| Field | Offset | Width | STM32L0x3 | STM32L162 | STM32L4x6 |
|---|---|---|---|---|---|
| PG | 0 | 1 | ✘ | ✘ | ✔ |
| PER | 1 | 1 | ✘ | ✘ | ✔ |
| MER1 | 2 | 1 | ✘ | ✘ | ✔ |
| PNB | 3 | 8 | ✘ | ✘ | ✔ |
| BKER | 11 | 1 | ✘ | ✘ | ✔ |
| MER2 | 15 | 1 | ✘ | ✘ | ✔ |
| START | 16 | 1 | ✘ | ✘ | ✔ |
| OPTSTRT | 17 | 1 | ✘ | ✘ | ✔ |
| FSTPG | 18 | 1 | ✘ | ✘ | ✔ |
| EOPIE | 24 | 1 | ✘ | ✘ | ✔ |
| ERRIE | 25 | 1 | ✘ | ✘ | ✔ |
| RDERRIE | 26 | 1 | ✘ | ✘ | ✔ |
| OBL_LAUNCH | 27 | 1 | ✘ | ✘ | ✔ |
| OPTLOCK | 30 | 1 | ✘ | ✘ | ✔ |
| LOCK | 31 | 1 | ✘ | ✘ | ✔ |