| Field | Offset | Width | STM32L0x3 | STM32L162 | STM32L4x6 |
|---|---|---|---|---|---|
| PELOCK | 0 | 1 | ✘ | ✔ | ✘ |
| PRGLOCK | 1 | 1 | ✘ | ✔ | ✘ |
| OPTLOCK | 2 | 1 | ✘ | ✔ | ✘ |
| PROG | 3 | 1 | ✘ | ✔ | ✘ |
| DATA | 4 | 1 | ✘ | ✔ | ✘ |
| FTDW | 8 | 1 | ✘ | ✔ | ✘ |
| ERASE | 9 | 1 | ✘ | ✔ | ✘ |
| FPRG | 10 | 1 | ✘ | ✔ | ✘ |
| PARALLELBANK | 15 | 1 | ✘ | ✔ | ✘ |
| EOPIE | 16 | 1 | ✘ | ✔ | ✘ |
| ERRIE | 17 | 1 | ✘ | ✔ | ✘ |
| OBL_LAUNCH | 18 | 1 | ✘ | ✔ | ✘ |