HD66704 Description
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 microputer 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 segments or one 16-character line and 240 segments in its...
HD66704 Key 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 display data RAM (80 characters max)
- 17,280-bit (5 × 8 dots : 432 characters) character generator ROM