18.4.7 Comparator

Each ADC channel has a dedicated digital comparator that compares the channel conversion result (ADnCHxDATA) with thresholds stored in the ADnCHxCMPLO and ADnCHxCMPHI registers. The following comparison criteria is selected by the CMPMOD[2:0] bits (ADnCHxCON[18:16]):

• Out of bounds (CMPMOD[2:0] bits = ‘001’) when ADnCHxCMPLO<ADnCHxDATA or ADnCHxDATA>ADnCHxCMPHI.
• In bounds (CMPMOD[2:0] bits = ‘010’) when ADnCHxCMPLO≤ADnCHxDATA≤ADnCHxCMPHI.
• Greater than (CMPMOD[2:0] bits = ‘011’) when ADnCHxDATA>ADnCHxCMPLO.
• Less or equal (CMPMOD[2:0] bits = ‘100’) when ADnCHxDATA≤ADnCHxCMPLO.

For all other CMPMOD[2:0] bit options, the digital comparator is disabled.

When the comparison match event is detected, the corresponding channel CMPxFLG bit in the ADnCMPSTAT register and the ADnCMPxIF interrupt flag are set.