When the BOD33 Mode bit (BOD33.MODE) in the BOD33 register is written to zero and the BOD33 is enabled, the BOD33 operates in continuous mode. In this mode, the BOD33 is continuously monitoring the VDDANA supply voltage.
When the BOD12 Mode bit (BOD12.MODE) in the BOD12 register is written to zero and the BOD12 is enabled(BOD12.ENABLE is written to one), the BOD12 operates in continuous mode. In this mode, the BOD12 is continuously monitoring the VDDCORE supply voltage. Continues mode is not available for BOD12 when running in standby sleep mode.
Continuous mode is the default mode for both BOD12 and BOD33.