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”