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Method for erasing a memory cell

  • US 6,888,757 B2
  • Filed: 09/08/2003
  • Issued: 05/03/2005
  • Est. Priority Date: 10/24/2001
  • Status: Expired due to Term
First Claim
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1. A method for erasing a bit of a memory cell in a non-volatile memory cell array, the method comprising:

  • applying an erase pulse to at least one bit of at least one memory cell of said array;

    waiting a delay period wherein a threshold voltage of said at least one memory cell drifts to a different magnitude than at the start of the delay period; and

    after said delay period, erase verifying said at least one bit to determine if said at least one bit is less than a reference voltage level.

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