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EM78P447S芯片解密

  EM78P447S芯片解密是EMS单片机解密研究中芯片解密研究所成功破解的典型芯片,在EMS系列单片机解密领域,芯片解密研究所早期就已经摄入且顺利破解了大部分典型单片机型号,此后,我们还针对该系列单片机开展低成本解密研究,目前,该系列芯片解密的周期短、价格低、解密成功率高、可靠性强,能够为客户的整体项目开发提供最值得信赖的技术支持。
  以下我们就首先简单介绍EM78P447S芯片的主要内部特征,供大家进行技术分析和理解。
  EM78P447S is an 8-bit microprocessor with low-power and high-speed CMOS technology. It is equipped with 4K*13-bits Electrical One Time Programmable Read Only Memory (OTP-ROM). It provides a PROTECTION bit to prevent user’s code in the OTP memory from being intruded. Seven OPTION bits are also available to meet user’s requirements.
  With its OTP-ROM feature, the EM78P447S is able to offer a convenient way of developing and verifying user’s programs. Moreover, user can take advantage of ELAN Writer to easily program his development code.
  EM78P447S FEATURES
  Operating voltage range: 2.3V~5.5V.
  Operating temperature range: 0°C~70°C.
  Operating frequency range( base on 2 clocks)
  * Crystal mode: DC~20MHz at 5V, DC~8MHz at 3V, DC~4MHz at 2.3V.
  * RC mode: DC~4MHz at 5V, DC~4MHz at 3V, DC~4MHz at 2.3V.
  Low power consumption:
  * Less then 2.2 mA at 5V/4MHz
  * Typically 30 μA, at 3V/32KHz
  * Typically 1 μA, during sleep mode
  4K × 13 bits on chip ROM
  One security register to prevent intrusion of OTP memory codes
  One configuration register to accommodate user’s requirements
  148× 8 bits on chip registers(SRAM, general purpose register)
  3 bi-directional I/O ports
  5 level stacks for subroutine nesting
  8-bit real time clock/counter (TCC) with selective signal sources, trigger edges, and overflow interrupt
  Two clocks per instruction cycle
  Power down (SLEEP) mode
  Two available interruptions
  * TCC overflow interrupt
  * External interrupt
  Programmable free running watchdog timer
  10 programmable pull-high pins
  2 programmable open-drain pins
  2 programmable R-option pins
  EM78P447S芯片解密等EMS 单片机解密需求者欢迎与芯片解密研究所联系,我们将根据您的具体需要为您提供最安全可靠的解密方案,更多详情请咨询

[来源:http://www.shandong-china.com/ [作者:admin [日期:10-04-20] [热度:]

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