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Nonvolatile memory device, operating method thereof and memory system including the same

  • US 8,559,235 B2
  • Filed: 03/11/2011
  • Issued: 10/15/2013
  • Est. Priority Date: 08/26/2010
  • Status: Active Grant
First Claim
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1. A method of operating a non-volatile memory device, the method comprising:

  • performing an erasing operation to memory cells associated with a plurality of string selection lines (SSLs), the memory cells associated with the plurality of SSLs constituting a memory block; and

    verifying the erasing operation to the memory cells comprising;

    verifying the erasing operation to first memory cells associated with a first string selection line (SSL) line of the plurality of SSLs;

    when verifying the erasing operation to the first memory cells associated. with the first SSL line fails, performing the erasing operation to the memory cells associated with the plurality of SSLs while holding a SSL address for the first SSL line; and

    when verifying the erasing operation to the first memory cells passes, verifying the erasing operation to second memory cells associated with a second SSL line.

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