2.8-inch 256x64 COF OLED Display Support Grayscale with PCB and Frame
Model No. WEN025664A
►Graphic OLED Display
►2.8" OLED
►Structure: COF + Frame + PCB
►256×64 Dot Matrix
►IC：SSD1322
►3V power supply
►1/64 duty cycle
►Interface: 6800, 8080, SPI
►Display Color: White / Yellow
►Support Grayscale
Description
The WEN025664A series is a 2.8-inch monochrome graphic COF OLED display with a resolution of 256x64 dots. It is equipped with the SSD1322 IC and supports multiple interfaces, including 6800/8080 8-bit and 3/4-wire SPI interfaces. The module dimensions of the WEN025664A are 85.0 × 39.8 mm, and the active area is 69.1 × 17.26 mm.
The WEN025664A OLED series operates on a 3V power supply with a driving method of 1/64 duty. It supports grayscale and boasts a high contrast ratio of 10,000:1. The module is capable of functioning in temperatures ranging from -40°C to +80°C, with a storage temperature range of -40°C to +83°C.
Featuring a metal frame with a PCB board and four screw holes, the WEN025664A facilitates easy installation for customers. The OLED series, equipped with a PCB board, can effortlessly connect with applications using wires, eliminating the need for customers to develop additional PCB boards. The integration of interface settings and VDD circuits enhances user-friendliness. Additionally, the four screw holes on the PCB simplify the installation process onto the application product.
The WEN025664A series also offers an option with the same OLED panel but with a touch panel. Please choose the WEN025664A-CTP series for the touch panel option.
DRAWING
Data source ref: WEN025664ALAP3N00000
SPECIFICATIONS
Interface Pin Function
| Pin Number | Symbol | I/O | Function | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | VSS | P | Ground. | ||||||||||
| 2 | VDD | P | Power Supply for Core Logic Circuit Power supply pin for core logic operation. A capacitor is required to connect between this pin and VSS |
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| 3 | N.C. | P | Reserved Pin The N.C. pin between function pins are reserved for compatible and flexible design. |
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| 4 | D/C# | I | Data/Command Control This pin is Data/Command control pin connecting to the MCU. When the pin is pulled HIGH, the content at D[7:0] will be interpreted as data. When the pin is pulled LOW, the content at D[7:0] will be interpreted as command. |
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| 5 | R/W# (WR#) |
I | Read/Write Select or Write This pin is MCU interface input. When interfacing to a 68XX-series microprocessor, this pin will be used as Read/Write (R/W#) selection input. Pull this pin to “High” for read mode and pull it to “Low” for write mode. When 80XX 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 CS# is pulled low. When serial mode is selected, this pin must be connected to VSS. |
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| 6 | E/RD# | I | Read/Write Enable or Read This pin is MCU interface input. When interfacing to a 68XX-series microprocessor, this pin will be used as the Enable (E) signal. Read/write operation is initiated when this pin is pulled high and the CS# is pulled low. When connecting to an 80XX-microprocessor, this pin receives the Read (RD#) signal. Data read operation is initiated when this pin is pulled low and CS# is pulled low. When serial mode is selected, this pin must be connected to VSS. |
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| 7~14 | DB0 | I/O | Host Data Input/Output Bus These pins are 8-bit bi-directional data bus to be connected to the microprocessor’s data bus. When serial mode is selected, DB1 will be the serial data input SDIN and DB0 will be the serial clock input SCLK. |
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| DB1 | |||||||||||||
| DB2 | |||||||||||||
| DB3 | |||||||||||||
| DB4 | |||||||||||||
| DB5 | |||||||||||||
| DB6 | |||||||||||||
| DB7 | |||||||||||||
| 15 | NC | P | Reserved Pin The N.C. pin between function pins are reserved for compatible and flexible design. |
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| 16 | RES# | I | 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# | I | Data/Command Control This pin is the chip select input connecting to the MCU. The chip is enabled for MCU communication only when CS# is pulled LOW. |
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| 18 | NC | P | Reserved Pin The N.C. pin between function pins are reserved for compatible and flexible design. |
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| 19 | BS1 | I | Communicating Protocol Select These pins are MCU interface selection input. See the following table:
(1) 0 is connected to VSS (2) 1 is connected to VDD |
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| 20 | BS0 | ||||||||||||
| 21~24 | NC | P | Reserved Pin The N.C. pin between function pins are reserved for compatible and flexible design. |
General Specification
| Item | Dimension | Unit |
|---|---|---|
| Dot Matrix | 256 × 64 Dots | － |
| Module dimension | 85.0 × 39.8 × 7.2 Max. | mm |
| Active Area | 69.1 × 17.26 | mm |
| Pixel Size | 0.248×0.248 | mm |
| Pixel Pitch | 0.27×0.27 | mm |
| Display Mode | Passive Matrix | |
| Display Color | Monochrome | |
| Drive Duty | 1/64 Duty | |
| OLED IC | SSD1322 (COF) | |
| OLED Interface | 6800, 8080, SPI | |
| Size | 2.8 inch | |
Absolute Maximum Ratings
| Parameter | Symbol | Min | Max | Unit |
|---|---|---|---|---|
| Supply Voltage for Display | VDD | -0.3 | 4 | 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 | － | 2.8 | 3.0 | 3.3 | V |
| High Level Input | VIH | － | 0.8×VDD | － | VDD | V |
| Low Level Input | VIL | － | 0 | － | 0.2×VDD | V |
| High Level Output | VOH | － | 0.9×VDD | － | VDD | V |
| Low Level Output | VOL | － | 0 | － | 0.1×VDD | V |
| Display 50% Pixel on | IDD | VDD =3V | － | 125 | 250 | mA |
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