Static information storage and retrieval – Read/write circuit – Signals
Reexamination Certificate
2007-12-28
2010-02-16
Nguyen, Tuan T (Department: 2824)
Static information storage and retrieval
Read/write circuit
Signals
C365S229000, C365S230080
Reexamination Certificate
active
07663946
ABSTRACT:
A semiconductor memory device is capable of stably securing an on-die-termination (ODT) latency in spite of PVT variations and various operating speeds. The semiconductor memory device includes a plurality of termination resistors connected to an output pad in series and parallel, a drive controller, a delay path, and a delay control signal generator. The drive controller activates/inactivates the plurality of termination resistors in response to a driving control signal. The delay path delays a termination command by a delay time corresponding to an on-die-termination (ODT) latency to output the driving control signal, wherein the termination command is converted into a delay locked loop (DLL) clock domain signal. The delay control signal generator controls a conversion point of the termination command into the DLL clock domain signal.
REFERENCES:
patent: 6047346 (2000-04-01), Lau et al.
patent: 6577554 (2003-06-01), Song et al.
patent: 6928007 (2005-08-01), Jin
patent: 7019555 (2006-03-01), Lee
patent: 7034567 (2006-04-01), Jang
patent: 7342412 (2008-03-01), Kim
patent: 7404018 (2008-07-01), Dietrich et al.
patent: 7474572 (2009-01-01), Lee et al.
patent: 2005/0180229 (2005-08-01), Jin
patent: 2005/0268059 (2005-12-01), LaBerge
patent: 2009/0222637 (2009-09-01), Kim
patent: 2004-310981 (2004-11-01), None
patent: 2005-228458 (2005-08-01), None
patent: 10-2005-0104225 (2005-11-01), None
patent: 10-2006-0089357 (2006-08-01), None
Blakely & Sokoloff, Taylor & Zafman
Hynix / Semiconductor Inc.
Nguyen Hien N
Nguyen Tuan T
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