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产品叙述
WEN025664A 系列是一款 2.8 英寸单色图形 COF OLED 显示模块，分辨率为 256×64 dots。该模块搭载 SSD1322 驱动 IC，支持 6800/8080 8-bit 并行接口及 3-/4-wire SPI接口。模块尺寸为 85.0 × 39.8 mm，有效显示区域为 69.1 × 17.26 mm。
该系列采用 3V 电源及 1/64 duty 驱动方式，支持灰阶显示，对比度可达 10,000:1。工作温度范围为 -40°C ~ +80°C。
该模块采用金属框架与 PCB 设计，并提供四个安装孔，便于整机结构安装。PCB 已集成接口及电源（VDD）电路，可通过导线直接连接，无需额外开发 PCB。另提供电容式触控版本：WEN025664A-CTP。
规格图
Data source ref: WEN025664ALAP3N00000
产品规格
规格说明
| 项目 | 尺寸 | 单位 |
|---|---|---|
| 点阵 | 256 × 64 Dots | － |
| 模块尺寸 | 85.0 × 39.8 × 7.2 Max. | mm |
| 有效区域 | 69.1 × 17.26 | mm |
| 点大小 | 0.248 × 0.248 | mm |
| 点间距 | 0.27 × 0.27 | mm |
| 显示模式 | 被动矩阵 | |
| 发光颜色 | 单色 | |
| 驱动方式 | 1/64 Duty | |
| OLED IC | SSD1322 (COF) | |
| OLED 接口 | 6800, 8080, SPI | |
| 尺寸(对角线) | 2.8 寸 | |
最大绝对额定值
| 参数 | 符号 | 最小值 | 最大值 | 单位 |
|---|---|---|---|---|
| 显示电源电压 | VDD | -0.3 | 4 | V |
| 工作温度 | TOP | -40 | +80 | °C |
| 储存温度 | TSTG | -40 | +85 | °C |
电气特性
DC 电气特性
| 项目 | 符号 | 条件 | 最小值 | 典型值 | 最大值 | 单位 |
|---|---|---|---|---|---|---|
| 逻辑电源电压 | VDD | － | 2.8 | 3.0 | 3.3 | V |
| 输入高准位 | VIH | － | 0.8×VDD | － | VDD | V |
| 输入低准位 | VIL | － | 0 | － | 0.2×VDD | V |
| 输出高准位 | VOH | － | 0.9×VDD | － | VDD | V |
| 输出低准位 | VOL | － | 0 | － | 0.1×VDD | V |
| 50%显示画面耗电流 | IDD | VDD =3V | － | 125 | 250 | mA |
Pin功能定义
| Pin Number | 符号 | I/O | 功能说明 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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. |