產品敘述
WEO128128H是一款1.5吋COG圖形OLED顯示器模組，顯示畫面由128x128像素組成，且支援4位元灰階功能。
此模組電源電壓典型值為 3V，顯示器電源電壓典型值為12V，內建CH1120控制器IC，可支援I2C、SPI及8080並列介面；50%顯示畫面耗電流為20mA @ VCC 12V (白色)及14.5 V(黃色)。
WEO128128H COG OLED模組體積小、低功耗、輕薄，非常適合適用於智能家居應用、雲/物聯網系統、手持式儀器、智能技術設備、能源系統、汽車、通信系統、醫療儀器等。 WEO128128H 模組工作溫度為-40℃至+ 80℃，儲存溫度為-40℃至+85℃。
規格圖
Data source ref:WEO128128HLAP3N00000
產品規格
Pin功能定義
| No. | 符號 | 功能說明 | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | ESD_GND | This pin should be connected to GND. | |||||||||||||||
| 2 | VPP | This is the most positive voltage supply pin of the chip. It should be supplied externally. |
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| 3 | VCOMH | This is a pin for the voltage output high level for common signals. A capacitor should be connected between this pin and GND. |
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| 4 | VDD | Power supply for logic | |||||||||||||||
| 5 | NC | No connection | |||||||||||||||
| 6 | IM1 | These are the MPU interface mode select pins.
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| 7 | IM2 | ||||||||||||||||
| 8 | VSS | Ground for logic and analog. This pin should be connected to GND externally. | |||||||||||||||
| 9 | IREF | This is a segment current reference pin. A resistor should be connected between this pin and GND. |
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| 10 | CSB | This pin is the chip select input. When CSB = “L”, then the chip select becomes active, and data/command I/O is enabled. When in I2C interface, this pin is not used, so it must be connected to “L”. |
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| 11 | RESB | This is a reset signal input pin. When RESB is set to “L”, the settings are initialized. The reset operation is performed by the RESB signal level. This pin internal pull high. | |||||||||||||||
| 12 | A0 | This is the Data/Command control pin that determines whether the data bits are data or a command. A0 = “H”: the inputs at D0 to D7 are treated as display data A0 = “L”: the inputs at D0 to D7 are transferred to the command registers. In I2C interface, this pin serves as SA0 to distinguish the different address of OLED driver. When in 3-wire interface, this pin is not used, so it must be connected to “L”. |
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| 13 | WRB | This is a MPU interface input pin. When connected to an 8080 MPU, this is active LOW. This pin connects to the 8080 MPU WR signal. The signals on the data bus are latched at the rising edge of the WR signal When in 3-wire.4-wire & I2C interface, this pin is not used, so it must be connected to “L”. |
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| 14 | RDB | This is a MPU interface input pin. When connected to an 8080 series MPU, it is active LOW. This pin is connected to the RD signal of the 8080 series MPU, and the data bus is in an output status when this signal is “L”. When in 3-wire.4-wire & I2C interface, this pin is not used, so it must be connected to “L”. |
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| 15 | D0 | This is an 8-bit bi-directional data bus that connects to an 8-bit or 16-bit standard MPU data bus. When the serial interface(SPI) and I2C is selected, then D0 serves as the serial clock input pin (SCL) and D1 serves as the serial data input pin (SI). At this time, D2 to D7 are set to high impedance. D7~D2 is recommended to connect the VDD or GND. It is also allowed to leave D7~D2 unconnected. |
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| 16 | D1 | ||||||||||||||||
| 17 | D2 | ||||||||||||||||
| 18 | D3 | ||||||||||||||||
| 19 | D4 | ||||||||||||||||
| 20 | D5 | ||||||||||||||||
| 21 | D6 | ||||||||||||||||
| 22 | D7 | ||||||||||||||||
| 23 | VPP | This is the most positive voltage supply pin of the chip It should be supplied externally. |
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| 24 | ESD_GND | This pin should be connected to GND. |
規格說明
| 項目 | 規格說明 | 單位 |
|---|---|---|
| 點陣(解析度) | 128 × 128 | dots |
| 模組尺寸 | 33.80 x 36.50 x 2.01 | mm |
| 有效區域 | 26.86 x 26.86 | mm |
| 像素大小 | 0.185 x 0.185 | mm |
| 像素間距 | 0.210 x 0.210 | mm |
| 顯示模式 | Passive Matrix | |
| 顯示顏色 | Monochrome | |
| 驅動方式 | 1/128 Duty | |
| Gray Scale | 4 bits | |
| IC | CH1120 | |
| 介面 | 8080,SPI,I2C | |
| 尺寸 | 1.5 inch | |
最大絕對額定值
| 參數 | 符號 | 最小值 | 最大值 | 單位 |
|---|---|---|---|---|
| 邏輯電源電壓 | VDD | -0.3 | 3.5 | V |
| 顯示電源電壓 | VPP | -0.3 | 15.0 | V |
| 工作溫度 | TOP | -40 | +80 | °C |
| 儲存溫度 | TSTG | -40 | +85 | °C |
電氣特性
| 項目 | 符號 | 條件 | 最小值 | 典型值 | 最大值 | 單位 |
|---|---|---|---|---|---|---|
| 邏輯電源電壓 | VDD | － | 1.65 | 3.0 | 3.3 | V |
| 顯示電源電壓 | VPP | － | 8.0 | 14.5 | 15.0 | V |
| 輸入高電壓 | VIH | － | 0.8×VDD | － | VDD | V |
| 輸入低電壓 | VIL | － | GND | － | 0.2×VDD | V |
| 輸出高電壓 | VOH | － | 0.8×VDD | － | VDD | V |
| 輸出低電壓 | VOL | － | GND | － | 0.1×VDD | V |
| Display 50% Pixel on | IPP | VPP=14.5V | － | 20 | 30 | mA |
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