7.6.3 BOR and POR

The Brown-out Reset (BOR) monitors the VDD supply voltage. On detection of a brown-out condition, the BOR re-arms the POR. In this device, the min BOR trip point is the voltage below which the IO is deemed to be un-trusted; thus, it generates a reset. There are three BOR in PIC32CX-BZ2 and WBZ45:

  • BOR3.3 to monitor VDD
  • BOR1.2 to monitor VDDCORE
  • ZPBOR monitors VDD during the deep sleep and extreme deep sleep mode if enabled