Description
The HD66710 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 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.

FEATUREs
• 5 × 8 dot matrix possible
• Low power operation support:
    - 2.7V to 5.5V (low voltage)
• Booster for liquid crystal voltage
    - Two/three times (13V max.)
• Wide range of liquid crystal display driver voltage
    - 3.0V to 13V
• Extension driver interface
• High-speed MPU bus interface (2 MHz at 5-V operation)
• 4-bit or 8-bit MPU interface capability
• 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)
• 8 × 8-bit segment RAM
    - 40-segment icon mark
• 33-common × 40-segment liquid crystal display driver
• Programmable duty cycle (See List 1)
• 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 character width control, white-black inverting blinking cursor
• Software upwardly compatible with HD44780
• Automatic reset circuit that initializes the controller/driver after power on
• Internal oscillator with an external resistor
• Low power consumption
• QFP1420-100 pin, TQFP1414-100 pin bare-chip