Graphic COG LCD 256×128

Model No. WO256128A

  • LCD COG Module
  • Graphic LCD
  • 256×128 dots
  • IC: ST75256
  • +3.3V power supply
  • 1/128 duty cycle
  • Interface : 6800/8080/SPI/I2C
Category:

Description

WO256128A is a monochrome graphic LCD module made of 256×128 pixels, diagonal size 2.9 inch. This LCD Module WO256128A is built in with ST75256 controller IC, it supports 6800 8-bit, 8080 8-bit parallel and 4-wire serial SPI and I2C interface. The WO256128A is having the same outline dimension, and VA size and same power supply 3.3V as WO12864D3, but is having a much higher resolution and performance. The WO125128A is an upgrade version of WO12864D3 to meet with the customers’ requirement on higher resolution and the best thing is that the customers don’t have to change the mechanical design for their applications.

This module can be operating at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃. The WO256128A is available for different LCD mode options, STN Negative, FSTN Negative (Double film) and FSTN positive and with LED backlight options, like white LED. Please contact with us if you need different LCD type and LED combination.

Drawing

Drawing


Data source ref: WO256128A-TFH#

Specifications

Specifications

Interface Pin Function

Pin No. Symbol Description
1 ITOGND ESD PIN
2 VG Power of SEG-drivers
3 V0 Positive operating voltage of COM-drivers
4 XV0 Negative operating voltage of COM-drivers
5  CA1P DC/DC Voltage converte pin
6 CA1N DC/DC Voltage converte pin
7 VDDA +3.3V
8 VDD +3.3V
9 VSS ground
10 COMSCN Set scan directing of COM
11 IF1 These pins select interface operation mode

IF1 IF0 MPU interface type
L L 4-line serial interface
L H IIC serial interface
H L 8-bit 6800 parallel interface
H H 8-bit 8080 parallel interface

Note: Refer to “Parallel / Serial Interface” for detailed information.
12 IF0
13 CSB Chip select input pin
14 A0 Whether the access is related to data or command
15 ERD Read or write enable terminal
16 RWR Read/Write execution control pin
17 RSTB Reset input pin
18~25 D0~D7 Data bus line
26 ITOGND ESD PIN

Mechanical Data

Mechanical Data

Item Dimension Unit
Number of dots 256 × 128 －
Module dimension 80.0 × 54.0 × 9.5 mm
View area 70.7 × 38.8 mm
Active area 66.54 × 33.26 mm
Dot size 0.24 × 0.24 mm
Dot pitch 0.26 × 0.26 mm
Drive Method 1/128 DUTY,1/12 BIAS
Backlight Type LED
IC ST75256i
Interface 4-Line SPI/IIC/8-bit 6800/8-bit 8080

Absolute Maximum Ratings

Absolute Maximum Ratings

Item Symbol Min Typ Max Unit
Operating Temperature TOP -20 － 70 ℃
Storage Temperature TST -30 － 80 ℃
MPU Interface Input Voltage VIN -0.3 － VDD+0.3 V
Digital Power Supply Voltage VDD-Vss -0.3 － 4.0 V
LCD Power supply voltage V0- XV0 -0.3 － 19.0 V

Electrical Characteristics

Electrical Characteristics

Item Symbol Condition Min Typ Max Unit
Supply Voltage For Logic VDD-VSS － 3 3.3 3.6 V
Supply Voltage For LCM VOP Ta=-20℃
Ta=25℃
Ta=70℃		 －
14.2
－		 －
14.5
－		 －
14.8
－		 V
V
V
Input High Volt. VIH － 0.7 VDD － VDD V
Input Low Volt. VIL － VSS － 0.3 VDD V
Output High Volt. VOH － 0.8 VDD － VDD V
Output Low Volt. VOL － VSS － 0.2 VDD V
Supply Current IDD VDD=3.3V － 1.5 － mA

Search keyword: 256×128 lcd, 256 x 128 lcd, lcd 256×128, lcd 256 x 128

Related products

Graphic COG LCD 256×128

Add to cart