Semiconductor memory device and semiconductor device

Details Semiconductor memory device and semiconductor device Semiconductor memory device and semiconductor device

2007-09-04

2009-11-24

Luu, Pho M (Department: 2824)

Static information storage and retrieval

Read/write circuit

Signals

C365S233100, C365S233120, C365S063000, C327S141000, C327S158000

Reexamination Certificate

active

07623398

ABSTRACT:
Disclosed is a module where semiconductor memory devices each having a DLL (Delay Lock Loop) are stacked or a multi-chip module (MCM) having the semiconductor memory devices, a dedicated pad for sharing a clock signal between one of the semiconductor memory devices and other semiconductor memory device is included. The clock signal is delay adjusted by the DLL. The DLL in the one semiconductor memory device is operated, while the DLL in the other semiconductor memory device is not operated. A flying lock clock signal synchronized with an external differential clock signal and generated from a clock signal delay adjusted by the DLL is output from the dedicated pad of the one semiconductor memory device. The other semiconductor memory device receives the flying lock clock signal from the dedicated pad.

REFERENCES:
patent: 5949139 (1999-09-01), Imura et al.
patent: 6078514 (2000-06-01), Takemae et al.
patent: 6205082 (2001-03-01), Tomita et al.
patent: 6618320 (2003-09-01), Hasegawa et al.
patent: 6819608 (2004-11-01), Watanabe
patent: 7429794 (2008-09-01), Ryu et al.
patent: 7464225 (2008-12-01), Tsern
patent: 2003/0221044 (2003-11-01), Nishio et al.
patent: 2005/0206416 (2005-09-01), Kizer
patent: 2005/0280165 (2005-12-01), Ryu et al.
patent: 11/008346 (1999-01-01), None
patent: 11/086546 (1999-03-01), None
patent: 11-340421 (1999-12-01), None
patent: 2002-015567 (2002-01-01), None
patent: 2002-318638 (2002-10-01), None
patent: 2005-228932 (2005-05-01), None
patent: 2006-013495 (2006-01-01), None
Japanese Patent Office issued a Japanese Office Action dated Mar. 9, 2009, Application No. 2006-240474.

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