> In a noisy system, if MCLR dips below it's trigger point even
> for a few
> nanosecs, the PIC can do funny things.  One of the most
> common symptoms is
> partial reset.  The PIC does not reset it's program counter,
> but will run
> really, really slow or do other crazy things.  Scoping the
> MCLR pin with a
> fast scope revealed the problem.

IIRC the newer PICs have an internal filer on the /MCLR?

If your system is that noise, wouldn't it impact other lines as well? I
would not feel very comfortable with just a cap on the /MCLR...

Wouter van Ooijen

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