COLUMN REDUNDANCY SYSTEM AND METHOD FOR MICRO-CELL EMBEDDED DRAM ARCHITECTURE

PURPOSE: An effective column restoration system is provided to replace a defective column element with a redundant element. CONSTITUTION: A column redundant device(10) includes a fuse information storage device(12) for every individual microcell to store fuse information indicating the location of a...

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Bibliographic Details
Main Authors PONTIUS DALE E, HSU LOUIS LU CHEN, FREDEMAN GREGORY, KIRIHATA TOSHIAKI K, HWANG CHORNG LII
Format Patent
LanguageEnglish
Korean
Published 04.03.2004
Edition7
Subjects
INFORMATION STORAGE
PHYSICS
STATIC STORES
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Summary:PURPOSE: An effective column restoration system is provided to replace a defective column element with a redundant element. CONSTITUTION: A column redundant device(10) includes a fuse information storage device(12) for every individual microcell to store fuse information indicating the location of any one of defective elements. A first bank address decoding mechanism decodes a reading bank address corresponding to a first microcell and a second bank address decoding mechanism decodes a writing bank address corresponding to a second microcell. When at least one defective column element is included in the first microcell, the device(10) generates an internal column address corresponding to at least one defective column element in the first microcell. Similarly, the device(10) generates an internal column address corresponding to at least one defective column element in the second microcell when at least one defective column element is included in the second microcell.
Bibliography:Application Number: KR20030055278