS[1]N
rw
OIS[1]
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..

Allowed values:
0: NotPreloaded: CCxE, CCxNE and OCxM bits are not preloaded
1: Preloaded: CCxE, CCxNE and OCxM bits are preloaded

CCUS

Bit 2: Capture/compare control update selection Note: This bit acts only on channels that have a complementary output..

Allowed values:
0: Sw: When capture/compare control bits are preloaded (CCPC=1), they are updated by setting the COMG bit only
1: SwOrEdge: When capture/compare control bits are preloaded (CCPC=1), they are updated by setting the COMG bit or when an rising edge occurs on TRGI

CCDS

Bit 3: Capture/compare DMA selection.

Allowed values:
0: OnCompare: CCx DMA request sent when CCx event occurs
1: OnUpdate: CCx DMA request sent when update event occurs

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.

Allowed values:
0: Normal: The TIMx_CH1 pin is connected to TI1 input
1: XOR: The TIMx_CH1, CH2, CH3 pins are connected to TI1 input

OIS[1]

Bit 8: Output Idle state (OC1 output).

Allowed values:
0: Reset: OCx=0 (after a dead-time if OCx(N) is implemented) when MOE=0
1: Set: OCx=1 (after a dead-time if OCx(N) is implemented) when MOE=0

OIS[1]N

Bit 9: Output Idle state (OC1N output).

Allowed values:
0: Reset: OCxN=0 after a dead-time when MOE=0
1: Set: OCxN=1 after a dead-time when MOE=0

OIS[2]

Bit 10: Output Idle state (OC2 output).

Allowed values:
0: Reset: OCx=0 (after a dead-time if OCx(N) is implemented) when MOE=0
1: Set: OCx=1 (after a dead-time if OCx(N) is implemented) when MOE=0

OIS[2]N

Bit 11: Output Idle state (OC2N output).

Allowed values:
0: Reset: OCxN=0 after a dead-time when MOE=0
1: Set: OCxN=1 after a dead-time when MOE=0

OIS[3]

Bit 12: Output Idle state (OC3 output).

Allowed values:
0: Reset: OCx=0 (after a dead-time if OCx(N) is implemented) when MOE=0
1: Set: OCx=1 (after a dead-time if OCx(N) is implemented) when MOE=0

OIS[3]N

Bit 13: Output Idle state (OC3N output).

Allowed values:
0: Reset: OCxN=0 after a dead-time when MOE=0
1: Set: OCxN=1 after a dead-time when MOE=0

OIS[4]

Bit 14: Output Idle state (OC4 output).

Allowed values:
0: Reset: OCx=0 (after a dead-time if OCx(N) is implemented) when MOE=0
1: Set: OCx=1 (after a dead-time if OCx(N) is implemented) when MOE=0

OIS[5]

Bit 16: Output Idle state (OC5 output).

Allowed values:
0: Reset: OCx=0 (after a dead-time if OCx(N) is implemented) when MOE=0
1: Set: OCx=1 (after a dead-time if OCx(N) is implemented) when MOE=0

OIS[6]

Bit 18: Output Idle state (OC6 output).

Allowed values:
0: Reset: OCx=0 (after a dead-time if OCx(N) is implemented) when MOE=0
1: Set: OCx=1 (after a dead-time if OCx(N) is implemented) when MOE=0

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..

SMCR

TIM1 slave mode control register

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

5/10 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TS2
rw
SMS2
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
TS1
rw
OCCS
rw
SMS1
rw
Toggle fields

SMS1

Bits 0-2: 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. 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..

TS1

Bits 4-6: Trigger selection This bit-field selects the trigger input to be used to synchronize the counter. Others: Reserved See 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.

Allowed values:
0: NoSync: No action
1: Sync: The effect of an event on the trigger input (TRGI) is delayed to allow a perfect synchronization between the current timer and its slaves (through TRGO). It is useful if we want to synchronize several timers on a single external event.

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:.

Allowed values:
0: NoFilter: No filter, sampling is done at fDTS
1: FCK_INT_N2: fSAMPLING=fCK_INT, N=2
2: FCK_INT_N4: fSAMPLING=fCK_INT, N=4
3: FCK_INT_N8: fSAMPLING=fCK_INT, N=8
4: FDTS_Div2_N6: fSAMPLING=fDTS/2, N=6
5: FDTS_Div2_N8: fSAMPLING=fDTS/2, N=8
6: FDTS_Div4_N6: fSAMPLING=fDTS/4, N=6
7: FDTS_Div4_N8: fSAMPLING=fDTS/4, N=8
8: FDTS_Div8_N6: fSAMPLING=fDTS/8, N=6
9: FDTS_Div8_N8: fSAMPLING=fDTS/8, N=8
10: FDTS_Div16_N5: fSAMPLING=fDTS/16, N=5
11: FDTS_Div16_N6: fSAMPLING=fDTS/16, N=6
12: FDTS_Div16_N8: fSAMPLING=fDTS/16, N=8
13: FDTS_Div32_N5: fSAMPLING=fDTS/32, N=5
14: FDTS_Div32_N6: fSAMPLING=fDTS/32, N=6
15: FDTS_Div32_N8: fSAMPLING=fDTS/32, N=8

ETPS

Bits 12-13: External trigger prescaler External trigger signal ETRP frequency must be at most 1/4 of fCK_INT frequency. A prescaler can be enabled to reduce ETRP frequency. It is useful when inputting fast external clocks..

Allowed values:
0: Div1: Prescaler OFF
1: Div2: ETRP frequency divided by 2
2: Div4: ETRP frequency divided by 4
3: Div8: ETRP frequency divided by 8

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). If external clock mode 1 and external clock mode 2 are enabled at the same time, the external clock input is ETRF..

Allowed values:
0: Disabled: External clock mode 2 disabled
1: Enabled: External clock mode 2 enabled. The counter is clocked by any active edge on the ETRF signal.

ETP

Bit 15: External trigger polarity This bit selects whether ETR or ETR is used for trigger operations.

Allowed values:
0: NotInverted: ETR is noninverted, active at high level or rising edge
1: Inverted: ETR is inverted, active at low level or falling edge

SMS2

Bit 16: 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. 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..

TS2

Bits 20-21: Trigger selection This bit-field selects the trigger input to be used to synchronize the counter. Others: Reserved See 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..

DIER

TIM1 DMA/interrupt enable register

Offset: 0xc, size: 16, reset: 0x00000000, access: Unspecified

15/15 fields covered.

Toggle fields

UIE

Bit 0: Update interrupt enable.

Allowed values:
0: Disabled: Update interrupt disabled
1: Enabled: Update interrupt enabled

CC[1]IE

Bit 1: Capture/Compare 1 interrupt enable.

Allowed values:
0: Disabled: CCx interrupt disabled
1: Enabled: CCx interrupt enabled

CC[2]IE

Bit 2: Capture/Compare 2 interrupt enable.

Allowed values:
0: Disabled: CCx interrupt disabled
1: Enabled: CCx interrupt enabled

CC[3]IE

Bit 3: Capture/Compare 3 interrupt enable.

Allowed values:
0: Disabled: CCx interrupt disabled
1: Enabled: CCx interrupt enabled

CC[4]IE

Bit 4: Capture/Compare 4 interrupt enable.

Allowed values:
0: Disabled: CCx interrupt disabled
1: Enabled: CCx interrupt enabled

COMIE

Bit 5: COM interrupt enable.

Allowed values:
0: Disabled: COM interrupt disabled
1: Enabled: COM interrupt enabled

TIE

Bit 6: Trigger interrupt enable.

Allowed values:
0: Disabled: Trigger interrupt disabled
1: Enabled: Trigger interrupt enabled

BIE

Bit 7: Break interrupt enable.

Allowed values:
0: Disabled: Break interrupt disabled
1: Enabled: Break interrupt enabled

UDE

Bit 8: Update DMA request enable.

Allowed values:
0: Disabled: Update DMA request disabled
1: Enabled: Update DMA request enabled

CC[1]DE

Bit 9: Capture/Compare 1 DMA request enable.

Allowed values:
0: Disabled: CCx DMA request disabled
1: Enabled: CCx DMA request enabled

CC[2]DE

Bit 10: Capture/Compare 2 DMA request enable.

Allowed values:
0: Disabled: CCx DMA request disabled
1: Enabled: CCx DMA request enabled

CC[3]DE

Bit 11: Capture/Compare 3 DMA request enable.

Allowed values:
0: Disabled: CCx DMA request disabled
1: Enabled: CCx DMA request enabled

CC[4]DE

Bit 12: Capture/Compare 4 DMA request enable.

Allowed values:
0: Disabled: CCx DMA request disabled
1: Enabled: CCx DMA request enabled

COMDE

Bit 13: COM DMA request enable.

Allowed values:
0: Disabled: COM DMA request disabled
1: Enabled: COM DMA request enabled

TDE

Bit 14: Trigger DMA request enable.

Allowed values:
0: Disabled: Trigger DMA request disabled
1: Enabled: Trigger DMA request enabled

SR

TIM1 status register

Offset: 0x10, 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
CC6IF
r/w0c
CC5IF
r/w0c
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SBIF
r/w0c
CC[4]OF
r/w0c
CC[3]OF
r/w0c
CC[2]OF
r/w0c
CC[1]OF
r/w0c
B2IF
r/w0c
BIF
r/w0c
TIF
r/w0c
COMIF
r/w0c
CC[4]IF
r/w0c
CC[3]IF
r/w0c
CC[2]IF
r/w0c
CC[1]IF
r/w0c
UIF
r/w0c
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 control register (TIM1_SMCRTIMx_SMCR)N/A), if URS=0 and UDIS=0 in the TIMx_CR1 register..

Allowed values:
0: NoUpdateOccurred: No update occurred
1: UpdatePending: Update interrupt pending

CC[1]IF

Bit 1: Capture/compare 1 interrupt flag.

Allowed values:
0: NoMatch: No campture/compare has been detected
1: Match: If CC1 is an output: The content of the counter TIMx_CNT matches the content of the TIMx_CCR1 register. If CC1 is an input: The counter value has been captured in TIMx_CCR1 register.

CC[2]IF

Bit 2: Capture/compare 2 interrupt flag.

Allowed values:
0: NoMatch: No campture/compare has been detected
1: Match: If CC1 is an output: The content of the counter TIMx_CNT matches the content of the TIMx_CCR1 register. If CC1 is an input: The counter value has been captured in TIMx_CCR1 register.

CC[3]IF

Bit 3: Capture/compare 3 interrupt flag.

Allowed values:
0: NoMatch: No campture/compare has been detected
1: Match: If CC1 is an output: The content of the counter TIMx_CNT matches the content of the TIMx_CCR1 register. If CC1 is an input: The counter value has been captured in TIMx_CCR1 register.

CC[4]IF

Bit 4: Capture/compare 4 interrupt flag.

Allowed values:
0: NoMatch: No campture/compare has been detected
1: Match: If CC1 is an output: The content of the counter TIMx_CNT matches the content of the TIMx_CCR1 register. If CC1 is an input: The counter value has been captured in TIMx_CCR1 register.

COMIF

Bit 5: COM interrupt flag.

Allowed values:
0: NoCOM: No COM event occurred
1: COM: COM interrupt pending

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..

Allowed values:
0: NoTrigger: No trigger event occurred
1: Trigger: Trigger interrupt pending

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..

Allowed values:
0: NoTrigger: No break event occurred
1: Trigger: An active level has been detected on the break input. An interrupt is generated if BIE=1 in the TIMx_DIER register

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..

Allowed values:
0: NoTrigger: No break event occurred
1: Trigger: An active level has been detected on the break 2 input. An interrupt is generated if BIE=1 in the TIMx_DIER register

CC[1]OF

Bit 9: Capture/Compare 1 overcapture flag.

Allowed values:
0: NoOvercapture: No overcapture has been detected
1: Overcapture: The counter value has been captured in TIMx_CCRx register while CCxIF flag was already set

CC[2]OF

Bit 10: Capture/Compare 2 overcapture flag.

Allowed values:
0: NoOvercapture: No overcapture has been detected
1: Overcapture: The counter value has been captured in TIMx_CCRx register while CCxIF flag was already set

CC[3]OF

Bit 11: Capture/Compare 3 overcapture flag.

Allowed values:
0: NoOvercapture: No overcapture has been detected
1: Overcapture: The counter value has been captured in TIMx_CCRx register while CCxIF flag was already set

CC[4]OF

Bit 12: Capture/Compare 4 overcapture flag.

Allowed values:
0: NoOvercapture: No overcapture has been detected
1: Overcapture: The counter value has been captured in TIMx_CCRx register while CCxIF flag was already set

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..

Allowed values:
0: NoTrigger: No break event occurred
1: Trigger: An active level has been detected on the system break input. An interrupt is generated if BIE=1 in the TIMx_DIER register

CC5IF

Bit 16: Compare 5 interrupt flag Refer to CC1IF description (Note: Channel 5 can only be configured as output).

Allowed values:
0: NoMatch: No campture/compare has been detected
1: Match: If CC1 is an output: The content of the counter TIMx_CNT matches the content of the TIMx_CCR1 register. If CC1 is an input: The counter value has been captured in TIMx_CCR1 register.

CC6IF

Bit 17: Compare 6 interrupt flag Refer to CC1IF description (Note: Channel 6 can only be configured as output).

Allowed values:
0: NoMatch: No campture/compare has been detected
1: Match: If CC1 is an output: The content of the counter TIMx_CNT matches the content of the TIMx_CCR1 register. If CC1 is an input: The counter value has been captured in TIMx_CCR1 register.

EGR

TIM1 event generation register

Offset: 0x14, size: 16, reset: 0x00000000, access: Unspecified

9/9 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
CC[4]G
w
CC[3]G
w
CC[2]G
w
CC[1]G
w
UG
w
Toggle fields

UG

Bit 0: Update generation This bit can be set by software, it is automatically cleared by hardware..

Allowed values:
1: Update: Re-initializes the timer counter and generates an update of the registers.

CC[1]G

Bit 1: Capture/compare 1 generation.

Allowed values:
1: Trigger: If CC1 is an output: CC1IF flag is set, Corresponding interrupt or DMA request is sent if enabled. If CC1 is an input: The current value of the counter is captured in TIMx_CCR1 register.

CC[2]G

Bit 2: Capture/compare 2 generation.

Allowed values:
1: Trigger: If CC1 is an output: CC1IF flag is set, Corresponding interrupt or DMA request is sent if enabled. If CC1 is an input: The current value of the counter is captured in TIMx_CCR1 register.

CC[3]G

Bit 3: Capture/compare 3 generation.

Allowed values:
1: Trigger: If CC1 is an output: CC1IF flag is set, Corresponding interrupt or DMA request is sent if enabled. If CC1 is an input: The current value of the counter is captured in TIMx_CCR1 register.

CC[4]G

Bit 4: Capture/compare 4 generation.

Allowed values:
1: Trigger: If CC1 is an output: CC1IF flag is set, Corresponding interrupt or DMA request is sent if enabled. If CC1 is an input: The current value of the counter is captured in TIMx_CCR1 register.

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..

Allowed values:
1: Trigger: When CCPC bit is set, it allows CCxE, CCxNE and OCxM bits to be updated

TG

Bit 6: Trigger generation This bit is set by software in order to generate an event, it is automatically cleared by hardware..

Allowed values:
1: Trigger: The TIF flag is set in TIMx_SR register. Related interrupt or DMA transfer can occur if enabled.

BG

Bit 7: Break generation This bit is set by software in order to generate an event, it is automatically cleared by hardware..

Allowed values:
1: Trigger: A break event is generated. MOE bit is cleared and BIF flag is set. Related interrupt or DMA transfer can occur if enabled

B2G

Bit 8: Break 2 generation This bit is set by software in order to generate an event, it is automatically cleared by hardware..

Allowed values:
1: Trigger: A break 2 event is generated. MOE bit is cleared and B2IF flag is set. Related interrupt can occur if enabled

CCMR1_Input

TIM1 capture/compare mode register 1 [alternate]

Offset: 0x18, 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
IC[2]F
rw
IC[2]PSC
rw
CC2S
rw
IC[1]F
rw
IC[1]PSC
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)..

Allowed values:
1: TI1: CC1 channel is configured as input, IC1 is mapped on TI1
2: TI2: CC1 channel is configured as input, IC1 is mapped on TI2
3: TRC: CC1 channel is configured as input, IC1 is mapped on TRC

IC[1]PSC

Bits 2-3: Input capture 1 prescaler.

Allowed values:
0: NoPrescaler: No prescaler, capture is done each time an edge is detected on the capture input
1: TwoEvents: Capture is done once every 2 events
2: FourEvents: Capture is done once every 4 events
3: EightEvents: Capture is done once every 8 events

IC[1]F

Bits 4-7: Input capture 1 filter.

Allowed values:
0: NoFilter: No filter, sampling is done at fDTS
1: FCK_INT_N2: fSAMPLING=fCK_INT, N=2
2: FCK_INT_N4: fSAMPLING=fCK_INT, N=4
3: FCK_INT_N8: fSAMPLING=fCK_INT, N=8
4: FDTS_Div2_N6: fSAMPLING=fDTS/2, N=6
5: FDTS_Div2_N8: fSAMPLING=fDTS/2, N=8
6: FDTS_Div4_N6: fSAMPLING=fDTS/4, N=6
7: FDTS_Div4_N8: fSAMPLING=fDTS/4, N=8
8: FDTS_Div8_N6: fSAMPLING=fDTS/8, N=6
9: FDTS_Div8_N8: fSAMPLING=fDTS/8, N=8
10: FDTS_Div16_N5: fSAMPLING=fDTS/16, N=5
11: FDTS_Div16_N6: fSAMPLING=fDTS/16, N=6
12: FDTS_Div16_N8: fSAMPLING=fDTS/16, N=8
13: FDTS_Div32_N5: fSAMPLING=fDTS/32, N=5
14: FDTS_Div32_N6: fSAMPLING=fDTS/32, N=6
15: FDTS_Div32_N8: fSAMPLING=fDTS/32, N=8

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)..

Allowed values:
1: TI2: CC2 channel is configured as input, IC2 is mapped on TI2
2: TI1: CC2 channel is configured as input, IC2 is mapped on TI1
3: TRC: CC2 channel is configured as input, IC2 is mapped on TRC

IC[2]PSC

Bits 10-11: Input capture 2 prescaler.

Allowed values:
0: NoPrescaler: No prescaler, capture is done each time an edge is detected on the capture input
1: TwoEvents: Capture is done once every 2 events
2: FourEvents: Capture is done once every 4 events
3: EightEvents: Capture is done once every 8 events

IC[2]F

Bits 12-15: Input capture 2 filter.

