41.3.3.3 Aborting a Conversion

These actions will abort an ongoing conversion:

Writing STOP to the START bit field in the Command (ADCn.COMMAND) register
Writing a new value that changes the Reference Selection bit field (REFSEL) in the Control C (ADCn.CTRLC) register during a conversion
Writing a new value that changes Positive Input Multiplexer (ADCn.MUXPOS) register

This will result in undefined values in the Result (ADCn.RESULT) and Sample (ADCn.SAMPLE) registers.

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