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MEMORY SYSTEM AND METHOD OF CONTROLLING NONVOLATILE MEMORY

  • US 20170024276A1
  • Filed: 11/23/2015
  • Published: 01/26/2017
  • Est. Priority Date: 07/23/2015
  • Status: Active Grant
First Claim
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1. A memory system comprising:

  • a nonvolatile memory; and

    a controller electrically connected to the nonvolatile memory and configured to;

    manage a plurality of namespaces for storing a plurality of kinds of data having different update frequencies;

    encode write data by using first coding for reducing wear of a memory cell to generate first encoded data;

    generate second encoded data to be written to the nonvolatile memory by adding an error correction code to the first encoded data; and

    change a ratio between the first encoded data and the error correction code based on a namespace to which the write data is to be written.

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