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dsPIC33A 12-bit 40MSPS Analog-to-Digital Converter (ADC) Deep Dive

Data Channel Natural Priority

Last modified by Microchip on 2026/03/31 08:18
   Data Channel Configuration  Analog Inputs   

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priority diagram

This diagram shows that each Analog-to-Digital Converter (ADC) core (ADC1 to ADC5) supports multiple data channels. Each data channel selects its input using configuration bits.

ADC1, ADC2, ADC3, and ADC4 each support up to eight data channels and ADC5 supports up to 16 data channels.

Data channels are prioritized by their channel number; the lower the number, the higher the priority.

  • This allows you to control which analog signals are processed first, making it easy to set application-specific priorities.
  • An example of such is shown in the right column of the table, titled Application Benefits, where you can tailor the natural channel priorities to the importance of a specific analog input.

Channel natural priority is especially important when multiple channels request conversion at the same time, ensuring the most important signals are handled first.