Allowed values:
0: NoFilter: No filter, sampling is done at fDTS
1: FCK_INT_N2: fSAMPLING=fCK_INT, N=2
2: FCK_INT_N4: fSAMPLING=fCK_INT, N=4
3: FCK_INT_N8: fSAMPLING=fCK_INT, N=8
4: FDTS_Div2_N6: fSAMPLING=fDTS/2, N=6
5: FDTS_Div2_N8: fSAMPLING=fDTS/2, N=8
6: FDTS_Div4_N6: fSAMPLING=fDTS/4, N=6
7: FDTS_Div4_N8: fSAMPLING=fDTS/4, N=8
8: FDTS_Div8_N6: fSAMPLING=fDTS/8, N=6
9: FDTS_Div8_N8: fSAMPLING=fDTS/8, N=8
10: FDTS_Div16_N5: fSAMPLING=fDTS/16, N=5
11: FDTS_Div16_N6: fSAMPLING=fDTS/16, N=6
12: FDTS_Div16_N8: fSAMPLING=fDTS/16, N=8
13: FDTS_Div32_N5: fSAMPLING=fDTS/32, N=5
14: FDTS_Div32_N6: fSAMPLING=fDTS/32, N=6
15: FDTS_Div32_N8: fSAMPLING=fDTS/32, N=8

CCMR1_Output

TIM1 capture/compare mode register 1 [alternate]

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

12/12 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OC[2]M_3
rw
OC[1]M_3
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OC[2]CE
rw
OC[2]M
rw
OC[2]PE
rw
OC[2]FE
rw
CC[2]S
rw
OC[1]CE
rw
OC[1]M
rw
OC[1]PE
rw
OC[1]FE
rw
CC[1]S
rw
Toggle fields

CC[1]S

Bits 0-1: Capture/Compare 1 selection.

Allowed values:
0: Output: CCx channel is configured as output

OC[1]FE

Bit 2: Output compare 1 fast enable.

Allowed values:
0: Disabled: Fast output disabled
1: Enabled: Fast output enabled

OC[1]PE

Bit 3: Output compare 1 preload enable.

Allowed values:
0: Disabled: Preload register on CCRx disabled. New values written to CCRx are taken into account immediately
1: Enabled: Preload register on CCRx enabled. Preload value is loaded into active register on each update event

OC[1]M

Bits 4-6: Output compare 1 mode.

Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1

OC[1]CE

Bit 7: Output compare 1 clear enable.

Allowed values:
0: Disabled: OCxRef is not affected by the ETRF signal
1: Enabled: OCxRef is cleared as soon as a High level is detected on ETRF signal

CC[2]S

Bits 8-9: Capture/Compare 2 selection.

Allowed values:
0: Output: CCx channel is configured as output

OC[2]FE

Bit 10: Output compare 2 fast enable.

Allowed values:
0: Disabled: Fast output disabled
1: Enabled: Fast output enabled

OC[2]PE

Bit 11: Output compare 2 preload enable.

Allowed values:
0: Disabled: Preload register on CCRx disabled. New values written to CCRx are taken into account immediately
1: Enabled: Preload register on CCRx enabled. Preload value is loaded into active register on each update event

OC[2]M

Bits 12-14: Output compare 2 mode.

Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1

OC[2]CE

Bit 15: Output compare 2 clear enable.

Allowed values:
0: Disabled: OCxRef is not affected by the ETRF signal
1: Enabled: OCxRef is cleared as soon as a High level is detected on ETRF signal

OC[1]M_3

Bit 16: Output compare 1 mode, bit 3.

Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)

OC[2]M_3

Bit 24: Output compare 2 mode, bit 3.

Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)

CCMR2_Input

TIM1 capture/compare mode register 2 [alternate]

Offset: 0x1c, 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
IC[4]F
rw
IC[4]PSC
rw
CC4S
rw
IC[3]F
rw
IC[3]PSC
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)..

Allowed values:
1: TI3: CC3 channel is configured as input, IC3 is mapped on TI3
2: TI4: CC3 channel is configured as input, IC3 is mapped on TI4
3: TRC: CC3 channel is configured as input, IC3 is mapped on TRC

IC[3]PSC

Bits 2-3: Input capture 3 prescaler.

Allowed values:
0: NoPrescaler: No prescaler, capture is done each time an edge is detected on the capture input
1: TwoEvents: Capture is done once every 2 events
2: FourEvents: Capture is done once every 4 events
3: EightEvents: Capture is done once every 8 events

IC[3]F

Bits 4-7: Input capture 3 filter.

Allowed values:
0: NoFilter: No filter, sampling is done at fDTS
1: FCK_INT_N2: fSAMPLING=fCK_INT, N=2
2: FCK_INT_N4: fSAMPLING=fCK_INT, N=4
3: FCK_INT_N8: fSAMPLING=fCK_INT, N=8
4: FDTS_Div2_N6: fSAMPLING=fDTS/2, N=6
5: FDTS_Div2_N8: fSAMPLING=fDTS/2, N=8
6: FDTS_Div4_N6: fSAMPLING=fDTS/4, N=6
7: FDTS_Div4_N8: fSAMPLING=fDTS/4, N=8
8: FDTS_Div8_N6: fSAMPLING=fDTS/8, N=6
9: FDTS_Div8_N8: fSAMPLING=fDTS/8, N=8
10: FDTS_Div16_N5: fSAMPLING=fDTS/16, N=5
11: FDTS_Div16_N6: fSAMPLING=fDTS/16, N=6
12: FDTS_Div16_N8: fSAMPLING=fDTS/16, N=8
13: FDTS_Div32_N5: fSAMPLING=fDTS/32, N=5
14: FDTS_Div32_N6: fSAMPLING=fDTS/32, N=6
15: FDTS_Div32_N8: fSAMPLING=fDTS/32, N=8

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)..

Allowed values:
1: TI4: CC4 channel is configured as input, IC4 is mapped on TI4
2: TI3: CC4 channel is configured as input, IC4 is mapped on TI3
3: TRC: CC4 channel is configured as input, IC4 is mapped on TRC

IC[4]PSC

Bits 10-11: Input capture 4 prescaler.

Allowed values:
0: NoPrescaler: No prescaler, capture is done each time an edge is detected on the capture input
1: TwoEvents: Capture is done once every 2 events
2: FourEvents: Capture is done once every 4 events
3: EightEvents: Capture is done once every 8 events

IC[4]F

Bits 12-15: Input capture 4 filter.

Allowed values:
0: NoFilter: No filter, sampling is done at fDTS
1: FCK_INT_N2: fSAMPLING=fCK_INT, N=2
2: FCK_INT_N4: fSAMPLING=fCK_INT, N=4
3: FCK_INT_N8: fSAMPLING=fCK_INT, N=8
4: FDTS_Div2_N6: fSAMPLING=fDTS/2, N=6
5: FDTS_Div2_N8: fSAMPLING=fDTS/2, N=8
6: FDTS_Div4_N6: fSAMPLING=fDTS/4, N=6
7: FDTS_Div4_N8: fSAMPLING=fDTS/4, N=8
8: FDTS_Div8_N6: fSAMPLING=fDTS/8, N=6
9: FDTS_Div8_N8: fSAMPLING=fDTS/8, N=8
10: FDTS_Div16_N5: fSAMPLING=fDTS/16, N=5
11: FDTS_Div16_N6: fSAMPLING=fDTS/16, N=6
12: FDTS_Div16_N8: fSAMPLING=fDTS/16, N=8
13: FDTS_Div32_N5: fSAMPLING=fDTS/32, N=5
14: FDTS_Div32_N6: fSAMPLING=fDTS/32, N=6
15: FDTS_Div32_N8: fSAMPLING=fDTS/32, N=8

CCMR2_Output

TIM1 capture/compare mode register 2 [alternate]

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

12/12 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OC[4]M_3
rw
OC[3]M_3
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OC[4]CE
rw
OC[4]M
rw
OC[4]PE
rw
OC[4]FE
rw
CC[4]S
rw
OC[3]CE
rw
OC[3]M
rw
OC[3]PE
rw
OC[3]FE
rw
CC[3]S
rw
Toggle fields

CC[3]S

Bits 0-1: Capture/Compare 3 selection.

Allowed values:
0: Output: CCx channel is configured as output

OC[3]FE

Bit 2: Output compare 3 fast enable.

Allowed values:
0: Disabled: Fast output disabled
1: Enabled: Fast output enabled

OC[3]PE

Bit 3: Output compare 3 preload enable.

Allowed values:
0: Disabled: Preload register on CCRx disabled. New values written to CCRx are taken into account immediately
1: Enabled: Preload register on CCRx enabled. Preload value is loaded into active register on each update event

OC[3]M

Bits 4-6: Output compare 3 mode.

Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1

OC[3]CE

Bit 7: Output compare 3 clear enable.

Allowed values:
0: Disabled: OCxRef is not affected by the ETRF signal
1: Enabled: OCxRef is cleared as soon as a High level is detected on ETRF signal

CC[4]S

Bits 8-9: Capture/Compare 4 selection.

Allowed values:
0: Output: CCx channel is configured as output

OC[4]FE

Bit 10: Output compare 4 fast enable.

Allowed values:
0: Disabled: Fast output disabled
1: Enabled: Fast output enabled

OC[4]PE

Bit 11: Output compare 4 preload enable.

Allowed values:
0: Disabled: Preload register on CCRx disabled. New values written to CCRx are taken into account immediately
1: Enabled: Preload register on CCRx enabled. Preload value is loaded into active register on each update event

OC[4]M

Bits 12-14: Output compare 4 mode.

Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1

OC[4]CE

Bit 15: Output compare 4 clear enable.

Allowed values:
0: Disabled: OCxRef is not affected by the ETRF signal
1: Enabled: OCxRef is cleared as soon as a High level is detected on ETRF signal

OC[3]M_3

Bit 16: Output compare 3 mode, bit 3.

Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)

OC[4]M_3

Bit 24: Output compare 4 mode, bit 3.

Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)

CCER

TIM1 capture/compare enable register

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

19/19 fields covered.

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

CC[1]E

Bit 0: Capture/Compare 1 output enable.

Allowed values:
0: Disabled: Capture disabled
1: Enabled: Capture enabled

CC[1]P

Bit 1: Capture/Compare 1 output Polarity.

Allowed values:
0: RisingEdge: Noninverted/rising edge
1: FallingEdge: Inverted/falling edge

CC[1]NE

Bit 2: Capture/Compare 1 complementary output enable.

Allowed values:
0: Disabled: Complementary output disabled
1: Enabled: Complementary output enabled

CC[1]NP

Bit 3: Capture/Compare 1 output Polarity.

Allowed values:
0: ActiveHigh: OCxN active high
1: ActiveLow: OCxN active low

CC[2]E

Bit 4: Capture/Compare 2 output enable.

Allowed values:
0: Disabled: Capture disabled
1: Enabled: Capture enabled

CC[2]P

Bit 5: Capture/Compare 2 output Polarity.

Allowed values:
0: RisingEdge: Noninverted/rising edge
1: FallingEdge: Inverted/falling edge

CC[2]NE

Bit 6: Capture/Compare 2 complementary output enable.

Allowed values:
0: Disabled: Complementary output disabled
1: Enabled: Complementary output enabled

CC[2]NP

Bit 7: Capture/Compare 2 output Polarity.

Allowed values:
0: ActiveHigh: OCxN active high
1: ActiveLow: OCxN active low

CC[3]E

Bit 8: Capture/Compare 3 output enable.

Allowed values:
0: Disabled: Capture disabled
1: Enabled: Capture enabled

CC[3]P

Bit 9: Capture/Compare 3 output Polarity.

Allowed values:
0: RisingEdge: Noninverted/rising edge
1: FallingEdge: Inverted/falling edge

CC[3]NE

Bit 10: Capture/Compare 3 complementary output enable.

Allowed values:
0: Disabled: Complementary output disabled
1: Enabled: Complementary output enabled

CC[3]NP

Bit 11: Capture/Compare 3 output Polarity.

Allowed values:
0: ActiveHigh: OCxN active high
1: ActiveLow: OCxN active low

CC[4]E

Bit 12: Capture/Compare 4 output enable.

Allowed values:
0: Disabled: Capture disabled
1: Enabled: Capture enabled

CC[4]P

Bit 13: Capture/Compare 4 output Polarity.

Allowed values:
0: RisingEdge: Noninverted/rising edge
1: FallingEdge: Inverted/falling edge

CC[4]NP

Bit 15: Capture/Compare 4 output Polarity.

Allowed values:
0: ActiveHigh: OCxN active high
1: ActiveLow: OCxN active low

CC[5]E

Bit 16: Capture/Compare 5 output enable.

Allowed values:
0: Disabled: Capture disabled
1: Enabled: Capture enabled

CC[5]P

Bit 17: Capture/Compare 5 output Polarity.

Allowed values:
0: RisingEdge: Noninverted/rising edge
1: FallingEdge: Inverted/falling edge

CC[6]E

Bit 20: Capture/Compare 6 output enable.

Allowed values:
0: Disabled: Capture disabled
1: Enabled: Capture enabled

CC[6]P

Bit 21: Capture/Compare 6 output Polarity.

Allowed values:
0: RisingEdge: Noninverted/rising edge
1: FallingEdge: Inverted/falling edge

CNT

TIM1 counter

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

2/2 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.

Allowed values: 0x0-0xffff

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..

PSC

TIM1 prescaler

Offset: 0x28, 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
PSC
rw
Toggle fields

PSC

Bits 0-15: Prescaler value The counter clock frequency (CK_CNT) is equal to fCK_PSC / (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)..

Allowed values: 0x0-0xffff

ARR

TIM1 auto-reload register

Offset: 0x2c, size: 16, reset: 0x0000FFFF, access: Unspecified

1/1 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 for more details about ARR update and behavior. The counter is blocked while the auto-reload value is null..

Allowed values: 0x0-0xffff

RCR

TIM1 repetition counter register

Offset: 0x30, 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
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..

Allowed values: 0x0-0xffff

CCR[1]

capture/compare register

Offset: 0x34, 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
CCR
rw
Toggle fields

CCR

Bits 0-15: Capture/Compare value.

Allowed values: 0x0-0xffff

CCR[2]

capture/compare register

Offset: 0x38, 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
CCR
rw
Toggle fields

CCR

Bits 0-15: Capture/Compare value.

Allowed values: 0x0-0xffff

CCR[3]

capture/compare register

Offset: 0x3c, 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
CCR
rw
Toggle fields

CCR

Bits 0-15: Capture/Compare value.

Allowed values: 0x0-0xffff

CCR[4]

capture/compare register

Offset: 0x40, 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
CCR
rw
Toggle fields

CCR

Bits 0-15: Capture/Compare value.

Allowed values: 0x0-0xffff

BDTR

TIM1 break and dead-time register

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

10/16 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.

Allowed values: 0x0-0xff

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..

Allowed values:
0: Off: No bit is write protected
1: Level1: Any bits except MOE, OSSR, OSSI and LOCK in TIMx_BDTR register, OISx and OISxN bits in TIMx_CR2 register can no longer be written
2: Level2: LOCK Level 1 + CC Polarity bits (CCxP/CCxNP bits in TIMx_CCER register, as long as the related channel is configured in output through the CCxS bits) as well as OSSR and OSSI bits can no longer be written
3: Level3: LOCK Level 2 + CC Control bits (OCxM and OCxPE bits in TIMx_CCMRx registers, as long as the related channel is configured in output through the CCxS bits) can no longer be written

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 (enable register (TIM1_CCERTIMx_CCER)N/A). Note: This bit can not be modified as soon as the LOCK level 2 has been programmed (LOCK bits in TIMx_BDTR register)..

Allowed values:
0: HiZ: When inactive, OC/OCN outputs are disabled
1: IdleLevel: When inactive, OC/OCN outputs are forced to idle level

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 (enable register (TIM1_CCERTIMx_CCER)N/A). Note: This bit can not be modified as soon as the LOCK level 2 has been programmed (LOCK bits in TIMx_BDTR register)..

Allowed values:
0: HiZ: When inactive, OC/OCN outputs are disabled
1: IdleLevel: When inactive, OC/OCN outputs are enabled with their inactive level

BKE

Bit 12: Break enable This bit enables the complete break protection (including all sources connected to bk_acth and BKIN sources, as per ). 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..

Allowed values:
0: Disabled: Break function x disabled
1: Enabled: Break function x enabled

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..

Allowed values:
0: ActiveLow: Break input BRKx is active low
1: ActiveHigh: Break input BRKx is active high

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)..

Allowed values:
0: Manual: MOE can be set only by software
1: Automatic: MOE can be set by software or automatically at the next update event (if none of the break inputs BRK and BRK2 is active)

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 (enable register (TIM1_CCERTIMx_CCER)N/A)..

Allowed values:
0: DisabledIdle: OC/OCN are disabled or forced idle depending on OSSI
1: Enabled: OC/OCN are enabled if CCxE/CCxNE are set

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..

Allowed values:
0: Disabled: Break function x disabled
1: Enabled: Break function x enabled

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..

Allowed values:
0: ActiveLow: Break input BRKx is active low
1: ActiveHigh: Break input BRKx is active high

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.

DCR

TIM1 DMA control register

Offset: 0x48, size: 16, reset: 0x00000000, access: Unspecified

2/2 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: ....

Allowed values: 0x0-0x1f

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..

Allowed values: 0x0-0x12

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)..

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
OC6M2
rw
OC5M2
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OC6CE
rw
OC6M1
rw
OC6PE
rw
OC6FE
rw
OC5CE
rw
OC5M1
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..

OC5M1

Bits 4-6: 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..

OC6M1

Bits 12-14: Output compare 6 mode Refer to OC1M description..

OC6CE

Bit 15: Output compare 6 clear enable Refer to OC1CE description..

OC5M2

Bit 16: Output compare 5 mode Refer to OC1M description..

OC6M2

Bit 24: Output compare 6 mode Refer to OC1M description..

CCR5

capture/compare register

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

1/4 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
CCR
rw
Toggle fields

CCR

Bits 0-15: Capture/Compare value.

Allowed values: 0x0-0xffff

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..

CCR6

capture/compare register

Offset: 0x5c, 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
CCR
rw
Toggle fields

CCR

Bits 0-15: Capture/Compare value.

Allowed values: 0x0-0xffff

AF1

TIM1 alternate function option register 1

Offset: 0x60, size: 32, reset: 0x00000001, access: Unspecified

0/3 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
BKINP
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)..

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)..

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)..

AF2

TIM1 Alternate function register 2

Offset: 0x64, size: 32, reset: 0x00000001, access: Unspecified

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BK2INP
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)..

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)..

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.

TIM14

0x40002000: General-purpose timers

26/31 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) CR1
0xc (16-bit) DIER
0x10 (16-bit) SR
0x14 (16-bit) EGR
0x18 CCMR1_Input
0x18 CCMR1_Output
0x20 (16-bit) CCER
0x24 CNT
0x28 (16-bit) PSC
0x2c (16-bit) ARR
0x34 (16-bit) CCR[1]
0x68 (16-bit) TISEL
Toggle registers

CR1

TIM14 control register 1

Offset: 0x0, size: 16, reset: 0x00000000, access: Unspecified

6/7 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 Note: External clock and 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..

