43.6.2.6 ADC Resolution
The output resolution is selected by CORCTRL.SELRES, to choose between 6 bits, 8 bits, 10 bits, or 12 bits (default). Changing the resolution of the ADC module will also change the ADC throughput rate.
Note: Required analog signal sample
time in ADC clock cycles (TAD) as defined in CORCTRL.SAMC depend on source
impedance of external signal source. Consult electrical specifications for
required sample time based on external source impedance.