31.3.3.4 Conversion Timing

A normal conversion takes place in the following order:
  1. Write a ‘1’ to the STCONV bit in the Command (ADCn.COMMAND) register.
  2. Start-up for maximum two CLK_PER cycles.
  3. Sample-and-hold for two CLK_ADC cycles.
  4. Conversion for 13.5 CLK_ADC cycles.
  5. Result formatting for two CLK_PER cycles.

When a conversion is complete, the result is available in the Result (ADCn.RES) register, and the Result Ready (RESRDY) interrupt flag is set in the Interrupt Flags (ADCn.INTFLAGS) register.