power control register
| LPDS | Low-power deep sleep |
| PDDS | Power down deepsleep |
| CWUF | Clear wakeup flag |
| CSBF | Clear standby flag |
| PVDE | Power voltage detector enable |
| PLS | PVD level selection |
| DBP | Disable backup domain write protection |
| ENSD1 | ENable SD1 ADC |
| ENSD2 | ENable SD2 ADC |
| ENSD3 | ENable SD3 ADC |