无USB控制芯片的AVRUSB编程器的实现  

The Implement of AVR USB Programmer without USB Controller

作　　者：杨柳[1] 李常青[1] 张志[1] 

机构地区：[1]郑州大学信息工程学院,450054

出　　处：《微计算机信息》2009年第14期294-295,共2页Control & Automation

基　　金：项目名称:含硅纳米晶的掺铒光放大器增益特性的研究;颁发部门:国家自然科学基金委(60678045)

摘　　要：USB接口因其便利和快速等诸多优点越来越受到人们的青睐,与以往的并口和串口编程器相比,USB接口编程器有无需外接电源,下载速度快的优点,因而使用也日益广泛。而USB控制芯片的价格导致USB接口编程器高于其他接口编程器,本设计利用AVR单片机的大部分指令为单周期的具有高速传输的特点,通过单片机的IO口直接连至USB总线,实现了USB规范所规定的低速设备的功能,从而无需外接USB控制芯片,减小了硬件开发成本。USB port, with its convenience,fast speed and other good features, is （deeply）favored by more and more people. Compared to the previous serial and parallel port programmers, USB interface programmer doesn＇t need external power supplies, and download quickly ,so it is widely used. But the price of USB port programmer is higher than other programmers for its controller chip. This design uses the AVR single chip, whose most instructions are single cycle, and high-speed transmission, connecting the USB bus by the 10 port of single chip, achieving the function of low-speed peripherals normed by USB specification. Therefore lower the development costs without external USB controller chips connection.

关 键 词：AVR单片机 USB低速设备 在系统编程 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]