With regards to Single conversion mode ADCCON[2:0]=011 ,what are that points to be taken care as there are 3 anomaly related this mode .
With regards to external reference we find that including a waiting in between Channel setting -> Conversion we find the output of the ADC stable
Change channel -> Conversion Single -> Read -> Wait -> Change channel -> Conversion Single -> Read .
If we remove the wait we see the ADC output is not stable , Please let me know with regards 1.
With best regards and wishes