3 Replies Latest reply on Apr 24, 2017 1:05 AM by cris.vilavedra

    Switching currents stress PSOC GPIOs?

    cris.vilavedra

      Hello.
      I recently made a design in which we have forgotten to put resistors to limit the current in the segments of a display (figure attached).

         

      I have configured by SW the brightness (refresh rate 100hz ) and "seems" to work everything well. But I see that there are current peaks of 50mA(peak of 200ms) when the GPIO can not give that, (4mA as source ,41mA Max) and the Vout in the GPIO drops to 2,5V in this moment. I wonder if PSOC is suffering. Is it so?. PsoC has any type of current limitation to avoid this kind of problem?
      Best regards.