2 Replies Latest reply on Apr 28, 2016 7:49 AM by user_1377889

    Frequency for GPIO pins

    cwicker_1641331

      Hi,

         

      I am very much a beginner trying to learn how to use Psoc for a project that involves converting an analog signal to digital and then transferring that data to a computer. I have a 100 Msps ADC that I originally thought I could use, but now I realize that there is probably some upper limit to the digital frequency that the GPIOpins /the Psoc in general can handle.

         

      I've tried digging around for this information, but I've come across a lot of conflicting things. I am using the CY8CKIT-001 -- does anyone know the frequency handled by the GPIO pins for either the Psoc 3 or Psoc 5 version in this kit? Or is this frequency also limited by say, using the microcontroller? 

         

      Thank you

        • 1. Re: Frequency for GPIO pins
          user_246598725

          Hi,

             

           

             
              

          ...does anyone know the frequency handled by the GPIO pins for either the Psoc 3 or Psoc 5 version...

             
             

          Yes, the datasheet knows those things. If I remember correctly, for PSoC 5LP, the maximum GPIO frequency is 33MHz. For PSoC 3, I don't know. Please verify by datasheet.

             

          Anyway, to solve your problem, I think you should tell us which ADC you're using and what the maximum expected frequency is.

             

           

             

          Regards,

             


          Ralf

          • 2. Re: Frequency for GPIO pins
            user_1377889

            In Creator just use the pin component datasheet to get the information you need. Ralf's estimation of 33MHz is correct for all PSoCs.

               

             

               

            Bob

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