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Low current redundancy anti-fuse method and apparatus

  • US 6,351,140 B2
  • Filed: 02/27/2001
  • Issued: 02/26/2002
  • Est. Priority Date: 10/03/1996
  • Status: Expired due to Fees
First Claim
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1. A programmable circuit for providing a programmed signal in an integrated circuit, comprising:

  • a first node, wherein the state of the programmed signal is based on the state of the first node;

    a first anti-fuse for selectively coupling the first node to a first power supply when in a programmed state and decoupling the first node from the first power supply when in an unprogrammed state;

    a second anti-fuse for selectively coupling the first node to a second power supply when in a programmed state and decoupling the first node from the second power supply when in an unprogrammed state; and

    a switch for selectively coupling the first node to the second power supply regardless of the state of the second anti-fuse.

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