3 Replies Latest reply on Feb 24, 2016 9:29 AM by jonathan.earl_1591236

    Fast Digital Capture to Analyze Frequency

    jonathan.earl_1591236

      I want to be able to measure the frequency of an incoming square wave signal (0-5V).  Because I want to be able to use equivalent-time sampling to measure frequencies above the max CPU frequency of the PSoC, I simply want to be able capture high or low as fast as possible (at regular, known intervals) and store the results for processing.  

         

      Is there a way to do this with a digital input pin?  Or do I need to use a serial communication block like SPI?

         

      Thanks,

         

       - John E.