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PCF8575 I2C IO扩展模块

£3.59
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19 Sold

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Description

PCF8575 模块是一款使用 I2C 接口增加可用 I/O 引脚的扩展板,可提供 16 位准双向输入/输出引脚。它非常适合 Arduino 和基于微控制器的项目。

主要特征:

  1. I2C 接口:轻松与微控制器集成。
  2. 3.3V电平转换器:支持3.3V并可配置为VCC。
  3. 工作电压:2.5V 至 5.5V 直流。
  4. 工作电流:最大100mA。
  5. 可配置 I2C 地址:默认0x20,可通过A1和A2焊盘调整。
  6. 16 个可寻址引脚:可独立配置为输入或输出。
  7. 中断输出:用于输入变化检测的开漏中断引脚。
  8. 多种应用:非常适合控制继电器、蜂鸣器、按钮、LED 等。

应用:

非常适合扩展项目中的 I/O 功能,增强 Arduino UNO R3 等微控制器的功能。

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