Figure 6.1: System Block Diagram
All liquid crystal displays require two power sources VCC for logic circuits and VEE for Liquid Crystal (LC) drive. Some graphics LCD modules will run directly of a single VCC supply by generating the VEE voltage on-board; others will require an external DC-DC converter to generate the negative VEE voltage. Refer to individual specifications for details.
Figure 6.1: System Block Diagram
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