在系统可编程下载器设计与实现  

Design and Implementation for an ISP Downloading Unit

作　　者：刘蔚[1] 张维戈[1] 

机构地区：[1]北京交通大学电气学院,北京100044

出　　处：《微处理机》2010年第6期111-113,共3页Microprocessors

摘　　要：为解决工程生产中程序下载更新问题,研发了基于MC9S12系列单片机的程序下载装置。提出软硬件开发方案,设计下载器实物,并结合单片机内部机理与Flash编程机制,编写内嵌式监控程序。在其引导作用下,通过EEPROM中介,RS232或CAN通信手段,对普通模式及保护模式下的FLASH实现在系统编程,完成点对点或点对多点的程序下载更新与调试任务。In order to solve problems of program downloading or upgrading,the paper provides both hardware and software plans for procedure download system.Combining MC9S12 series MCU＇s principles with its FLASH theories,especially In System Programming with Flash in average pattern or protection pattern,the author not only completes the programming of monitor routine,but also implements the design of procedure downloads system using EEPROM as resonance,RS232 or CAN as communication,and ISP as method.It can download procedures in styles of one for one or one for more.

关 键 词：MC9S12系列单片机 监控程序 BDM背景调试模式 ISP在系统编程 

分 类 号：TP368.2[自动化与计算机技术—计算机系统结构]