In Accumulate mode (
MD =
'b001),
after every conversion, the ADC result is added to the
ADACC register. The ADACC register is right-shifted by the value of the
CRS bits. This right-shifted value is copied in to the
ADFLTR register. The Formatting mode does not affect the right-justification
of the ADACC or ADFLTR values. Upon each sample, ADCNT is incremented, counting the
number of samples accumulated. After each sample and accumulation, the ADFLTR value has
a threshold comparison performed on it (see
Threshold Comparison section) and the ADTIF interrupt may trigger.