27.7.10 Battery Backup Power Switch. This register is implemented only if SUPC_VBAT_IMPLEMENTED==1
| Symbol | Description | Symbol | Description | Symbol | Description |
|---|---|---|---|---|---|
| R | Readable bit | HC | Cleared by Hardware | (Grey cell) | Unimplemented |
| W | Writable bit | HS | Set by Hardware | X | Bit is unknown at Reset |
| K | Write to clear | S | Software settable bit | — | — |
| Name: | BBPS |
| Offset: | 0x024 |
| Reset: | 0x00000000 |
| Property: | RW |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| Access | |||||||||
| Reset |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| Access | |||||||||
| Reset |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| Access | |||||||||
| Reset |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| SELVBATMON | ENVBATMON | WAKEEN | WKONVBATEN | CONF | |||||
| Access | RW | R/W | RW | RW | RW | ||||
| Reset | 0 | 0 | 0 | 0 | 0 |
Bit 5 – SELVBATMON Select VBATMON supply voltage. 0 for VDDA, and 1 for VDDBAT.
| Value | Description |
|---|---|
| 0x0 | VDDA supply is used for VBAT monitoring |
| 0x1 | VDDBAT is used for VBAT monitoring |
Bit 4 – ENVBATMON Enables battery monitor
| Value | Description |
|---|---|
| 0x0 | Battery Monitor is disabled |
| 0x1 | Battery Monitor is enabled |
Bit 2 – WAKEEN Wake Enable
| Value | Name | Description |
|---|---|---|
| 0x0 | DIS | When exiting battery backup mode, the device goes to backup mode. |
| 0x1 | EN | When exiting battery backup mode, the device is waken-up. |
Bit 1 – WKONVBATEN Wake on VBAT Enable, from Backup mode
| Value | Description |
|---|---|
| 0x0 | Remain in backup mode when VBAT is enabled |
| 0x1 | Wake from backup mode when VBAT is enabled |
Bit 0 – CONF Battery Backup Power Switch Configuration
| Value | Name | Description |
|---|---|---|
| 0x0 | BOR | The power switch is automatically handled by the BOR |
| 0x1 | VBAT | In Backup mode, the power-switch is forced to VBAT. |