Memory with retargetable memory cell redundancy
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United States of America Patent
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Nov 4, 2008
Grant Date -
May 10, 2007
app pub date -
Nov 8, 2005
filing date -
Nov 8, 2005
priority date (Note) -
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Abstract
In a memory array having redundant columns, a scheme allows defective cells to be individually remapped to redundant cells in a redundant column. Redundant cells in one redundant column replace defective cells in multiple non-redundant columns. Remapping is done as part of initial test and configuration. Specific hardware can be used for the scheme or firmware in the memory controller can implement the scheme.
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