migration from 16F876a to 18F25k22

[Demon]

This is for the D13700F01, but it might help you. I got it here, tons of datasheets under S1D13700*
http://www.datasheetking.com

This is how I got somewhere with several of these poorly documented LCDs. When I had nothing I'd go through controllers with similar names and find one with similar specs.

When in doubt, don't go over 5 volts (and maybe 3 volts with these newer models). At worst, it won't work.

Usually, the variable voltage is for contrast or brightness. That's why I bought a selection of potentiometers; start high and work my way down until "something happens".

Robert