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產品敘述
WEO025664E 是一款採用 COG 結構的 3.55 吋繪圖型 OLED 顯示器，解析度為 256x64，內建 SSD1363 控制器 IC。模組尺寸為 99.2 × 33.5 × 2.01 mm，有效區域為 87.52 × 21.28 mm。此款 OLED 支援 4-bit（16 階）灰階顯示，提供 6800/8080 8-bit 並列介面、4-wire SPI 及 I2C 介面。其中，I2C 介面可供需要減少介面訊號線數量的主控系統選用。
與 WEO025664D 相比，WEO025664D 採用 SSD1322 控制器 IC，支援 6800/8080 並列介面及 SPI 介面，但不支援 I2C；WEO025664E 則採用 SSD1363 控制器 IC，並增加 I2C 介面選項。兩款產品具有相同的 256x64 解析度、模組尺寸及有效區域，客戶可依主控系統的介面需求評估適合的型號。
WEO025664E 採用 1/64 Duty 驅動方式，顯示驅動電壓（VCC）典型值為 16V。在 VCC = 16V、50% 棋盤格顯示圖案（Checkerboard Pattern）的測試條件下，典型電流消耗為 30mA。設計電源供應及顯示介面電路時，應將上述電氣特性納入考量。
WEO025664E 適用於醫療設備、工業控制面板、自助結帳系統、專業音訊設備、Hi-Fi 音響系統及音訊介面面板等需要小型繪圖型 OLED 顯示器與灰階顯示功能的應用。此外，也可評估用於 2U 伺服器前面板的本機監控介面，依前面板可用空間及所需顯示資訊進行選型。此模組的工作溫度範圍為 -40°C 至 +80°C，儲存溫度範圍為 -40°C 至 +85°C。
如需進一步了解 OLED 顯示器在 2U 伺服器前面板的應用與設計考量，可參考技術文章：PMOLED 在 2U 伺服器本機監控介面的應用與設計。
規格圖
產品規格
規格說明
| 項目 | 規格 | 單位 |
|---|---|---|
| 點陣 | 256 x 64 Dots | - |
| 模組尺寸 | 99.2 × 33.5 × 2.01 | mm |
| 有效區域 | 87.52 × 21.28 | mm |
| 像素大小 | 0.312 × 0.303 | mm |
| 像素間距 | 0.342 × 0.333 | mm |
| 顯示模式 | 被動矩陣 | |
| 顯示顏色 | 單色 | |
| 驅動方式 | 1/64 Duty | |
| 灰階 | 4 bits | |
| IC | SSD1363 | |
| 介面 | 6800,8080,4-Wire SPI,I2C | |
| 尺寸 | 3.55吋 | |
最大絕對額定值
| 參數 | 符號 | 最小值 | 最大值 | 單位 |
|---|---|---|---|---|
| 供電電壓 | VDD | -0.3 | 4.0 | V |
| 供電電壓 | VCC | -0.5 | 19.0 | V |
| 工作溫度 | TOP | -40 | 80 | °C |
| 儲存溫度 | TSTG | -40 | 85 | °C |
電氣特性
DC 電氣特性
| 項目 | 符號 | 條件 | 最小值 | 典型值 | 最大值 | 單位 |
|---|---|---|---|---|---|---|
| 低壓電源，輸入 / 輸出 Pin 電源 | VDD | － | 1.65 | 3.0 | 3.3 | V |
| 工作電壓 | VCC | － | 8.0 | 16.0 | 16.5 | V |
| 輸入高電壓 | VIH | － | 0.8×VDD | － | VDD | V |
| 輸入低電壓 | VIL | － | 0 | － | 0.2×VDD | V |
| 輸出高電壓 | VOH | － | 0.9×VDD | － | VDD | V |
| 輸出低電壓 | VOL | － | 0 | － | 0.1×VDD | V |
| 顯示器 50% 像素開啟 | ICC | VCC =16V | － | 30 | 45 | mA |
Pin功能定義
| Pin Number | 符號 | 功能說明 | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | ESD_GND | ESD Ground pin | |||||||||||||||
| 2 | VSS | Ground pin. It must be connected to external ground. | |||||||||||||||
| 3 | VCC | Power supply for panel driving voltage. This is also the most positive power voltage supply pin. A capacitor should be connected between this pin and VSS. |
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| 4 | VCOMH | COM signal deselected voltage level. A capacitor should be connected between this pin and VSS. |
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| 5 | VLSS | Analog system ground pin. It must be connected to external ground. | |||||||||||||||
| 6 | D7 | These pins are bi-directional data bus connecting to the MCU data bus. Unused pins are recommended to tie LOW. When serial interface mode is selected, D2, D1 should be tied together as the serial data input: SDIN, and D0 will be the serial clock input: SCLK. When I2C mode is selected, D2, D1 should be tied together and serve as SDAout, SDAin in application and D0 is the serial clock input, SCL. |
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| 7 | D6 | ||||||||||||||||
| 8 | D5 | ||||||||||||||||
| 9 | D4 | ||||||||||||||||
| 10 | D3 | ||||||||||||||||
| 11 | D2 | ||||||||||||||||
| 12 | D1 | ||||||||||||||||
| 13 | D0 | ||||||||||||||||
