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单片微机在温室控制中的应用论文的外文翻译.doc

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单片微机在温室控制中的应用论文的外文翻译,1. descriptionthe at89c52 is a low-power, high-performance cmos 8-bit microcomputer with 8k bytes of flash programmable and erasable read only memory(perom). the device is manufactured using atmel's high density nonvolatile memory technology and is compatible with the industry standard 80c51 and ..
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内容介绍
1. Description
The AT89C52 is a low-power, high-performance CMOS 8-bit microcomputer with 8K bytes of Flash programmable and erasable read only memory(PEROM). The device is manufactured using Atmel's high density nonvolatile memory technology and is compatible with the industry standard 80C51 and 80C52 instruction set and pinout. The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer. By combining a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89C52 is a powerful microcomputer which provides a highly flexible and cost effective solution to many embedded control applications.
2.Features
• Compatible with MCS-51 TM Products
AT89C52是美国ATMEL公司生产的低电压高性能的COMS8位单片机,内含8K字节可反复擦写的只读程序存储器PEROM)和256字节的随机存储数据存储器(RAM),器件采用ATMEL公司高密度,非易失性存储技术生产,与标准MCS-51指令系统和8052产品引脚兼容.片内内置8 位中央处理器(CPU)和FLASH 存储单元,
功能强大的AT89C52单片机适合许多较为复杂的控制场所.
1. 主要性能参数:
+ 与MCS-51系列产品兼容
+ 8KB 字节可重擦写FLASH闪存存储器
+1000 次写/擦除周期
+全静态操作:0,12,24M赫兹
+三级加聾@绦虼娲⑵鳇br>+256*8 字节内部RAM
+ 32个可编程I/O口线
+ 3个16位计数1定时器
+ 8个中断源
+ 可编程串行UART 通道
+低工耗空闲和掉电模式
2. 功能特征概述
AT89C52 提供以下标准功能:8KB字节FLASH闪存存储器,256*8字节内部RAM,32个I/O口线,3个16位计数/定时器,一个6向量两级中断结构,一个全双工串行通信口,片内震荡器和时钟电路.同时AT89C52 可以降到OHZ静态逻辑操作,并支持两种软件可选的节电模式.空闲方式停止CPU工作,但允许RAM,定时/计数器,传行通信口及中断系统继续工作.掉电方式保存RAM 中的内容,但震荡器停止工作并禁止其它部件工作到下一个硬件复位
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