| Field | Offset | Width | STM32F401 | STM32F405 | STM32F407 | STM32F410 | STM32F411 | STM32F412 | STM32F413 | STM32F415 | STM32F417 | STM32F427 | STM32F429 | STM32F437 | STM32F439 | STM32F446 | STM32F469 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CKMODE | 0 | 1 | ✘ | ✘ | ✘ | ✘ | ✘ | ✔ | ✔ | ✘ | ✘ | ✘ | ✘ | ✘ | ✘ | ✔ | ✔ |
| CSHT | 8 | 3 | ✘ | ✘ | ✘ | ✘ | ✘ | ✔ | ✔ | ✘ | ✘ | ✘ | ✘ | ✘ | ✘ | ✔ | ✔ |
| FSIZE | 16 | 5 | ✘ | ✘ | ✘ | ✘ | ✘ | ✔ | ✔ | ✘ | ✘ | ✘ | ✘ | ✘ | ✘ | ✔ | ✔ |