MCP23018中文资料Serial Peripherals数据手册Microchip规格书

描述 Description

MCP23018 is a 16-bit I/O expander for high speed I2C™Compatible interface. MCP23018 is available in the following packages: 28-pin PDIP (300 mil,)28-pin SOIC (300 mil), 24-pin SSOP, 24-pin QFN (4x4)

特性 Features

•16-bit remote bidirectional I/O port
•Open-drain outputs:
•5.5V tolerant
•25 mA sink
•400 mA total current out
•Low standby current as low as 1 µA
•High-speed I2C™ interface upto 3.4MHz
•Single hardware address pin: Voltage input to allow up to eight devices on the bus
•Configurable interrupt output pins: Configurable as active-high, active-low or open-drain
•Low standby current:1 µA (typ.)

简介

MCP23018属于集成电路（IC）的I/O扩展器。由制造生产的MCP23018I/O 扩展器该系列器件可与微控制器、微处理器或类似器件结合使用，目的是增加可用于连接外设的信号连接数量。典型的工作概念涉及使用串行通信，只需主机设备上的几根 I/O 线，即可读/写扩展器设备上的许多输入/输出引脚的状态。该技术的通信速度不佳，但连通性较高，最适合快速响应不是很关键的应用，例如许多人机界面应用。