PRiSM PSoC 5LP LED Flicker

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cross mob
Anonymous
Not applicable

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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