20MHz crystal


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  1. #4
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    I think Mel's hit it right on the head....

    The MClR pin.....


    Make sure you are not programming your chip with the MCLR pin as a reset. Make it a "input"... and/or tie it to 5 volts.

    Dwayne


    PS: One other thing... If you don't use switches to toggle the flags on your programmer, the MCLR seems to default to "reset"... Thus you changing it to "input pin" will be nullified when you attempt to program your chip a second time. I have been caught with my pants down a few times on this <g>... This I use Switches in my program now, for setting the Melabs programmer to the proper configuration.
    Last edited by Dwayne; - 23rd June 2005 at 17:42.
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