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Small anti-fuse circuit to facilitate parallel fuse blowing

  • US 6,628,561 B2
  • Filed: 08/30/2001
  • Issued: 09/30/2003
  • Est. Priority Date: 08/30/2001
  • Status: Active Grant
First Claim
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1. A programming circuit for a plurality of programmable elements, said programming circuit comprising:

  • a plurality of programmable elements;

    a plurality of element programming circuits each associated with a programmable element and each including a latch circuit for receiving and holding a desired programming state of an associated programmable element, said plurality of element programming circuits setting the state of said associated programmable elements in accordance with a desired programming state held in an associated latch in response to a common control signal; and

    a latch programming circuit for temporarily applying a programming signal to an input of a respective latch circuit, said latch circuit latching a state of said programming signal, said latch programming circuit comprising, a latch isolation transistor coupled between said programmable element and said latch circuit, and a latch-programming transistor having a gate controlled by a first latch-programming signal, a first source/drain coupled to a second latch-programming signal, and a second source/drain coupled to said input of said latch circuit through said latch isolation transistor.

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