I'm a bit confused by the datasheet.
The datasheet says:
"0-Vavdd ADC Input Voltage Range"
"Selectable 1.5V, 1.6V or VAVDD ADC Reference Voltage"
And then throughout the datasheet it refers to AVDD as 1.8V.
If I connect AVDD to ground with a capacitor, and connect AREF to 3.3V, will that give me 3.3V ADC without breaking anything? Or do I also need to set the AVDD bit to allow an external voltage, then plug it into 3.3V as well?