>Also does anyone know how variable WDT period is between IC's?
>The Microchip data sheet just gives min typical and max.

Doesn't that define the variability??  You'll never get anyone to tell you
*exactly* what percentage your particular chip will vary, only the max, min,
and typical.

I suppose if you need more graphical information, sometimes the end of the
datasheet offers production variability curves, showing a nice bell curve of
the production quantities falling into each standard deviation.

--Andrew

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