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2.7 inch,128x64 COG Graphic OLED Display with Frame - WEF012864K
2.7 inch,128x64 COG Graphic OLED Display with Frame - WEF012864K
2.7 inch,128x64 COG Graphic OLED Display with Frame - WEF012864K
2.7 inch,128x64 COG Graphic OLED Display with Frame - WEF012864K
2.7 inch,128x64 COG Graphic OLED Display with Frame - WEF012864K

2.7 inch,128x64 COG Graphic OLED Display with Frame

Model No. WEF012864K

►Type: Graphic
►Structure: COG+Frame
►Size: 2.7 inch
►128x64 Dot Matrix
►IC：SSD1309
►3V Power supply
►1/64 duty
►Interface: 6800, 8080, SPI, I2C
►Display Color: White / Yellow / Sky Blue / Green

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Description

WEF012864K is a COG graphics 2.7 inch monochrome PMOLED display module with a panel resolution of 128x64 pixels and high contrast (10,000:1). WEF012864K has a built-in SSD1309 controller IC, which supports multiple transmission interfaces: 6800, 8080, 4-Wire SPI and I2C serial interface. It uses 3V driver and adopts 1/64 Duty mode.

WEF012864K module adopts the same 2.7-inch OLED panel as WEO012864K, but with an added iron frame for convenient customer fixture.

WEF012864K is a COG structure OLED display module. It is organic self-luminous and does not require a backlight. The module is thin and light and has low current consumption. The WEF012864K module is very suitable for handheld products, measuring instruments, household products, POS systems, Internet of Things, Communication equipment and medical equipment, etc. The operating temperature of this module is -40℃ to +80℃, and the storage temperature is -40℃ to +85℃.

DRAWING

2.7 inch,128x64 COG Graphic OLED Display with Frame - WEF012864K
Data source ref:WEF012864KWPP3N00000

SPECIFICATIONS

Interface Pin Function

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 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
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

General Specification

Item Dimension Unit
Dot Matrix 128 x 64 dots
Module dimension 89.7 × 47.2 × 3.4 mm
Active Area 61.41 × 30.69 mm
Pixel Size 0.45 × 0.45 mm
Pixel Pitch 0.48 × 0.48 mm
Display Mode Passive Matrix
Display Color Monochrome
Drive Duty 1/64 Duty
IC SSD1309
Interface 6800,8080,4-Wire SPI,I2C
Size 2.7 inch

Absolute Maximum Ratings

Parameter Symbol Min Max Unit
Supply Voltage for Logic VDD -0.3 4.0 V
Supply Voltage for Display VCC 0 17.0 V
Operating Temperature TOP -40 +80 °C
Storage Temperature TSTG -40 +85 °C

Electrical Characteristics

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 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

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