1 2 Previous Next 21 Replies Latest reply on Mar 21, 2015 10:50 PM by user_14586677

    PRiSM PSoC 5LP LED Flicker

    alex.roscoe

      I setup a basic PRiSM block connected to the onboard LED on the development kit.  I set my target Fout to 500 Hz and I see a lot of flicker.  The app note about PRiSM states that "FOUT ~= 300 Hz to have flicker free LED dimming" I can't seem to get it flicker free be 2 kHz.  I have validated Fout with my oscope and it does show 500 Hz.

         

      My setting are as follows:

         

      Fin                  = 2 kHz
      Pulse Density = 50%
      Resolution      = 8 bit

         

       

         

      Fin calculation
      Fout      = Fin    / 4  @ 50% pulse density
      500 Hz = 2 kHz / 4

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