power control/status register
| WUIF | Wakeup internal flag |
| SBF | Standby flag |
| PVDO | PVD output |
| BRR | Backup regulator ready |
| 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 |