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产品叙述
WEO025664D 是一款 3.55 英寸图形 COG OLED 显示模块，分辨率为 256×64 dots。该模块搭载 SSD1322 控制器 IC，支持 4-bit 灰阶显示，并提供 6800/8080 并行接口及 3-/4-wire SPI 接口。高对比度与宽视角特性，可在不同光照环境下保持稳定可视性。
该模块采用 3.3V 逻辑电压及 16V 显示驱动电压。典型工作电流为 35mA（VCC=16V，50% checkerboard）。驱动方式为 1/64 duty。
应用范围：医疗设备、控制面板、自助终端、售票设备及停车计费设备等，适用于需要紧凑型单色 OLED 显示的系统。工作温度范围为 -40°C ~ +80°C，存储温度范围为 -40°C ~ +85°C。
规格图
Data source ref: WEO025664DWPP3N00001
产品规格
规格说明
| 项目 | 规格 | 单位 |
|---|---|---|
| 分辨率 | 256 x 64 | - |
| 模块尺寸 | 99.2 × 33.5 × 2.01 | mm |
| 有效区域 | 87.52 × 21.28 | mm |
| 像素大小 | 0.312 × 0.303 | mm |
| 像素间距 | 0.342 × 0.333 | mm |
| 显示模式 | 被动矩阵 | |
| 显示颜色 | 单色 | |
| 灰阶 | 4 bits | |
| 驱动方式 | 1/64 Duty | |
| IC | SSD1322 | |
| 接口 | 6800, 8080, SPI | |
| 尺寸 | 3.55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 |
| I / O 引脚的电源电压 | 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 |
|---|---|---|---|---|---|---|
| 低电源 | VCI | － | 2.4 | 3.3 | 3.5 | V |
| 低压电源 | VCC | － | 10.0 | 16.0 | 16.5 | V |
| 逻辑电源电压 | VDD | － | 2.4 | － | 2.6 | V |
| I / O引脚的电源 | VDDIO | － | 1.65 | VCI | V | |
| 输入高电压 | VIH | － | 0.8×VDDIO | － | VDDIO | V |
| 输入低电压 | VIL | － | 0 | － | 0.2×VDDIO | V |
| 输出高电压 | VOH | － | 0.9×VDDIO | － | VDDIO | V |
| 输出低电压 | VOL | － | 0 | － | 0.1×VDDIO | V |
| 显示屏 50% 像素开启 | VCC =16 V | － | - | 35 | 55 | mA |
Pin功能定义
| Pin Number | 符号 | I/O | 功能说明 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | ESD_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:
Note (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 | ESD GND | P | Ground |