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Method for changing read parameter for improving read performance and apparatuses using the same

  • US 9,009,390 B2
  • Filed: 09/21/2011
  • Issued: 04/14/2015
  • Est. Priority Date: 10/04/2010
  • Status: Active Grant
First Claim
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1. A method of operating a memory, the method comprising:

  • performing a first read operation to read data stored in a region of the memory using a first read voltage;

    determining whether reading is successful using a first error correction parameter; and

    when reading is successful, changing the first read voltage to a second read voltage and changing the first error correction parameter to a second error correction parameter in accordance with current cell conditions of the region;

    transmitting the data read in the first read operation using the first read voltage to a host; and

    performing a second read operation to read data stored in the memory using the second read voltage.

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