Structure and method of repairing SDRAM by generating...

Details Structure and method of repairing SDRAM by generating... Structure and method of repairing SDRAM by generating...

2011-04-12

2011-04-12

Lamarre, Guy J. (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Memory testing

Reexamination Certificate

active

07925938

ABSTRACT:
A structure and method for repairing SDRAM by generating a Slicing Table of Fault Distribution and using the size of SDRAM page as the partition basic block. The Slicing Table of Fault Distribution is generated at each booting or memory-testing, and the elemental range of the number of detected defects is formed. When the number of detected defects exceeds the elemental range, the limits of another partition block with a lower rate of defects are used to cure the defect. The repair bit is also encoded according to the Slicing Table of Fault Distribution, pointing to the remapping bit so that the access operation occurs at the remapping bit. As such, the cost of producing, testing and repairing SDRAM is greatly reduced.

REFERENCES:
patent: 5758056 (1998-05-01), Barr
patent: 5970000 (1999-10-01), Kirihata et al.
patent: 6052798 (2000-04-01), Jeddeloh
patent: 6181614 (2001-01-01), Aipperspach et al.
patent: 6484277 (2002-11-01), Schonemann
patent: 6493654 (2002-12-01), Sugimoto
patent: 6651202 (2003-11-01), Phan
“Built-In Self-Repair for Divided Word Line Memory”, Shyue-Kung Lu et al., Circuits and Systems, 2001, vol. 4, pp. 13-16, May 6-9, 2001.
“A BISR (Built-In Self-Repair) Circuit for Embedded Memory with Multiple Redundancies”, Heon-Cheol Kim et al., IEEE 1999 0-7803-5727-2/99, pp. 602-605, Oct. 26-27, 1999.

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