Reset Cause Register
| PONR | Power-on reset/low-voltage detection reset flag |
| INITX | INITX pin input reset flag |
| LVDH | Low-voltage detection reset flag |
| SWDT | Software watchdog reset flag |
| HWDT | Hardware watchdog reset flag |
| CSVR | Clock failure detection reset flag |
| FCSR | Flag for anomalous frequency detection reset |
| SRST | Software reset flag |