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Method for programming of a semiconductor memory cell

  • US 6,292,394 B1
  • Filed: 06/29/2000
  • Issued: 09/18/2001
  • Est. Priority Date: 06/29/2000
  • Status: Expired due to Term
First Claim
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1. A method for programming an array having a multiplicity of memory cells, the method comprising the steps of:

  • per cell to be programmed, verifying a programmed or non-programmed state of said cell;

    flagging those of said cells that verify as non-programmed during one of said verify steps after having previously verified as programmed;

    applying a programming pulse having a programming level to said non-programmed cells which are not flagged cells;

    repeating said steps of verifying, flagging and applying until all of said cells verify as programmed at least once; and

    applying a boost pulse having a boost programming level lower than said programming level to said flagged cells.

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