27.2.4 Auto-Conversion Trigger
The auto-conversion trigger allows periodic ADC measurements without software intervention. When a rising edge of the selected source occurs, the GO bit is set by hardware.
The auto-conversion trigger source is selected with the Auto-Conversion Trigger Select (ACT) bits.
Important: Using the auto-conversion trigger does not ensure proper ADC
timing. It is the user’s responsibility to ensure that the ADC timing requirements
are met.