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dan7
Visitor II
July 20, 2006
Question

GPIO timing

  • July 20, 2006
  • 2 replies
  • 759 views
Posted on July 20, 2006 at 12:49

GPIO timing

    This topic has been closed for replies.

    2 replies

    D
    dan7Author
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 09:30

    How many clock cycles take GPIO operations: OUT and IN?

    For example what maximal frequency I can have on the pin just toggling

    it 1 and 0?

    Comparing the Phlips ARM7, running at 60MHz gives something

    about 3.5MHz maximum.

    K
    kais
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 09:30

    Hi vdaniel,

    I have tested the GPIO toggling frequency under a 25MHZ CPU frequency and I have seen that I can increase the frequency, when I optimize well the code and use the buffering Access.

    In my case of trial I have reached 2.1MHZ.

    Regards .

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