2.7 inch 128x64 COG OLED Module with Frame - REH012864K
2.7 inch 128x64 COG OLED Module with Frame - REH012864K
2.7 inch 128x64 COG OLED Module with Frame - REH012864K
2.7 inch 128x64 COG OLED Module with Frame - REH012864K
2.7 inch 128x64 COG OLED Module with Frame - REH012864K
2.7 inch 128x64 COG OLED Module with Frame - REH012864K

2.7 inch 128x64 COG OLED Module with Frame

Model No. REH012864K

REH012864K is a dot matrix 128x64 COG graphic type OLED display module with frame. The size of the active area is 2.7” diagonal with module dimension 89.7x47.2 mm. This 2.7 inches OLED module has built-in IC SSD1309, and boasts high contrast ratio 10,000 : 1. There are many interface options to choose from, including 6800/ 8080, 4-wire SPI, I2C interface. The module works within temperature from -40℃ to +80℃; storage temperature range is -40℃ to +85℃.

Logic supply voltage ranges from 2.8V-3.3V, the typical value is 3V. The available emitting colors are white, yellow, green and sky blue. Feel free to send us inquiry if you’d like to know more information.

Data source ref: REH012864KWPP3N00000

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 + Frame
Size (Diagonal) 2.7 inch
Dot Matrix / Resolution 128 × 64 dots
Module Dimension 89.7 × 47.2 × 3.40 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 6800,8080,SPI,I2C
Power Supply 3V
Duty 1/64 duty
Operating Temperature -40~+80 °C
Storage Temperature -40~+85 °C
Type OLED Graphic Display
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 and BS1 are pin select
  BS1 BS2
I2C 1 0
4-wire Sereial 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 inch 128x64 COG OLED Module with Frame - REH012864K

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
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 =13V － 22.0 33.0 mA

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