7 Replies Latest reply on Jul 7, 2014 1:31 PM by jose.antonio.epsarza

    Providing negative value to an analog pin in PSoC

    jose.antonio.epsarza

       Hi all,

         

      At the moment I am trying to provide a negative value to a comparator positive input pin, so the comparator output will be triggered high once a negative voltage goes lower than this defined threshold.

         

      Unfortunatelly it looks like the PSoC does not accept a negative signal. I have checked this with scope and anything that goes below 0 Volts just disappears from the input signal.

         

      Am I doing somethign wrong or this is, in fact, the way it is?

         

      Thanks.