资料介绍
For some classes of applications, it may be desirable to know if the application of the reset signal to a microcontroller is due to an initial power-on sequence, or is the result of an external signal such as an operator pressing a reset pushbutton, or the result of a watchdog timer or similar event.
While there are perhaps numerous hardware solutions that can be employed, a simple
software solution can offer a high degree ofconfidence in making this determination. The task is to determine the differences in state of resources internal to the microcontroller that would occur as a result of these two types of reset conditions. With respect to the 80C51 family of microcontrollers, on-chip resources consist of the special function registers (SFRs) and the internal data memory (RAM). Most of the SFR locations are initialized as a result of a reset condition and thus cannot be used for this determination. The data memory contents are unaffected by reset. Thus, valid data loaded into the RAM of the 80C51 while
executing a program would not be affected by the application of an external reset signal provided the power source for the microcontroller has not been removed (as is the case for a “warm boot”).
While there are perhaps numerous hardware solutions that can be employed, a simple
software solution can offer a high degree ofconfidence in making this determination. The task is to determine the differences in state of resources internal to the microcontroller that would occur as a result of these two types of reset conditions. With respect to the 80C51 family of microcontrollers, on-chip resources consist of the special function registers (SFRs) and the internal data memory (RAM). Most of the SFR locations are initialized as a result of a reset condition and thus cannot be used for this determination. The data memory contents are unaffected by reset. Thus, valid data loaded into the RAM of the 80C51 while
executing a program would not be affected by the application of an external reset signal provided the power source for the microcontroller has not been removed (as is the case for a “warm boot”).
下载该资料的人也在下载
下载该资料的人还在阅读
更多 >
- 新唐8051系列Keil驱动程序 5次下载
- 笙泉科技8051系列U1编程器上位机配套硬件 5次下载
- STM32冷启动下载 8次下载
- PIN管控制电路功率容量的确定.顾颖言 12次下载
- GPS接收机码间偏差DCB的确定 17次下载
- 宽带变容管调谐压控振荡器调频带宽的确定 7次下载
- 西门子PLC_CPU的冷启动、暖启动、热启动的区别 10次下载
- 基于计数器按钮控制的电机程序启动与停止 16次下载
- 8051系列单片机C程序设计完全手册PDF电子书免费下载 246次下载
- DOS的冷启动和热启动有什么区别和方法说明 0次下载
- 模糊控制中隶属度函数的确定方法_王季方 1次下载
- 永磁同步电机转子磁极位置的确定与计算 16次下载
- 高强度气体放电灯的热启动电路 25次下载
- 换路定律及初始值的确定 30次下载
- 力法基本原理、超静定次数的确定 22次下载
- i.MXRTxxx系列与i.MXRT11xx系列双程序启动细节差异 1367次阅读
- 软PLC冷启、暖启、热启动 1113次阅读
- PLC的启动方式在什么模块上进行设置? 1744次阅读
- Windows 10中启动全屏应用程序的方法 7689次阅读
- 一文了解window电脑控制面板的快速启动 8.3w次阅读
- 8051系列单片机的原理和结构介绍 1.1w次阅读
- 英创信息技术WinCE下自动启动多个应用程序介绍 1452次阅读
- 如何定义8051系列单片机的机器周期 1908次阅读
- 什么是区块链的确定性? 1036次阅读
- FANUC机器人宏程序自动运行的方法及启动宏程序的步骤教程 4.4w次阅读
- 基于SOPC的M8051调试器设计及系统测试 2358次阅读
- STC12系列单片机冷启动、热启动 1w次阅读
- c8051f单片机ad采样程序(附详细注释) 2.7w次阅读
- 程序的十大基础实用算法及其讲解 1w次阅读
- Xilinx FPGA 嵌入式系统程序引导和启动的流程 1987次阅读
下载排行
本周
- 1电子电路原理第七版PDF电子教材免费下载
- 0.00 MB | 1491次下载 | 免费
- 2单片机典型实例介绍
- 18.19 MB | 95次下载 | 1 积分
- 3S7-200PLC编程实例详细资料
- 1.17 MB | 27次下载 | 1 积分
- 4笔记本电脑主板的元件识别和讲解说明
- 4.28 MB | 18次下载 | 4 积分
- 5开关电源原理及各功能电路详解
- 0.38 MB | 11次下载 | 免费
- 6100W短波放大电路图
- 0.05 MB | 4次下载 | 3 积分
- 7基于单片机和 SG3525的程控开关电源设计
- 0.23 MB | 4次下载 | 免费
- 8基于AT89C2051/4051单片机编程器的实验
- 0.11 MB | 4次下载 | 免费
本月
- 1OrCAD10.5下载OrCAD10.5中文版软件
- 0.00 MB | 234313次下载 | 免费
- 2PADS 9.0 2009最新版 -下载
- 0.00 MB | 66304次下载 | 免费
- 3protel99下载protel99软件下载(中文版)
- 0.00 MB | 51209次下载 | 免费
- 4LabView 8.0 专业版下载 (3CD完整版)
- 0.00 MB | 51043次下载 | 免费
- 5555集成电路应用800例(新编版)
- 0.00 MB | 33562次下载 | 免费
- 6接口电路图大全
- 未知 | 30320次下载 | 免费
- 7Multisim 10下载Multisim 10 中文版
- 0.00 MB | 28588次下载 | 免费
- 8开关电源设计实例指南
- 未知 | 21539次下载 | 免费
总榜
- 1matlab软件下载入口
- 未知 | 935053次下载 | 免费
- 2protel99se软件下载(可英文版转中文版)
- 78.1 MB | 537793次下载 | 免费
- 3MATLAB 7.1 下载 (含软件介绍)
- 未知 | 420026次下载 | 免费
- 4OrCAD10.5下载OrCAD10.5中文版软件
- 0.00 MB | 234313次下载 | 免费
- 5Altium DXP2002下载入口
- 未知 | 233046次下载 | 免费
- 6电路仿真软件multisim 10.0免费下载
- 340992 | 191183次下载 | 免费
- 7十天学会AVR单片机与C语言视频教程 下载
- 158M | 183277次下载 | 免费
- 8proe5.0野火版下载(中文版免费下载)
- 未知 | 138039次下载 | 免费
评论
查看更多