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The application note AN52927 explains how to interface multiplexed segment LCD glass to PSoC3.
PSoC3 device is equipped with segment LCD driver which allows segment LCD glass to be directly driven without using any external components.
The driver supports LCDs upto 16 commons and can drive upto 768 segments. PSoC Creator tool provides Segment LCD component which simplifies the task of handling different types of segment LCD features such as 7-segment, 14-segment, 16-segment, Dot-Matrix and special symbols. This application note explains how to use Segment LCD component for a given LCD specifications.