Method for controlling a DRAM
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United States of America Patent
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Issued Date -
May 14, 2009
app pub date -
May 7, 2008
filing date -
Nov 14, 2007
priority date (Note) -
Abandoned
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Abstract
A method for controlling a DRAM includes detecting failed memory cells of the DRAM, recording the rows corresponding to the failed memory cells, receiving a control signal for accessing the memory cell with column address X and row address Y, determining if the row address Y is in the recorded failed rows list, and if yes, replacing the memory cell to be accessed with the memory cell with the column address X and row address Z which is not same as Y.
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