HD66725 - Hitachi Semiconductor

HD66725 (Graphics LCD Controller/Driver with Key Scan Function)

The HD66724/HD66725, dot-matrix graphics LCD controller and driver LSI incorporating a key scan function up to a 4-by-8 key matrix, display characters such as alphanumerics, katakana, hiragana and symbols as well as graphics such as kanji and pictograms. They can be configured to drive a dot-matrix liquid crystal display and control key scan functions under .

Features

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• Control and drive of a character and graphics LCD with built-in key scan functions Three 12- (16-) character lines, 72 (96) -by-24 dot graphics, and 144 (192) segments 48 (64) grayscale segments Control up to a 4 × 8 (32 key) matrix key scan. 3 general ports built-in Low-power operation support: 1 HD66724/HD66725     Vcc = 1.8 to 5.5 V (low voltage) VLCD = 3.0 to 6.5 V (liquid crystal drive voltage) Single, double or triple booster for liquid crystal drive voltage Contrast adjuster and voltage followers to decrease direct current flow in the LCD drive bleederresistors  Wake-.