128×64, 2.42 inch COG Graphic OLED Display with Frame

Model No. WEF012864G

Type: Graphic
Structure: COG+Frame
Size: 2.42 inch
128×64 Dot Matrix
IC：SSD1309
3V Power supply
1/64 duty
Interface: 6800, 8080, SPI, I2C
Display Color: White / Yellow / Sky Blue / Green

Categories: Graphic OLED Display, OLED Module

Description

WEF012864G is a 2.42 inch graphic COG monochrome PMOLED display module with an iron frame and a panel resolution of 128×64 pixels with high contrast (10,000:1). WEF012864G has a built-in SSD1309 controller IC and supports a variety of interfaces, including 6800, 8080, 4-Wire SPI and I2C interfaces. It uses a 3V driver with a 1/64 duty cycle. The series uses the same size OLED panels as the existing WEO012864G:

WEO012864G series adopts iron frameless design.
WEO012864G-CTP series adopts iron frameless + capacitive touch screen (CTP).

WEF012864G is a COG structure OLED display module. It is organic, self-illuminating and does not require a backlight. This module is thin, light and has low power consumption. The WEF012864G module is very suitable for handheld products, measuring instruments and household products, and can be used in the Internet of Things, communication equipment and medical instruments. The operating temperature of this module is -40℃ to +80℃, and the storage temperature is -40℃ to +85℃.

Drawing

128x64, 2.42 inch COG Graphic OLED Display with Frame - WEF012864G

Data source ref:WEF012864GLAP3N00000

SPECIFICATIONS

Interface Pin Function

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

General Specification

Item	Dimension	Unit
Dot Matrix	128 x 64	dots
Module dimension	77.2 × 42.14 × 3.4	mm
Active Area	55.01 × 27.49	mm
Pixel Size	0.40 × 0.40	mm
Pixel Pitch	0.43 × 0.43	mm
Display Mode	Passive Matrix
Display Color	Monochrome
Drive Duty	1/64 Duty
IC	SSD1309
Interface	6800,8080,4-Wire SPI,I2C
Size	2.42 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	15.0	V
Operating Temperature	TOP	-40	+80	°C
Storage Temperature	TSTG	-40	+85	°C

Electronical Characteristics

DC Electrical Characteristics

Item	Symbol	Condition	Min	Typ	Max	Unit
Supply Voltage for Logic	VDD	－	1.65	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	－	18	27	mA

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