power control/status register
| WUF | Wakeup flag  |  
| SBF | Standby flag  |  
| PVDO | PVD output  |  
| BRR | Backup regulator ready  |  
| EWUP | Enable WKUP pin  |  
| BRE | Backup regulator enable  |  
| VOSRDY | Regulator voltage scaling output selection ready bit  |  
| ODRDY | Over-drive mode ready  |  
| ODSWRDY | Over-drive mode switching ready  |  
| UDRDY | Under-drive ready flag  |