Power control register 2
| PVDE | Power voltage detector enable |
| PLS | Power voltage detector level selection |
| PVME1 | Peripheral voltage monitoring 1 enable: VDDUSB vs. 1.2V |
| PVME3 | Peripheral voltage monitoring 3 enable: VDDA vs. 1.62V |
| USV | VDDUSB USB supply valid |