Power control register 3
| EWUP1 | Enable Wakeup pin WKUP1  |  
| EWUP2 | Enable Wakeup pin WKUP2  |  
| EWUP3 | Enable Wakeup pin WKUP3  |  
| EWUP4 | Enable Wakeup pin WKUP4  |  
| EWUP5 | Enable Wakeup pin WKUP5  |  
| RRS | SRAM2 retention in Standby mode  |  
| APC | Apply pull-up and pull-down configuration  |  
| EWF | Enable internal wakeup line  |