VBRS=B_0x0, BREN=B_0x0, MONEN=B_0x0, VBE=B_0x0
PWR Backup domain control register
| BREN | Backup RAM retention in Standby and V sub BAT /sub modes When this bit set, the backup regulator (used to maintain the backup RAM content in Standby and V sub BAT /sub 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 sub BAT /sub 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 sub BAT /sub modes. 0 (B_0x0): Backup RAM content lost in Standby and V sub BAT /sub modes. 1 (B_0x1): Backup RAM content preserved in Standby and V sub BAT /sub 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 sub BAT /sub charging enable Note: Reset only by POR,. 0 (B_0x0): V sub BAT /sub battery charging disabled. 1 (B_0x1): V sub BAT /sub battery charging enabled. |
| VBRS | V sub BAT /sub charging resistor selection 0 (B_0x0): Charge V sub BAT /sub through a 5 kohm resistor. 1 (B_0x1): Charge V sub BAT /sub through a 1.5 kohm resistor. |