ST7576

ST www.DataSheet4U.com Sitronix 1. INTRODUCTION ST7576 66 x 102 Dot Matrix LCD Controller/Driver The ST7576 is a driver & controller LSI for graphic dot-matrix liquid crystal display systems. It contains 102 segments and 65 common with 1 ICON driver circuits. This chip is connected directly to a microprocessor, accepts 3-line or 4-line serial peripheral interface (SPI), I2C interface or 8-bit parallel interface, display data can stores in an on-chip display data RAM of 66 x 102 bits. It performs display data RAM read/write operation with no external operating clock to minimize power consumption. In addition, because it contains power supply circuits to drive liquid crystal, it is possible to make a display system with the fewest components. 2. FEATURES Single-chip LCD controller & driver Driver Output Circuits 102 segment / 65 common+1 ICON common (1/66 duty) 102 segment / 16 common+1 ICON common (1/17 duty) (1/17 duty is under partial screen mode) On-chip Display Data Ram Capacity: 66X102=6,732 bits Generation of intermediate LCD bias voltages Oscillator requires no external components (external clock also possible) Voltage converter X4; X5 Voltage follower On-chip electronic contrast control function (255 steps) External RESB (reset) pin Logic supply voltage range VDD1 -VSS : 1.8 to 3.3V VDD2 -VSS : 2.4 to 3.3V Microprocessor Interface 8-bit parallel bi-directional interface with 6800-series or 8080-series 4-line SPI (serial peripheral interface) available (only write...