SEMICONDUCTOR MEMORY DEVICE

PURPOSE: A semiconductor memory device is provided to easily secure the expandability of a redundancy circuit since a circuit related to a redundancy word line does not increase even though the number of the redundancy word line increase. CONSTITUTION: A common control signal generating unit(310) ge...

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Bibliographic Details
Main Authors CHI, SUNG SOO, YOON, SEOK CHEOL
Format Patent
LanguageEnglish
Korean
Published 01.10.2010
Subjects
INFORMATION STORAGE
PHYSICS
STATIC STORES
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Summary:PURPOSE: A semiconductor memory device is provided to easily secure the expandability of a redundancy circuit since a circuit related to a redundancy word line does not increase even though the number of the redundancy word line increase. CONSTITUTION: A common control signal generating unit(310) generates a word line control signal(WLOFF) and a low enable signal(XDECEN). A redundancy selection signal generation unit(320) generates a plurality of redundancy word line selection signals(RWLEN ,RWLEN ). The redundancy selection signal generation unit includes a first logic combination unit for performing NAND operation of a first test signal and a first internal address. A plurality of redundancy word line drivers(330,340) drives the redundancy word line which is selected by the redundancy word line selection signal.
Bibliography:Application Number: KR20090024634