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TIC12400-Q1: ADC question

Peter Xu
Expert 6235 points
Part Number: TIC12400-Q1
Other Parts Discussed in Thread: TIC12400

Hi team,

Does the TIC12400 ADC block work properly in polling mode? For example, my customer wants to use ADC mode as a wake-up source. Is it possible?

Regards,

Peter

  • 0
    TI__Mastermind 34090 points

    Hi Peter,

    Yes, the ADC works in Polling Mode.  The only difference between Polling Mode and Continuous Mode is with how the wetting current is controlled.  In continuous mode, the wetting current is enabled when the Trigger bit is set to "1" and it remains on until the Trigger bit is set to "0".  In polling mode, the wetting current is enabled at the beginning of the polling/measurement cycle and then disabled after the measurement is complete and It remains disabled until the next polling cycle starts when the wetting current is enabled again and the process repeats.

    However, all aspects of the ADC and Comparator threshold configuration operate the same for both wetting current modes by using the interrupt (INT) pin as the indication of a INx pin state change.  Therefore you simply need to connect the INT pin to the MCU or Power Regulator Enable pin in such a way as it will wake up the MCU from sleep mode after it detects a state change on one of the INx pins.  An example of this is shown in the datasheet.

    Regards,

    Jonathan