Memory controller for nonvolatile memory device, memory system comprising memory controller, and related methods of operation
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United States of America Patent
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Oct 7, 2014
Grant Date -
May 16, 2013
app pub date -
Sep 7, 2012
filing date -
Nov 15, 2011
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Abstract
A nonvolatile memory device comprises a memory controller having a memory cell status estimator that generates status estimation information indicating the status of a memory cell based on status register data, a coupling group index selector configured to generate a select signal for selecting a page and coupling group index from the status estimation information, and a memory cell status value generator configured to map the status estimation information to the data reliability decision bits and the coupling group index and generate a status value of the memory cell for error correction code decoding.
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