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T89C51IC单片机破解研究与分析

时间:2011-04-12 08:42:46

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T89C51IC2是80C51 8位微型控制器的一个高性能闪光版本。它包含节目和数据的一个32Kbyte闪存块。32Kbyte闪存可以平行是被编程的或者方式或在串行方式以ISP能力或与软件。 编程的电压从标准VCC别针内部地引起。T89C51IC2保留80C52的所有特点与256个字节的内部RAM、7来源4级中断控制器和三定时器或者柜台。
Features
·80C52 Compatible
– 8051 pin and instruction compatible
– Four 8-bit I/O ports + 2 I/O I2C Interface pins
– Three 16-bit timer/counters
– 256 bytes scratch pad RAM
– 10 Interrupt sources with 4 priority levels
– Dual Data Pointer
·Variable length MOVX for slow RAM/peripherals
·ISP (In System Programming) using standard VCC power supply.
·Boot ROM contains low level FLASH programming routines and a default serial loader
·High-Speed Architecture
– 40 MHz in standard mode
– 20 MHz in X2 mode (6 clocks/machine cycle)
·32-Kbytes on-chip FLASH program / data Memory
– Byte and page (128 bytes) erase and write
– 10k write cycles
– On-chip 1024 bytes expanded RAM (XRAM)
– Software selectable size (0, 256, 512, 768, 1024 bytes)
– 256 bytes selected at reset for T87C51RB2/RC2 compatibility
·Keyboard interrupt interface on port P1
·400-Kbits/s Multimaster I2C Interface
·SPI Interface (Master / Slave Mode)
·Sub clock 32kHz crystal oscillator
·8-bit clock prescaler
·Improved X2 mode with independant selection for CPU and each peripheral
·Programmable Counter Array 5 Channels with:
–  High Speed Output,
–  Compare / Capture,
–  Pulse Width Modulator,
–  Watchdog Timer Capabilities
·Asynchronous port reset
·Full duplex Enhanced UART
·Dedicated Baud Rate Generator for UART
·Low EMI (inhibit ALE)
·Hardware Watchdog Timer (One-time enabled with Reset-Out)
·Power control modes:
– Idle Mode.
– Power-down mode.
– Power-Off Flag.
·Power supply: 4.5V to 5.5V or 2.7V to 3.6V
·Temperature ranges: Commercial (0 to +70°C) and industrial (-40°Cto+85°C).
·Packages: PLC44, VQFP44
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