INTRODUCTION

ST7578 is a driver & controller LSI for graphic dot-matrix liquid crystal display systems. It contains 102-segment and 65-common with 1-icon-common driver circuits.

FEATURES

Single-chip LCD Controller & Driver

Driver Output Circuits

102-segment / 65-common+1-icon-common(1/66 duty)

On-chipDisplayDataRam

- Capacity: 66X102= 6,732 bits

Microprocessor Interface

- 8-bit parallel bi-directional interface supports 6800-series or 8080-series MPU

- 3-line & 4-line SPI (serial peripheral interface) are available(write only)

External RESB (reset) pin

Built-in oscillation circuit

- Oscillatorrequires no external component

LowPowerConsumption AnalogCircuit

- Voltage booster (X4, X5)

- Voltageregulator generates LCD operating voltage (T emperature Gradient: -0.1 1/°C)

- Electronic contrast control (255 steps)

- Voltagefollower generates LCD bias voltages (1/4 ~ 1/1 1 bias)

Wide supply voltage range

- VDD1 –VSS1: 1.8 ~ 3.3V

- VDD2- VSS2: 2.4 ~ 3.3V

Display supply voltage range

- Application Voprange : 4V ~9.5V

- Programmable voltage(Vop): 10.56V (max)

Temperature range:-30to+85°C

Support LCD Module Sizeupto 1.8”