【通信应用笔记】STMPE812A：硬件和软件指南

【通信应用笔记】STMPE812A：硬件和软件指南
AN3301
Application note

S-Touch STMPE812A: a hardware and software guide

Introduction
The STMPE812A is a 4-wire resistive touchscreen controller with an integrated 4-bit port
expander. The touchscreen controller is designed to be fully autonomous, requiring only
minimal CPU intervention for sampling, filtering and preprocessing operations.
The purpose of this document is to highlight the guidelines and information complementary
to the datasheet that is necessary for a proper operation of the STMPE812A device in
applications.
The first part o