2.7-inch 128x64 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
Description
The WEP012864U is a graphic OLED display featuring a COG structure with a resolution of 128x64 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
Data source ref:WEP012864ULAP3N00000
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. |
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| 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. |
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| 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. |
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| 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. |
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| 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. |
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| 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. |
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17 |
CS# | Chip Select This pin is the chip select input. The chip is enabled for MCU communication only when CS# is pulled low. |
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| 18 | NC | No connection. | |||||||||||||||
| 19 | BS2 | Communicating Protocol Select. These pins are MCU interface selection input. See the following table:
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| 20 | BS1 | ||||||||||||||||
| 21 | NC | No connection. | |||||||||||||||
| 22 | NC | No connection. | |||||||||||||||
| 23 | NC | No connection. | |||||||||||||||
| 24 | NC | No connection. | |||||||||||||||
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
| 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
| 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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