Allowed values:
0: Disabled: Counter disabled
1: Enabled: Counter enabled

UDIS

Bit 1: Update disable This bit is set and cleared by software to enable/disable update interrupt (UEV) event generation. Counter overflow Setting the UG bit. Buffered registers are then loaded with their preload values..

Allowed values:
0: Enabled: Update event enabled
1: Disabled: Update event disabled

URS

Bit 2: Update request source This bit is set and cleared by software to select the update interrupt (UEV) sources. Counter overflow Setting the UG bit.

Allowed values:
0: AnyEvent: Any of counter overflow/underflow, setting UG, or update through slave mode, generates an update interrupt or DMA request
1: CounterOnly: Only counter overflow/underflow generates an update interrupt or DMA request

OPM

Bit 3: One-pulse mode.

Allowed values:
0: Disabled: Counter is not stopped at update event
1: Enabled: Counter stops counting at the next update event (clearing the CEN bit)

ARPE

Bit 7: Auto-reload preload enable.

Allowed values:
0: Disabled: TIMx_APRR register is not buffered
1: Enabled: TIMx_APRR register is buffered

CKD

Bits 8-9: Clock division This bit-field indicates the division ratio between the timer clock (CK_INT) frequency and sampling clock used by the digital filters (TIx),.

Allowed values:
0: Div1: t_DTS = t_CK_INT
1: Div2: t_DTS = 2 × t_CK_INT
2: Div4: t_DTS = 4 × t_CK_INT

UIFREMAP

Bit 11: UIF status bit remapping.

DIER

TIM14 Interrupt enable register

Offset: 0xc, size: 16, reset: 0x00000000, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC[1]IE
rw
UIE
rw
Toggle fields

UIE

Bit 0: Update interrupt enable.

Allowed values:
0: Disabled: Update interrupt disabled
1: Enabled: Update interrupt enabled

CC[1]IE

Bit 1: Capture/Compare 1 interrupt enable.

Allowed values:
0: Disabled: CCx interrupt disabled
1: Enabled: CCx interrupt enabled

SR

TIM14 status register

Offset: 0x10, size: 16, reset: 0x00000000, access: Unspecified

3/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC[1]OF
r/w0c
CC[1]IF
r/w0c
UIF
r/w0c
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 and if 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..

Allowed values:
0: NoUpdateOccurred: No update occurred
1: UpdatePending: Update interrupt pending

CC[1]IF

Bit 1: Capture/compare 1 interrupt flag.

Allowed values:
0: NoMatch: No campture/compare has been detected
1: Match: If CC1 is an output: The content of the counter TIMx_CNT matches the content of the TIMx_CCR1 register. If CC1 is an input: The counter value has been captured in TIMx_CCR1 register.

CC[1]OF

Bit 9: Capture/Compare 1 overcapture flag.

Allowed values:
0: NoOvercapture: No overcapture has been detected
1: Overcapture: The counter value has been captured in TIMx_CCRx register while CCxIF flag was already set

EGR

TIM14 event generation register

Offset: 0x14, size: 16, reset: 0x00000000, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC[1]G
w
UG
w
Toggle fields

UG

Bit 0: Update generation This bit can be set by software, it is automatically cleared by hardware..

Allowed values:
1: Update: Re-initializes the timer counter and generates an update of the registers.

CC[1]G

Bit 1: Capture/compare 1 generation.

Allowed values:
1: Trigger: If CC1 is an output: CC1IF flag is set, Corresponding interrupt or DMA request is sent if enabled. If CC1 is an input: The current value of the counter is captured in TIMx_CCR1 register.

CCMR1_Input

TIM14 capture/compare mode register 1 [alternate]

Offset: 0x18, 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
IC[1]F
rw
IC[1]PSC
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)..

Allowed values:
1: TI1: CC1 channel is configured as input, IC1 is mapped on TI1
2: TI2: CC1 channel is configured as input, IC1 is mapped on TI2
3: TRC: CC1 channel is configured as input, IC1 is mapped on TRC

IC[1]PSC

Bits 2-3: Input capture 1 prescaler.

Allowed values:
0: NoPrescaler: No prescaler, capture is done each time an edge is detected on the capture input
1: TwoEvents: Capture is done once every 2 events
2: FourEvents: Capture is done once every 4 events
3: EightEvents: Capture is done once every 8 events

IC[1]F

Bits 4-7: Input capture 1 filter.

Allowed values:
0: NoFilter: No filter, sampling is done at fDTS
1: FCK_INT_N2: fSAMPLING=fCK_INT, N=2
2: FCK_INT_N4: fSAMPLING=fCK_INT, N=4
3: FCK_INT_N8: fSAMPLING=fCK_INT, N=8
4: FDTS_Div2_N6: fSAMPLING=fDTS/2, N=6
5: FDTS_Div2_N8: fSAMPLING=fDTS/2, N=8
6: FDTS_Div4_N6: fSAMPLING=fDTS/4, N=6
7: FDTS_Div4_N8: fSAMPLING=fDTS/4, N=8
8: FDTS_Div8_N6: fSAMPLING=fDTS/8, N=6
9: FDTS_Div8_N8: fSAMPLING=fDTS/8, N=8
10: FDTS_Div16_N5: fSAMPLING=fDTS/16, N=5
11: FDTS_Div16_N6: fSAMPLING=fDTS/16, N=6
12: FDTS_Div16_N8: fSAMPLING=fDTS/16, N=8
13: FDTS_Div32_N5: fSAMPLING=fDTS/32, N=5
14: FDTS_Div32_N6: fSAMPLING=fDTS/32, N=6
15: FDTS_Div32_N8: fSAMPLING=fDTS/32, N=8

CCMR1_Output

TIM14 capture/compare mode register 1 [alternate]

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

4/5 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OC[1]M_3
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OC[1]M
rw
OC[1]PE
rw
OC[1]FE
rw
CC[1]S
rw
Toggle fields

CC[1]S

Bits 0-1: Capture/Compare 1 selection.

Allowed values:
0: Output: CCx channel is configured as output

OC[1]FE

Bit 2: Output compare 1 fast enable.

Allowed values:
0: Disabled: Fast output disabled
1: Enabled: Fast output enabled

OC[1]PE

Bit 3: Output compare 1 preload enable.

Allowed values:
0: Disabled: Preload register on CCRx disabled. New values written to CCRx are taken into account immediately
1: Enabled: Preload register on CCRx enabled. Preload value is loaded into active register on each update event

OC[1]M

Bits 4-6: Output compare 1 mode.

Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy
4: ForceInactive: OCyREF is forced low
5: ForceActive: OCyREF is forced high
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active
7: PwmMode2: Inversely to PwmMode1

OC[1]M_3

Bit 16: Output compare 1 mode, bit 3.

CCER

TIM14 capture/compare enable register

Offset: 0x20, size: 16, reset: 0x00000000, access: Unspecified

2/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC[1]NP
rw
CC[1]P
rw
CC[1]E
rw
Toggle fields

CC[1]E

Bit 0: Capture/Compare 1 output enable.

Allowed values:
0: Disabled: Capture disabled
1: Enabled: Capture enabled

CC[1]P

Bit 1: Capture/Compare 1 output Polarity.

Allowed values:
0: RisingEdge: Noninverted/rising edge
1: FallingEdge: Inverted/falling edge

CC[1]NP

Bit 3: Capture/Compare 1 output Polarity.

CNT

TIM14 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
rw
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.

Allowed values: 0x0-0xffff

UIFCPY

Bit 31: UIF Copy This bit is a read-only copy of the UIF bit in the TIMx_ISR register..

PSC

TIM14 prescaler

Offset: 0x28, 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
PSC
rw
Toggle fields

PSC

Bits 0-15: Prescaler value The counter clock frequency CK_CNT is equal to fCK_PSC / (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)..

Allowed values: 0x0-0xffff

ARR

TIM14 auto-reload register

Offset: 0x2c, size: 16, reset: 0x0000FFFF, access: Unspecified

1/1 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 for more details about ARR update and behavior. The counter is blocked while the auto-reload value is null..

Allowed values: 0x0-0xffff

CCR[1]

capture/compare register

Offset: 0x34, 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
CCR
rw
Toggle fields

CCR

Bits 0-15: Capture/Compare value.

Allowed values: 0x0-0xffff

TISEL

TIM14 timer input selection register

Offset: 0x68, 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
TI1SEL
rw
Toggle fields

TI1SEL

Bits 0-3: selects TI1[0] to TI1[15] input Others: Reserved.

TIM16

0x40014400: General-purpose timers

51/62 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) CR1
0x4 (16-bit) CR2
0xc (16-bit) DIER
0x10 (16-bit) SR
0x14 (16-bit) EGR
0x18 CCMR1_Input
0x18 CCMR1_Output
0x20 (16-bit) CCER
0x24 CNT
0x28 (16-bit) PSC
0x2c (16-bit) ARR
0x30 (16-bit) RCR
0x34 (16-bit) CCR[1]
0x44 BDTR
0x48 (16-bit) DCR
0x4c (16-bit) DMAR
0x60 AF1
0x68 TISEL
Toggle registers

CR1

TIM16 control register 1

Offset: 0x0, size: 16, reset: 0x00000000, access: Unspecified

6/7 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 Note: External clock and 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..

Allowed values:
0: Disabled: Counter disabled
1: Enabled: Counter enabled

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..

Allowed values:
0: Enabled: Update event enabled
1: Disabled: Update event disabled

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.

Allowed values:
0: AnyEvent: Any of counter overflow/underflow, setting UG, or update through slave mode, generates an update interrupt or DMA request
1: CounterOnly: Only counter overflow/underflow generates an update interrupt or DMA request

OPM

Bit 3: One pulse mode.

Allowed values:
0: Disabled: Counter is not stopped at update event
1: Enabled: Counter stops counting at the next update event (clearing the CEN bit)

ARPE

Bit 7: Auto-reload preload enable.

Allowed values:
0: Disabled: TIMx_APRR register is not buffered
1: Enabled: TIMx_APRR register is buffered

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 (tDTS)used by the dead-time generators and the digital filters (TIx),.

Allowed values:
0: Div1: t_DTS = t_CK_INT
1: Div2: t_DTS = 2 × t_CK_INT
2: Div4: t_DTS = 4 × t_CK_INT

UIFREMAP

Bit 11: UIF status bit remapping.

CR2

TIM16 control register 2

Offset: 0x4, size: 16, reset: 0x00000000, access: Unspecified

5/5 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OIS[1]N
rw
OIS[1]
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..

Allowed values:
0: NotPreloaded: CCxE, CCxNE and OCxM bits are not preloaded
1: Preloaded: CCxE, CCxNE and OCxM bits are preloaded

CCUS

Bit 2: Capture/compare control update selection Note: This bit acts only on channels that have a complementary output..

Allowed values:
0: Sw: When capture/compare control bits are preloaded (CCPC=1), they are updated by setting the COMG bit only
1: SwOrEdge: When capture/compare control bits are preloaded (CCPC=1), they are updated by setting the COMG bit or when an rising edge occurs on TRGI

CCDS

Bit 3: Capture/compare DMA selection.

Allowed values:
0: OnCompare: CCx DMA request sent when CCx event occurs
1: OnUpdate: CCx DMA request sent when update event occurs

OIS[1]

Bit 8: Output Idle state (OC1 output).

Allowed values:
0: Reset: OCx=0 (after a dead-time if OCx(N) is implemented) when MOE=0
1: Set: OCx=1 (after a dead-time if OCx(N) is implemented) when MOE=0

OIS[1]N

Bit 9: Output Idle state (OC1N output).

Allowed values:
0: Reset: OCxN=0 after a dead-time when MOE=0
1: Set: OCxN=1 after a dead-time when MOE=0

DIER

TIM16 DMA/interrupt enable register

Offset: 0xc, size: 16, reset: 0x00000000, access: Unspecified

6/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC[1]DE
rw
UDE
rw
BIE
rw
COMIE
rw
CC[1]IE
rw
UIE
rw
Toggle fields

UIE

Bit 0: Update interrupt enable.

Allowed values:
0: Disabled: Update interrupt disabled
1: Enabled: Update interrupt enabled

CC[1]IE

Bit 1: Capture/Compare 1 interrupt enable.

Allowed values:
0: Disabled: CCx interrupt disabled
1: Enabled: CCx interrupt enabled

COMIE

Bit 5: COM interrupt enable.

Allowed values:
0: Disabled: COM interrupt disabled
1: Enabled: COM interrupt enabled

BIE

Bit 7: Break interrupt enable.

Allowed values:
0: Disabled: Break interrupt disabled
1: Enabled: Break interrupt enabled

UDE

Bit 8: Update DMA request enable.

Allowed values:
0: Disabled: Update DMA request disabled
1: Enabled: Update DMA request enabled

CC[1]DE

Bit 9: Capture/Compare 1 DMA request enable.

Allowed values:
0: Disabled: CCx DMA request disabled
1: Enabled: CCx DMA request enabled

SR

TIM16 status register

Offset: 0x10, size: 16, reset: 0x00000000, access: Unspecified

5/5 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC[1]OF
r/w0c
BIF
r/w0c
COMIF
r/w0c
CC[1]IF
r/w0c
UIF
r/w0c
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 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..

Allowed values:
0: NoUpdateOccurred: No update occurred
1: UpdatePending: Update interrupt pending

CC[1]IF

Bit 1: Capture/compare 1 interrupt flag.

Allowed values:
0: NoMatch: No campture/compare has been detected
1: Match: If CC1 is an output: The content of the counter TIMx_CNT matches the content of the TIMx_CCR1 register. If CC1 is an input: The counter value has been captured in TIMx_CCR1 register.

COMIF

Bit 5: COM interrupt flag.

Allowed values:
0: NoCOM: No COM event occurred
1: COM: COM interrupt pending

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..

Allowed values:
0: NoTrigger: No break event occurred
1: Trigger: An active level has been detected on the break input. An interrupt is generated if BIE=1 in the TIMx_DIER register

CC[1]OF

Bit 9: Capture/Compare 1 overcapture flag.

Allowed values:
0: NoOvercapture: No overcapture has been detected
1: Overcapture: The counter value has been captured in TIMx_CCRx register while CCxIF flag was already set

EGR

TIM16 event generation register

Offset: 0x14, size: 16, reset: 0x00000000, access: Unspecified

4/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BG
w
COMG
w
CC[1]G
w
UG
w
Toggle fields

UG

Bit 0: Update generation This bit can be set by software, it is automatically cleared by hardware..

Allowed values:
1: Update: Re-initializes the timer counter and generates an update of the registers.

CC[1]G

Bit 1: Capture/compare 1 generation.

Allowed values:
1: Trigger: If CC1 is an output: CC1IF flag is set, Corresponding interrupt or DMA request is sent if enabled. If CC1 is an input: The current value of the counter is captured in TIMx_CCR1 register.

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 that have a complementary output..

Allowed values:
1: Trigger: When CCPC bit is set, it allows CCxE, CCxNE and OCxM bits to be updated

BG

Bit 7: Break generation This bit is set by software in order to generate an event, it is automatically cleared by hardware..

Allowed values:
1: Trigger: A break event is generated. MOE bit is cleared and BIF flag is set. Related interrupt or DMA transfer can occur if enabled

CCMR1_Input

TIM16 capture/compare mode register 1 [alternate]

Offset: 0x18, 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
IC[1]F
rw
IC[1]PSC
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. Others: Reserved Note: CC1S bits are writable only when the channel is OFF (CC1E = 0 in TIMx_CCER)..

Allowed values:
1: TI1: CC1 channel is configured as input, IC1 is mapped on TI1
2: TI2: CC1 channel is configured as input, IC1 is mapped on TI2
3: TRC: CC1 channel is configured as input, IC1 is mapped on TRC

IC[1]PSC

Bits 2-3: Input capture 1 prescaler.

Allowed values:
0: NoPrescaler: No prescaler, capture is done each time an edge is detected on the capture input
1: TwoEvents: Capture is done once every 2 events
2: FourEvents: Capture is done once every 4 events
3: EightEvents: Capture is done once every 8 events

IC[1]F

Bits 4-7: Input capture 1 filter.

Allowed values:
0: NoFilter: No filter, sampling is done at fDTS
1: FCK_INT_N2: fSAMPLING=fCK_INT, N=2
2: FCK_INT_N4: fSAMPLING=fCK_INT, N=4
3: FCK_INT_N8: fSAMPLING=fCK_INT, N=8
4: FDTS_Div2_N6: fSAMPLING=fDTS/2, N=6
5: FDTS_Div2_N8: fSAMPLING=fDTS/2, N=8
6: FDTS_Div4_N6: fSAMPLING=fDTS/4, N=6
7: FDTS_Div4_N8: fSAMPLING=fDTS/4, N=8
8: FDTS_Div8_N6: fSAMPLING=fDTS/8, N=6
9: FDTS_Div8_N8: fSAMPLING=fDTS/8, N=8
10: FDTS_Div16_N5: fSAMPLING=fDTS/16, N=5
11: FDTS_Div16_N6: fSAMPLING=fDTS/16, N=6
12: FDTS_Div16_N8: fSAMPLING=fDTS/16, N=8
13: FDTS_Div32_N5: fSAMPLING=fDTS/32, N=5
14: FDTS_Div32_N6: fSAMPLING=fDTS/32, N=6
15: FDTS_Div32_N8: fSAMPLING=fDTS/32, N=8

CCMR1_Output

TIM16 capture/compare mode register 1 [alternate]

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

4/5 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OC[1]M_3
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OC[1]M
rw
OC[1]PE
rw
OC[1]FE
rw
CC[1]S
rw
Toggle fields

CC[1]S

Bits 0-1: Capture/Compare 1 selection.

Allowed values:
0: Output: CCx channel is configured as output

OC[1]FE

Bit 2: Output compare 1 fast enable.

Allowed values:
0: Disabled: Fast output disabled
1: Enabled: Fast output enabled

OC[1]PE

Bit 3: Output compare 1 preload enable.

Allowed values:
0: Disabled: Preload register on CCRx disabled. New values written to CCRx are taken into account immediately
1: Enabled: Preload register on CCRx enabled. Preload value is loaded into active register on each update event

OC[1]M

Bits 4-6: Output compare 1 mode.

Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy
4: ForceInactive: OCyREF is forced low
5: ForceActive: OCyREF is forced high
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active
7: PwmMode2: Inversely to PwmMode1

OC[1]M_3

Bit 16: Output compare 1 mode, bit 3.

CCER

TIM16 capture/compare enable register

Offset: 0x20, size: 16, reset: 0x00000000, access: Unspecified

4/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC[1]NP
rw
CC[1]NE
rw
CC[1]P
rw
CC[1]E
rw
Toggle fields

CC[1]E

Bit 0: Capture/Compare 1 output enable.

