40.5.2.5 Voltage Reference Selection
The ADC’s voltage reference is selected by CTRLD.VREFSEL[2:0]:
| VREFSEL[2:0] | ADREF+ | ADREF- |
|---|---|---|
000 | AVDD | AVSS |
001 | External VREFH | AVSS |
010 - 111 | Reserved | Reserved |
Refer to “Electrical Characteristics” to find allowed values.
