在其产品设计中，经常会使用STM32片上Flash模拟一个EEPROM的功能，用于存贮数据。在软件调试时，发现开启此功能，会影响到USART通信，导致偶尔发生个别数据接收不到的现象。本文档详细介绍原因和解决方法。-vIn its product design, often using the STM32 chip Flash EEPROM simulates a function for storing data. When software debugging and found that this feature is turned on, it will affect the USART communication, leading to the phenomenon of individual data not receive occasionally occur. This document details the causes and solutions.