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Circuit for cancelling and replacing redundant elements

  • US 5,838,620 A
  • Filed: 02/06/1997
  • Issued: 11/17/1998
  • Est. Priority Date: 04/05/1995
  • Status: Expired due to Term
First Claim
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1. A method of repairing an integrated circuit, the method comprising the steps of;

  • programming a first redundant element to respond to an address of a defective selectively addressable primary element;

    one time enabling the first redundant element;

    permanently disabling the first redundant element after the step of one time enabling the first redundant element;

    programming a second redundant element to respond to an address of the defective selectively addressable primary element; and

    one time enabling the second redundant element.

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