32.2.1 Starting a Conversion
To enable the ADC module, the ADON must be set to a ‘1’. A conversion may be started by any of the following:
- Software setting the ADGO bit to ‘1’
 - An external trigger (source selected by ADACT)
 - A continuous-mode retrigger (see section Continuous Sampling Mode)
 
Important: The ADGO bit must not be set in the same
         instruction that turns on the ADC. Refer to ADC Conversion Procedure (Basic Mode).
   