Allowed values:
0: Disabled: Capture disabled
1: Enabled: Capture enabled

CC[1]P

Bit 1: Capture/Compare 1 output Polarity.

Allowed values:
0: RisingEdge: Noninverted/rising edge
1: FallingEdge: Inverted/falling edge

CC[1]NE

Bit 2: Capture/Compare 1 complementary output enable.

Allowed values:
0: Disabled: Complementary output disabled
1: Enabled: Complementary output enabled

CC[1]NP

Bit 3: Capture/Compare 1 output Polarity.

Allowed values:
0: ActiveHigh: OCxN active high
1: ActiveLow: OCxN active low

CNT

TIM16 counter

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

2/2 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.

Allowed values: 0x0-0xffff

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..

PSC

TIM16 prescaler

Offset: 0x28, 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
PSC
rw
Toggle fields

PSC

Bits 0-15: Prescaler value The counter clock frequency (CK_CNT) is equal to fCK_PSC / (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)..

Allowed values: 0x0-0xffff

ARR

TIM16 auto-reload register

Offset: 0x2c, size: 16, reset: 0x0000FFFF, access: Unspecified

1/1 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 for more details about ARR update and behavior. The counter is blocked while the auto-reload value is null..

Allowed values: 0x0-0xffff

RCR

TIM16 repetition counter register

Offset: 0x30, 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
REP
rw
Toggle fields

REP

Bits 0-7: 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..

Allowed values: 0x0-0xff

CCR[1]

capture/compare register

Offset: 0x34, 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
CCR
rw
Toggle fields

CCR

Bits 0-15: Capture/Compare value.

Allowed values: 0x0-0xffff

BDTR

TIM16 break and dead-time register

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

8/11 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.

Allowed values: 0x0-0xff

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..

Allowed values:
0: Off: No bit is write protected
1: Level1: Any bits except MOE, OSSR, OSSI and LOCK in TIMx_BDTR register, OISx and OISxN bits in TIMx_CR2 register can no longer be written
2: Level2: LOCK Level 1 + CC Polarity bits (CCxP/CCxNP bits in TIMx_CCER register, as long as the related channel is configured in output through the CCxS bits) as well as OSSR and OSSI bits can no longer be written
3: Level3: LOCK Level 2 + CC Control bits (OCxM and OCxPE bits in TIMx_CCMRx registers, as long as the related channel is configured in output through the CCxS bits) can no longer be written

OSSI

Bit 10: Off-state selection for Idle mode This bit is used when MOE=0 on channels configured as outputs. See OC/OCN enable description for more details (enable register (TIM16_CCER)(TIMx_CCER)(x = 16 to 17) on page 1793). Note: This bit can not be modified as soon as the LOCK level 2 has been programmed (LOCK bits in TIMx_BDTR register)..

Allowed values:
0: HiZ: When inactive, OC/OCN outputs are disabled
1: IdleLevel: When inactive, OC/OCN outputs are forced to idle level

OSSR

Bit 11: Off-state selection for Run mode This bit is used when MOE=1 on channels that have 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 (enable register (TIM16_CCER)(TIMx_CCER)(x = 16 to 17) on page 1793). Note: This bit can not be modified as soon as the LOCK level 2 has been programmed (LOCK bits in TIMx_BDTR register)..

Allowed values:
0: HiZ: When inactive, OC/OCN outputs are disabled
1: IdleLevel: When inactive, OC/OCN outputs are enabled with their inactive level

BKE

Bit 12: Break enable 1; Break inputs (BRK and CCS clock failure event) enabled Note: This bit cannot be modified when LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..

Allowed values:
0: Disabled: Break function x disabled
1: Enabled: Break function x enabled

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). Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..

Allowed values:
0: ActiveLow: Break input BRKx is active low
1: ActiveHigh: Break input BRKx is active high

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)..

Allowed values:
0: Manual: MOE can be set only by software
1: Automatic: MOE can be set by software or automatically at the next update event (if none of the break inputs BRK and BRK2 is active)

MOE

Bit 15: Main output enable This bit is cleared asynchronously by hardware as soon as the break input is active. It is set by software or automatically depending on the AOE bit. It is acting only on the channels which are configured in output. enable register (TIM16_CCER)(TIMx_CCER)(x = 16 to 17) on page 1793)..

Allowed values:
0: DisabledIdle: OC/OCN are disabled or forced idle depending on OSSI
1: Enabled: OC/OCN are enabled if CCxE/CCxNE are set

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 events are needed to validate a transition on the output: This bit cannot be modified when LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..

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..

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..

DCR

TIM16 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-bit field 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: ... Example: Let us consider the following transfer: DBL = 7 transfers and DBA = TIMx_CR1. In this case the transfer is done to/from 7 registers starting from the TIMx_CR1 address..

DBL

Bits 8-12: DMA burst length This 5-bit field 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). ....

DMAR

TIM16 DMA address for full transfer

Offset: 0x4c, 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
DMAB
rw
Toggle fields

DMAB

Bits 0-15: 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)..

AF1

TIM16 alternate function register 1

Offset: 0x60, size: 32, reset: 0x00000001, access: Unspecified

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BKINP
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)..

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)..

TISEL

TIM16 input selection register

Offset: 0x68, 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
TI1SEL
rw
Toggle fields

TI1SEL

Bits 0-3: selects TI1[0] to TI1[15] input Others: Reserved.

TIM17

0x40014800: General-purpose timers

51/62 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) CR1
0x4 (16-bit) CR2
0xc (16-bit) DIER
0x10 (16-bit) SR
0x14 (16-bit) EGR
0x18 CCMR1_Input
0x18 CCMR1_Output
0x20 (16-bit) CCER
0x24 CNT
0x28 (16-bit) PSC
0x2c (16-bit) ARR
0x30 (16-bit) RCR
0x34 (16-bit) CCR[1]
0x44 BDTR
0x48 (16-bit) DCR
0x4c (16-bit) DMAR
0x60 AF1
0x68 TISEL
Toggle registers

CR1

TIM17 control register 1

Offset: 0x0, size: 16, reset: 0x00000000, access: Unspecified

6/7 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 Note: External clock and 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..

Allowed values:
0: Disabled: Counter disabled
1: Enabled: Counter enabled

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..

Allowed values:
0: Enabled: Update event enabled
1: Disabled: Update event disabled

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.

Allowed values:
0: AnyEvent: Any of counter overflow/underflow, setting UG, or update through slave mode, generates an update interrupt or DMA request
1: CounterOnly: Only counter overflow/underflow generates an update interrupt or DMA request

OPM

Bit 3: One pulse mode.

Allowed values:
0: Disabled: Counter is not stopped at update event
1: Enabled: Counter stops counting at the next update event (clearing the CEN bit)

ARPE

Bit 7: Auto-reload preload enable.

Allowed values:
0: Disabled: TIMx_APRR register is not buffered
1: Enabled: TIMx_APRR register is buffered

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 (tDTS)used by the dead-time generators and the digital filters (TIx),.

Allowed values:
0: Div1: t_DTS = t_CK_INT
1: Div2: t_DTS = 2 × t_CK_INT
2: Div4: t_DTS = 4 × t_CK_INT

UIFREMAP

Bit 11: UIF status bit remapping.

CR2

TIM17 control register 2

Offset: 0x4, size: 16, reset: 0x00000000, access: Unspecified

5/5 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OIS[1]N
rw
OIS[1]
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..

Allowed values:
0: NotPreloaded: CCxE, CCxNE and OCxM bits are not preloaded
1: Preloaded: CCxE, CCxNE and OCxM bits are preloaded

CCUS

Bit 2: Capture/compare control update selection Note: This bit acts only on channels that have a complementary output..

Allowed values:
0: Sw: When capture/compare control bits are preloaded (CCPC=1), they are updated by setting the COMG bit only
1: SwOrEdge: When capture/compare control bits are preloaded (CCPC=1), they are updated by setting the COMG bit or when an rising edge occurs on TRGI

CCDS

Bit 3: Capture/compare DMA selection.

Allowed values:
0: OnCompare: CCx DMA request sent when CCx event occurs
1: OnUpdate: CCx DMA request sent when update event occurs

OIS[1]

Bit 8: Output Idle state (OC1 output).

Allowed values:
0: Reset: OCx=0 (after a dead-time if OCx(N) is implemented) when MOE=0
1: Set: OCx=1 (after a dead-time if OCx(N) is implemented) when MOE=0

OIS[1]N

Bit 9: Output Idle state (OC1N output).

Allowed values:
0: Reset: OCxN=0 after a dead-time when MOE=0
1: Set: OCxN=1 after a dead-time when MOE=0

DIER

TIM17 DMA/interrupt enable register

Offset: 0xc, size: 16, reset: 0x00000000, access: Unspecified

6/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC[1]DE
rw
UDE
rw
BIE
rw
COMIE
rw
CC[1]IE
rw
UIE
rw
Toggle fields

UIE

Bit 0: Update interrupt enable.

Allowed values:
0: Disabled: Update interrupt disabled
1: Enabled: Update interrupt enabled

CC[1]IE

Bit 1: Capture/Compare 1 interrupt enable.

Allowed values:
0: Disabled: CCx interrupt disabled
1: Enabled: CCx interrupt enabled

COMIE

Bit 5: COM interrupt enable.

Allowed values:
0: Disabled: COM interrupt disabled
1: Enabled: COM interrupt enabled

BIE

Bit 7: Break interrupt enable.

Allowed values:
0: Disabled: Break interrupt disabled
1: Enabled: Break interrupt enabled

UDE

Bit 8: Update DMA request enable.

Allowed values:
0: Disabled: Update DMA request disabled
1: Enabled: Update DMA request enabled

CC[1]DE

Bit 9: Capture/Compare 1 DMA request enable.

Allowed values:
0: Disabled: CCx DMA request disabled
1: Enabled: CCx DMA request enabled

SR

TIM17 status register

Offset: 0x10, size: 16, reset: 0x00000000, access: Unspecified

5/5 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC[1]OF
r/w0c
BIF
r/w0c
COMIF
r/w0c
CC[1]IF
r/w0c
UIF
r/w0c
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 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..

Allowed values:
0: NoUpdateOccurred: No update occurred
1: UpdatePending: Update interrupt pending

CC[1]IF

Bit 1: Capture/compare 1 interrupt flag.

Allowed values:
0: NoMatch: No campture/compare has been detected
1: Match: If CC1 is an output: The content of the counter TIMx_CNT matches the content of the TIMx_CCR1 register. If CC1 is an input: The counter value has been captured in TIMx_CCR1 register.

COMIF

Bit 5: COM interrupt flag.

Allowed values:
0: NoCOM: No COM event occurred
1: COM: COM interrupt pending

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..

Allowed values:
0: NoTrigger: No break event occurred
1: Trigger: An active level has been detected on the break input. An interrupt is generated if BIE=1 in the TIMx_DIER register

CC[1]OF

Bit 9: Capture/Compare 1 overcapture flag.

Allowed values:
0: NoOvercapture: No overcapture has been detected
1: Overcapture: The counter value has been captured in TIMx_CCRx register while CCxIF flag was already set

EGR

TIM17 event generation register

Offset: 0x14, size: 16, reset: 0x00000000, access: Unspecified

4/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BG
w
COMG
w
CC[1]G
w
UG
w
Toggle fields

UG

Bit 0: Update generation This bit can be set by software, it is automatically cleared by hardware..

Allowed values:
1: Update: Re-initializes the timer counter and generates an update of the registers.

CC[1]G

Bit 1: Capture/compare 1 generation.

Allowed values:
1: Trigger: If CC1 is an output: CC1IF flag is set, Corresponding interrupt or DMA request is sent if enabled. If CC1 is an input: The current value of the counter is captured in TIMx_CCR1 register.

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 that have a complementary output..

Allowed values:
1: Trigger: When CCPC bit is set, it allows CCxE, CCxNE and OCxM bits to be updated

BG

Bit 7: Break generation This bit is set by software in order to generate an event, it is automatically cleared by hardware..

Allowed values:
1: Trigger: A break event is generated. MOE bit is cleared and BIF flag is set. Related interrupt or DMA transfer can occur if enabled

CCMR1_Input

TIM17 capture/compare mode register 1 [alternate]

Offset: 0x18, 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
IC[1]F
rw
IC[1]PSC
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. Others: Reserved Note: CC1S bits are writable only when the channel is OFF (CC1E = 0 in TIMx_CCER)..

Allowed values:
1: TI1: CC1 channel is configured as input, IC1 is mapped on TI1
2: TI2: CC1 channel is configured as input, IC1 is mapped on TI2
3: TRC: CC1 channel is configured as input, IC1 is mapped on TRC

IC[1]PSC

Bits 2-3: Input capture 1 prescaler.

Allowed values:
0: NoPrescaler: No prescaler, capture is done each time an edge is detected on the capture input
1: TwoEvents: Capture is done once every 2 events
2: FourEvents: Capture is done once every 4 events
3: EightEvents: Capture is done once every 8 events

IC[1]F

Bits 4-7: Input capture 1 filter.

Allowed values:
0: NoFilter: No filter, sampling is done at fDTS
1: FCK_INT_N2: fSAMPLING=fCK_INT, N=2
2: FCK_INT_N4: fSAMPLING=fCK_INT, N=4
3: FCK_INT_N8: fSAMPLING=fCK_INT, N=8
4: FDTS_Div2_N6: fSAMPLING=fDTS/2, N=6
5: FDTS_Div2_N8: fSAMPLING=fDTS/2, N=8
6: FDTS_Div4_N6: fSAMPLING=fDTS/4, N=6
7: FDTS_Div4_N8: fSAMPLING=fDTS/4, N=8
8: FDTS_Div8_N6: fSAMPLING=fDTS/8, N=6
9: FDTS_Div8_N8: fSAMPLING=fDTS/8, N=8
10: FDTS_Div16_N5: fSAMPLING=fDTS/16, N=5
11: FDTS_Div16_N6: fSAMPLING=fDTS/16, N=6
12: FDTS_Div16_N8: fSAMPLING=fDTS/16, N=8
13: FDTS_Div32_N5: fSAMPLING=fDTS/32, N=5
14: FDTS_Div32_N6: fSAMPLING=fDTS/32, N=6
15: FDTS_Div32_N8: fSAMPLING=fDTS/32, N=8

CCMR1_Output

TIM17 capture/compare mode register 1 [alternate]

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

4/5 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OC[1]M_3
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OC[1]M
rw
OC[1]PE
rw
OC[1]FE
rw
CC[1]S
rw
Toggle fields

CC[1]S

Bits 0-1: Capture/Compare 1 selection.

Allowed values:
0: Output: CCx channel is configured as output

OC[1]FE

Bit 2: Output compare 1 fast enable.

Allowed values:
0: Disabled: Fast output disabled
1: Enabled: Fast output enabled

OC[1]PE

Bit 3: Output compare 1 preload enable.

Allowed values:
0: Disabled: Preload register on CCRx disabled. New values written to CCRx are taken into account immediately
1: Enabled: Preload register on CCRx enabled. Preload value is loaded into active register on each update event

OC[1]M

Bits 4-6: Output compare 1 mode.

Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy
4: ForceInactive: OCyREF is forced low
5: ForceActive: OCyREF is forced high
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active
7: PwmMode2: Inversely to PwmMode1

OC[1]M_3

Bit 16: Output compare 1 mode, bit 3.

CCER

TIM17 capture/compare enable register

Offset: 0x20, size: 16, reset: 0x00000000, access: Unspecified

4/4 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC[1]NP
rw
CC[1]NE
rw
CC[1]P
rw
CC[1]E
rw
Toggle fields

CC[1]E

Bit 0: Capture/Compare 1 output enable.

Allowed values:
0: Disabled: Capture disabled
1: Enabled: Capture enabled

CC[1]P

Bit 1: Capture/Compare 1 output Polarity.

Allowed values:
0: RisingEdge: Noninverted/rising edge
1: FallingEdge: Inverted/falling edge

CC[1]NE

Bit 2: Capture/Compare 1 complementary output enable.

Allowed values:
0: Disabled: Complementary output disabled
1: Enabled: Complementary output enabled

CC[1]NP

Bit 3: Capture/Compare 1 output Polarity.

Allowed values:
0: ActiveHigh: OCxN active high
1: ActiveLow: OCxN active low

CNT

TIM17 counter

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

2/2 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.

Allowed values: 0x0-0xffff

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..

PSC

TIM17 prescaler

Offset: 0x28, 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
PSC
rw
Toggle fields

PSC

Bits 0-15: Prescaler value The counter clock frequency (CK_CNT) is equal to fCK_PSC / (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)..

Allowed values: 0x0-0xffff

ARR

TIM17 auto-reload register

Offset: 0x2c, size: 16, reset: 0x0000FFFF, access: Unspecified

1/1 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 for more details about ARR update and behavior. The counter is blocked while the auto-reload value is null..

Allowed values: 0x0-0xffff

RCR

TIM17 repetition counter register

Offset: 0x30, 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
REP
rw
Toggle fields

REP

Bits 0-7: 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..

Allowed values: 0x0-0xff

CCR[1]

capture/compare register

Offset: 0x34, 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
CCR
rw
Toggle fields

CCR

Bits 0-15: Capture/Compare value.

Allowed values: 0x0-0xffff

BDTR

TIM17 break and dead-time register

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

8/11 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.

Allowed values: 0x0-0xff

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..

Allowed values:
0: Off: No bit is write protected
1: Level1: Any bits except MOE, OSSR, OSSI and LOCK in TIMx_BDTR register, OISx and OISxN bits in TIMx_CR2 register can no longer be written
2: Level2: LOCK Level 1 + CC Polarity bits (CCxP/CCxNP bits in TIMx_CCER register, as long as the related channel is configured in output through the CCxS bits) as well as OSSR and OSSI bits can no longer be written
3: Level3: LOCK Level 2 + CC Control bits (OCxM and OCxPE bits in TIMx_CCMRx registers, as long as the related channel is configured in output through the CCxS bits) can no longer be written

OSSI

Bit 10: Off-state selection for Idle mode This bit is used when MOE=0 on channels configured as outputs. See OC/OCN enable description for more details (enable register (TIM16_CCER)(TIMx_CCER)(x = 16 to 17) on page 1793). Note: This bit can not be modified as soon as the LOCK level 2 has been programmed (LOCK bits in TIMx_BDTR register)..

Allowed values:
0: HiZ: When inactive, OC/OCN outputs are disabled
1: IdleLevel: When inactive, OC/OCN outputs are forced to idle level

OSSR

Bit 11: Off-state selection for Run mode This bit is used when MOE=1 on channels that have 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 (enable register (TIM16_CCER)(TIMx_CCER)(x = 16 to 17) on page 1793). Note: This bit can not be modified as soon as the LOCK level 2 has been programmed (LOCK bits in TIMx_BDTR register)..

