| Field | Offset | Width | STM32L0x3 | STM32L162 | STM32L4x6 |
|---|---|---|---|---|---|
| HSION | 0 | 1 | ✘ | ✔ | ✘ |
| HSIRDY | 1 | 1 | ✘ | ✔ | ✘ |
| MSION | 8 | 1 | ✘ | ✔ | ✘ |
| MSIRDY | 9 | 1 | ✘ | ✔ | ✘ |
| HSEON | 16 | 1 | ✘ | ✔ | ✘ |
| HSERDY | 17 | 1 | ✘ | ✔ | ✘ |
| HSEBYP | 18 | 1 | ✘ | ✔ | ✘ |
| PLLON | 24 | 1 | ✘ | ✔ | ✘ |
| PLLRDY | 25 | 1 | ✘ | ✔ | ✘ |
| CSSON | 28 | 1 | ✘ | ✔ | ✘ |
| RTCPRE0 | 29 | 1 | ✘ | ✔ | ✘ |
| RTCPRE1 | 30 | 1 | ✘ | ✔ | ✘ |