HD66727 - Hitachi Semiconductor

HD66727 Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver

The HD66727, dot-matrix liquid crystal display controller and driver LSI incorporating a key scan function, displays alphanumerics, katakana, hiragana, and symbols. It can be configured to drive a dotmatrix liquid crystal display and control key scan functions under the control of an I2C bus or a clocksynchronized serial microprocessor. A single HD66727 is c.

Features

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• Control and drive of a dot-matrix LCD with built-in key scan functions Four 12-character lines, 40 segments, and 12 annunciators Control of up to a 4 × 8-key matrix, 3 LED ports and 3 general ports Low-power operation support:  2.4 to 5.5V (low voltage)  Double or triple booster for liquid crystal drive voltage  Contrast adjuster and voltage followers for decreasing the direct current flow in the LCD drive bleeder-resistors  Standby mode and sleep mode  Displays up to 12 static annunciators
• I2C bus or clock-synchronized serial interface
• 60 × 8-bit display data RAM (60 characte.