See note 3 under A/D Acquisition Requirements on the 16F877 datasheet.

QUOTE: "The maximum recommended impedance for analog sources is 10K
This is required to meet the pin leak-age specification."

This may have something to do with it. Pin leakage? Maybe that's what =
you are seeing.

Pete




> Using the F877, I have PortA configured for analog inputs,=20
> and had 10K pots.

> I've changed the pots to 50K now

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