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Topics - Shaun_Caraway

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Graphic LCDs / Contrast supply for NHD‐24064WG‐ATFH‐VZ#
« on: May 19, 2014, 08:22:18 AM »
Hello

I am using the NHD‐24064WG‐ATFH‐VZ#. I have never used a graphics LCD before and am curious about the VEE voltage supply for this particular LCD contrast supply. According to the diagram in the data sheet on page 4 it would appear that the contrast voltage supply (VO) is created by using a voltage divider or some sort of potentiometer to allow adjustments hooked up between VEE (Pin #9 ) and VO (Pin #4) .



I see according to the table on page 4 of the data sheet that VEE is an output voltage and VO is labeled as supply voltage.



My question is do I need to supply VEE in addition to the VDD and the  LED +/- or is VEE supplied by the LCD module itself?

Thank you.

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