HD66712 Datasheet | Hitachi Semiconductor

Description The HD66712 dot-matrix liquid crystal display controller and driver LSI displays alphanumerics, numbers, and symbols. It can be configured to drive a dot-matrix liquid crystal display under the control of a serial or a 4- or 8-bit microprocessor. Since all the functions such as display RAM, character generator, and liquid crystal driver, required for driving a dot-matrix liquid crystal display are internally provided on one chip, a minimum system can be interfaced with this controller/driver. A single HD66712 is capable of displaying a single 24-character line, two 24-character lines, or four 12-character lines. The HD66712 software is upwardly patible with the LCDII (HD44780) which allows the user to easily replace an LCD-II with an HD66712. In addition, the HD66712 is equipped with functions such as segment displays for icon marks, a 4-line display mode, and a horizontal smooth scroll, and thus supports various display forms. This achieves various display forms. The HD66712 character generator ROM is extended to generate 240 5 × 8 dot characters. The low-voltage operation (2.7 V) of the HD66712, bined with a low-power mode, is suitable for any portable battery-driven product requiring low power consumption. Features - 5 × 8 dot matrix possible - Clock-synchronized serial interface capability; can interface with 4- or 8-bit MPU - Low-power operation support: - 2.7 to 5.5 V (low voltage) - Wide liquid-crystal voltage range: 3.0 to 13.0 V max. - Booster for liquid crystal voltage - Two/three times (13 V max.) - High-speed MPU bus interface (2MHz at 5-V operation) - Extension driver interface - Character display and independent 60-icon mark display possible - Horizontal smooth scroll by 6-dot font width display possible - 80 × 8-bit display RAM (80 characters max.) - 9,600-bit character generator ROM - 240 characters (5 × 8 dot) - 64 × 8-bit character generator RAM - 8 characters (5 × 8 dot) - 16 × 8-bit segment icon mark - 96-segment icon mark - 34-mon...