31.3.3.1 Operation Modes
The ADC supports four operation modes, which are 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 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 be accumulated. 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.
| Operation Mode | COMMAND Mode | Conversions Per Trigger | RESULT Update |
|---|---|---|---|
| Single 8-bit | 0 | 1 | Every conversion |
| Single 10-bit | 1 | ||
| Series Accumulation | 2 | 1 | After SAMPNUM conversions |
| Burst Accumulation | 3 | SAMPNUM | After SAMPNUM conversions |
In addition to the ordinary operating modes, an Accumulator Test mode is available. See the Accumulator Test section for more information.