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Method of operating incrementally programmable non-volatile memory

  • US 9,558,813 B2
  • Filed: 04/18/2016
  • Issued: 01/31/2017
  • Est. Priority Date: 08/05/2013
  • Status: Active Grant
First Claim
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1. A method of dividing a total capacity (Ct) of an non-volatile memory array containing M cells and N distinct program levels into P distinct periods, the method comprising:

  • performing a first program operation in a first period of the P distinct periods to store logical data in the M cells of the array using at least two or more separate program levels {PVt1, PVt2} of the N distinct program levels; and

    performing a second program operation in a subsequent second period of the P distinct periods to store logical data in the M cells of the array using at least two separate program levels {PVt3, PVt4} of the N distinct program levels, wherein at least one of {PVt3, PVt4} is different from and greater than {PVt1, PVt2};

    wherein data in the M cells is reset to a common initialized state by a reset operation between the first and second program operations.

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