Power control PWR 0x0 0x400 registers CR CR power control register 0x0 0x20 read-write 0x00000000 FPDS Flash power down in Stop mode 9 1 DBP Disable backup domain write protection 8 1 PLS PVD level selection 5 3 PVDE Power voltage detector enable 4 1 CSBF Clear standby flag 3 1 CWUF Clear wakeup flag 2 1 PDDS Power down deepsleep 1 1 LPDS Low-power deep sleep 0 1 #if defined(STM32F427) || defined(STM32F437) || defined(STM32F429) || defined(STM32F439) LPUDS Low-Power Regulator Low Voltage in deepsleep 10 1 MRUDS Main regulator low voltage in deepsleep mode 11 1 VOS Regulator voltage scaling output selection 14 2 ODEN Over-drive enable 16 1 ODSWEN Over-drive switching enabled 17 1 UDEN Under-drive enable in stop mode 18 2 #endif CSR CSR power control/status register 0x4 0x20 0x00000000 WUF Wakeup flag 0 1 read-only SBF Standby flag 1 1 read-only PVDO PVD output 2 1 read-only BRR Backup regulator ready 3 1 read-only EWUP Enable WKUP pin 8 1 read-write BRE Backup regulator enable 9 1 read-write VOSRDY Regulator voltage scaling output selection ready bit 14 1 read-write #if defined(STM32F427) || defined(STM32F437) || defined(STM32F429) || defined(STM32F439) ODRDY Over-drive mode ready 16 1 read-only ODSWRDY Over-drive mode switching ready 17 1 read-only UDRDY Under-drive ready flag 18 2 read-write #endif