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GMS34004TM芯片解密实例

  对GMS34004TM进行单片机解密或破解,首先需要对该单片机性能特征与内部构成有一定的了解,因为我们知道,单片机解密一般有软解和硬解两种手段,只有很好的理解单片机本身的特性及其内部加解密特性与结构,才能在综合考虑解密经验及客户需求的基础上选择合适的、可靠的解密方案,这里深圳芯片解密研究所技术人员为大家提供该单片机的基本介绍以供参考。
  深圳芯片解密研究所在长期的技术研究中,针对实验开发中的每一款芯片都要经过无数次反复解析与验证,很好的理解其加解密特征,能够为客户提供安全可靠、高效合理、具备极强成本与周期控制优势的解密方案。


  关于GMS34004TM
  The GMS340 series are remote control transmitter which uses CMOS technology,and the EPROM version of GMS34XXX series.This enables transmission code outputs of different configurations, multiple custom code output, and double push key output for easy fabrication. The GMS340 series are suitable for remote control of TV, VCR, FANS, Airconditioners,Audio Equipments, Toys, Games etc.
  GMS34004TM Characteristics
  Program memory : 512bytes for GMS34004T
  1,024 bytes for GMS34112T/140T
  Data memory : 32 4 bits
  43 types of instruction set
  3 levels of subroutine nesting
  1 bit output port for a large current (REMOUT signal)
  Operating frequency :300KHz~500KHz at KHz version
  2.4MHz~4MHz at MHz version
  300KHz~4.2MHz at WIDE version
  Instruction cycle : fOSC/6 at KHz and WIDE version fOSC/48 at MHz version
  CMOS process (3.0V or 5.0V power supply)
  Stop mode (Through internal instruction)
  Released stop mode by key input
  Built in capacitor for ceramic oscillation circuit at KHz version
  Built in a watch dog timer (WDT)
  Low operating voltage : 2.2~4.5V (at KHz and MHz version)
  Normal operating voltage: 4.0~5.0V (at WIDE version)