Semiconductor devices identifier generation method and semiconductor devices

Semiconductor devices identifier generation method and semiconductor devices

  • CN 101,421,792 B
  • Filed: 04/04/2007
  • Issued: 09/23/2015
  • Est. Priority Date: 04/13/2006
  • Status: Active Grant
First Claim
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1. produced a method for identifier by the semiconductor devices comprising the volatile memory with multiple storage unit, said method comprising the steps of:

  • A () makes storage unit present multiple pseudo random bit values intrinsic for the change in the microstructure of storage unit;

    B () obtains pseudo random bit values from the subset of at least multiple storage unit;

    AndC () produces identifier according to obtained pseudo random bit values,Wherein, when repeating step (a), at least some from the storage unit wherein obtaining described pseudo random bit values can present different pseudo random bit values, and wherein, the method also comprises repeated execution of steps (a) and (b);

    And the step wherein producing identifier comprises;

    the pseudo random bit values that the step (b) that merga pass repeatedly repeats obtains.

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