【通信应用笔记】一个硬件和软件指南的STMPE801只提供8位端口扩展

【通信应用笔记】一个硬件和软件指南的STMPE801只提供8位端口扩展
AN3299
Application note
A hardware and software guide for the STMPE801
8-bit port expander Xpander Logic

Introduction
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). It offers flexibility as each I/O is
configurable as input, output. This device has been designed with very low quiescent
current, and includes a wake up feature for each I/O, to optimize the power consumption of
the IC.
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