单片机应用系统中的看门狗技术  

Watch-dog technologies in single-chip microcomputer application systems

作　　者：胡屏[1] 柏军[2] 

机构地区：[1]哈尔滨工业大学威海分校信息与控制工程系,山东威海264209 [2]哈尔滨工业大学威海分校计算机科学与工程系,山东威海264209

出　　处：《吉林大学学报（信息科学版）》2003年第2期205-208,共4页Journal of Jilin University（Information Science Edition）

摘　　要：分析研究了单片机应用系统中软件看门狗、单/双时限和强制复位看门狗等几种常见的看门狗技术及具体的实现方法,从提高看门狗工作可靠性的角度,分析了各种看门狗方案的优缺点,给出了基本的硬件电路和软件控制策略,指出了在设计和应用过程中需注意的一些问题。Several Watch-Dog Technologies(WDT), such as Software WDT,Si ngle/Double period and Forced reset WDT, in single-chip microcomputer application systems and their implementation methods are introduced. Basic hardwar e circuits, software control methods are proposed, and corresponding merits are respectively analyzed. To improve the reliability of watch-dogs, it is pointe d out that some precautions are needed during design and application.

关 键 词：单片机 看门狗 抗干扰 X5045看门狗定时器 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]