Semiconductor device and error correction method
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United States of America Patent
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Jan 31, 2017
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app pub date -
Sep 8, 2014
filing date -
Sep 9, 2013
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Abstract
A device is provided with: memory cell array including plurality of first and second memory cells and one or more third memory cells; judging circuit that judges plurality of data values held by selected first and second memory cells of the first and second memory cells, by referring to reference potential corresponding to reference data held by a selected third memory cell; and error detection and correction circuit that detects whether or not there is error in the judged data values of the first and/or second memory cells, with judged data value of the first and second memory cells as error correcting code. When the error detection and correction circuit detects that there is error exceeding error correction capability in the judged data values, control is performed to write reference data to the selected third memory cell.
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