AT89S系列单片机ISP下载线设计

摘要

At present,the single-chip technology is widely used in ELV control field,and more an more technicians engaged in single-chip system development.However,the premise of single-chip system development is establishing the system development platform,including simulators,programmer,compiled software etc.The simulators and programmer are mostly higher prices on market,it raise the threshold for technicians enter the single-chip system development industry,it also improves the cost of enterprises engaged in the single-chip system development.Comprehensive above content,this paper proposes a design scheme for ISP download-line,it can replace special programmer.The download line according to the design scheme is bases on USB interface,can program online system to AT89S series single-chip.The working principle is fully discussed,and the realization method is detailed explained.The download-line bases on the paper with lower cost,performance stability,convenient use,etc.%目前,单片机技术广泛应用于弱电控制领域,从事单片机系统开发的技术人员也越来越多。然而,单片机系统开发的前提需要建立系统开发平台,包括仿真器、编程器、相关编译软件等。市场上的仿真器、编程器大多价格较高,这给技术人员进入单片机系统开发行业提高了门槛,同时也提高了从事单片机系统开发企业的研发成本。基于这种情况,文章提出了一种能取代传统编程器、仿真器的ISP下载线设计方案,根据该方案设计的下载线基于USB接口,能对AT89S系列单片机进行在线系统编程。文章对设计方案的工作原理进行了充分论述,对其实现的方法进行了详细说明。该下载线设计具有成本低、性能稳定、使用方便等特点。