OLED Capacitive Touchscreen Display - REX012864G-CTP

OLED Capacitive Touchscreen Module 2.42-inch 128x64 COG (SSD1309 IC)

Model No. REX012864G-CTP

The REX012864G-CTP is a 2.42-inch 128×64 COG graphic OLED capacitive touchscreen display module. With a wide active area of 55.01 × 27.49 mm and passive matrix design, it delivers sharp and reliable performance. The module supports multiple interface options, ensuring flexible system integration. Available emitting colors include white, yellow, sky blue, and green, making this OLED capacitive touch screen suitable for diverse application needs.

Built for durability and versatility, the REX012864G-CTP operates within -20°C to +70°C, making it ideal for industrial instruments, handheld devices, and modern HMI systems. Powered by the SSD1309 display IC and GT911 capacitive OLED touch controller, it provides responsive operation with stable voltage ranges. This oled capacitive module combines slim design, high reliability, and simplified assembly for advanced user experiences.

For technical support or product quotes for the REX012864G-CTP or other OLED capacitive touchscreen display modules, please contact our sales team.

Data Source Ref: REX012864GYPP3L00000

Inquiry or Demo Code

Datasheet

Back

General Specs
Interface Pin Function
Contour Drawing
Absolute Maximum Ratings
Electrical Characteristics

Item	Dimension	Unit
Structure	COG
Size (Diagonal)	2.42	inch
Dot Matrix / Resolution	128 × 64	dots
Module Dimension	66.8 × 41.3 × 3.71	mm
Viewing Area	56.01 × 28.49	mm
Active Area	55.01 × 27.49	mm
Emitting Color	OLED, White / Yellow / Sky Blue / Green
Display Mode	Passive Matrix
IC	SSD1309
Interface	8-bit 6800 8000 / 4-wire SPI / I2C
PCAP IC	GT911
PCAP Interface	I2C
Detect Points	1	Points
Touch Panel	Capacitive Touch Panel
Surface	Normal Glare
Power Supply	3V
Duty	1/64 duty
Operating Temperature	-20~+70	°C
Storage Temperature	-30~+80	°C
Polarizer Type	Polarizer Optional
Type	OLED Graphic Display, OLED Touch Display

Supported Interface Options (6800 / 8080 / SPI / I2C)

Pin No.

Symbol

Function

NC(GND)

No connection

VSS

Ground.

3-10

No connection

VDD

Power supply pin for core logic operation

BS1

MCU bus interface selection pins. Select appropriate logic setting as described in the following table. BS2 and BS1 are pin select

	BS1	BS2
I2C	1	0
4-wire Serial	0	0
8-bit 68XX parallel	0	1
8-bit 80XX parallel	1	1

Note
(1) 0 is connected to VSS
(2) 1 is connected to VDD

BS2

No connection

CS#

This pin is the chip select input connecting to the MCU.
The chip is enabled for MCU communication only when CS# is pulled LOW (active LOW).

RES#

This pin is reset signal input.
When the pin is pulled LOW, initialization of the chip is executed.
Keep this pin pull HIGH during normal operation.

D/C#

This pin is Data/Command control pin connecting to the MCU.
When the pin is pulled HIGH, the data at D[7:0] will be interpreted as data.
When the pin is pulled LOW, the data at D[7:0] will be transferred to a command register.
In I2C mode, this pin acts as SA0 for slave address selection.

R/W#

This pin is read / write control input pin connecting to the MCU interface.
When 6800 interface mode is selected, this pin will be used as Read/Write (R/W#) selection input. Read mode will be carried out when this pin is pulled HIGH and write mode when LOW.
When 8080 interface mode is selected, this pin will be the Write (WR#) input. Data write operation is initiated when this pin is pulled LOW and the chip is selected.
When serial or I2C interface is selected, this pin must be connected to VSS.

E/RD#

This pin is MCU interface input.
When 6800 interface mode is selected, this pin will be used as the Enable (E) signal.
Read/write operation is initiated when this pin is pulled HIGH and the chip is selected.
When 8080 interface mode is selected, this pin receives the Read (RD#) signal. Read operation is initiated when this pin is pulled LOW and the chip is selected.
When serial or I2C interface is selected, this pin must be connected to VSS.

20~27

D0~D7

These pins are bi-directional data bus connecting to the MCU data bus.
Unused pins are recommended to tie LOW.
When serial interface mode is selected, D0 will be the serial clock input: SCLK; D1 will be the serial data input: SDIN and D2 should be kept NC.
When I2C mode is selected, D2, D1 should be tied together and serve as SDAout, SDAin in application and D0 is the serial clock input, SCL.

IREF

This pin is the segment output current reference pin.
IREF is supplied externally.

VCOMH

COM signal deselected voltage level.
A capacitor should be connected between this pin and VSS.

VCC

Power supply for panel driving voltage. This is also the most positive power voltage supply pin.

NC(GND)

No connection

CTP PIN Definition

No.	Symbol	Function
1	GND	Power ground
2	VDD	Power supply
3	INT	Interrupt signal, active low, asserted to request Host start a new transaction
4	SDA	I2C data signal
5	SCL	I2C clock signal
6	RST	External reset signal, active low
7	GND	Power ground
8	GND	Power ground
9	GND	Power ground
10	GND	Power ground

Outline Dimension of REX012864G-CTP

OLED Capacitive Touchscreen Display Module - REX012864G-CTP Contour Drawing - Raystar

Absolute Maximum Ratings

Parameter	Symbol	Min	Max	Unit
Supply Voltage for Logic	VDD	-0.3	4	V
Supply Voltage for Display	VCC	0	15	V
Operating Temperature	TOP	-20	+70	°C
Storage Temperature	TSTG	-30	+80	°C

Capacitive Touch Controller (GT911)

Parameter	Symbol	Min	Max	Unit
Power Supply Voltage	VDD	2.66	3.47	V

DC Electrical Characteristics

Item	Symbol	Condition	Min	Typ	Max	Unit
Supply Voltage for Logic	VDD	－	2.8	3.0	3.3	V
Supply Voltage for Display	VCC	－	12.5	13.0	13.5	V
High Level Input	VIH	－	0.8×VDD	－	－	V
Low Level Input	VIL	－	－	－	0.2×VDD	V
High Level Output	VOH	－	0.9×VDD	－	－	V
Low Level Output	VOL	－	－	－	0.1×VDD	V
50% Check Board Operating Current		VCC =13.0V	－	22	33	mA

Touch Panel Controller GT911

Item	Symbol	Min	Typ	Max	Unit
Supply Voltage	VDD	2.8	3.0	3.3	V
Input High Volt	VIH	0.75xVDD		VDD+0.3	V
Input Low Volt	VIL	-0.3	－	0.25xVDD	V
Output High Volt	VOH	0.85xVDD	－	－	V
Output Low Volt	VOL	－	－	0.15xVDD	V