3.4 Power-On Reset (POR) and Brown-Out Detectors (BOD)

The following features are used to monitor, warn, and reset the device:

• POR: Power-On Reset on V_DD and V_DDIO2, handled by the Reset Controller (RSTC) peripheral. The POR is always activated and monitors the voltages at startup and during all sleep modes:
  • If V_DD goes below the threshold voltage, the entire device is reset
  • If V_DDIO2 goes below the threshold voltage, all I/Os supplied by V_DDIO2 are reset
• BODVDD: Brown-Out Detector on V_DD, controlled by the Supply Controller (SUPC) peripheral
• BODVDDIO2: Brown-Out Detector on V_DDIO2, controlled by the SUPC peripheral