ST7571中文资料矽创电子数据手册PDF规格书

INTRODUCTION

ST7571 is a driver & controller LSI for 4-level gray scale graphic dot-matrix liquid crystal display systems. This chip is connected directly to a microprocessor , accepts Serial Peripheral Interface (SPI), I2C or 8-bit parallel display data and stores in an on-chip display data RAM of 128 x 129 x 2 bits.

FEATURES

4-level (White, Light Gray , Dark Gray , Black) GrayScaleDisplay withPWM Method

Driver Output Circuits

- 128 segment outputs/ 128+1 common outputs

ApplicableDutyRatios

- V ariouspartial display

- Partial window moving& data scrolling

On-chipDisplayDataRAM

- Capacity: 128 x 129 x 2= 33,024 bits

Microprocessor Interface

- 8-bitparallel interface supports

6800-series or 8080-series MCU

- 4-line serial interface(4-Line SPI)

- 3-line serial interface(3-Line 8-bit SPI)

- I2C serial interface

On-chip LowPower Analog Circuits

- On-chip oscillator circuit

- Build-in Voltage converter ( x8)

- Voltageregulator (temperature gradient: -0.13/°C)

- On-chip contrast controlfunction(64 steps x 8)

- Voltagefollower (LCD bias : 1/5to 1/12)

Operating V oltageRange

- DigitalPower (VDD1): 1.8V~3.3V (cover 1.7V~3.4V)

- AnalogPower (VDD2, VDD3): 2.7V~3.3V (cover 2.6V~3.4V)

Package Type

- Application for COG