ST7571 datasheet(1/76 Pages) SITRONIX

Part #	ST7571

Description	4 Gray Scale Dot Matrix LCD Controller/Driver

PDF	76 Pages

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Manufacturer	SITRONIX [Sitronix Technology Co., Ltd.]

Direct Link	http://www.sitronix.com.tw

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Sitronix

ST7571

4 Gray Scale Dot Matrix LCD Controller/Driver

Ver 1.5a

1/76

2009/7/21

1. 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), I

2C or 8-bit parallel display data and

stores in an on-chip display data RAM of 128 x 129 x 2 bits. It performs display data RAM write operation with no external

operating clock to minimize power consumption. In addition, because it contains power supply circuits necessary to drive

liquid crystal, it is possible to make a display system with the fewest components.

2. FEATURES

4-level (White, Light Gray, Dark Gray, Black) Gray Scale Display with PWM Method

DDRAM Data [ 2n : 2n+1 ]

2n

2n + 1

Gray Scale

0

White

0

1

Light gray

1

0

Dark gray

1

Black

(Accessible column address, n = 0, 1, 2,

……, 125, 126, 127)

Driver Output Circuits

-

128 segment outputs / 128+1 common outputs

Applicable Duty Ratios

-

Various partial display

-

Partial window moving & data scrolling

On-chip Display Data RAM

-

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

Microprocessor Interface

-

8-bit parallel interface supports

6800-series or 8080-series MCU

-

4-line serial interface (4-Line SPI)

-

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

-

I

2C serial interface

On-chip Low Power Analog Circuits

-

On-chip oscillator circuit

-

Build-in Voltage converter ( x8)

-

Voltage regulator (temperature gradient: -0.13%/

°C)

-

On-chip contrast control function (64 steps x 8)

-

Voltage follower (LCD bias : 1/5 to 1/12)

Operating Voltage Range

-

Digital Power (VDD1):

1.8V~3.3V (cover 1.7V~3.4V)

-

Analog Power (VDD2, VDD3):

2.7V~3.3V (cover 2.6V~3.4V)

Package Type

-

Application for COG

ST7571

6800 , 8080 ,

4-Line , 3-Line interface

(without I

2C interface)

ST7571i

I

2C interface

Sitronix Technology Corp. reserves the right to change the contents in this document without prior notice.

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