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Retired page utilization (RPU) for improved write capacity of solid state drives

  • US 10,521,339 B2
  • Filed: 02/27/2014
  • Issued: 12/31/2019
  • Est. Priority Date: 02/28/2013
  • Status: Active Grant
First Claim
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1. A method for writing data to a memory module, the method comprises:

  • determining to write a representation of a data unit to a retired group of memory cells;

    wherein the retired group of memory cells are capable of storing a certain value only after being erased, but are capable of storing certain other values without being erased;

    searching for a selected retired group of memory cells that can store a representation of the data unit without being erased; and

    writing the representation of the data unit to the selected retired group of memory cells.

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