Allowed values:
0: HiZ: When inactive, OC/OCN outputs are disabled
1: IdleLevel: When inactive, OC/OCN outputs are enabled with their inactive level

BKE

Bit 12: Break enable 1; Break inputs (BRK and CCS clock failure event) enabled Note: This bit cannot be modified when LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..

Allowed values:
0: Disabled: Break function x disabled
1: Enabled: Break function x enabled

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). Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..

Allowed values:
0: ActiveLow: Break input BRKx is active low
1: ActiveHigh: Break input BRKx is active high

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)..

Allowed values:
0: Manual: MOE can be set only by software
1: Automatic: MOE can be set by software or automatically at the next update event (if none of the break inputs BRK and BRK2 is active)

MOE

Bit 15: Main output enable This bit is cleared asynchronously by hardware as soon as the break input is active. It is set by software or automatically depending on the AOE bit. It is acting only on the channels which are configured in output. enable register (TIM16_CCER)(TIMx_CCER)(x = 16 to 17) on page 1793)..

Allowed values:
0: DisabledIdle: OC/OCN are disabled or forced idle depending on OSSI
1: Enabled: OC/OCN are enabled if CCxE/CCxNE are set

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 events are needed to validate a transition on the output: This bit cannot be modified when LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..

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..

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..

DCR

TIM17 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-bit field 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: ... Example: Let us consider the following transfer: DBL = 7 transfers and DBA = TIMx_CR1. In this case the transfer is done to/from 7 registers starting from the TIMx_CR1 address..

DBL

Bits 8-12: DMA burst length This 5-bit field 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). ....

DMAR

TIM17 DMA address for full transfer

Offset: 0x4c, 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
DMAB
rw
Toggle fields

DMAB

Bits 0-15: 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)..

AF1

TIM17 alternate function register 1

Offset: 0x60, size: 32, reset: 0x00000001, access: Unspecified

0/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BKINP
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)..

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)..

TISEL

TIM17 input selection register

Offset: 0x68, 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
TI1SEL
rw
Toggle fields

TI1SEL

Bits 0-3: selects TI1[0] to TI1[15] input Others: Reserved.

TIM3

0x40000400: General-purpose timer

96/114 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) CR1
0x4 (16-bit) CR2
0x8 SMCR
0xc (16-bit) DIER
0x10 (16-bit) SR
0x14 (16-bit) EGR
0x18 CCMR1_Input
0x18 CCMR1_Output
0x1c CCMR2_Input
0x1c CCMR2_Output
0x20 (16-bit) CCER
0x24 CNT
0x24 CNT_remap
0x28 (16-bit) PSC
0x2c ARR
0x34 CCR[1]
0x38 CCR[2]
0x3c CCR[3]
0x40 CCR[4]
0x48 (16-bit) DCR
0x4c (16-bit) DMAR
0x60 AF1
0x68 TISEL
Toggle registers

CR1

TIM3 control register 1

Offset: 0x0, size: 16, reset: 0x00000000, access: Unspecified

8/9 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. CEN is cleared automatically in one-pulse mode, when an update event occurs..

Allowed values:
0: Disabled: Counter disabled
1: Enabled: Counter enabled

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..

Allowed values:
0: Enabled: Update event enabled
1: Disabled: Update event disabled

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.

Allowed values:
0: AnyEvent: Any of counter overflow/underflow, setting UG, or update through slave mode, generates an update interrupt or DMA request
1: CounterOnly: Only counter overflow/underflow generates an update interrupt or DMA request

OPM

Bit 3: One-pulse mode.

Allowed values:
0: Disabled: Counter is not stopped at update event
1: Enabled: Counter stops counting at the next update event (clearing the CEN bit)

DIR

Bit 4: Direction Note: This bit is read only when the timer is configured in Center-aligned mode or Encoder mode..

Allowed values:
0: Up: Counter used as upcounter
1: Down: Counter used as downcounter

CMS

Bits 5-6: Center-aligned mode selection Note: It is not allowed to switch from edge-aligned mode to center-aligned mode as long as the counter is enabled (CEN=1).

Allowed values:
0: EdgeAligned: The counter counts up or down depending on the direction bit
1: CenterAligned1: The counter counts up and down alternatively. Output compare interrupt flags are set only when the counter is counting down.
2: CenterAligned2: The counter counts up and down alternatively. Output compare interrupt flags are set only when the counter is counting up.
3: CenterAligned3: The counter counts up and down alternatively. Output compare interrupt flags are set both when the counter is counting up or down.

ARPE

Bit 7: Auto-reload preload enable.

Allowed values:
0: Disabled: TIMx_APRR register is not buffered
1: Enabled: TIMx_APRR register is buffered

CKD

Bits 8-9: Clock division This bit-field indicates the division ratio between the timer clock (CK_INT) frequency and sampling clock used by the digital filters (ETR, TIx),.

Allowed values:
0: Div1: t_DTS = t_CK_INT
1: Div2: t_DTS = 2 × t_CK_INT
2: Div4: t_DTS = 4 × t_CK_INT

UIFREMAP

Bit 11: UIF status bit remapping.

CR2

TIM3 control register 2

Offset: 0x4, size: 16, reset: 0x00000000, access: Unspecified

2/3 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.

Allowed values:
0: OnCompare: CCx DMA request sent when CCx event occurs
1: OnUpdate: CCx DMA request sent when update event occurs

MMS

Bits 4-6: Master mode selection These bits permit 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 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..

TI1S

Bit 7: TI1 selection.

Allowed values:
0: Normal: The TIMx_CH1 pin is connected to TI1 input
1: XOR: The TIMx_CH1, CH2, CH3 pins are connected to TI1 input

SMCR

TIM3 slave mode control register

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

5/10 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
TS2
rw
SMS2
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
TS1
rw
OCCS
rw
SMS1
rw
Toggle fields

SMS1

Bits 0-2: 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. reinitializes the counter, generates an update of the registers and starts the counter. 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.

TS1

Bits 4-6: Trigger selection This bit-field selects the trigger input to be used to synchronize the counter. Others: Reserved See 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.

Allowed values:
0: NoSync: No action
1: Sync: The effect of an event on the trigger input (TRGI) is delayed to allow a perfect synchronization between the current timer and its slaves (through TRGO). It is useful if we want to synchronize several timers on a single external event.

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:.

Allowed values:
0: NoFilter: No filter, sampling is done at fDTS
1: FCK_INT_N2: fSAMPLING=fCK_INT, N=2
2: FCK_INT_N4: fSAMPLING=fCK_INT, N=4
3: FCK_INT_N8: fSAMPLING=fCK_INT, N=8
4: FDTS_Div2_N6: fSAMPLING=fDTS/2, N=6
5: FDTS_Div2_N8: fSAMPLING=fDTS/2, N=8
6: FDTS_Div4_N6: fSAMPLING=fDTS/4, N=6
7: FDTS_Div4_N8: fSAMPLING=fDTS/4, N=8
8: FDTS_Div8_N6: fSAMPLING=fDTS/8, N=6
9: FDTS_Div8_N8: fSAMPLING=fDTS/8, N=8
10: FDTS_Div16_N5: fSAMPLING=fDTS/16, N=5
11: FDTS_Div16_N6: fSAMPLING=fDTS/16, N=6
12: FDTS_Div16_N8: fSAMPLING=fDTS/16, N=8
13: FDTS_Div32_N5: fSAMPLING=fDTS/32, N=5
14: FDTS_Div32_N6: fSAMPLING=fDTS/32, N=6
15: FDTS_Div32_N8: fSAMPLING=fDTS/32, N=8

ETPS

Bits 12-13: External trigger prescaler External trigger signal ETRP frequency must be at most 1/4 of CK_INT frequency. A prescaler can be enabled to reduce ETRP frequency. It is useful when inputting fast external clocks..

Allowed values:
0: Div1: Prescaler OFF
1: Div2: ETRP frequency divided by 2
2: Div4: ETRP frequency divided by 4
3: Div8: ETRP frequency divided by 8

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). If external clock mode 1 and external clock mode 2 are enabled at the same time, the external clock input is ETRF..

Allowed values:
0: Disabled: External clock mode 2 disabled
1: Enabled: External clock mode 2 enabled. The counter is clocked by any active edge on the ETRF signal.

ETP

Bit 15: External trigger polarity This bit selects whether ETR or ETR is used for trigger operations.

Allowed values:
0: NotInverted: ETR is noninverted, active at high level or rising edge
1: Inverted: ETR is inverted, active at low level or falling edge

SMS2

Bit 16: 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. reinitializes the counter, generates an update of the registers and starts the counter. 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..

TS2

Bits 20-21: Trigger selection This bit-field selects the trigger input to be used to synchronize the counter. Others: Reserved See 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..

DIER

TIM3 DMA/Interrupt enable register

Offset: 0xc, size: 16, reset: 0x00000000, access: Unspecified

12/12 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TDE
rw
CC[4]DE
rw
CC[3]DE
rw
CC[2]DE
rw
CC[1]DE
rw
UDE
rw
TIE
rw
CC[4]IE
rw
CC[3]IE
rw
CC[2]IE
rw
CC[1]IE
rw
UIE
rw
Toggle fields

UIE

Bit 0: Update interrupt enable.

Allowed values:
0: Disabled: Update interrupt disabled
1: Enabled: Update interrupt enabled

CC[1]IE

Bit 1: Capture/Compare 1 interrupt enable.

Allowed values:
0: Disabled: CCx interrupt disabled
1: Enabled: CCx interrupt enabled

CC[2]IE

Bit 2: Capture/Compare 2 interrupt enable.

Allowed values:
0: Disabled: CCx interrupt disabled
1: Enabled: CCx interrupt enabled

CC[3]IE

Bit 3: Capture/Compare 3 interrupt enable.

Allowed values:
0: Disabled: CCx interrupt disabled
1: Enabled: CCx interrupt enabled

CC[4]IE

Bit 4: Capture/Compare 4 interrupt enable.

Allowed values:
0: Disabled: CCx interrupt disabled
1: Enabled: CCx interrupt enabled

TIE

Bit 6: Trigger interrupt enable.

Allowed values:
0: Disabled: Trigger interrupt disabled
1: Enabled: Trigger interrupt enabled

UDE

Bit 8: Update DMA request enable.

Allowed values:
0: Disabled: Update DMA request disabled
1: Enabled: Update DMA request enabled

CC[1]DE

Bit 9: Capture/Compare 1 DMA request enable.

Allowed values:
0: Disabled: CCx DMA request disabled
1: Enabled: CCx DMA request enabled

CC[2]DE

Bit 10: Capture/Compare 2 DMA request enable.

Allowed values:
0: Disabled: CCx DMA request disabled
1: Enabled: CCx DMA request enabled

CC[3]DE

Bit 11: Capture/Compare 3 DMA request enable.

Allowed values:
0: Disabled: CCx DMA request disabled
1: Enabled: CCx DMA request enabled

CC[4]DE

Bit 12: Capture/Compare 4 DMA request enable.

Allowed values:
0: Disabled: CCx DMA request disabled
1: Enabled: CCx DMA request enabled

TDE

Bit 14: Trigger DMA request enable.

Allowed values:
0: Disabled: Trigger DMA request disabled
1: Enabled: Trigger DMA request enabled

SR

TIM3 status register

Offset: 0x10, size: 16, reset: 0x00000000, access: Unspecified

10/10 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CC[4]OF
r/w0c
CC[3]OF
r/w0c
CC[2]OF
r/w0c
CC[1]OF
r/w0c
TIF
r/w0c
CC[4]IF
r/w0c
CC[3]IF
r/w0c
CC[2]IF
r/w0c
CC[1]IF
r/w0c
UIF
r/w0c
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 and if 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 the synchro control register description), if URS=0 and UDIS=0 in the TIMx_CR1 register..

Allowed values:
0: NoUpdateOccurred: No update occurred
1: UpdatePending: Update interrupt pending

CC[1]IF

Bit 1: Capture/compare 1 interrupt flag.

Allowed values:
0: NoMatch: No campture/compare has been detected
1: Match: If CC1 is an output: The content of the counter TIMx_CNT matches the content of the TIMx_CCR1 register. If CC1 is an input: The counter value has been captured in TIMx_CCR1 register.

CC[2]IF

Bit 2: Capture/compare 2 interrupt flag.

Allowed values:
0: NoMatch: No campture/compare has been detected
1: Match: If CC1 is an output: The content of the counter TIMx_CNT matches the content of the TIMx_CCR1 register. If CC1 is an input: The counter value has been captured in TIMx_CCR1 register.

CC[3]IF

Bit 3: Capture/compare 3 interrupt flag.

Allowed values:
0: NoMatch: No campture/compare has been detected
1: Match: If CC1 is an output: The content of the counter TIMx_CNT matches the content of the TIMx_CCR1 register. If CC1 is an input: The counter value has been captured in TIMx_CCR1 register.

CC[4]IF

Bit 4: Capture/compare 4 interrupt flag.

Allowed values:
0: NoMatch: No campture/compare has been detected
1: Match: If CC1 is an output: The content of the counter TIMx_CNT matches the content of the TIMx_CCR1 register. If CC1 is an input: The counter value has been captured in TIMx_CCR1 register.

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..

Allowed values:
0: NoTrigger: No trigger event occurred
1: Trigger: Trigger interrupt pending

CC[1]OF

Bit 9: Capture/Compare 1 overcapture flag.

Allowed values:
0: NoOvercapture: No overcapture has been detected
1: Overcapture: The counter value has been captured in TIMx_CCRx register while CCxIF flag was already set

CC[2]OF

Bit 10: Capture/Compare 2 overcapture flag.

Allowed values:
0: NoOvercapture: No overcapture has been detected
1: Overcapture: The counter value has been captured in TIMx_CCRx register while CCxIF flag was already set

CC[3]OF

Bit 11: Capture/Compare 3 overcapture flag.

Allowed values:
0: NoOvercapture: No overcapture has been detected
1: Overcapture: The counter value has been captured in TIMx_CCRx register while CCxIF flag was already set

CC[4]OF

Bit 12: Capture/Compare 4 overcapture flag.

Allowed values:
0: NoOvercapture: No overcapture has been detected
1: Overcapture: The counter value has been captured in TIMx_CCRx register while CCxIF flag was already set

EGR

TIM3 event generation register

Offset: 0x14, size: 16, reset: 0x00000000, access: Unspecified

6/6 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TG
w
CC[4]G
w
CC[3]G
w
CC[2]G
w
CC[1]G
w
UG
w
Toggle fields

UG

Bit 0: Update generation This bit can be set by software, it is automatically cleared by hardware..

Allowed values:
1: Update: Re-initializes the timer counter and generates an update of the registers.

CC[1]G

Bit 1: Capture/compare 1 generation.

Allowed values:
1: Trigger: If CC1 is an output: CC1IF flag is set, Corresponding interrupt or DMA request is sent if enabled. If CC1 is an input: The current value of the counter is captured in TIMx_CCR1 register.

CC[2]G

Bit 2: Capture/compare 2 generation.

Allowed values:
1: Trigger: If CC1 is an output: CC1IF flag is set, Corresponding interrupt or DMA request is sent if enabled. If CC1 is an input: The current value of the counter is captured in TIMx_CCR1 register.

CC[3]G

Bit 3: Capture/compare 3 generation.

Allowed values:
1: Trigger: If CC1 is an output: CC1IF flag is set, Corresponding interrupt or DMA request is sent if enabled. If CC1 is an input: The current value of the counter is captured in TIMx_CCR1 register.

CC[4]G

Bit 4: Capture/compare 4 generation.

Allowed values:
1: Trigger: If CC1 is an output: CC1IF flag is set, Corresponding interrupt or DMA request is sent if enabled. If CC1 is an input: The current value of the counter is captured in TIMx_CCR1 register.

TG

Bit 6: Trigger generation This bit is set by software in order to generate an event, it is automatically cleared by hardware..

Allowed values:
1: Trigger: The TIF flag is set in TIMx_SR register. Related interrupt or DMA transfer can occur if enabled.

CCMR1_Input

TIM3 capture/compare mode register 1 [alternate]

Offset: 0x18, 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
IC[2]F
rw
IC[2]PSC
rw
CC2S
rw
IC[1]F
rw
IC[1]PSC
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)..

Allowed values:
1: TI1: CC1 channel is configured as input, IC1 is mapped on TI1
2: TI2: CC1 channel is configured as input, IC1 is mapped on TI2
3: TRC: CC1 channel is configured as input, IC1 is mapped on TRC

IC[1]PSC

Bits 2-3: Input capture 1 prescaler.

Allowed values:
0: NoPrescaler: No prescaler, capture is done each time an edge is detected on the capture input
1: TwoEvents: Capture is done once every 2 events
2: FourEvents: Capture is done once every 4 events
3: EightEvents: Capture is done once every 8 events

IC[1]F

Bits 4-7: Input capture 1 filter.

Allowed values:
0: NoFilter: No filter, sampling is done at fDTS
1: FCK_INT_N2: fSAMPLING=fCK_INT, N=2
2: FCK_INT_N4: fSAMPLING=fCK_INT, N=4
3: FCK_INT_N8: fSAMPLING=fCK_INT, N=8
4: FDTS_Div2_N6: fSAMPLING=fDTS/2, N=6
5: FDTS_Div2_N8: fSAMPLING=fDTS/2, N=8
6: FDTS_Div4_N6: fSAMPLING=fDTS/4, N=6
7: FDTS_Div4_N8: fSAMPLING=fDTS/4, N=8
8: FDTS_Div8_N6: fSAMPLING=fDTS/8, N=6
9: FDTS_Div8_N8: fSAMPLING=fDTS/8, N=8
10: FDTS_Div16_N5: fSAMPLING=fDTS/16, N=5
11: FDTS_Div16_N6: fSAMPLING=fDTS/16, N=6
12: FDTS_Div16_N8: fSAMPLING=fDTS/16, N=8
13: FDTS_Div32_N5: fSAMPLING=fDTS/32, N=5
14: FDTS_Div32_N6: fSAMPLING=fDTS/32, N=6
15: FDTS_Div32_N8: fSAMPLING=fDTS/32, N=8

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)..

Allowed values:
1: TI2: CC2 channel is configured as input, IC2 is mapped on TI2
2: TI1: CC2 channel is configured as input, IC2 is mapped on TI1
3: TRC: CC2 channel is configured as input, IC2 is mapped on TRC

IC[2]PSC

Bits 10-11: Input capture 2 prescaler.

Allowed values:
0: NoPrescaler: No prescaler, capture is done each time an edge is detected on the capture input
1: TwoEvents: Capture is done once every 2 events
2: FourEvents: Capture is done once every 4 events
3: EightEvents: Capture is done once every 8 events

IC[2]F

Bits 12-15: Input capture 2 filter.

