由于正式产品中的单片机芯片都加密了，直接使用编程器是不能读出程序的。但有时候由于一些原因，需要得到单片机内部的程序，用来参考研究学习、找到丢失的资料或复制一些芯片，这就需要做单片机解密了。单片机解密就是通过一定的设备和方法，直接得到加密了的单片机中的烧写文件，可以自己复制烧写芯片或反汇编后自己参考研究。
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AT87F52 Description
The AT87F52 is a low-power, high-performance CMOS 8-bit microcomputer with 8Kbytes of QuickFlash programm able read only memory. 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 Quick-Flash allows the program memory to be user programmed by a conventional nonvolatile memory programmer. By combining a versatile 8-bit CPU with QuickFlash on a monolithic chip, the Atmel AT87F52 is a powerful microcomputer which provides a highly flexible and cost effective solution to many embedded control applications.
AT87F52 Features
Compatible with MCS-51? Products
8K Bytes of User Programmable QuickFlash? Memory
Fully Static Operation: 0 Hz to 24 MHz
Three-Level Program Memory Lock
256 x 8-Bit Internal RAM
32 Programmable I/O Lines
Three 16-Bit Timer/Counters
Eight Interrupt Sources
Programmable Serial Channel
Low Power Idle and Power Down Modes
