AT87C51RC2单片机解密

单片机解密通常有软解密技术手法和硬解密手法两种，所谓软解密手法，就是通过软件找出单片机的设计缺陷，将内部OTP/falsh ROM 或eeprom代码读出，但这种芯片解密方法并不是最理想的，因为他的研究时间太长。同一系列的单片机都不是颗颗一样。

硬解密手法也被称为侵入式攻击技术，它一般需要对母片进行开片，通过运用紫外光技术以及高倍显微镜寻找保护熔丝和加密位。运用何种解密方法并不是固定的，针对不同的芯片类型和不同客户的具体要求，解密公司一般都会选择解密成功率最高，最可靠的解密方法进行芯片解密，

AT87C51RC2解密需求者请与世纪芯科技联系咨询更多解密技术实现及项目合作详情：

　　AT87C51RC2 概述

　　Atmel TS8xC51Rx2 is a high performance CMOS ROM, OTP, EPROM and ROMless versions of the 80C51 CMOS single chip 8-bit microcontroller.

　　The TS8xC51Rx2 retains all features of the 80C51 with extended ROM/EPROM capacity (16/32/64 Kbytes), 256 bytes of internal RAM, a 7-source , 4-level interrupt system, an on-chip oscilator and three timer/counters.

　　In addition, the TS80C51Rx2 has a Programmable Counter Array, an XRAM of 256 or 768 bytes, a Hardware Watchdog Timer, a more versatile serial channel that facilitates multiprocessor communication (EUART) and an X2 speed improvement mechanism.

　　The fully static design of the TS80C51Rx2 allows to reduce system power consumption by bringing the clock frequency down to any value, even DC, without loss of data.

　　The TS80C51Rx2 has 2 software-selectable modes of reduced activity for further reduction in power consumption. In the idle mode the CPU is frozen while the timers, the serial port and the interrupt system are still operating. In the power-down mode the RAM is saved and all other functions are inoperative.

　　AT87C51RC2 特性

　　80C52 Compatible

　　– 8051 pin and instruction compatible

　　– Four 8-bit I/O ports

　　– Three 16-bit timer/counters

　　– 256 bytes scratchpad RAM

　　High-Speed Architecture

　　– 40 MHz @ 5V, 30MHz @ 3V

　　– X2 Speed Improvement capability (6 clocks/machine cycle)

　　– 30 MHz @ 5V, 20 MHz @ 3V (Equivalent to

　　– 60 MHz @ 5V, 40 MHz @ 3V)

　　Dual Data Pointer

　　On-chip ROM/EPROM (16K-bytes, 32K-bytes, 64K-bytes)

　　On-chip eXpanded RAM (XRAM) (256 or 768 bytes)

　　Programmable Clock Out and Up/Down Timer/Counter 2

　　Programmable Counter Array with

　　– High Speed Output,

　　– Compare / Capture,

　　– Pulse Width Modulator,

　　– Watchdog Timer Capabilities

　　Hardware Watchdog Timer (One-time enabled with Reset-Out)

　　2 extra 8-bit I/O ports available on RD2 with high pin count packages

　　Asynchronous port reset

　　Interrupt Structure with

　　– 7 Interrupt sources,

　　– 4 level priority interrupt system

　　Full duplex Enhanced UART

　　– Framing error detection

　　– Automatic address recognition

　　Low EMI (inhibit ALE)

　　Power Control modes

　　– Idle mode

　　– Power-down mode

　　– Power-off Flag

　　Once mode (On-chip Emulation)

　　Power supply: 4.5-5V, 2.7-5.5V

　　Temperature ranges: Commercial (0 to 70oC) and Industrial (-40 to 85oC)

　　Packages: PDIL40, PLCC44, VQFP44 1.4, PLCC68, VQFP64 1.4