Allowed values:
0: NoFilter: No filter, sampling is done at fDTS
1: FCK_INT_N2: fSAMPLING=fCK_INT, N=2
2: FCK_INT_N4: fSAMPLING=fCK_INT, N=4
3: FCK_INT_N8: fSAMPLING=fCK_INT, N=8
4: FDTS_Div2_N6: fSAMPLING=fDTS/2, N=6
5: FDTS_Div2_N8: fSAMPLING=fDTS/2, N=8
6: FDTS_Div4_N6: fSAMPLING=fDTS/4, N=6
7: FDTS_Div4_N8: fSAMPLING=fDTS/4, N=8
8: FDTS_Div8_N6: fSAMPLING=fDTS/8, N=6
9: FDTS_Div8_N8: fSAMPLING=fDTS/8, N=8
10: FDTS_Div16_N5: fSAMPLING=fDTS/16, N=5
11: FDTS_Div16_N6: fSAMPLING=fDTS/16, N=6
12: FDTS_Div16_N8: fSAMPLING=fDTS/16, N=8
13: FDTS_Div32_N5: fSAMPLING=fDTS/32, N=5
14: FDTS_Div32_N6: fSAMPLING=fDTS/32, N=6
15: FDTS_Div32_N8: fSAMPLING=fDTS/32, N=8

CCMR1_Output

TIM3 capture/compare mode register 1 [alternate]

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

12/12 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OC[2]M_3
rw
OC[1]M_3
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OC[2]CE
rw
OC[2]M
rw
OC[2]PE
rw
OC[2]FE
rw
CC[2]S
rw
OC[1]CE
rw
OC[1]M
rw
OC[1]PE
rw
OC[1]FE
rw
CC[1]S
rw
Toggle fields

CC[1]S

Bits 0-1: Capture/Compare 1 selection.

Allowed values:
0: Output: CCx channel is configured as output

OC[1]FE

Bit 2: Output compare 1 fast enable.

Allowed values:
0: Disabled: Fast output disabled
1: Enabled: Fast output enabled

OC[1]PE

Bit 3: Output compare 1 preload enable.

Allowed values:
0: Disabled: Preload register on CCRx disabled. New values written to CCRx are taken into account immediately
1: Enabled: Preload register on CCRx enabled. Preload value is loaded into active register on each update event

OC[1]M

Bits 4-6: Output compare 1 mode.

Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1

OC[1]CE

Bit 7: Output compare 1 clear enable.

Allowed values:
0: Disabled: OCxRef is not affected by the ETRF signal
1: Enabled: OCxRef is cleared as soon as a High level is detected on ETRF signal

CC[2]S

Bits 8-9: Capture/Compare 2 selection.

Allowed values:
0: Output: CCx channel is configured as output

OC[2]FE

Bit 10: Output compare 2 fast enable.

Allowed values:
0: Disabled: Fast output disabled
1: Enabled: Fast output enabled

OC[2]PE

Bit 11: Output compare 2 preload enable.

Allowed values:
0: Disabled: Preload register on CCRx disabled. New values written to CCRx are taken into account immediately
1: Enabled: Preload register on CCRx enabled. Preload value is loaded into active register on each update event

OC[2]M

Bits 12-14: Output compare 2 mode.

Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1

OC[2]CE

Bit 15: Output compare 2 clear enable.

Allowed values:
0: Disabled: OCxRef is not affected by the ETRF signal
1: Enabled: OCxRef is cleared as soon as a High level is detected on ETRF signal

OC[1]M_3

Bit 16: Output compare 1 mode, bit 3.

Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)

OC[2]M_3

Bit 24: Output compare 2 mode, bit 3.

Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)

CCMR2_Input

TIM3 capture/compare mode register 2 [alternate]

Offset: 0x1c, 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
IC[4]F
rw
IC[4]PSC
rw
CC4S
rw
IC[3]F
rw
IC[3]PSC
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)..

Allowed values:
1: TI3: CC3 channel is configured as input, IC3 is mapped on TI3
2: TI4: CC3 channel is configured as input, IC3 is mapped on TI4
3: TRC: CC3 channel is configured as input, IC3 is mapped on TRC

IC[3]PSC

Bits 2-3: Input capture 3 prescaler.

Allowed values:
0: NoPrescaler: No prescaler, capture is done each time an edge is detected on the capture input
1: TwoEvents: Capture is done once every 2 events
2: FourEvents: Capture is done once every 4 events
3: EightEvents: Capture is done once every 8 events

IC[3]F

Bits 4-7: Input capture 3 filter.

Allowed values:
0: NoFilter: No filter, sampling is done at fDTS
1: FCK_INT_N2: fSAMPLING=fCK_INT, N=2
2: FCK_INT_N4: fSAMPLING=fCK_INT, N=4
3: FCK_INT_N8: fSAMPLING=fCK_INT, N=8
4: FDTS_Div2_N6: fSAMPLING=fDTS/2, N=6
5: FDTS_Div2_N8: fSAMPLING=fDTS/2, N=8
6: FDTS_Div4_N6: fSAMPLING=fDTS/4, N=6
7: FDTS_Div4_N8: fSAMPLING=fDTS/4, N=8
8: FDTS_Div8_N6: fSAMPLING=fDTS/8, N=6
9: FDTS_Div8_N8: fSAMPLING=fDTS/8, N=8
10: FDTS_Div16_N5: fSAMPLING=fDTS/16, N=5
11: FDTS_Div16_N6: fSAMPLING=fDTS/16, N=6
12: FDTS_Div16_N8: fSAMPLING=fDTS/16, N=8
13: FDTS_Div32_N5: fSAMPLING=fDTS/32, N=5
14: FDTS_Div32_N6: fSAMPLING=fDTS/32, N=6
15: FDTS_Div32_N8: fSAMPLING=fDTS/32, N=8

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)..

Allowed values:
1: TI4: CC4 channel is configured as input, IC4 is mapped on TI4
2: TI3: CC4 channel is configured as input, IC4 is mapped on TI3
3: TRC: CC4 channel is configured as input, IC4 is mapped on TRC

IC[4]PSC

Bits 10-11: Input capture 4 prescaler.

Allowed values:
0: NoPrescaler: No prescaler, capture is done each time an edge is detected on the capture input
1: TwoEvents: Capture is done once every 2 events
2: FourEvents: Capture is done once every 4 events
3: EightEvents: Capture is done once every 8 events

IC[4]F

Bits 12-15: Input capture 4 filter.

Allowed values:
0: NoFilter: No filter, sampling is done at fDTS
1: FCK_INT_N2: fSAMPLING=fCK_INT, N=2
2: FCK_INT_N4: fSAMPLING=fCK_INT, N=4
3: FCK_INT_N8: fSAMPLING=fCK_INT, N=8
4: FDTS_Div2_N6: fSAMPLING=fDTS/2, N=6
5: FDTS_Div2_N8: fSAMPLING=fDTS/2, N=8
6: FDTS_Div4_N6: fSAMPLING=fDTS/4, N=6
7: FDTS_Div4_N8: fSAMPLING=fDTS/4, N=8
8: FDTS_Div8_N6: fSAMPLING=fDTS/8, N=6
9: FDTS_Div8_N8: fSAMPLING=fDTS/8, N=8
10: FDTS_Div16_N5: fSAMPLING=fDTS/16, N=5
11: FDTS_Div16_N6: fSAMPLING=fDTS/16, N=6
12: FDTS_Div16_N8: fSAMPLING=fDTS/16, N=8
13: FDTS_Div32_N5: fSAMPLING=fDTS/32, N=5
14: FDTS_Div32_N6: fSAMPLING=fDTS/32, N=6
15: FDTS_Div32_N8: fSAMPLING=fDTS/32, N=8

CCMR2_Output

TIM3 capture/compare mode register 2 [alternate]

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

12/12 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
OC[4]M_3
rw
OC[3]M_3
rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OC[4]CE
rw
OC[4]M
rw
OC[4]PE
rw
OC[4]FE
rw
CC[4]S
rw
OC[3]CE
rw
OC[3]M
rw
OC[3]PE
rw
OC[3]FE
rw
CC[3]S
rw
Toggle fields

CC[3]S

Bits 0-1: Capture/Compare 3 selection.

Allowed values:
0: Output: CCx channel is configured as output

OC[3]FE

Bit 2: Output compare 3 fast enable.

Allowed values:
0: Disabled: Fast output disabled
1: Enabled: Fast output enabled

OC[3]PE

Bit 3: Output compare 3 preload enable.

Allowed values:
0: Disabled: Preload register on CCRx disabled. New values written to CCRx are taken into account immediately
1: Enabled: Preload register on CCRx enabled. Preload value is loaded into active register on each update event

OC[3]M

Bits 4-6: Output compare 3 mode.

Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1

OC[3]CE

Bit 7: Output compare 3 clear enable.

Allowed values:
0: Disabled: OCxRef is not affected by the ETRF signal
1: Enabled: OCxRef is cleared as soon as a High level is detected on ETRF signal

CC[4]S

Bits 8-9: Capture/Compare 4 selection.

Allowed values:
0: Output: CCx channel is configured as output

OC[4]FE

Bit 10: Output compare 4 fast enable.

Allowed values:
0: Disabled: Fast output disabled
1: Enabled: Fast output enabled

OC[4]PE

Bit 11: Output compare 4 preload enable.

Allowed values:
0: Disabled: Preload register on CCRx disabled. New values written to CCRx are taken into account immediately
1: Enabled: Preload register on CCRx enabled. Preload value is loaded into active register on each update event

OC[4]M

Bits 12-14: Output compare 4 mode.

Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1

OC[4]CE

Bit 15: Output compare 4 clear enable.

Allowed values:
0: Disabled: OCxRef is not affected by the ETRF signal
1: Enabled: OCxRef is cleared as soon as a High level is detected on ETRF signal

OC[3]M_3

Bit 16: Output compare 3 mode, bit 3.

Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)

OC[4]M_3

Bit 24: Output compare 4 mode, bit 3.

Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)

CCER

TIM3 capture/compare enable register

Offset: 0x20, size: 16, reset: 0x00000000, access: Unspecified

8/12 fields covered.

Toggle fields

CC[1]E

Bit 0: Capture/Compare 1 output enable.

Allowed values:
0: Disabled: Capture disabled
1: Enabled: Capture enabled

CC[1]P

Bit 1: Capture/Compare 1 output Polarity.

Allowed values:
0: RisingEdge: Noninverted/rising edge
1: FallingEdge: Inverted/falling edge

CC[1]NP

Bit 3: Capture/Compare 1 output Polarity.

CC[2]E

Bit 4: Capture/Compare 2 output enable.

Allowed values:
0: Disabled: Capture disabled
1: Enabled: Capture enabled

CC[2]P

Bit 5: Capture/Compare 2 output Polarity.

Allowed values:
0: RisingEdge: Noninverted/rising edge
1: FallingEdge: Inverted/falling edge

CC[2]NP

Bit 7: Capture/Compare 2 output Polarity.

CC[3]E

Bit 8: Capture/Compare 3 output enable.

Allowed values:
0: Disabled: Capture disabled
1: Enabled: Capture enabled

CC[3]P

Bit 9: Capture/Compare 3 output Polarity.

Allowed values:
0: RisingEdge: Noninverted/rising edge
1: FallingEdge: Inverted/falling edge

CC[3]NP

Bit 11: Capture/Compare 3 output Polarity.

CC[4]E

Bit 12: Capture/Compare 4 output enable.

Allowed values:
0: Disabled: Capture disabled
1: Enabled: Capture enabled

CC[4]P

Bit 13: Capture/Compare 4 output Polarity.

Allowed values:
0: RisingEdge: Noninverted/rising edge
1: FallingEdge: Inverted/falling edge

CC[4]NP

Bit 15: Capture/Compare 4 output Polarity.

CNT

TIM3 counter [alternate]

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
CNT
rw
Toggle fields

CNT

Bits 0-15: counter value.

Allowed values: 0x0-0xffff

CNT_remap

TIM3 counter [alternate]

Offset: 0x24, 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
UIFCPY
rw
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.

PSC

TIM3 prescaler

Offset: 0x28, 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
PSC
rw
Toggle fields

PSC

Bits 0-15: Prescaler value The counter clock frequency CK_CNT is equal to fCK_PSC / (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)..

Allowed values: 0x0-0xffff

ARR

TIM3 auto-reload register

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

1/1 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 for more details about ARR update and behavior. The counter is blocked while the auto-reload value is null..

Allowed values: 0x0-0xffff

CCR[1]

capture/compare 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
CCR
rw
Toggle fields

CCR

Bits 0-15: Capture/Compare value.

Allowed values: 0x0-0xffff

CCR[2]

capture/compare 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
CCR
rw
Toggle fields

CCR

Bits 0-15: Capture/Compare value.

Allowed values: 0x0-0xffff

CCR[3]

capture/compare 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
CCR
rw
Toggle fields

CCR

Bits 0-15: Capture/Compare value.

Allowed values: 0x0-0xffff

CCR[4]

capture/compare 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
CCR
rw
Toggle fields

CCR

Bits 0-15: Capture/Compare value.

Allowed values: 0x0-0xffff

DCR

TIM3 DMA control register

Offset: 0x48, size: 16, reset: 0x00000000, access: Unspecified

2/2 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-bit 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: ... Example: Let us consider the following transfer: DBL = 7 transfers & DBA = TIMx_CR1. In this case the transfer is done to/from 7 registers starting from the TIMx_CR1 address..

Allowed values: 0x0-0x1f

DBL

Bits 8-12: DMA burst length This 5-bit vector defines the number of DMA transfers (the timer recognizes a burst transfer when a read or a write access is done to the TIMx_DMAR address). ....

Allowed values: 0x0-0x12

DMAR

TIM3 DMA address for full transfer

Offset: 0x4c, 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
DMAB
rw
Toggle fields

DMAB

Bits 0-15: 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)..

AF1

TIM3 alternate function option register 1

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
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 These bits select the ETR input source. Others: Reserved.

TISEL

TIM3 timer input selection register

Offset: 0x68, 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
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 These bits select the TI1[0] to TI1[15] input source. Others: Reserved.

TI2SEL

Bits 8-11: TI2[0] to TI2[15] input selection These bits select the TI2[0] to TI2[15] input source. Others: Reserved.

TI3SEL

Bits 16-19: TI3[0] to TI3[15] input selection These bits select the TI3[0] to TI3[15] input source. Others: Reserved.

USART1

0x40013800: USART register block

124/124 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 CR1
0x4 CR2
0x8 CR3
0xc BRR
0x10 GTPR
0x14 RTOR
0x18 RQR
0x1c ISR
0x20 ICR
0x24 RDR
0x28 TDR
0x2c PRESC
Toggle registers

CR1

USART control register 1 [alternate]

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

24/24 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
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. The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit. In Smartcard mode, (SCEN = 1), the CK is always available when CLKEN = 1, regardless of the UE bit value..

Allowed values:
0: Disabled: UART is disabled
1: Enabled: UART is enabled

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 exit from low-power mode. If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page 1985..

Allowed values:
0: Disabled: USART not able to wake up the MCU from Stop mode
1: Enabled: USART able to wake up the MCU from Stop mode

RE

Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..

Allowed values:
0: Disabled: Receiver is disabled
1: Enabled: Receiver is enabled

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. In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..

Allowed values:
0: Disabled: Transmitter is disabled
1: Enabled: Transmitter is enabled

IDLEIE

Bit 4: IDLE interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt is disabled
1: Enabled: Interrupt is generated whenever IDLE=1 in the ISR register

RXNEIE

Bit 5: RXFIFO not empty interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt is disabled
1: Enabled: Interrupt is generated whenever ORE=1 or RXNE=1 in the ISR register

TCIE

Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt is disabled
1: Enabled: Interrupt is generated whenever TC=1 in the ISR register

TXEIE

Bit 7: TXFIFO not full interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt is disabled
1: Enabled: Interrupt is generated whenever TXE=1 in the ISR register

PEIE

Bit 8: PE interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt is disabled
1: Enabled: Interrupt is generated whenever PE=1 in the ISR register

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)..

Allowed values:
0: Even: Even parity
1: Odd: Odd parity

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)..

Allowed values:
0: Disabled: Parity control disabled
1: Enabled: Parity control enabled

WAKE

Bit 11: Receiver wakeup method This bit determines the USART wakeup method from Mute mode. It is set or cleared by software. This bitfield can only be written when the USART is disabled (UE = 0)..

Allowed values:
0: Idle: Idle line
1: Address: Address mask

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)..

Allowed values:
0: Bit8: 1 start bit, 8 data bits, n stop bits
1: Bit9: 1 start bit, 9 data bits, n stop bits

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..

Allowed values:
0: Disabled: Receiver in active mode permanently
1: Enabled: Receiver can switch between mute mode and active mode

CMIE

Bit 14: Character match interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt is disabled
1: Enabled: Interrupt is generated when the CMF bit is set in the ISR register

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..

Allowed values:
0: Oversampling16: Oversampling by 16
1: Oversampling8: Oversampling by 8

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 ..

Allowed values: 0x0-0x1f

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 ..

Allowed values: 0x0-0x1f

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. ..

Allowed values:
0: Disabled: Interrupt is inhibited
1: Enabled: An USART interrupt is generated when the RTOF bit is set in the ISR register

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 ..

Allowed values:
0: Disabled: Interrupt is inhibited
1: Enabled: A USART interrupt is generated when the EOBF flag is set in the ISR register

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..

Allowed values:
0: M0: Use M0 to set the data bits
1: Bit7: 1 start bit, 7 data bits, n stop bits

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..

Allowed values:
0: Disabled: FIFO mode is disabled
1: Enabled: FIFO mode is enabled

TXFEIE

Bit 30: TXFIFO empty interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when TXFE = 1 in the USART_ISR register

RXFFIE

Bit 31: RXFIFO Full interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when RXFF = 1 in the USART_ISR register

CR2

USART control register 2

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

20/20 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 ..

Allowed values:
0: Disabled: Slave mode disabled
1: Enabled: Slave mode enabled

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 ..

Allowed values:
0: Disabled: SPI slave selection depends on NSS input pin
1: Enabled: SPI slave is always selected and NSS input pin is ignored

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..

Allowed values:
0: Bit4: 4-bit address detection
1: Bit7: 7-bit address detection

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 ..

Allowed values:
0: Bit10: 10-bit break detection
1: Bit11: 11-bit break detection

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 ..

Allowed values:
0: Disabled: Interrupt is inhibited
1: Enabled: An interrupt is generated whenever LBDF=1 in the ISR register

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 ..

Allowed values:
0: NotOutput: The clock pulse of the last data bit is not output to the CK pin
1: Output: The clock pulse of the last data bit is output to the CK pin

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 and ) 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 ..

Allowed values:
0: First: The first clock transition is the first data capture edge
1: Second: The second clock transition is the first data capture edge

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 ..

Allowed values:
0: Low: Steady low value on CK pin outside transmission window
1: High: Steady high value on CK pin outside transmission window

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 . 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 UE = 1.

Allowed values:
0: Disabled: CK pin disabled
1: Enabled: CK pin enabled

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)..

Allowed values:
0: Stop1: 1 stop bit
1: Stop0p5: 0.5 stop bit
2: Stop2: 2 stop bit
3: Stop1p5: 1.5 stop bit

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 ..

