| Field | Offset | Width | STM32F401 | STM32F405 | STM32F407 | STM32F410 | STM32F411 | STM32F412 | STM32F413 | STM32F427 | STM32F429 | STM32F446 | STM32F469 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| FRL | 0 | 8 | ✘ | ✘ | ✘ | ✘ | ✘ | ✘ | ✔ | ✘ | ✔ | ✘ | ✔ |
| FSALL | 8 | 7 | ✘ | ✘ | ✘ | ✘ | ✘ | ✘ | ✔ | ✘ | ✔ | ✘ | ✔ |
| FSDEF | 16 | 1 | ✘ | ✘ | ✘ | ✘ | ✘ | ✘ | ✔ | ✘ | ✔ | ✘ | ✔ |
| FSPOL | 17 | 1 | ✘ | ✘ | ✘ | ✘ | ✘ | ✘ | ✔ | ✘ | ✔ | ✘ | ✔ |
| FSOFF | 18 | 1 | ✘ | ✘ | ✘ | ✘ | ✘ | ✘ | ✔ | ✘ | ✔ | ✘ | ✔ |