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by jetro57070
Thu Jun 22, 2006 9:56 am
Topic: LCD power supply VO
Replies: 3
Views: 14579

LCD power supply VO

Why is the LCD voltage different than the logic power supply? The datasheet shows a pot to create VDD-VO at the VO pin on the LCD. is this for contrast? I thought contrast is controlled by software commands. Also why would you need a pot? datasheet shows VDD-VO to be 0.5v, why not use a voltage divi...