| Field | Offset | Width | STM32L100 | STM32L151 | STM32L152 | STM32L162 |
|---|---|---|---|---|---|---|
| SBK | 0 | 1 | ✔ | ✘ | ✘ | ✘ |
| RWU | 1 | 1 | ✔ | ✘ | ✘ | ✘ |
| RE | 2 | 1 | ✔ | ✘ | ✘ | ✘ |
| TE | 3 | 1 | ✔ | ✘ | ✘ | ✘ |
| IDLEIE | 4 | 1 | ✔ | ✘ | ✘ | ✘ |
| RXNEIE | 5 | 1 | ✔ | ✘ | ✘ | ✘ |
| TCIE | 6 | 1 | ✔ | ✘ | ✘ | ✘ |
| TXEIE | 7 | 1 | ✔ | ✘ | ✘ | ✘ |
| PEIE | 8 | 1 | ✔ | ✘ | ✘ | ✘ |
| PS | 9 | 1 | ✔ | ✘ | ✘ | ✘ |
| PCE | 10 | 1 | ✔ | ✘ | ✘ | ✘ |
| WAKE | 11 | 1 | ✔ | ✘ | ✘ | ✘ |
| M | 12 | 1 | ✔ | ✘ | ✘ | ✘ |
| UE | 13 | 1 | ✔ | ✘ | ✘ | ✘ |
| OVER8 | 15 | 1 | ✔ | ✘ | ✘ | ✘ |