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Microcircuit with memory that is protected by both hardware and software

  • US 5,998,858 A
  • Filed: 07/19/1996
  • Issued: 12/07/1999
  • Est. Priority Date: 07/20/1995
  • Status: Expired due to Term
First Claim
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1. A secured data module apparatus comprising:

  • a housing with a cavity formed from a first conductive surface and a second conductive surface with an insulator disposed therebetween in an area where a portion of said first conductive surface and a portion of said second conductive surface overlap such that said insulator is disposed between overlapping side portions of said firs and second conductive surfaces, so as to insulate said first and second conductive surfaces from each other;

    a substrate with a top surface and a bottom surface disposed in said cavity;

    a semiconductor chip comprising a monolithic integrated circuit, said semiconductor chip having a passivated side and a bulk side, wherein said passivated side is affixed to said top surface of said substrate; and

    affixing means for affixing said passivated side of said semiconductor chip to said top surface of said substrate.

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