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Brilliant Crystal CM202-3SL YA LCD Module Datasheet

This document describes the CM202-3SL YA LCD module produced by Brilliant Crystal. It details the module's electrical characteristics, mechanical dimensions, and display capabilities, including a 4‑line 16×4 character layout with 5×8 dot matrix characters.

The datasheet also explains the internal architecture—controller, driver, bias circuit, and RAM/ROM structures—and provides the full command set, timing diagrams, and example sub‑routines for initializing and controlling the display. This manual is written in Chinese.

Covers: Internal Structure · Instruction Set · Busy Flag · Address Counter · Display Data RAM (DDRAM) · Character Generator ROM (CGROM)