Semiconductor memory device and driving method thereof

Static information storage and retrieval – Addressing – Sync/clocking

Reexamination Certificate

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Details

C365S189040, C365S189140, C365S189150, C365S189160, C365S189170, C365S189050, C365S189070, C365S233110, C365S233120, C365S233160, C365S233170, C365S233190, C365S236000

Reexamination Certificate

active

08081538

ABSTRACT:
A semiconductor memory device includes output enable signal generation means configured to be reset in response to an output enable reset signal, count a DLL clock signal and an external clock signal, and generate an output enable signal in correspondence to a read command and an operating frequency; and activation signal generation means configured to generate an activation signal for inactivating the output enable signal generation means during a write operation interval.

REFERENCES:
patent: 2008/0170446 (2008-07-01), Kwon et al.
patent: 2009/0063917 (2009-03-01), Tokunaga et al.
patent: 2009/0089538 (2009-04-01), Yeh et al.
patent: 2009/0115450 (2009-05-01), Kim et al.
patent: 2008-226458 (2008-09-01), None
patent: 2009-59434 (2009-03-01), None
patent: 100328673 (2002-03-01), None
patent: 1020050123003 (2005-12-01), None
patent: 101002378 (2010-12-01), None
patent: WO2009037770 (2009-03-01), None

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