| Field | Offset | Width | STM32L0x3 | STM32L162 | STM32L4x6 |
|---|---|---|---|---|---|
| LSION | 0 | 1 | ✔ | ✘ | ✘ |
| LSIRDY | 1 | 1 | ✔ | ✘ | ✘ |
| LSEON | 8 | 1 | ✔ | ✘ | ✘ |
| LSERDY | 9 | 1 | ✔ | ✘ | ✘ |
| LSEBYP | 10 | 1 | ✔ | ✘ | ✘ |
| LSEDRV | 11 | 2 | ✔ | ✘ | ✘ |
| CSSLSEON | 13 | 1 | ✔ | ✘ | ✘ |
| CSSLSED | 14 | 1 | ✔ | ✘ | ✘ |
| RTCSEL | 16 | 2 | ✔ | ✘ | ✘ |
| RTCEN | 18 | 1 | ✔ | ✘ | ✘ |
| RTCRST | 19 | 1 | ✔ | ✘ | ✘ |
| RMVF | 23 | 1 | ✔ | ✘ | ✘ |
| FWRSTF | 24 | 1 | ✔ | ✘ | ✘ |
| OBLRSTF | 25 | 1 | ✔ | ✘ | ✘ |
| PINRSTF | 26 | 1 | ✔ | ✘ | ✘ |
| PORRSTF | 27 | 1 | ✔ | ✘ | ✘ |
| SFTRSTF | 28 | 1 | ✔ | ✘ | ✘ |
| IWDGRSTF | 29 | 1 | ✔ | ✘ | ✘ |
| WWDGRSTF | 30 | 1 | ✔ | ✘ | ✘ |
| LPWRRSTF | 31 | 1 | ✔ | ✘ | ✘ |