BREN=B_0x0, VBRS=B_0x0, MONEN=B_0x0, VBE=B_0x0
PWR Backup domain control register
| BREN | Backup RAM retention in Standby and V BAT modes When this bit set, the backup regulator (used to maintain the backup RAM content in Standby and V BAT modes) is enabled. If BREN is cleared, the backup regulator is switched off. The backup RAM can still be used in Run and Stop modes. However its content is lost in Standby and V BAT modes. If BREN is set, the application must wait till the backup regulator ready flag (BRRDY) is set to indicate that the data written into the SRAM is maintained in Standby and V BAT modes. 0 (B_0x0): Backup RAM content lost in Standby and V BAT modes. 1 (B_0x1): Backup RAM content preserved in Standby and V BAT modes |
| MONEN | Backup domain voltage and temperature monitoring enable 0 (B_0x0): Backup domain voltage and temperature monitoring disabled 1 (B_0x1): Backup domain voltage and temperature monitoring enabled |
| VBE | V BAT charging enable Note: Reset only by POR,. 0 (B_0x0): V BAT battery charging disabled. 1 (B_0x1): V BAT battery charging enabled. |
| VBRS | V BAT charging resistor selection 0 (B_0x0): Charge V BAT through a 5 kohm resistor. 1 (B_0x1): Charge V BAT through a 1.5 kohm resistor. |