Column redundancy circuit with reduced signal path delay

A semiconductor memory has memory elements arranged in memory blocks with each memory block having normal columns and at least one redundant column. In the event of a normal column being found to be defective, a redundant column may be used to replace the defective column. The semiconductor memory a...

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Bibliographic Details
Main Authors MAR, CYNTHIA, WEI, FANGXING, KIKUKAWA, HIROHITO
Format Patent
LanguageEnglish
French
German
Published 27.04.2005
Edition7
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
INFORMATION STORAGE
PHYSICS
STATIC STORES
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Summary:A semiconductor memory has memory elements arranged in memory blocks with each memory block having normal columns and at least one redundant column. In the event of a normal column being found to be defective, a redundant column may be used to replace the defective column. The semiconductor memory allows a redundant column in one block to replace a defective column in another block. The memory block may also be separated into an upper and lower portion allowing the portions to individually replace upper or lower column portions from different defective columns.
Bibliography:Application Number: EP20040023097