Allowed values:
0: Disabled: LIN mode disabled
1: Enabled: LIN mode enabled

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)..

Allowed values:
0: Standard: TX/RX pins are used as defined in standard pinout
1: Swapped: The TX and RX pins functions are swapped

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)..

Allowed values:
0: Standard: RX pin signal works using the standard logic levels
1: Inverted: RX pin signal values are inverted

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)..

Allowed values:
0: Standard: TX pin signal works using the standard logic levels
1: Inverted: TX pin signal values are inverted

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)..

Allowed values:
0: Positive: Logical data from the data register are send/received in positive/direct logic
1: Negative: Logical data from the data register are send/received in negative/inverse logic

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)..

Allowed values:
0: LSB: data is transmitted/received with data bit 0 first, following the start bit
1: MSB: data is transmitted/received with MSB (bit 7/8/9) first, following the start bit

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 ..

Allowed values:
0: Disabled: Auto baud rate detection is disabled
1: Enabled: Auto baud rate detection is enabled

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) If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..

Allowed values:
0: Start: Measurement of the start bit is used to detect the baud rate
1: Edge: Falling edge to falling edge measurement
2: Frame7F: 0x7F frame detection
3: Frame55: 0x55 frame detection

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 ..

Allowed values:
0: Disabled: Receiver timeout feature disabled
1: Enabled: Receiver timeout feature enabled

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 wakeup 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 wakeup 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 (RE = 0) or when the USART is disabled (UE = 0)..

Allowed values: 0x0-0xff

CR3

USART control register 3

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

24/24 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
WUS
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 = 1 or UDR = 1 in the USART_ISR register)..

Allowed values:
0: Disabled: Interrupt is inhibited
1: Enabled: An interrupt is generated when FE=1 or ORE=1 or NF=1 in the 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 ..

Allowed values:
0: Disabled: IrDA disabled
1: Enabled: IrDA enabled

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 ..

Allowed values:
0: Normal: Normal mode
1: LowPower: Low-power mode

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)..

Allowed values:
0: NotSelected: Half duplex mode is not selected
1: Selected: Half duplex mode is selected

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 ..

Allowed values:
0: Disabled: NACK transmission in case of parity error is disabled
1: Enabled: NACK transmission during parity error is enabled

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 ..

Allowed values:
0: Disabled: Smartcard Mode disabled
1: Enabled: Smartcard Mode enabled

DMAR

Bit 6: DMA enable receiver This bit is set/reset by software.

Allowed values:
0: Disabled: DMA mode is disabled for reception
1: Enabled: DMA mode is enabled for reception

DMAT

Bit 7: DMA enable transmitter This bit is set/reset by software.

Allowed values:
0: Disabled: DMA mode is disabled for transmission
1: Enabled: DMA mode is enabled for transmission

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 ..

Allowed values:
0: Disabled: RTS hardware flow control disabled
1: Enabled: RTS output enabled, data is only requested when there is space in the receive buffer

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 ..

Allowed values:
0: Disabled: CTS hardware flow control disabled
1: Enabled: CTS mode enabled, data is only transmitted when the CTS input is asserted

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 ..

Allowed values:
0: Disabled: Interrupt is inhibited
1: Enabled: An interrupt is generated whenever CTSIF=1 in the ISR register

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)..

Allowed values:
0: Sample3: Three sample bit method
1: Sample1: One sample bit method

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 is 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.

Allowed values:
0: Enabled: Overrun Error Flag, ORE, is set when received data is not read before receiving new data
1: Disabled: Overrun functionality is disabled. If new data is received while the RXNE flag is still set the ORE flag is not set and the new received data overwrites the previous content of the RDR register

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..

Allowed values:
0: NotDisabled: DMA is not disabled in case of reception error
1: Disabled: DMA is disabled following a reception 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. ..

Allowed values:
0: Disabled: DE function is disabled
1: Enabled: The DE signal is output on the RTS pin

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 ..

Allowed values:
0: High: DE signal is active high
1: Low: DE signal is active low

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. Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..

Allowed values: 0x0-0x7

WUS

Bits 20-21: Wakeup from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (Wakeup from low-power mode flag). This bitfield can only be written when the USART is disabled (UE = 0). If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page 1985..

Allowed values:
0: Address: WUF active on address match
2: Start: WuF active on Start bit detection
3: RXNE: WUF active on RXNE

WUFIE

Bit 22: Wakeup 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. If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page 1985..

Allowed values:
0: Disabled: Interrupt is inhibited
1: Enabled: An USART interrupt is generated whenever WUF=1 in the ISR register

TXFTIE

Bit 23: TXFIFO threshold interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when Transmit FIFO reaches the threshold programmed in TXFTCFG

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 ..

Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated whenever TCBGT=1 in the USART_ISR register

RXFTCFG

Bits 25-27: Receive FIFO threshold configuration Remaining combinations: Reserved.

Allowed values:
0: Depth_1_8: RXFIFO reaches 1/8 of its depth
1: Depth_1_4: RXFIFO reaches 1/4 of its depth
2: Depth_1_2: RXFIFO reaches 1/2 of its depth
3: Depth_3_4: RXFIFO reaches 3/4 of its depth
4: Depth_7_8: RXFIFO reaches 7/8 of its depth
5: Full: RXFIFO becomes full

RXFTIE

Bit 28: RXFIFO threshold interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when Receive FIFO reaches the threshold programmed in RXFTCFG

TXFTCFG

Bits 29-31: TXFIFO threshold configuration Remaining combinations: Reserved.

Allowed values:
0: Depth_1_8: TXFIFO reaches 1/8 of its depth
1: Depth_1_4: TXFIFO reaches 1/4 of its depth
2: Depth_1_2: TXFIFO reaches 1/2 of its depth
3: Depth_3_4: TXFIFO reaches 3/4 of its depth
4: Depth_7_8: TXFIFO reaches 7/8 of its depth
5: Empty: TXFIFO becomes empty

BRR

USART baud rate register

Offset: 0xc, 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
BRR
rw
Toggle fields

BRR

Bits 0-15: USART baud rate BRR[15:4] BRR[15:4] = 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..

Allowed values: 0x0-0xffff

GTPR

USART guard time and prescaler register

Offset: 0x10, 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
GT
rw
PSC
rw
Toggle fields

PSC

Bits 0-7: Prescaler value In IrDA low-power and normal IrDA mode: PSC[7:0] = IrDA Normal and Low-Power baud rate PSC[7:0] is used to program 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): In Smartcard mode: PSC[4:0] = Prescaler value PSC[4:0] is used to program 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. This bitfield is reserved and forced by hardware to 0 when the Smartcard and IrDA modes are not supported. Refer to ..

Allowed values: 0x0-0xff

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 ..

Allowed values: 0x0-0xff

RTOR

USART receiver timeout register

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

2/2 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 bits during which there is no activity on the RX line. 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..

Allowed values: 0x0-0xffffff

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..

Allowed values: 0x0-0xff

RQR

USART request register

Offset: 0x18, 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
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 ..

Allowed values:
1: Request: resets the ABRF flag in the USART_ISR and request an automatic baud rate measurement on the next received data frame

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 should wait for the TXE flag assertion before setting the SBKRQ bit..

Allowed values:
1: Break: sets the SBKF flag and request to send a BREAK on the line, as soon as the transmit machine is available

MMRQ

Bit 2: Mute mode request Writing 1 to this bit puts the USART in Mute mode and resets the RWU flag..

Allowed values:
1: Mute: Puts the USART in mute mode and sets 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..

Allowed values:
1: Discard: clears the RXNE flag. This allows to discard the received data without reading it, 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..

Allowed values:
1: Discard: Set the TXE flags. This allows to discard the transmit data

ISR

USART interrupt and status register [alternate]

Offset: 0x1c, size: 32, reset: 0x008000C0, 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 receiver 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..

Allowed values:
0: NoError: No parity error
1: Error: Parity error

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 EIE = 1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..

Allowed values:
0: NoError: No Framing error is detected
1: Error: Framing error or break character is detected

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 NECF 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. 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 Tolerance of the USART receiver to clock deviation on page 2012). This error is associated with the character in the USART_RDR..

Allowed values:
0: NoNoise: No noise is detected
1: Noise: Noise is detected

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 or EIE = 1 in the USART_CR1 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. This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the USART_CR3 register..

Allowed values:
0: NoOverrun: No Overrun error
1: Overrun: Overrun error is detected

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). 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..

Allowed values:
0: NoIdle: No Idle Line is detected
1: Idle: Idle Line is detected

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..

Allowed values:
0: NoData: Data is not received
1: DataReady: Received data is ready to be read

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. It is set by hardware when the transmission of a frame containing data is complete and when TXFE is set. An interrupt is generated if TCIE = 1 in the USART_CR1 register. TC bit is is cleared by software, by writing 1 to the TCCF in the USART_ICR register or by a write to the USART_TDR register. Note: If TE bit is reset and no transmission is on going, the TC bit is immediately set..

Allowed values:
0: TxNotComplete: Transmission is not complete
1: TxComplete: Transmission is complete

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 should be checked prior to writing in TXFIFO (TXFNF and TXFE are set at the same time). This bit is used during single buffer transmission..

Allowed values:
0: Full: Transmit FIFO is full
1: NotFull: Transmit FIFO is not full

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 ..

Allowed values:
0: NotDetected: LIN break not detected
1: Detected: LIN break detected

CTSIF

Bit 9: CTS interrupt flag This bit is set by hardware when the nCTS 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..

Allowed values:
0: NotChanged: No change occurred on the CTS status line
1: Changed: A change occurred on the CTS status line

CTS

Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the nCTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

Allowed values:
0: Set: CTS line set
1: Reset: CTS line reset

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. 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. If the USART does not support the Receiver timeout feature, this bit is reserved and kept at reset value..

Allowed values:
0: NotReached: Timeout value not reached
1: Reached: Timeout value reached without any data reception

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 the EOBIE = 1 in the USART_CR1 register. It is cleared by software, writing 1 to the EOBCF in the USART_ICR register. Note: If Smartcard mode is not supported, this bit is reserved and kept at reset value. Refer to ..

Allowed values:
0: NotReached: End of Block not reached
1: Reached: End of Block (number of characters) reached

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 ..

Allowed values:
0: NoUnderrun: No underrun error
1: Underrun: underrun error

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)..

Allowed values:
0: Idle: USART is idle (no reception)
1: Busy: Reception on going

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..

Allowed values:
0: NoMatch: No Character match detected
1: Match: Character match detected

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..

Allowed values:
0: NoBreak: No break character transmitted
1: Break: Break character transmitted

RWU

Bit 19: Receiver wakeup from Mute mode This bit indicates if the USART is in Mute mode. It is cleared/set by hardware when a wakeup/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the USART_CR1 register. When wakeup 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 wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..

Allowed values:
0: Active: Receiver in Active mode
1: Mute: Receiver in Mute mode

WUF

Bit 20: Wakeup from low-power mode flag This bit is set by hardware, when a wakeup 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. If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..

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 wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..

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..

Allowed values:
0: NotEmpty: TXFIFO not empty.
1: Empty: TXFIFO empty.

RXFF

Bit 24: RXFIFO full This bit is set by hardware when the number of received data corresponds to RXFIFO size + 1 (RXFIFO full + 1 data in the USART_RDR register. An interrupt is generated if the RXFFIE bit = 1 in the USART_CR1 register..

Allowed values:
0: NotFull: RXFIFO not full.
1: Full: RXFIFO Full.

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 on page 1985..

Allowed values:
0: NotCompleted: Transmission is not complete or transmission is complete unsuccessfully (i.e. a NACK is received from the card)
1: Completed: Transmission is complete successfully (before Guard time completion and there is no NACK from the smart card)

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..

Allowed values:
0: NotReached: Receive FIFO does not reach the programmed threshold.
1: Reached: Receive FIFO reached the programmed threshold.

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..

Allowed values:
0: NotReached: TXFIFO does not reach the programmed threshold.
1: Reached: TXFIFO reached the programmed threshold.

ICR

USART interrupt flag clear register

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

15/15 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
WUCF
w1c
CMCF
w1c
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UDRCF
w1c
EOBCF
w1c
RTOCF
w1c
CTSCF
w1c
LBDCF
w1c
TCBGTCF
w1c
TCCF
w1c
TXFECF
w1c
IDLECF
w1c
ORECF
w1c
NECF
w1c
FECF
w1c
PECF
w1c
Toggle fields

PECF

Bit 0: Parity error clear flag Writing 1 to this bit clears the PE flag in the USART_ISR register..

Allowed values:
1: Clear: Clears the PE flag in the ISR register

FECF

Bit 1: Framing error clear flag Writing 1 to this bit clears the FE flag in the USART_ISR register..

Allowed values:
1: Clear: Clears the FE flag in the ISR register

NECF

Bit 2: Noise detected clear flag Writing 1 to this bit clears the NE flag in the USART_ISR register..

Allowed values:
1: Clear: Clears the NF flag in the ISR register

ORECF

Bit 3: Overrun error clear flag Writing 1 to this bit clears the ORE flag in the USART_ISR register..

Allowed values:
1: Clear: Clears the ORE flag in the ISR register

IDLECF

Bit 4: Idle line detected clear flag Writing 1 to this bit clears the IDLE flag in the USART_ISR register..

Allowed values:
1: Clear: Clears the IDLE flag in the ISR register

TXFECF

Bit 5: TXFIFO empty clear flag Writing 1 to this bit clears the TXFE flag in the USART_ISR register..

Allowed values:
1: Clear: Clear the TXFE flag in the ISR register

TCCF

Bit 6: Transmission complete clear flag Writing 1 to this bit clears the TC flag in the USART_ISR register..

Allowed values:
1: Clear: Clears the TC flag in the 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..

Allowed values:
1: Clear: Clear the TCBGT flag in the 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 ..

Allowed values:
1: Clear: Clears the LBDF flag in the ISR register

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 ..

Allowed values:
1: Clear: Clears the CTSIF flag in the ISR register

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 page 1985..

Allowed values:
1: Clear: Clears the RTOF flag in the ISR register

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 ..

Allowed values:
1: Clear: Clears the EOBF flag in the ISR register

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.

Allowed values:
1: Clear: Clear the UDR flag in the ISR register

CMCF

Bit 17: Character match clear flag Writing 1 to this bit clears the CMF flag in the USART_ISR register..

Allowed values:
1: Clear: Clears the CMF flag in the ISR register

WUCF

Bit 20: Wakeup 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 wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page 1985..

Allowed values:
1: Clear: Clears the WUF flag in the ISR register

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 ). When receiving with the parity enabled, the value read in the MSB bit is the received parity bit..

Allowed values: 0x0-0x1ff

TDR

USART transmit data register

Offset: 0x28, 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
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 ). 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..

Allowed values: 0x0-0x1ff

PRESC

USART prescaler 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
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 1011 i.e. input clock divided by 256..

Allowed values:
0: Div1: Input clock divided by 1
1: Div2: Input clock divided by 2
2: Div4: Input clock divided by 4
3: Div6: Input clock divided by 6
4: Div8: Input clock divided by 8
5: Div10: Input clock divided by 10
6: Div12: Input clock divided by 12
7: Div16: Input clock divided by 16
8: Div32: Input clock divided by 32
9: Div64: Input clock divided by 64
10: Div128: Input clock divided by 128
11: Div256: Input clock divided by 256

USART2

0x40004400: USART register block

124/124 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 CR1
0x4 CR2
0x8 CR3
0xc BRR
0x10 GTPR
0x14 RTOR
0x18 RQR
0x1c ISR
0x20 ICR
0x24 RDR
0x28 TDR
0x2c PRESC
Toggle registers

CR1

USART control register 1 [alternate]

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

24/24 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
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. The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit. In Smartcard mode, (SCEN = 1), the CK is always available when CLKEN = 1, regardless of the UE bit value..

Allowed values:
0: Disabled: UART is disabled
1: Enabled: UART is enabled

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 exit from low-power mode. If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page 1985..

Allowed values:
0: Disabled: USART not able to wake up the MCU from Stop mode
1: Enabled: USART able to wake up the MCU from Stop mode

RE

Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..

Allowed values:
0: Disabled: Receiver is disabled
1: Enabled: Receiver is enabled

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. In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..

Allowed values:
0: Disabled: Transmitter is disabled
1: Enabled: Transmitter is enabled

IDLEIE

Bit 4: IDLE interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt is disabled
1: Enabled: Interrupt is generated whenever IDLE=1 in the ISR register

RXNEIE

Bit 5: RXFIFO not empty interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt is disabled
1: Enabled: Interrupt is generated whenever ORE=1 or RXNE=1 in the ISR register

TCIE

Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt is disabled
1: Enabled: Interrupt is generated whenever TC=1 in the ISR register

TXEIE

Bit 7: TXFIFO not full interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt is disabled
1: Enabled: Interrupt is generated whenever TXE=1 in the ISR register

PEIE

Bit 8: PE interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt is disabled
1: Enabled: Interrupt is generated whenever PE=1 in the ISR register

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)..

Allowed values:
0: Even: Even parity
1: Odd: Odd parity

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)..

Allowed values:
0: Disabled: Parity control disabled
1: Enabled: Parity control enabled

WAKE

Bit 11: Receiver wakeup method This bit determines the USART wakeup method from Mute mode. It is set or cleared by software. This bitfield can only be written when the USART is disabled (UE = 0)..

Allowed values:
0: Idle: Idle line
1: Address: Address mask

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)..

Allowed values:
0: Bit8: 1 start bit, 8 data bits, n stop bits
1: Bit9: 1 start bit, 9 data bits, n stop bits

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..

Allowed values:
0: Disabled: Receiver in active mode permanently
1: Enabled: Receiver can switch between mute mode and active mode

CMIE

Bit 14: Character match interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt is disabled
1: Enabled: Interrupt is generated when the CMF bit is set in the ISR register

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..

Allowed values:
0: Oversampling16: Oversampling by 16
1: Oversampling8: Oversampling by 8

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 ..

Allowed values: 0x0-0x1f

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 ..

Allowed values: 0x0-0x1f

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. ..

Allowed values:
0: Disabled: Interrupt is inhibited
1: Enabled: An USART interrupt is generated when the RTOF bit is set in the ISR register

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 ..

Allowed values:
0: Disabled: Interrupt is inhibited
1: Enabled: A USART interrupt is generated when the EOBF flag is set in the ISR register

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..

Allowed values:
0: M0: Use M0 to set the data bits
1: Bit7: 1 start bit, 7 data bits, n stop bits

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..

Allowed values:
0: Disabled: FIFO mode is disabled
1: Enabled: FIFO mode is enabled

TXFEIE

Bit 30: TXFIFO empty interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when TXFE = 1 in the USART_ISR register

RXFFIE

Bit 31: RXFIFO Full interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when RXFF = 1 in the USART_ISR register

CR2

USART control register 2

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

20/20 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 ..

