Frequency for GPIO pins

[Anonymous]

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

[RaAl_264636 · Accepted solution]

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

[Bob_Marlowe]

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