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”