| 14 | E(RD#) | This pin is MCU interface input. When 6800 interface mode is selected, this pin will be used as the Enable (E) signal. Read/write operation is initiated when this pin is pulled HIGH and the chip is selected. When 8080 interface mode is selected, this pin receives the Read (RD#) signal. Read operation is initiated when this pin is pulled LOW and the chip is selected. When serial or I2C interface is selected, this pin must be connected to VSS. |
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| 15 | R/W# (WR#) | This pin is read / write control input pin connecting to the MCU interface. When 6800 interface mode is selected, this pin will be used as Read/Write (R/W#) selection input. Read mode will be carried out when this pin is pulled HIGH and write mode when LOW. When 8080 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 chip is selected. When serial or I2C interface is selected, this pin must be connected to VSS. |
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| 16 | BS1 | MCU bus interface selection pins. Select appropriate logic setting as described in the following table. BS2 and BS1 are pin select.
(1) 0 is connected to VSS (2) 1 is connected to VDD |
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| 17 | BS2 | ||||||||||||||||
18 |
D/C# | This pin is Data/Command control pin connecting to the MCU. When the pin is pulled HIGH, the data at D[7:0] will be interpreted as data. When the pin is pulled LOW, the data at D[7:0] will be transferred to a command register. In I2C mode, this pin acts as SA0 for slave address selection. |
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| 19 | CS# | This pin is the chip select input connecting to the MCU. The chip is enabled for MCU communication only when CS# is pulled LOW (active LOW). |
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| 20 | RES# | 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 | This pin outputs RAM write synchronization signal. Proper timing between MCU data writing and frame display timing can be achieved to prevent tearing effect. It should be kept NC if it is not used. |
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| 22 | IREF | This pin is the segment output current reference pin. IREF is supplied externally. A resistor should be connected between this pin and VSS to maintain the current around 10uA. It should be kept floating when internal IREF is chosen by command setting. |
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| 23~24 | NC | This is dummy pin. It should be kept NC. | |||||||||||||||
| 25 | VP | This pin is the segment pre-charge voltage reference pin. A capacitor can be connected between this pin and VSS to improve visual performance. It can also be float per application. No external power supply is allowed to connect to this pin. |
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| 26 | VDD | Power supply pin for core logic operation. A capacitor should be connected between this pin and VSS. | |||||||||||||||
| 27 | VSL | This is segment voltage (output low level) reference pin. This pin has to be connected with resistor and diode to ground (details depends on application). |
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| 28 | VLSS | Analog system ground pin. It must be connected to external ground. | |||||||||||||||
| 29 | VCC | Power supply for panel driving voltage. This is also the most positive power voltage supply pin. A capacitor should be connected between this pin and VSS. |
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| 30 | ESD_GND | ESD Ground pin |