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ST7290 Graphical LCD Module (128x64px)

[Click the image to enlarge it]

Pin Configuration

Pin No.

Pin Name

Description

1

Gnd

Ground terminal

2

Vcc

Positive Input Voltage terminal

3

Vo

LCD contrast

4

RS

Register Select 

RS = 0: Instruction Register

RS = 1: Register Read

5

R/W

Read/Write control

6

E

Enable

7

DB0

 

8

DB1

 

9

DB2

 

10

DB3

Data Pins for 8/4 bit Parallel mode

11

DB4

 

12

DB5

 

13

DB6

 

14

DB7

 

15

PSB

Interface selection:

Low(0) - serial communication mode

High (1) - 8/4-bit parallel bus mode.

16

NC

Not connected

17

RST

Reset

18

Vout

LCD voltage doubler output. VOUT ≦ 7V.

19

BLA

Backlight positive supply

20

BLK

Backlight Negative supply

 

Features and Specification

  • Operating Voltage: 5V
  • Viewing angle: 6 ‘o’ clock
  • MCU I/F: Serial or 8-bit parallel
  • Display Color: Blue
  • ST7290 LCD controller/driver IC
  • Low power consumption
  • Automatic power on Reset
  • Graphic and Character mix modes display
  • Built-in Voltage booster
  • Display Construction: 128*64 dots
  • Display Mode: STN
  • Type: Chip On Board (COB)

 

Block Diagram

The image below shows the block diagram or internal structure of Graphical LCD. The controller used for the LCD is ST7290 LCD controller.

ST7290 Graphical LCD Block diagram

 

Where Graphical LCD are used?

A graphical LCD can be used in various electronic equipment where we need to display some character or image. Basically, these type of display used in medical, hand-held, security or industrial equipment. Also, Graphical LCD are used in various electronic DIY projects. It’s easy to interface it with micro-controller, Arduino and other controllers.

 

How to Use ST7290 GLCD?

There are two mode of interface in Graphical LCD:

  1. Serial Mode
  2. 8/4-bit Mode

Serial Mode:

To use in serial mode, you just have to ground PSB Pin which change the interface of Graphical LCD into serial as shown in image below:

 ST7290 Graphical LCD Serial mode

 

8/4-bit Mode:

To use in 8/4- bit Mode, you just have to connect the PSB to positive supply or 5v, which change the interface into parallel mode as shown in image below:

 ST7290 Graphical LCD Parallel mode

 

Graphical LCD with Arduino

As used in various electronic projects, generally we use Arduino to interface our Graphical LCD. When you are using a Graphical LCD with Arduino, I advise you to use it in serial mode, which will decrease the use of no. of pins. The below circuit diagram will help you to connect your Graphical LCD with Arduino in serial mode.

 ST7290 Graphical LCD with Arduino

 

Applications

  • Industrial devices
  • Embedded Systems
  • Security
  • Medical 
  • Hand-held equipment

 

2D-model

ST7290 Graphical LCD 2D-model




Download Datasheet PDF:
ST7290 GLCD Datasheet