power control/status register
| WUF | Wakeup flag |
| SBF | Standby flag |
| PVDO | PVD output |
| VREFINTRDYF | Internal voltage reference (VREFINT) ready flag This bit indicates the state of the internal voltage reference, VREFINT. |
| VOSF | Voltage Scaling select flag |
| REGLPF | Regulator LP flag |
| EWUP1 | Enable WKUP pin 1 |
| EWUP2 | Enable WKUP pin 2 |
| EWUP3 | Enable WKUP pin 3 |