19.6.5.3.3 BOD33 Hysteresis

A hysteresis on the trigger threshold of a BOD will reduce the sensitivity to ripples on the monitored voltage: instead of switching RESET at each crossing of VBOD, the thresholds for switching RESET on and off are separated (VBOD- and VBOD+, respectively).

Figure 19-2. BOD Hysteresis Principle

Hysteresis OFF:

Hysteresis ON:

Enabling the BOD33 hysteresis by writing the Hysteresis bit field in the BOD33 register (BOD33.HYST) to a non-null value will add hysteresis to the BOD33 threshold level.

The hysteresis functionality can be used in Sampling Mode.