在这里，我们邦凯科技提供对AT89C51RC2芯片的功能特征基本介绍，供客户及解密工程师参考借鉴。因为在IC芯片解密 、单片机解密过程中，只有充分了解芯片内部结构及其加解密特征，解密工程师才能选择最合适的解密方案，确 保解密的成功率和可靠性。而对于客户来说，对芯片本身进行技术理解，能够帮助其更好的理解芯片解密的难易 程度，对解密报价进行参考借鉴，更好的对自己的解密项目进行把握。

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　　以下是AT89C51RC2单片机的功能特征概述，关于AT89C51RC2解密合作更多详情与解密报价，请直接与我们联系：
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　　The AT89C51RC2 is a high-performance Flash version of the 80C51 8-bit micro-controllers. It contains a 16K or 32K Bytes Flash memory block for program and data.
　　The Flash memory can be programmed either in parallel mode or in serial mode with the ISP capability or with software. The programming voltage is internally generated from the standard VCC pin.
　　The AT89C51RC2 retains all features of the 80C52 with 256 Bytes of internal RAM, a 9-source 4-level interrupt controller and three timer/counters. In addition, the AT89C51RC2 has a Programmable Counter Array, an XRAM of 1024 Bytes, a Hardware Watchdog Timer, a Keyboard Interface, an SPI Interface, a more versatile serial channel that facilitates multiprocessor communication (EUART) and a speed improvement mechanism (X2 mode). The Pinout is the standard 40/44 pins of the C52.
　　The fully static design reduces system power consumption of the AT89C51RC2 by allowing it to bring the clock frequency down to any value, even DC, without loss of data. The AT89C51RB2 has 2 software-selectable modes of reduced activity and 8-bit clock prescaler for further reduction in power consumption. In Idle mode, the CPU is frozen while the peripherals and the interrupt system are still operating. In power-down mode, the RAM is saved and all other functions are inoperative. The added features of the AT89C51RC2 make it more powerful for applications that need pulse width modulation, high speed I/O and counting capabilities such as alarms, motor control, corded phones, and smart card readers.
　　AT89C51RC2 主要功能特性
　　AT89C51RC2 80C52 Compatible
　　– 8051 Pin and Instruction Compatible
　　– Four 8-bit I/O Ports
　　– Three 16-bit Timer/Counters
　　– 256 Bytes Scratch Pad RAM
　　– 9 Interrupt Sources with 4 Priority Levels
　　– Dual Data Pointer
　　AT89C51RC2 Variable Length MOVX for Slow RAM/Peripherals
　　AT89C51RC2 ISP (In-system Programming) Using Standard VCC Power Supply
　　AT89C51RC2 Boot ROM Contains Low Level Flash Programming Routines and a Default Serial   Loader
　　AT89C51RC2 High-speed Architecture
　　– In Standard Mode:
　　40 MHz (Vcc 2.7V to 5.5V, both Internal and external code execution)
　　60 MHz (Vcc 4.5V to 5.5V and Internal Code execution only)
　　– In X2 mode (6 Clocks/machine cycle)
　　20 MHz (Vcc 2.7V to 5.5V, both Internal and external code execution)
　　30 MHz (Vcc 4.5V to 5.5V and Internal Code execution only)
　　– 16K/32K Bytes On-chip Flash Program/Data Memory
　　– Byte and Page (128 Bytes) Erase and Write
　　– 100K Write Cycles
　　AT89C51RC2 On-chip 1024 Bytes Expanded RAM (XRAM)
　　– Software Selectable Size (0, 256, 512, 768, 1024 Bytes)
　　– 256 Bytes Selected at Reset for TS87C51RB2/RC2 Compatibility
　　AT89C51RC2 Keyboard Interrupt Interface on Port P1
　　AT89C51RC2 SPI Interface (Master/Slave Mode)
　　AT89C51RC2 8-bit Clock Prescaler
　　AT89C51RC2 Improved X2 Mode with Independent Selection for CPU and Each Peripheral
　　AT89C51RC2 Programmable Counter Array 5 Channels
　　– High-speed Output
　　– Compare/Capture
　　– Pulse Width Modulator
　　– Watchdog Timer Capabilities
　　AT89C51RC2 Asynchronous Port Reset
　　AT89C51RC2 Full Duplex Enhanced UART
　　AT89C51RC2 Dedicated Baud Rate Generator for UART
　　AT89C51RC2 Low EMI (Inhibit ALE)
　　AT89C51RC2 Hardware Watchdog Timer (One-time Enabled with Reset-out)
　　AT89C51RC2 Power Control Modes
　　– Idle Mode
　　– Power-down Mode
　　– Power-off Flag
　　AT89C51RC2 Power Supply:
　　– 2.7 to 3.6 (3V Version)
　　– 2.7 to 5.5V (5V Version)
　　AT89C51RC2 Temperature Ranges: Commercial (0 to +70°C) and Industrial (-40°C to +85°C)
　　AT89C51RC2 Packages: PDIL40, PLCC44, VQFP44