3.75-inch 240x128 COG Graphic LCD Module - RX240128C
3.75-inch 240x128 COG Graphic LCD Module - RX240128C
3.75-inch 240x128 COG Graphic LCD Module - RX240128C
3.75-inch 240x128 COG Graphic LCD Module - RX240128C
3.75-inch 240x128 COG Graphic LCD Module - RX240128C

3.75-inch 240x128 COG Graphic LCD Module (UC1528c)

Model No. RX240128C

The RX240128C is a 3.75-inch 240x128 COG LCD module. The module dimensions are 98.7 x 67.7 x 5.7 mm, with an active area of 83.975 x 44.775 mm. It uses a 1/128 Duty driving scheme and integrates the UC1528c IC. The module supports multiple interface options, including 6800/8080 parallel and 4-line SPI/I²C, ensuring flexible integration with a wide range of embedded systems. The product utilizes Chip-on-Glass (COG) technology, providing a compact and reliable solution for various applications.

The RX240128C is rated for operation from -20°C to +70°C, with a logic supply voltage range of 2.7V to 3.3V. This module is designed to deliver stable performance across diverse industrial and consumer applications, maintaining reliable operation in challenging environments.

For further technical support and integration assistance regarding the RX240128C, please feel free to contact us.

Data Source ref: RX240128C-BIW

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
Size (Diagonal) 3.75 inch
Dot Matrix / Resolution 240×128 dots
Module Dimension 98.7 × 67.7 × 5.7 mm
Viewing Area 92.0 × 53.0 mm
Active Area 83.975 × 44.775 mm
Dot / Pixel Size 0.325 × 0.325 mm
Dot / Pixel Pitch 0.35 × 0.35 mm
Backlight Type LED
IC UC1528c
Interface 6800/8080/4-Line SPI/I2C
Power Supply 3.0V (Typ)
Duty 1/128Duty，1/12Bias
Type Graphic Display LCD
Pin No Symbol Function Description
1 ESD ESD
2 VB0+ LCD Bias Voltages.
3 VB1+
4 VB1-
5 VB0-
6 VLCD High voltage LCD Power Supply.
7 VDD Power supply
8 VDD
9 VSS Ground
10 BM1 Bus mode: The interface bus mode is determined by BM[1:0]:  
Mode BM[1:0]
8080 (8-bit) 10
6800 (8-bit) 11
4-wire SPI w/ 8-bit token (S8) 01
2-wire SPI (I²C) 00
11 BM0
12 WR1 WR[1:0] controls the read/write operation of the host interface. See section Host Interface for more detail.
13 WR0
14 CD Select Control data or Display data for read/write operation.
”L”: Control data     ”H”: Display data / command
15 CS1 Chip Select. Chip is selected when CS1=”H” and CS0 = “L”. When the chip is not selected, DB[7:0] will be high impedance.
16 CS0
17 RST Hardware reset input pin
18 D0 Bi-directional bus for both serial and parallel host interfaces.
In serial modes, connect DB[0] to SCK, DB[3] to SDAI for write and DB[5:4] to SDAO for read. SDAI and SDAO may be connected together if necessary.
  D7 D6 D5 D4 D3 D2 D1 D0
8-bit
(BM=1x)		 DB[7:0]
S8
(BM=01)		 - - SDAO SDAO SDAI - - SCK
I²C
(BM=00)		 - - SDAO SDAO SDAI - - SCK
Connect unused pins to VSS.
19 D1
20 D2
21 D3
22 D4
23 D5
24 D6
25 D7
26 ESD ESD

3.75-inch 240x128 COG Graphic LCD Module - RX240128C Contour Drawing

Item Symbol Min Typ Max Unit
Operating Temperature TOP -20 － +70 ℃
Storage Temperature TST -30 － +80 ℃
Supply Voltage For Logic VDD -0.3 － +4.0 V
Supply Voltage For LCD Drive VLCD -0.3 － +18.0 V
Input Voltage Range VIN -0.4 － VDD+0.5 V
Item Symbol Condition Min Typ Max Unit
Supply Voltage For Logic VDD-VSS － 2.7 3.0 3.3 V
Supply Voltage For LCM VLCD Ta=-20℃
Ta=25℃
Ta=70℃		 －
14.9
－		 －
15.2
－		 －
15.5
－		 V
V
V
Input High Volt. VIH － 0.8 VDD － VDD V
Input Low Volt. VIL － VSS － 0.2 VDD V
Output High Volt. VOH － 0.8 VDD － VDD V
Output Low Volt. VOL － VSS － 0.2 VDD V
Supply Current
(No include LED Backlight)		 IDD VDD=3.0V － 1.18 2.5 mA

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