Oscillators, counts, clock cycles, config settings ......& women

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  1. - 13th September 2010, 12:25 #2
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    Acetronics2
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    Hi, Hank

    Let 's see ...

    @ 20Mhz clock ( better say : Xtal ) ...

    you have .200µs for a timer 1 without prescaler increment ... ( internal clock is 1/4 the Xtal Freq ... )

    so, 1000/.200 = 5000 ... ( let's forget Interrupt duration for the moment )

    if my math still " not so bad " ...

    now ... just a 1:2 ratio to dig out ...

    So, IF you sure your Xtal is a 20 Mhz one ...

    only your settings ( full listing SVP !!! ) AND your interrupt stubb could enlight this 3rd millenium mystery ...

    Alain
    Last edited by Acetronics2; - 13th September 2010 at 12:27.
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    Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
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    IF there is the word "Problem" in your question ...
    certainly the answer is " RTFM " or " RTFDataSheet " !!!
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