41.3.3.1 Operation Modes

The ADC supports four operation modes, configured in the Command (ADCn.COMMAND) register.

The operation modes can be split into three groups:
  • Single mode - Single conversion per trigger, with 8- or 10-bit conversion output
  • Series Accumulation mode - One conversion per trigger, with an accumulation of n samples
  • Burst Accumulation mode - A burst with n samples accumulated as fast as possible after a single trigger

Series and Burst modes utilize 10-bit conversions. The SAMPNUM bit field in the Control F (ADCn.CTRLF) register controls the number of samples to accumulate. The accumulator is always reset to zero when a new Series or Burst accumulation is started.

The table below shows an overview of the available operation modes.

Table 41-1. Operation Modes
Operation ModeCOMMAND Mode Conversions Per TriggerRESULT Update
Single 8-bit01Every conversion
Single 10-bit1
Series Accumulation21After SAMPNUM conversions
Burst Accumulation 3SAMPNUMAfter SAMPNUM conversions

In addition to the ordinary operating modes, an Accumulator Test mode is available. See section Accumulator Test for more information.