本文介绍了一种基于 USB接口芯片 SL811HS的单片机实现读写 U盘的系统。该系统解决了多数数据采

集设备、工控机及嵌入式系统由于没有安装 USB标准接口 ,不能读写 U盘的问题 ,重点分析系统的原理及传输协议 ,

给出了硬件、软件的实现方法。用 SL811HS实现单片机读写 U盘的方法简单 ,成本较低 ,在嵌入式控制系统中有着较

大的推广应用价值。-This paper introduces a USB interface chip based on a single chip SL811HS U disk system to read and write. The system solves most of the data acquisition equipment, industrial computer and embedded systems are not installed as standard USB interface, can not read U disk problem, the principle focus of the system and transmission protocol, gives the hardware and software implementation methods. MCU with SL811HS U disk read and write simple, low cost, embedded control system has a great application value.