7.2.2 Power-On Reset and Brown-Out Detectors

The PIC32CZ CA embed three features to monitor, warn and reset the device:
  • A Power-on Reset (POR) on VDD (AVDD and VDDIO):
    • Monitoring is always activated, including during device startup or during any sleep modes
    • Having VDD below a fixed threshold voltage will reset the whole device
    Note: Refer to the Electrical Characteristics for the rising and falling threshold voltages.
  • A Brown-out Detector (VDDBOD) on VDD (AVDD and VDDIO):
    • The VDDBOD monitors VDD continuously
    • dcBOR in (continuous mode) or periodically (sampled mode) with a programmable sample frequency in backup mode
    • A programmable threshold loaded from the NVM User Row is used to trigger an interrupt and/or reset the whole device
  • PORCORE a Brown-out Detector on VDDCORE
    Note: PORCORE is calibrated in production and its calibration parameters are stored in the NVM User Row. These data must not be changed to ensure correct device behavior.