Methods and apparatus for storing memory test information
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United States of America Patent
Stats
-
Feb 13, 2007
Grant Date -
Jan 2, 2003
app pub date -
May 31, 2002
filing date -
Jun 8, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for storing memory test information includes the steps of storing a portion of information related to locations and numbers of failed memory cells detected while testing memory, and updating the stored information as failed memory cells are detected to indicate a first type of memory spare is to be assigned to repair a failed memory cell, a second complementary type of memory spare is to be assigned to repair the failed memory cell, or the memory is not repairable. The first type of memory spare corresponds to one of a row and a column portion of memory and the second complementary type of memory spare corresponds to the other of the row and column portions of memory.
First Claim
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 8 Citation Count
- G11C Class
- 2.01 % this patent is cited more than
- 18 Age
