13.7.8.1 Reset Cause

When a Reset occurs, the bit corresponding to the Reset source is set to '1' and all other bits are written to '0'.
Name: RCAUSE
Offset: 0x00
Reset: Latest Reset Source
Property: 

Bit 76543210 
 BACKUPSYSTWDTEXT BOD33BOD12POR 
Access RRRRRRR 
Reset xxxxxxx 

Bit 7 – BACKUP Backup Reset

This bit is set if a Backup Reset has occurred. Refer to BKUPEXIT register to identify the source of the Backup Reset.

Bit 6 – SYST System Reset Request

This bit is set if a System Reset Request has occurred. Refer to the Cortex processor documentation for more details.

Bit 5 – WDT Watchdog Reset

This bit is set if a Watchdog Timer Reset has occurred.

Bit 4 – EXT External Reset

This bit is set if an external Reset has occurred.

Bit 2 – BOD33  Brown Out 33 Detector Reset

This bit is set if a BOD33 Reset has occurred.

Bit 1 – BOD12  Brown Out 12 Detector Reset

This bit is set if a BOD12 Reset has occurred.

Bit 0 – POR Power On Reset

This bit is set if a POR has occurred.