2.7 OLED Display Module, COG Graphic 2.7 OLED - REX012864K
2.7 OLED Display Module, COG Graphic 2.7 OLED - REX012864K
2.7 OLED Display Module, COG Graphic 2.7 OLED - REX012864K
2.7 OLED Display Module, COG Graphic 2.7 OLED - REX012864K

2.7 OLED Display Module 128×64 COG (SSD1309 IC;Frame Options;FPC Options)

Model No. REX012864K

The REX012864K is a 2.7-inch 128×64 COG Graphic OLED display module with Frame Option and flexible FPC options, including ZIF and Hotbar FPC. This 2.7 OLED display delivers sharp monochrome output with emitting colors available in white, yellow, green, and sky blue. With its slim 73.0 × 41.86 × 2.11 mm design, the 2.7 OLED module is ideal for handheld devices, control panels, and industrial equipment.

Built for reliability, the REX012864K operates in a wide temperature range from -40°C to +80°C and supports storage up to +85°C. Its efficient voltage range (2.8–3.3V logic, 12–14V display) ensures stable and long-lasting performance. This versatile 2.7 OLED display module provides a durable solution for diverse embedded applications.

If you need technical support or product quotes for the REX012864K or other 2.7 OLED display modules, please feel free to contact our sales team!

Data Source Ref: REX012864KYAP3N00000

Inquiry or Demo Code Datasheet Back Previous Next
  • General Specs
  • Interface Pin Function
  • Contour Drawing
  • Absolute Maximum Ratings
  • Electrical Characteristics
  • Options
Item Dimension Unit
Structure COG; Frame Option
Size (Diagonal) 2.7 inch
Dot Matrix / Resolution 128 × 64 dots
Module Dimension 73.0 × 41.86 × 2.11 mm
Viewing Area 63.41 × 32.69 mm
Active Area 61.41 × 30.69 mm
Dot / Pixel Size 0.45 × 0.45 mm
Dot / Pixel Pitch 0.48 × 0.48 mm
Emitting Color OLED, White / Yellow / Green / Sky Blue
Display Mode Passive Matrix
IC SSD1309
Interface 8080 / 6800 / SPI / I2C
Power Supply 3V
Duty 1/64 duty
Operating Temperature -40~+80 °C
Storage Temperature -40~+85 °C
Polarizer Type Polarizer optional
FPC Options Yes
Type 2.7 OLED Graphic Display

Pin Function of the REX012864K 2.7 OLED Display Module

Pin No. Symbol Function
1 NC(GND) No Connection
2 VSS Ground.
3~10 NC No connection
11 VDD Power supply pin for core logic operation
12 BS1 MCU bus interface selection pins. Select appropriate logic setting as described in the following table. BS2, BS1 and BS0 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 
13 BS2
14 NC No connection
15 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).
16 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.
17 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. When 3-wire serial interface is selected, this pin must be connected to VSS.
18 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.
19 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.
28 IREF This pin is the segment output current reference pin.
IREF is supplied externally.
29 VCOMH COM signal deselected voltage level.
A capacitor should be connected between this pin and VSS.
30 VCC Power supply for panel driving voltage. This is also the most positive power voltage supply pin.
31 NC(GND) No connection

2.7 OLED Mechanical Outline and Dimensions

2.7 OLED Display Module, COG Graphic 2.7 OLED - REX012864K Contour Drawing

Operating Condition of the 2.7 OLED Display

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 -40 +80 °C
Storage Temperature TSTG -40 +85 °C

Power and Voltage Requirements for 2.7 OLED Display Module

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 13 14 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

Frame Options

Drawing Material FR No. Detailed Drawing Create Date
REH012864K SUS-304 FFL60128640A221XXX00 View 20120131

FPC Options

Drawing FPC Length PIN pitch ZIF / HOTBAR FPC Interface FPC No. Create Date
 FPC2050003111XXXXX01_REX012864K 36 31 0.5 ZIF 6800, 8080, SPI, I2C FPC2050003111XXXXX01 20140923
 FPC2050002211XXXXX03_REX012864K 69.85 22 0.5 ZIF 6800, 8080, SPI, I2C FPC2050002211XXXXX03 20161207
 FPC2050002411XXXXX11_REX012864K 105.57 30 0.5 ZIF 6800, 8080, SPI, I2C FPC2050003011XXXXX11 20170406
 FPC2050003011XXXXX11_REX012864K 42 24 0.5 ZIF 6800, 8080, SPI, I2C FPC2050002411XXXXX11 20191218

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