STMPE801数据手册集成电路（IC）的I/O扩展器规格书PDF

描述 Description

The STMPE801 is a GPIO (General Purpose Input / Output) port expander able to interface a main digital ASIC via the two-line bidirectional bus (I2C); separate GPIO Expander IC is often used in Mobile-Multimedia platforms to solve the problems of the limited amounts of GPIOs usually available on the Digital Engine.
The STMPE801 offers great flexibility as each I/Os is configurable as input, output. This device has been designed very low quiescent current, and includes wake up feature for each I/O, to optimize the power consumption of the IC.

特性 Features

Up to 2 devices sharing the same bus (1 address line)
Wake up feature on each I/O
8 GPIO
I/O voltage 1.65V-3.6V
Operating voltage 1.65V - 3.6V
Reset input pin
<1μA suspend current
Interrupt output pin

简介

STMPE801属于集成电路（IC）的I/O扩展器。由制造生产的STMPE801I/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。