An ADC conversion can be triggered automatically by an event input if the Start Event Input (STARTEI) bit in the Event Control (ADCn.EVCTRL) register is written to ‘1’.

When a new result can be read from the Result (ADCn.RES) register, the ADC will generate a result ready event. The event is a pulse with a length of one clock period and handled by the Event System (EVSYS). The ADC result ready event is always generated when the ADC is enabled.

See also the description of the Asynchronous User Channel n Input Selection in the Event System (EVSYS.ASYNCUSERn).