具有2K字节Flash存储器的8位微控制器(单片机) AT89C2051

中文字数: 6430,中文页数: 12  英文字数:  3954 ,字符数:19954,页数:14

具有2K字节Flash存储器的8位微控制器(单片机) AT89C2051
功能特性：
与MCS-51产品指令系统相兼容
2K字节可重擦写闪速存储器
1000次擦写周期
工作电压2.7V到6V
全静态操作：0 Hz到24 MHz
两级加密程序存贮器
128×8位片内RAM
15个可编程I/O口
2个16位定时/计数器
6个中断源
可编程UART串行通道
可直接驱动LED输出端口
内置一个模拟比较器
低功耗空闲模式和掉电模式
功能特性描述：AT89C2051是美国ATMEL公司生产的低电压，高性能CMOS 8位单片机，片内含2k字节的可反复擦写的只读程序存储器(PEROM)和128字节的随机存取数据存储器(RAM)，器件采用ATMEL公司的高密度非易失性存储技术制造，兼容标准MCS-51指令系统，片内置通用8位CPU和Flash存储单元，功能强大的AT89C51单片机可为您提供许多高性价比的应用场合[14]。
AT89C2051提供以下标准功能：2K字节闪速存储器，128字节内部RAM，15个可编程I/O口，2个16位定时/计数器，一个5向量2级中断结构，一个全双工的串行通信端口，内置一个精确的模拟比较器，片内振荡器和时钟电路。同时，AT89C2051降至0Hz的静态逻辑操作，并支持两种软件选择的节电运行模式。在空闲模式下，CPU停止工作，但允许RAM， 定时器/计数器，串行通信端口和中断系统继续工作。在掉电模式下保存RAM中的数据，但振荡器停止工作并禁止其它所有部件工作直至外中断激活或硬件复位。

8-bit Microcontroller with 2K Bytes Flash AT89C2051
Features:
Compatible with MCS-51  Products
2K Bytes of Reprogrammable Flash Memory–Endurance: 1000 Write/Erase Cycles
2.7V to 6V Operating Range
Fully Static Operation: 0 Hz to 24 MHz
Two-level Program Memory Lock
128 x 8-bit Internal RAM
15 Programmable I/O Lines
Two 16-bit Timer/Counters
Six Interrupt Sources
Programmable Serial UART Channel
Direct LED Drive Outputs
On-chip Analog Comparator
Low-power Idle and Power-down Modes
Description: The AT89C2051 is a low-voltage, high-performance CMOS 8-bit microcomputer with 2K 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 MCS-51 instruction set. By combining a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89C2051 is a powerful microcomputer which provides a highly-flexible and cost-effective solution to many embedded control applications.
The AT89C2051 provides the following standard features:2K bytes of Flash,128 bytes of RAM,15 I/O lines, two 16-bit timer/counters,a five vector two-level interrupt architecture, a full duplex serial port, a precision analog comparator, on-chip oscillator and clock circuitry. In addition, the AT89C2051 is designed with static logic for operation down to zero frequency and supports two software selectable power saving modes.The Idle Mode stops the CPU while allowing the RAM, timer/counters, serial port and interrupt system to continue functioning. The power-down mode saves the RAM contents but freezes the oscillator disabling all other chip functions until the next hardware reset.

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