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31.3.3.4.2 Accumulated Conversion

The figure below shows the timing diagram for the ADC when accumulating two samples in Accumulation mode.

Figure 31-5. Timing Diagram - Accumulated Conversion

The number of samples to accumulate is configured with the Sample Number (SAMPNUM) bit field in the Control B (ADCn.CTRLB) register. The STCONV bit is set for the entire conversion. The total conversion time for n samples is given by:

Total Conversion Time (12-bit) $= \frac{2}{f_{CLK_PER}} + n (\frac{13 .5 + 2}{f_{CLK_ADC}} + \frac{2}{f_{CLK_PER}})$

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