2 Replies Latest reply on Apr 2, 2020 7:52 AM by KeEv_4623571

    Logic Levels for GPIO interrupts

    KeEv_4623571

      Hello,

       

      Forgive me if this is a duplicate or stupid question, but for some reason I cannot find it in the PDFs.

       

      Motivation:
      We have a sensor that generates anywhere from a .6 to .9V pulse given a certain stimulus (think piezoelectric accelerometer).  I am hoping to hook an interrupt to this signal to essentially keep a count, however I suspect that .6-.9V is below the threshold for digital logic.

       

      Obviously I could amplify this signal, but I am hoping to keep component count down, so my questions are:

      • What are the logic level thresholds for the psoc 6 GPIO interrupts?
      • Can those levels be tuned or are they relative to some reference voltage?

       

      Thanks for any help!