reset only by system reset, not reset by wakeup from Standby mode5 wait states are required when writing this register (when clearing a WKUPF bit in PWR_WKUPFR, the AHB write access will complete after the WKUPF has been cleared).
| WKUPC1 | Clear Wakeup pin flag for WKUP. These bits are always read as 0. |
| WKUPC2 | Clear Wakeup pin flag for WKUP. These bits are always read as 0. |
| WKUPC3 | Clear Wakeup pin flag for WKUP. These bits are always read as 0. |
| WKUPC4 | Clear Wakeup pin flag for WKUP. These bits are always read as 0. |
| WKUPC5 | Clear Wakeup pin flag for WKUP. These bits are always read as 0. |
| WKUPC6 | Clear Wakeup pin flag for WKUP. These bits are always read as 0. |