说明：  AT89C51中文资料.pdf AT89C51是一种带4K字节闪烁可编程可擦除只读存储器（FPEROM—Flash Programmable and Erasable Read Only Memory）的低电压，高性能CMOS 8位微处理器，俗称单片机。AT89C2051是一种带2K字节闪烁可编程可擦除只读存储器的单片机。单片机的可擦除只读存储器可以反复擦除100次。该器件采用ATMEL高密度非易失存储器制造技术制造，与工业标准的MCS-51指令集和输出管脚相兼容。由于将多功能8位CPU和闪烁存储器组合在单个芯片中，ATMEL的AT89C51是一种高效微控制器，AT89C2051是它的一种精简版本。AT89C单片机为很多嵌入式控制系统提供了一种灵活性高且价廉的方案。
(AT89C51 Chinese data. Pdf AT89C51 is a kind of 4K bytes of flash erasable programmable read-only memory (FPEROM-Flash Programmable and Erasable Read Only Memory) of the low-voltage, high-performance CMOS 8-bit microprocessors, commonly known as microcontrollers. AT89C2051 is a kind of 2K bytes of flash erasable programmable read only memory of the microcontroller. MCU EEPROM erasure can be repeated 100 times. The device uses high-density non-volatile memory ATMEL manufacturing technology manufacturing, and industry-standard MCS-51 instruction set and output pins are compatible. Owing to the multi-function 8-bit CPU and flash memory combined in a single chip, ATMEL The AT89C51 is a highly efficient micro-controller, AT89C2051 is a streamlined version of it. AT89C SCM for many embedded control system provides a high degree of flexibility and inexpensive solution.)