eblc1388 said:
From the last page in original datasheet link you have posted.
A 4us delay resulted in some 50mV net voltage on segments and the manufacturer's specification is max 60mV. That's very close to the limit.
So your 15us delay would possibly result in a lot more net voltage?
That's correct, I missed that.
I don't know what the manufacturers specification says regarding net voltage.
I could try to find out.
If it really is impossible to to this with direct drive from the PIC pins to the LCD pins, does anyone have an idea of a circuit that would help? I'd rather throw in more components than burning out my LCD in a week :roll:
Edit: Perhaps I should find a circuit that generates -3V, and then switch from +3V to -3V on the segments and leave the common pin at GND. I could use some transistors to switch the voltage or perhaps some IC supplied with -3V as Vss, and +3V as Vdd that outputs Vss to Vdd signals.