HD66704 - Hitachi Semiconductor

HD66704 Liquid Crystal Display Controller/Driver

The HD66704 LCD controller and driver LSI is used to display alphanumeric characters, katakana, hiragana, a variety of symbols, and seven-segment numerals. It can be connected to a high-performance microcomputer via a high-speed clock-synchronized serial connection or on a four-bit bus. The HD66704 is capable of displaying two 16-character lines and 160 segm.

Features

• Two 16-character lines (5-by-8-dot fonts) and 160 segments
• 320 segments with blinking control (at 1/4-duty drive)
• Wide range of operating voltages  VCC = 1.8 to 5.5 V (LCD drive voltage: VLCD = 3.0 to 6.5 V)
• Double or triple step-up circuit for LCD drive voltage
• 1/2- to 1/5-bias bleeder-resistors and voltage followers for LCD-drive power supply
• 25-level electronic potentiometer
• High-speed clock-synchronized serial interface (5 MHz) and high-speed 4-bit bus interface
• Continuous writing of data thanks to the zero instruction-execution time (wait-free writing)
• 80 × 8-bit displa.