2.7-inch 128×64 COG OLED Display Support Grayscale with PCB and Frame

Model No. WEP012864U

  • Type: Graphic
  • Structure: COG + Frame + PCB
  • Size: 2.7 inch
  • 128 x 64 Dot Matrix
  • IC：SSD1357
  • 3V Power supply
  • 1/64 duty
  • Interface: 6800, 8080, SPI, I2C
  • Display Color: White / Yellow
  • Support Grayscale
Categories: ,

Description

The WEP012864U is a graphic OLED display featuring a COG structure with a resolution of 128×64 dots and a 2.7-inch (61.41 × 30.69 mm) active area. The module is equipped with the SSD1357 IC, supporting 6800/8080 8-bit and 4-wire SPI, as well as I2C interfaces. The display supports 4-bit grayscale, with a logic voltage of 3V and a duty cycle of 1/64.

The WEP012864U OLED series comes with a metal frame and a PCB board that easily connects to the application via wires. Customers are not required to develop additional PCB boards themselves, as it integrates interface settings and VCC circuits, simplifying the user experience. The PCB is designed with four screw holes for easy installation of the module on the application product.

This OLED module boasts a high contrast ratio of 10,000:1, allowing for more vibrant and deeper blacks, as well as brighter whites. This leads to enhanced image quality, sharper details, and improved readability. The module is operational within a temperature range of -40℃ to 80℃, with storage temperatures spanning from -40℃ to 85℃.

It is ideal for wall/meter devices, home applications, financial-POS, Cloud/IoT systems, intelligent technology devices, energy systems, communication systems, medical instruments, etc.

Additionally, similar OLED panels are available in the WEO012864U series without a metal frame and PCB, and the WEF012864U series with a metal frame but without a PCB. If you have touch functionality requirements, please consider the WEP012864U-CTP series.

Drawing

Drawing

WEP012864U

Data source ref:WEP012864ULAP3N00000

SPECIFICATIONS

SPECIFICATIONS

Interface Pin Function

No. Symbol Function
1 VSS This is a ground pin.
2 VDD Power supply pin for core logic operation
3 NC Reserved Pin
The N.C. pin between function pins is reserved for compatible and flexible design.
4 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.
5 R/W#
(WR#)		 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.
6 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.
7 DB0 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.
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.
8 DB1
9 DB2
10 DB3
11 DB4
12 DB5
13 DB6
14 DB7

15		 NC No connection.
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		 CS# Chip Select
This pin is the chip select input. The chip is enabled for MCU communication only when CS# is pulled low.
18 NC No connection.
19 BS2 Communicating Protocol Select.
These pins are MCU interface selection input. See the following table:

BS1 BS2
I2C 1 0
4-wire Serial 0 0
8-bit 8080 Parallel 1 1
8-bit 6800 Parallel 0 1
20 BS1
21 NC No connection.
22 NC No connection.
23 NC No connection.
24 NC No connection.

Mechanical Data

Mechanical Data

Item Dimension Unit
Dot Martix 128 x 64 Dots
Module dimension 82.0 × 47.5 × 7 Max. 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
Gray Scale 4 bits
IC SSD1357
Interface 8-bits 6800 and 8080 parallel, 4-Wire SPI, I2C
Size 2.7 inch

Absolute Maximum Ratings

Absolute Maximum Ratings

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

Electronical Characteristics

Electronical Characteristics

Item Symbol Condition Min Typ Max Unit
Supply Voltage for Logic VDD － 2.8 3.0 3.3 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
Display 50% Pixel on IDD VDD =3V － 120 180 mA

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