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TS87C51RB2单片机二次解密

时间:2011-04-23 09:22:29

单片机解密过程中,对芯片内部结构及其加解密特征进行技术分析是解密工程师的一项必修课,因为只有充分理解单片机内部结构原理等技术信息,工程师才能准确进行方案开发,确定最可靠、成功率最高的芯片解密方案,最大限度确保解密项目的安全可靠。
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2. Features
· 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, CQPJ44 (window), CDIL40 (window), PLCC68, VQFP64 1.4, JLCC68 (window)

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