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产品叙述
WEX025664B 是一款 3.12 英寸图形 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。模块外形尺寸为 88.0 × 27.8 mm，有效显示区域为 76.778 × 19.178 mm。
该显示模块支持 4-bit 灰阶显示，逻辑电压为 2.5V（typ.），采用 1/64 duty 驱动方式。对比度可达 10,000:1，工作温度范围为 -40°C ~ +80°C，存储温度范围为 -40°C ~ +85°C。
WEX025664B 系列适用于需要灰阶显示的紧凑型单色 OLED 应用，如测量设备、手持设备、POS 系统、IoT 设备、通信设备及医疗仪器等。如需不同结构或触控方案，可选择以下相关型号：
- WEX025664B-CTP：COF 结构，配备 CTP 触控面板（不含金属框和 PCB）。
- WEN025664B：COF 结构，带金属框和 PCB。
- WEN025664B-CTP：COF 结构，带金属框、PCB 及 CTP 触控面板。
规格图
Data source ref: WEX025664BWPP3N00000
产品规格
规格说明
| 项目 | 尺寸 | 单位 |
|---|---|---|
| 点阵 | 256 x 64 Dots | － |
| 模块尺寸 | 88.0 × 27.8 × 2.15 | mm |
| 有效区域 | 76.778×19.178 | mm |
| 像素大小 | 0.278×0.278 | mm |
| 像素间距 | 0.3×0.3 | mm |
| 显示模式 | 被动矩阵 | |
| 发光颜色 | 单色 | |
| 驱动方式 | 1/64 Duty | |
| 灰阶 | 4 bits | |
| IC | SSD1322 (COF) | |
| 接口 | 6800, 8080, SPI | |
| 尺寸 | 3.12 寸 | |
最大绝对额定
| 参数 | 符号 | 最小值 | 最大值 | 单位 |
|---|---|---|---|---|
| 工作电源电压 | VCI | -0.3 | 4 | V |
| 逻辑电源电压 | VDD | -0.5 | 2.75 | V |
| I/O pin 供电电压 | VDDIO | -0.5 | VCI | V |
| 显示电源电压 | VCC | -0.5 | 20 | V |
| 工作温度 | TOP | -40 | 80 | °C |
| 储存温度 | TSTG | -40 | 85 | °C |
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 | － | 2.4 | 2.5 | 2.6 | V |
| I/O Pin 电源 | VDDIO | － | 1.65 | 3.0 | VCI | V |
| 低压电源 | VCI | － | 2.4 | 3.0 | 3.5 | V |
| 显示电源电压 | VCC | － | 11.5 | 14.5 | 15 | V |
| 输入高准位 | VIH | － | 0.8×VDDIO | － | VDDIO | V |
| 输入低准位 | VIL | － | 0 | － | 0.2×VDDIO | V |
| 输出高准位 | VOH | － | 0.9×VDDIO | － | VDDIO | V |
| 输出低准位 | VOL | － | 0 | － | 0.1×VDDIO | V |
| 50%显示画面耗电流 | ICC | VCC =12V | － | 24 | 32 | mA |
| VCC =14.5V | － | 32 | 42.5 | mA |
Pin功能定义
| Pin Number | 符号 | I/O | 功能说明 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | N.C. (GND) | P | Ground | ||||||||||
| 2 | VSS | P | Ground. | ||||||||||
| 3 | VCC | P | Power supply for panel driving voltage. This is also the most positive power voltage supply pin. |
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| 4 | VCOMH | P | COM signal deselected voltage level. A capacitor should be connected between this pin and VSS. |
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| 5 | VLSS | P | Analog system ground pin. | ||||||||||
| 6~13 | D7~D0 | 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, D1 will be the serial data input SDIN and D0 will be the serial clock input SCLK. |
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| 14 | 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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| 15 | R/W# | 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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| 16 | BS0 | 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 VDDIO |
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| 17 | BS1 | ||||||||||||
| 18 | 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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| 19 | 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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| 20 | 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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| 21 | FR | O | This pin is No Connection pins. Nothing should be connected to this pin. This pin should be left open individually. | ||||||||||
| 22 | IREF | I | Current Reference for Brightness Adjustment This pin is segment current reference pin. A resistor should be connected between this pin and VSS. Set the current lower than 10uA. |
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| 23 | N.C. | - | Reserved Pin The N.C. pin between function pins are reserved for compatible and flexible design. |
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| 24 | VDDIO | P | Power Supply for I/O Pin It should be matched with the MCU interface voltage level. |
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| 25 | 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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| 26 | VCI | P | Power Supply for Operation VCI must always be equal to or higher than VDD and VDDIO. |
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| 27 | VSL | P | Voltage Output Low Level for SEG Signal This is segment voltage reference pin. When external VSL is not used, this pin should be left open. When external VSL is used, this pin should connect with resistor and diode to ground. |
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| 28 | VLSS | P | Ground of Analog Circuit These are the analog ground pins. They should be connected to VSS externally. |
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| 29 | VCC | P | Power Supply for OLED Panel These are the most positive voltage supply pin of the chip. They must be connected to external source. |
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| 30 | N.C. (GND) | P | Ground |