I believe your problem is this "80Mohm and a 16Mohm divider".
See section 21.1 in 18F4550 spec sheet.
It says the maximum recommended impedance for analog
sources is 2.5 kΩ.
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Re: Adcon register with P18F4550
I believe your problem is this "80Mohm and a 16Mohm divider".
See section 21.1 in 18F4550 spec sheet.
It says the maximum recommended impedance for analog
sources is 2.5 kΩ.
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