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T89C51IC单片机特性与解密

T89C51IC芯片是芯耀成功破解的典型芯片型号,这里,为方便客户对芯片进行技术理解与实现的分析,方便工程师更好的对解密程序以及芯片本身的特性及应用进行了解,我们提供对T89C51IC芯片的基本特性介绍,供大家做技术参考。
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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