HD66712U

 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 5.5V (low voltage)
    Wide liquid-crystal voltage range: 2.7 to 11.0V max.
 Booster for liquid crystal voltage
    Two/three times (13V 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-common * 60-segment liquid crystal display driver
Programmable duty cycle
   (See List 1)
Software upwardly compatible with HD44780
Wide range of instruction functions:
   Functions compatible with LCD-II: Display clear, cursor home, display on/off, cursor on/off,display character blink, cursor shift, display shift
   Additional functions: Icon mark control, 4-line display, horizontal smooth scroll, 6-dot characterwidth control, white-black inverting blinking cursor
Automatic reset circuit that initializes the controller/driver after power on (standard version only)
Internal oscillator with an external resistor
Low power consumption
TCP-128 pin, bare-chip

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 controlof a serial or a 4- or 8-bit microprocessor. Since all the functions such as display RAM, charactergenerator, and liquid crystal driver, required for driving a dot-matrix liquid crystal display are internallyprovided 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 compatible with the LCDII (HD44780) which allows the user toeasily replace an LCD-II with an HD66712. In addition, the HD66712 is equipped with functions such assegment displays for icon marks, a 4-line display mode, and a horizontal smooth scroll, and thus supportsvarious display forms. This achieves various display forms. It character generator ROM isextended to generate 240 5 × 8 dot characters.

The low-voltage operation (2.7V) of the HD66712, combined with a low-power mode, is suitable for anyportable battery-driven product requiring low power consumption.