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论文作者:www.51lunwen.org论文属性:短文 essay登出时间:2013-10-29编辑:yangcheng点击率:6298
论文字数:1622论文编号:org201310271006246988语种:英语 English地区:中国价格:免费论文
摘要:在单片机中,嘴是数据输入缓冲器,数据输出驱动器和闩锁在一个I / O电路和许多其他功能的集合。 MCS-51的四端口结构的电路基本上是相同的,但它们也有不同的特点,所以目标口之间的差异的功能和使用。在学习掌握每个端口必须使用。
美国ATMEI MCS-51是由低电压,高性能8位微控制器,可电反复擦除FLASH程序存储器,2k字节和128字节的随机存取数据存储器RAM。设备使用ATMEI的公司的高密度,非易失性存储器技术生产,与标准MCS-51指令集和引脚兼容的产品,但除了端口P0,P2,啤酒,,,针,它是不平行扩展非总线微控制器的总线。
American ATMEI MCS-51 is produced by low-voltage, high-performance 8-bit microcontroller with 2k bytes that can be electrically erased repeatedly FLASH program memory , and 128 bytes of random access data memory RAM. Device uses ATMEI company high-density, non-volatile memory technology production, with the standard MCS-51 instruction set and pin-compatible products , but in addition to port P0 , P2, and ALE,,, pin , it is not parallel expansion bus for non- bus microcontrollers.
单片机是由运算器,控制器,存储器,输入设备和输出设备总共有五个基本要素组成。芯片是包括一个计算装置,一个控制器,一个小的内存量,基本输入输出接口电路,串行接口电路,中断和定时器电路都集成在一个芯片上有限大小的。
SCM is determined by the operator, controller , memory , input devices , and output devices of a total of five basic components . Chip is to include a computing device , a controller , a small amount of memory , the basic input-output interface circuit , a serial interface circuit , interrupt and timer circuits are all integrated in a chip of limited size .
MCS-51单片机通过内部的逻辑结构,以掌握的逻辑结构和单片机内部的各个组成部分的功能和特性。即:中央处理器(CPU),内部数据存储器,内部程序存储器,定时器/计数器,并行I / O端口,串行端口,中断控制系统,时钟电路,位处理器,总线。
MCS-51 microcontroller via the internal logical structure to grasp the logical structure and the internal microcontroller functions and features of the various components . Namely: the central processor (CPU), the internal data memory, internal program memory, timer / counter , parallel I / O ports, serial ports, interrupt control systems, the clock circuit , bit processor, bus.Second, the high internal data memory unit 128 , which is provided for the special register , the address range is 80H ~ FFH. The so-called special purpose register is different from the general-purpose registers , namely, the function or purpose of these registers are special provisions have been made for storage of the corresponding components of the control microcontroller commands, status , or data. In these special register , the focus to master the use of the following registers : the program counter , the accumulator A, B registers, program status word (PSW), the data pointer (DPTR).