Allowed values:
0: Disabled: Slave mode disabled
1: Enabled: Slave mode enabled

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 ..

Allowed values:
0: Disabled: SPI slave selection depends on NSS input pin
1: Enabled: SPI slave is always selected and NSS input pin is ignored

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..

Allowed values:
0: Bit4: 4-bit address detection
1: Bit7: 7-bit address detection

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 ..

Allowed values:
0: Bit10: 10-bit break detection
1: Bit11: 11-bit break detection

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 ..

Allowed values:
0: Disabled: Interrupt is inhibited
1: Enabled: An interrupt is generated whenever LBDF=1 in the ISR register

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 ..

Allowed values:
0: NotOutput: The clock pulse of the last data bit is not output to the CK pin
1: Output: The clock pulse of the last data bit is output to the CK pin

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 and ) 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 ..

Allowed values:
0: First: The first clock transition is the first data capture edge
1: Second: The second clock transition is the first data capture edge

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 ..

Allowed values:
0: Low: Steady low value on CK pin outside transmission window
1: High: Steady high value on CK pin outside transmission window

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 . 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 UE = 1.

Allowed values:
0: Disabled: CK pin disabled
1: Enabled: CK pin enabled

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)..

Allowed values:
0: Stop1: 1 stop bit
1: Stop0p5: 0.5 stop bit
2: Stop2: 2 stop bit
3: Stop1p5: 1.5 stop bit

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 ..

Allowed values:
0: Disabled: LIN mode disabled
1: Enabled: LIN mode enabled

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)..

Allowed values:
0: Standard: TX/RX pins are used as defined in standard pinout
1: Swapped: The TX and RX pins functions are swapped

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)..

Allowed values:
0: Standard: RX pin signal works using the standard logic levels
1: Inverted: RX pin signal values are inverted

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)..

Allowed values:
0: Standard: TX pin signal works using the standard logic levels
1: Inverted: TX pin signal values are inverted

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)..

Allowed values:
0: Positive: Logical data from the data register are send/received in positive/direct logic
1: Negative: Logical data from the data register are send/received in negative/inverse logic

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)..

Allowed values:
0: LSB: data is transmitted/received with data bit 0 first, following the start bit
1: MSB: data is transmitted/received with MSB (bit 7/8/9) first, following the start bit

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 ..

Allowed values:
0: Disabled: Auto baud rate detection is disabled
1: Enabled: Auto baud rate detection is enabled

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) If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..

Allowed values:
0: Start: Measurement of the start bit is used to detect the baud rate
1: Edge: Falling edge to falling edge measurement
2: Frame7F: 0x7F frame detection
3: Frame55: 0x55 frame detection

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 ..

Allowed values:
0: Disabled: Receiver timeout feature disabled
1: Enabled: Receiver timeout feature enabled

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 wakeup 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 wakeup 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 (RE = 0) or when the USART is disabled (UE = 0)..

Allowed values: 0x0-0xff

CR3

USART control register 3

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

24/24 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
WUS
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 = 1 or UDR = 1 in the USART_ISR register)..

Allowed values:
0: Disabled: Interrupt is inhibited
1: Enabled: An interrupt is generated when FE=1 or ORE=1 or NF=1 in the 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 ..

Allowed values:
0: Disabled: IrDA disabled
1: Enabled: IrDA enabled

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 ..

Allowed values:
0: Normal: Normal mode
1: LowPower: Low-power mode

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)..

Allowed values:
0: NotSelected: Half duplex mode is not selected
1: Selected: Half duplex mode is selected

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 ..

Allowed values:
0: Disabled: NACK transmission in case of parity error is disabled
1: Enabled: NACK transmission during parity error is enabled

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 ..

Allowed values:
0: Disabled: Smartcard Mode disabled
1: Enabled: Smartcard Mode enabled

DMAR

Bit 6: DMA enable receiver This bit is set/reset by software.

Allowed values:
0: Disabled: DMA mode is disabled for reception
1: Enabled: DMA mode is enabled for reception

DMAT

Bit 7: DMA enable transmitter This bit is set/reset by software.

Allowed values:
0: Disabled: DMA mode is disabled for transmission
1: Enabled: DMA mode is enabled for transmission

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 ..

Allowed values:
0: Disabled: RTS hardware flow control disabled
1: Enabled: RTS output enabled, data is only requested when there is space in the receive buffer

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 ..

Allowed values:
0: Disabled: CTS hardware flow control disabled
1: Enabled: CTS mode enabled, data is only transmitted when the CTS input is asserted

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 ..

Allowed values:
0: Disabled: Interrupt is inhibited
1: Enabled: An interrupt is generated whenever CTSIF=1 in the ISR register

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)..

Allowed values:
0: Sample3: Three sample bit method
1: Sample1: One sample bit method

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 is 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.

Allowed values:
0: Enabled: Overrun Error Flag, ORE, is set when received data is not read before receiving new data
1: Disabled: Overrun functionality is disabled. If new data is received while the RXNE flag is still set the ORE flag is not set and the new received data overwrites the previous content of the RDR register

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..

Allowed values:
0: NotDisabled: DMA is not disabled in case of reception error
1: Disabled: DMA is disabled following a reception 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. ..

Allowed values:
0: Disabled: DE function is disabled
1: Enabled: The DE signal is output on the RTS pin

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 ..

Allowed values:
0: High: DE signal is active high
1: Low: DE signal is active low

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. Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..

Allowed values: 0x0-0x7

WUS

Bits 20-21: Wakeup from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (Wakeup from low-power mode flag). This bitfield can only be written when the USART is disabled (UE = 0). If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page 1985..

Allowed values:
0: Address: WUF active on address match
2: Start: WuF active on Start bit detection
3: RXNE: WUF active on RXNE

WUFIE

Bit 22: Wakeup 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. If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page 1985..

Allowed values:
0: Disabled: Interrupt is inhibited
1: Enabled: An USART interrupt is generated whenever WUF=1 in the ISR register

TXFTIE

Bit 23: TXFIFO threshold interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when Transmit FIFO reaches the threshold programmed in TXFTCFG

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 ..

Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated whenever TCBGT=1 in the USART_ISR register

RXFTCFG

Bits 25-27: Receive FIFO threshold configuration Remaining combinations: Reserved.

Allowed values:
0: Depth_1_8: RXFIFO reaches 1/8 of its depth
1: Depth_1_4: RXFIFO reaches 1/4 of its depth
2: Depth_1_2: RXFIFO reaches 1/2 of its depth
3: Depth_3_4: RXFIFO reaches 3/4 of its depth
4: Depth_7_8: RXFIFO reaches 7/8 of its depth
5: Full: RXFIFO becomes full

RXFTIE

Bit 28: RXFIFO threshold interrupt enable This bit is set and cleared by software..

Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when Receive FIFO reaches the threshold programmed in RXFTCFG

TXFTCFG

Bits 29-31: TXFIFO threshold configuration Remaining combinations: Reserved.

Allowed values:
0: Depth_1_8: TXFIFO reaches 1/8 of its depth
1: Depth_1_4: TXFIFO reaches 1/4 of its depth
2: Depth_1_2: TXFIFO reaches 1/2 of its depth
3: Depth_3_4: TXFIFO reaches 3/4 of its depth
4: Depth_7_8: TXFIFO reaches 7/8 of its depth
5: Empty: TXFIFO becomes empty

BRR

USART baud rate register

Offset: 0xc, 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
BRR
rw
Toggle fields

BRR

Bits 0-15: USART baud rate BRR[15:4] BRR[15:4] = 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..

Allowed values: 0x0-0xffff

GTPR

USART guard time and prescaler register

Offset: 0x10, 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
GT
rw
PSC
rw
Toggle fields

PSC

Bits 0-7: Prescaler value In IrDA low-power and normal IrDA mode: PSC[7:0] = IrDA Normal and Low-Power baud rate PSC[7:0] is used to program 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): In Smartcard mode: PSC[4:0] = Prescaler value PSC[4:0] is used to program 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. This bitfield is reserved and forced by hardware to 0 when the Smartcard and IrDA modes are not supported. Refer to ..

Allowed values: 0x0-0xff

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 ..

Allowed values: 0x0-0xff

RTOR

USART receiver timeout register

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

2/2 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 bits during which there is no activity on the RX line. 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..

Allowed values: 0x0-0xffffff

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..

Allowed values: 0x0-0xff

RQR

USART request register

Offset: 0x18, 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
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 ..

Allowed values:
1: Request: resets the ABRF flag in the USART_ISR and request an automatic baud rate measurement on the next received data frame

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 should wait for the TXE flag assertion before setting the SBKRQ bit..

Allowed values:
1: Break: sets the SBKF flag and request to send a BREAK on the line, as soon as the transmit machine is available

MMRQ

Bit 2: Mute mode request Writing 1 to this bit puts the USART in Mute mode and resets the RWU flag..

Allowed values:
1: Mute: Puts the USART in mute mode and sets 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..

Allowed values:
1: Discard: clears the RXNE flag. This allows to discard the received data without reading it, 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..

Allowed values:
1: Discard: Set the TXE flags. This allows to discard the transmit data

ISR

USART interrupt and status register [alternate]

Offset: 0x1c, size: 32, reset: 0x008000C0, 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 receiver 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..

Allowed values:
0: NoError: No parity error
1: Error: Parity error

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 EIE = 1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..

Allowed values:
0: NoError: No Framing error is detected
1: Error: Framing error or break character is detected

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 NECF 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. 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 Tolerance of the USART receiver to clock deviation on page 2012). This error is associated with the character in the USART_RDR..

Allowed values:
0: NoNoise: No noise is detected
1: Noise: Noise is detected

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 or EIE = 1 in the USART_CR1 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. This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the USART_CR3 register..

Allowed values:
0: NoOverrun: No Overrun error
1: Overrun: Overrun error is detected

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). 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..

Allowed values:
0: NoIdle: No Idle Line is detected
1: Idle: Idle Line is detected

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..

Allowed values:
0: NoData: Data is not received
1: DataReady: Received data is ready to be read

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. It is set by hardware when the transmission of a frame containing data is complete and when TXFE is set. An interrupt is generated if TCIE = 1 in the USART_CR1 register. TC bit is is cleared by software, by writing 1 to the TCCF in the USART_ICR register or by a write to the USART_TDR register. Note: If TE bit is reset and no transmission is on going, the TC bit is immediately set..

Allowed values:
0: TxNotComplete: Transmission is not complete
1: TxComplete: Transmission is complete

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 should be checked prior to writing in TXFIFO (TXFNF and TXFE are set at the same time). This bit is used during single buffer transmission..

Allowed values:
0: Full: Transmit FIFO is full
1: NotFull: Transmit FIFO is not full

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 ..

Allowed values:
0: NotDetected: LIN break not detected
1: Detected: LIN break detected

CTSIF

Bit 9: CTS interrupt flag This bit is set by hardware when the nCTS 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..

Allowed values:
0: NotChanged: No change occurred on the CTS status line
1: Changed: A change occurred on the CTS status line

CTS

Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the nCTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..

Allowed values:
0: Set: CTS line set
1: Reset: CTS line reset

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. 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. If the USART does not support the Receiver timeout feature, this bit is reserved and kept at reset value..

Allowed values:
0: NotReached: Timeout value not reached
1: Reached: Timeout value reached without any data reception

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 the EOBIE = 1 in the USART_CR1 register. It is cleared by software, writing 1 to the EOBCF in the USART_ICR register. Note: If Smartcard mode is not supported, this bit is reserved and kept at reset value. Refer to ..

Allowed values:
0: NotReached: End of Block not reached
1: Reached: End of Block (number of characters) reached

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 ..

Allowed values:
0: NoUnderrun: No underrun error
1: Underrun: underrun error

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)..

Allowed values:
0: Idle: USART is idle (no reception)
1: Busy: Reception on going

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..

Allowed values:
0: NoMatch: No Character match detected
1: Match: Character match detected

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..

Allowed values:
0: NoBreak: No break character transmitted
1: Break: Break character transmitted

RWU

Bit 19: Receiver wakeup from Mute mode This bit indicates if the USART is in Mute mode. It is cleared/set by hardware when a wakeup/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the USART_CR1 register. When wakeup 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 wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..

Allowed values:
0: Active: Receiver in Active mode
1: Mute: Receiver in Mute mode

WUF

Bit 20: Wakeup from low-power mode flag This bit is set by hardware, when a wakeup 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. If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..

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 wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..

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..

Allowed values:
0: NotEmpty: TXFIFO not empty.
1: Empty: TXFIFO empty.

RXFF

Bit 24: RXFIFO full This bit is set by hardware when the number of received data corresponds to RXFIFO size + 1 (RXFIFO full + 1 data in the USART_RDR register. An interrupt is generated if the RXFFIE bit = 1 in the USART_CR1 register..

Allowed values:
0: NotFull: RXFIFO not full.
1: Full: RXFIFO Full.

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 on page 1985..

Allowed values:
0: NotCompleted: Transmission is not complete or transmission is complete unsuccessfully (i.e. a NACK is received from the card)
1: Completed: Transmission is complete successfully (before Guard time completion and there is no NACK from the smart card)

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..

Allowed values:
0: NotReached: Receive FIFO does not reach the programmed threshold.
1: Reached: Receive FIFO reached the programmed threshold.

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..

Allowed values:
0: NotReached: TXFIFO does not reach the programmed threshold.
1: Reached: TXFIFO reached the programmed threshold.

ICR

USART interrupt flag clear register

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

15/15 fields covered.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
WUCF
w1c
CMCF
w1c
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UDRCF
w1c
EOBCF
w1c
RTOCF
w1c
CTSCF
w1c
LBDCF
w1c
TCBGTCF
w1c
TCCF
w1c
TXFECF
w1c
IDLECF
w1c
ORECF
w1c
NECF
w1c
FECF
w1c
PECF
w1c
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PECF

Bit 0: Parity error clear flag Writing 1 to this bit clears the PE flag in the USART_ISR register..

Allowed values:
1: Clear: Clears the PE flag in the ISR register

FECF

Bit 1: Framing error clear flag Writing 1 to this bit clears the FE flag in the USART_ISR register..

Allowed values:
1: Clear: Clears the FE flag in the ISR register

NECF

Bit 2: Noise detected clear flag Writing 1 to this bit clears the NE flag in the USART_ISR register..

Allowed values:
1: Clear: Clears the NF flag in the ISR register

ORECF

Bit 3: Overrun error clear flag Writing 1 to this bit clears the ORE flag in the USART_ISR register..

Allowed values:
1: Clear: Clears the ORE flag in the ISR register

IDLECF

Bit 4: Idle line detected clear flag Writing 1 to this bit clears the IDLE flag in the USART_ISR register..

Allowed values:
1: Clear: Clears the IDLE flag in the ISR register

TXFECF

Bit 5: TXFIFO empty clear flag Writing 1 to this bit clears the TXFE flag in the USART_ISR register..

Allowed values:
1: Clear: Clear the TXFE flag in the ISR register

TCCF

Bit 6: Transmission complete clear flag Writing 1 to this bit clears the TC flag in the USART_ISR register..

Allowed values:
1: Clear: Clears the TC flag in the 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..

Allowed values:
1: Clear: Clear the TCBGT flag in the 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 ..

Allowed values:
1: Clear: Clears the LBDF flag in the ISR register

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 ..

Allowed values:
1: Clear: Clears the CTSIF flag in the ISR register

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 page 1985..

Allowed values:
1: Clear: Clears the RTOF flag in the ISR register

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 ..

Allowed values:
1: Clear: Clears the EOBF flag in the ISR register

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.

Allowed values:
1: Clear: Clear the UDR flag in the ISR register

CMCF

Bit 17: Character match clear flag Writing 1 to this bit clears the CMF flag in the USART_ISR register..

Allowed values:
1: Clear: Clears the CMF flag in the ISR register

WUCF

Bit 20: Wakeup 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 wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page 1985..

Allowed values:
1: Clear: Clears the WUF flag in the ISR register

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 ). When receiving with the parity enabled, the value read in the MSB bit is the received parity bit..

Allowed values: 0x0-0x1ff

TDR

USART transmit data register

Offset: 0x28, 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
TDR
rw
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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 ). 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..

Allowed values: 0x0-0x1ff

PRESC

USART prescaler 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
PRESCALER
rw
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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 1011 i.e. input clock divided by 256..

Allowed values:
0: Div1: Input clock divided by 1
1: Div2: Input clock divided by 2
2: Div4: Input clock divided by 4
3: Div6: Input clock divided by 6
4: Div8: Input clock divided by 8
5: Div10: Input clock divided by 10
6: Div12: Input clock divided by 12
7: Div16: Input clock divided by 16
8: Div32: Input clock divided by 32
9: Div64: Input clock divided by 64
10: Div128: Input clock divided by 128
11: Div256: Input clock divided by 256

WWDG

0x40002c00: WWDG register block

6/6 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 (16-bit) CR
0x4 (16-bit) CFR
0x8 (16-bit) SR
Toggle registers

CR

WWDG control register

Offset: 0x0, size: 16, reset: 0x0000007F, access: Unspecified

2/2 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
WDGA
rw
T
rw
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T

Bits 0-6: 7-bit counter (MSB to LSB) These bits contain the value of the watchdog counter, decremented every (4096 x 2WDGTB[1:0]) PCLK cycles. A reset is produced when it is decremented from 0x40 to 0x3F (T6 becomes cleared)..

Allowed values: 0x0-0x7f

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..

Allowed values:
0: Disabled: Watchdog disabled
1: Enabled: Watchdog enabled

CFR

WWDG configuration register

Offset: 0x4, size: 16, reset: 0x0000007F, access: Unspecified

3/3 fields covered.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
WDGTB
N/A
EWI
rw
W
rw
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W

Bits 0-6: 7-bit window value These bits contain the window value to be compared with the down-counter..

Allowed values: 0x0-0x7f

EWI

Bit 9: Early wakeup interrupt When set, an interrupt occurs whenever the counter reaches the value 0x40. This interrupt is only cleared by hardware after a reset..

Allowed values:
1: Enable: 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:.

Allowed values:
0: Div1: Counter clock (PCLK1 div 4096) div 1
1: Div2: Counter clock (PCLK1 div 4096) div 2
2: Div4: Counter clock (PCLK1 div 4096) div 4
3: Div8: Counter clock (PCLK1 div 4096) div 8
4: Div16: Counter clock (PCLK1 div 4096) div 16
5: Div32: Counter clock (PCLK1 div 4096) div 32
6: Div64: Counter clock (PCLK1 div 4096) div 64
7: Div128: Counter clock (PCLK1 div 4096) div 128

SR

WWDG status register

Offset: 0x8, 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
EWIF
r/w0c
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EWIF

Bit 0: Early wakeup 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..

Allowed values:
0: Finished: The EWI Interrupt Service Routine has been serviced
1: Pending: The EWI Interrupt Service Routine has been triggered