| Register | Offset | STM32F301 | STM32F302 | STM32F303 | STM32F373 | STM32F3x4 |
|---|---|---|---|---|---|---|
| MODER | 0x0000 | ✘ | ✔ | ✔ | ✘ | ✘ |
| OTYPER | 0x0004 | ✘ | ✔ | ✔ | ✘ | ✘ |
| OSPEEDR | 0x0008 | ✘ | ✔ | ✔ | ✘ | ✘ |
| PUPDR | 0x000C | ✘ | ✔ | ✔ | ✘ | ✘ |
| IDR | 0x0010 | ✘ | ✔ | ✔ | ✘ | ✘ |
| ODR | 0x0014 | ✘ | ✔ | ✔ | ✘ | ✘ |
| BSRR | 0x0018 | ✘ | ✔ | ✔ | ✘ | ✘ |
| LCKR | 0x001C | ✘ | ✔ | ✔ | ✘ | ✘ |
| AFRL | 0x0020 | ✘ | ✔ | ✔ | ✘ | ✘ |
| AFRH | 0x0024 | ✘ | ✔ | ✔ | ✘ | ✘ |
| BRR | 0x0028 | ✘ | ✔ | ✔ | ✘ | ✘ |