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产品叙述
WEO128128D-CTP 是一款直径为1.18英寸的圆形OLED 显示屏，具有模块上的电容触摸屏，分辨率为 128x128 点。该模块内置了 SSD1327 IC，支持 4 线 SPI 和 I2C 接口，逻辑供电电压为 3V（典型值），1/128 驱动占空比。WEO128128D-CTP 型号内置了 FT3268 触摸屏 IC，支持 I2C 接口，并针对电容触摸屏提供一个探测点。
这款圆形 OLED WEO128128D 带有 CTP 型号非常适用于智能家居应用、智能技术设备、能源系统、通信系统、医疗仪器等。该 OLED 模块具有高达 10,000:1 的高对比度和多达 160° 的非常宽广的视角，可呈现更清晰的显示图像。该模块可在 -20℃ 至 +70℃ 的温度范围内运行，其储存温度范围为 -30℃ 至 +70℃。
规格图
产品规格
规格说明
| 项目 | 尺寸 | 单位 |
|---|---|---|
| 点阵(分辨率) | 128 x 128 | Dots |
| 模块尺寸 | Ø50.5 × 5.0 | mm |
| 检视区域 | Ø30.0 | mm |
| 点大小 | 0.210 × 0.210 | mm |
| 点间距 | 0.235 × 0.235 | mm |
| 显示模式 | 被动矩阵 | |
| 发光颜色 | 单色 | |
| 驱动方式 | 1/128 Duty | |
| 灰阶 | 4 bits | |
| IC | SSD1327 | |
| 接口 | 4线SPI , I2C | |
| 尺寸 | 1.18吋 | |
| CTP IC | FT3268 |
| 检测点(触控点) | 1 |
| CTP 接口 | I2C |
最大绝对额定值
| 参数 | 符号 | 最小值 | 最大值 | 单位 |
|---|---|---|---|---|
| 工作电源电压 | VCI | -0.3 | 3.6 | V |
| 逻辑电源电压 | VDD | -0.5 | 2.75 | V |
| 显示电源电压 | VCC | -0.5 | 19.0 | V |
| 工作温度 | TOP | -20 | +70 | °C |
| 储存温度 | TSTG | -30 | +70 | °C |
电气特性
DC 电气特性
| 项目 | 符号 | 条件 | 最小值 | 典型值 | 最大值 | 单位 |
|---|---|---|---|---|---|---|
| 工作电源电压 | VCI | － | 2.8 | 3.0 | 3.3 | V |
| 显示电源电压 | VCC | － | 8.0 | 14.5 | 15.0 | V |
| 逻辑电源电压 | VDD | － | 1.65 | － | 2.6 | V |
| 输入高准位 | VIH | － | 0.8×VCI | － | VCI | V |
| 输入低准位 | VIL | － | 0 | － | 0.2×VCI | V |
| 输出高准位 | VOH | Iout = 100uA | 0.9×VCI | － | VCI | V |
| 输出低准位 | VOL | Iout = 100uA | 0 | － | 0.1×VCI | V |
| 50%显示画面耗电流 | VCC =14.5V | － | 15 | 30 | mA | |
触控面板控制器 FT3268
| 项目 | 符号 | 条件 | 最小值 | 典型值 | 最大值 | 单位 |
|---|---|---|---|---|---|---|
| 输入高准位 | VIH | － | 0.7×VDD | － | VDD | V |
| 输入低准位 | VIL | － | -0.3 | － | 0.3×VDD | V |
| 输出高准位 | VOH | IOH = 0.1mA | 0.7×VDD | － | － | V |
| 输出低准位 | VOL | IOL = 0.1mA | － | － | 0.3×VDD | V |
Pin功能定义
| No. | 符号 | 功能说明 | ||||||
|---|---|---|---|---|---|---|---|---|
| 1 | VSS | Ground pin. It must be connected to external ground. | ||||||
| 2 | VCC | Power supply for panel driving voltage. This is also the most positive power voltage supply pin. It is supplied by external high voltage source. | ||||||
| 3 | VCOMH | COM signal deselected voltage level. A capacitor should be connected between this pin and VSS. No external power supply is allowed to connect to this pin. |
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| 4 | VCI | Low voltage power supply and power supply for interface logic level. It should match with the MCU interface voltage level and must be connected to external source. VCI must always set to be equivalent to or higher than VDD. |
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| 5 | VDD | Power supply pin for core logic operation. VDD can be supplied externally (within the range of 2.4V to 2.6V) or regulated Internally from VCI. A capacitor should be connected between VDD and VSS under all circumstances. |
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| 6 | BS1 | MCU bus interface selection pins. Select appropriate logic setting as described in the following table. BS1 is pin select. Bus Interface selection
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| 7 | IREF | This pin is the segment output current reference pin | ||||||
| 8 | 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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| 9 | 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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| 10 | DC# | This pin is Data/Command control pin connecting to the MCU. When the pin is pulled HIGH, will be interpreted as data. When the pin is pulled LOW, will be transferred to a command register In I2C mode, this pin acts as SA0 for slave address selection. |
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| 11 | D0 | When serial interface mode is selected, D0 will be the serial clock input: SCLK; D1 will be the serial data input: SDIN and D2 should be kept NC. 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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| 12 | D1 | |||||||
| 13 | D2 | |||||||
| 14 | TP_SCK | I2C clock signal | ||||||
| 15 | TP_SDA | I2C data signal | ||||||
| 16 | TP_INT | Interrupt signal | ||||||
| 17 | VCC | Power supply for panel driving voltage. This is also the most positive power voltage supply pin. | ||||||
| 18 | VSS | Ground |