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华邦W77E058A40DL单片机破解与芯片代烧

时间:2012-05-24 08:51:39

芯片解密过程中,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,因为只有充分理解芯片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、成功率最高的解密方案,最大限度确保解密项目的安全可靠。此芯片其性能特征简单介绍:
W77E058A40DL FEATURES
·8-bit CMOS microcontroller
·High speed architecture of 4 clocks/machine cycle runs up to 40 MHz
·Pin compatible with standard 80C52
·Instruction-set compatible with MCS-51
·Four 8-bit I/O Ports
·One extra 4-bit I/O port and Wait State control signal (available on 44-pin PLCC/QFP package)
·Three 16-bit Timers
·12 interrupt sources with two levels of priority
·On-chip oscillator and clock circuitry
·Two enhanced full duplex serial ports
·32 KB Flash EPROM
·256 bytes scratch-pad RAM
·1 KB on-chip SRAM for MOVX instruction
·Programmable Watchdog Timer
·Dual 16-bit Data Pointers
·Software programmable access cycle to external RAM/peripherals
·Packages:
-  Lead Free(RoHS) DIP 40:  W77E058A40DL
-  Lead Free(RoHS) PLCC 44: W77E058A40PL
-  Lead Free(RoHS) PQFP 44: W77E058A40FL
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