Auracher J|r wrote:
>
> hello .
>
> im using an Pic with an Xtal of 4Mhz and an delay routine that takes
> 4*250 cycles
> this is an delay of 1ms
>
> I measure these time and the output frequency is 625hz (1.6kHz)
>
> my anwers: could the Cext=22pF (Capacitor between xtal and gnd) be to
> low
>                   or is this a problem in my programm (i disabled Wdt /
> Gie)?

Use MPSIM or MPLAB to simulate your code and verify that it does take
exactly 1mS to complete the delay.

Then check the Xtal circuit.

--
Best regards

Tony

http://www.picnpoke.com
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