256x128 LCD Module with PCB, Graphic COG LCD 256x128 - RX256128A2
256x128 LCD Module with PCB, Graphic COG LCD 256x128 - RX256128A2

256x128 COG Graphic LCD Module with PCB

Model No. RX256128A2

RX256128A2 is an extension model of RX256128A (one of our best-selling COG LCDs). The PCB with four screw holes allows for easy mounting and quick assembly. All peripheral circuits are designed on the PCB making the module simpler and more user-friendly. Circuit design on customer’s end is reduced as the module works by simply entering the signal of module. Three different types of input port on PCB (i.e. port of Pitch 2.54, connector of Pitch 1.0, and Pitch 0.5) are reserved for customers to have more choices for input interface.

RX256128A2 is a dot matrix 256x128 monochrome COG+PCB Graphic LCD display module with LED backlight. The module dimension is 93.0 × 54.0 mm with active area size 66.54 ×33.26 mm. This module using ST75256 IC supports 8080, 6800, I2C and SPI-4 interface. Supply voltage for logic of this module ranges from 3V-3.6V, the typical value is 3V. Operating temperature ranges from -20 to +70°C; storage temperature covers from-30 to +80℃.

Data source ref: RX256128A2-FHW ★Link to Related Product RX256128A

Inquiry or Demo Code Datasheet Back Previous Next
  • General Specs
  • Interface Pin Function
  • Contour Drawing
  • Absolute Maximum Ratings
  • Electrical Characteristics
Item Dimension Unit
Structure COG+PCB
Dot Matrix / Resolution 256 × 128 dots
Module Dimension 93.0 × 54.0 × 9.5 mm
Viewing Area 70.7 × 38.8 mm
Active Area 66.54 × 33.26 mm
Dot / Pixel Size 0.24 × 0.24 mm
Dot / Pixel Pitch 0.26 × 0.26 mm
Backlight Type LED
IC ST75256
Interface Default 8080 ; Option 6800, SPI 4-Line, I2C
Power Supply 3.3V
Duty 1/128 Duty,1/12 Bias
Type Graphic LCD Module
Pin No. Symbol Description
1 VDD +3.3V
2 NC No connection
3 VSS ground
4 CSB Chip select input pin
5 A0 Whether the access is related to data or command
6 ERD Read or write enable terminal
7 RWR Read/Write execution control pin
8 RSTB Reset input pin
9~16 D0~D7 Data bus line
17 A LED+
18 K LED-

256x128 LCD, LCD 256x128, Graphic COG LCD 256x128, 256x128 LCD Module with PCB - RX256128A2

Link to Related Product RX256128A

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
Item Symbol Condition Min Typ Max Unit
Supply Voltage For Logic VDD-VSS 3.0 3.3 3.6 V
Supply Voltage For LCM VOP Ta=-20℃



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 2.0 mA