Round LCD Display, Round LCD Screen Module 128x128 with PCB - RX128128A2
Round LCD Display, Round LCD Screen Module 128x128 with PCB - RX128128A2
Round LCD Display, Round LCD Screen Module 128x128 with PCB - RX128128A2

Round LCD Display, Round LCD Screen Module 128x128

Model No. RX128128A2

RX128128A2 is an extension model of RX128128A (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. Circular LCD screen is a trending item in the market, and is suitable for equipment that requires round displays such as industrial gauges.

RX128128A2 is a dot matrix 128x128 round LCD display module with PCB. This 128x128 LCD module has many interface options to choose from, including 8-bit parallel interface 8080 or 6800 mode, 4-line SPI or 3-line SPI mode and I2C interface.

Supply voltage value of RX128128A2 round LCD screen ranges from 3.0V-3.6V, the typical value is 3.3V. The module works within the temperature -20 to +70℃, storage temperature covers from-30 to +80℃.

Link to Related Product RX128128A

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 128 × 128 dots
Module Dimension 60.0 × 62.79 × 8.6 mm
View Area 42.0 × 42.0 mm
Active Area 44.0 × 44.0 mm
Dot / Pixel Size 0.308 × 0.308 mm
Dot / Pixel Pitch 0.310 × 0.310 mm
Backlight Type LED
IC ST75161
Interface Default 8080 ; Option 6800, SPI 4-Line & SPI 3-Line 9-bit, I2C
Power Supply 3V
Duty 1/136 Duty,1/12 Bias
Type Graphic LCD Display Module
Pin No. SYMBOL Function
1 VDD Power supply
2 NC No Connection
3 VSS Ground
4 CSB Chip select input pin.
5 A0 It determines whether the access is related to data or command.
6 ERD Read / Write execution control pin.
7 RWR Read / Write execution control pin.
8 RSTB Hardware reset input pin
9-16 D0-D7 When using 8-bit parallel interface: 8080 or 6800 mode:8 bit bi-directional data bus When using serial interface : 4-line SPI or 3-line SPI mode
D[7:4] : fix to “H” by VDD1.  D[3:1] : serial input/output data (SDA).
D[0] : serial input clock (SCL). D1 to D3 must be connected together (SDA)
When using serial interface : I2C interface
D[7] : SA[1], I2C slave address bit. Must be connected to VDD1 or VSS1. D[6] : SA[0], I2C slave address bit. Must be connected to VDD1 or VSS1.
D[5:4] : fix to “H” by VDD1. D[3:2] : SDA_OUT, serial data and acknowledge output for the I2C interface. D[1] : SDA_IN, serial input data D[0] : SCL, serial input clock .
D1 to D3 must be connected together (SDA)    
CSB must be fixed to “L” by VSS1.
17 A Anode input for LED backlight.
18 K Cathode input for LED backlight

 

Round LCD Display, Round LCD Screen Module 128x128 with PCB - RX128128A2

Item Symbol Min Typ Max Unit
Operating Temperature TOP -20 +70
Storage Temperature TST -30 +80
Power Supply Voltage VDD -0.3 4.0 V
LCD Power supply voltage VLCD -0.3 20 V
LCD Power supply voltage V0-XV0 -0.3 19 V
Input voltage VIN -0.3   VDD+0.3 V
Item Symbol Condition Min. Typ. Max. Unit
Supply Voltage For Logic VDD-VSS 2.7 3.0 3.3 V
Supply Voltage For LCD VOP Ta=-20℃
Ta=25℃
Ta=70℃

13.7

14.0

14.3
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=3.0V 2.0 mA
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