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产品叙述
WEX025664A 是一款 2.8英寸 COF结构图形 OLED 显示模块，分辨率为 256×64 dots。该模块内置 SSD1322 驱动 IC，支持 6800、8080 以及 SPI 接口，可灵活应用于各类系统设计。模块外形尺寸为 84.0 × 25.8 × 2.15 mm，显示区域为 69.098 × 17.258 mm。
该模块适用于工业设备、POS 系统、IoT 设备、手持仪器、车载设备及医疗设备等应用，同时也可作为传统 STN 显示器升级至 OLED 技术的解决方案。
规格图
产品规格
规格说明
| 项目 | 尺寸 | 单位 |
|---|---|---|
| 点阵 | 256 x 64 Dots | － |
| 模块尺寸 | 84.0×25.8×2.15 | mm |
| 有效区域 | 69.098×17.258 | mm |
| 像素大小 | 0.248×0.248 | mm |
| 像素间距 | 0.27×0.27 | mm |
| 显示模块 | 被动矩阵 | |
| 显示颜色 | 单色 | |
| 驱动方式 | 1/64 Duty | |
| IC | SSD1322 (COF) | |
| 接口 | 6800, 8080, SPI | |
| 尺寸 | 2.8 英寸 | |
最大绝对额定值
| 参数 | 符号 | 最小值 | 最大值 | 单位 |
|---|---|---|---|---|
| 逻辑电源电压 | VDD | -0.5 | 2.75 | V |
| 低压电源 | VCI | -0.3 | 4.0 | V |
| 输入/输出Pin供电电压 | VDDIO | -0.5 | VCI | V |
| 显示电源电压 | VCC | -0.5 | 20.0 | 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 | VCI | Note | 2.8 | 3.0 | 3.3 | V |
| 显示电源电压 | VCC | － | 14 | 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% 设备运行电流 | VCC =14.5V | 25 | 30 | 32 | mA | |
Pin功能定义
| Pin Number | 符号 | I/O | 功能说明 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Power Supply | |||||||||||||||||||
| 26 | VCI | P | Power Supply for Operation This is a voltage supply pin. It must be connected to external source & always be equal to or higher than VDD & VDDIO. |
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| 25 | VDD | P | Power Supply for Core Logic Circuit This is a voltage supply pin. It can be supplied externally (within the range of 2.4~2.6V) or regulated internally from VCI. A capacitor should be connected between this pin & VSS under all circumstances. |
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| 24 | VDDIO | P | Power Supply for I/O Pin This pin is a power supply pin of I/O buffer. It should be connected to VDD or external source. All I/O signal should have VIH reference to VDDIO. When I/O signal pins (BS0~BS1, D0~D7, control signals…) pull high, they should be connected to VDDIO. |
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| 2 | VSS | P | Ground of Logic Circuit This is a ground pin. It also acts as a reference for the logic pins. It must be connected to external ground. |
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| 3,29 | 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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| 5,28 | VLSS | P | Ground of Analog Circuit These are the analog ground pins. They should be connected to VSS externally. |
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| Driver | |||||||||||||||||||
| 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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| 4 | VCOMH | P | Voltage Output High Level for COM Signal This pin is the input pin for the voltage output high level for COM signals. A tantalum capacitor should be connected between this pin and VSS. |
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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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| Testing Pads | |||||||||||||||||||
| 21 | FR | O | This pin is No Connection pins. Nothing should be connected to this pin. This pin should be left open individually. | ||||||||||||||||
| 16 | BS0 | I | Communicating Protocol Select These pins are MCU interface selection input. See the following table:
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| 17 | BS1 | ||||||||||||||||||
| 20 | RES# | I | Power Reset for Controller and Driver This pin is reset signal input. When the pin is low, initialization of the chip is executed. |
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| 19 | CS# | I | 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 | D/C# | I | Data/Command Control This pin is Data/Command control pin. When the pin is pulled high, the input at D7~D0 is treated as display data. When the pin is pulled low, the input at D7~D0 will be transferred to the command register. For detail relationship to MCU interface signals, please refer to the Timing Characteristics Diagrams. |
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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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| 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. Unused pins must be connected to VSS except for D2 in serial mode. |
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| Reserve | |||||||||||||||||||
| 23 | N.C. | - | Reserved Pin The N.C. pin between function pins are reserved for compatible and flexible design. |
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| 1,30 | N.C. (GND) | - | Reserved Pin (Supporting Pin) The supporting pins can reduce the influences from stresses on the function pins. These pins must be connected to external ground. |
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