Semiconductor memory device

Details Semiconductor memory device Semiconductor memory device

2006-06-26

2008-11-11

Tran, Anh Q (Department: 2819)

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Bus or line termination

C326S032000, C326S034000

Reexamination Certificate

active

07449914

ABSTRACT:
A semiconductor memory device includes a code channel for outputting a plurality of code signals based on a code control signal inputted from an external source; a termination resistor decoder for decoding a chip selection signal, an on die termination (ODT) control signal and the plurality of code signals and outputting a plurality of selection signals based on decoded signals; and an ODT block for providing an output data pad with impedance of a termination resistor which is selected in response to the plurality of selection signals.

REFERENCES:
patent: 6777976 (2004-08-01), Kuge
patent: 7019555 (2006-03-01), Lee
patent: 7138823 (2006-11-01), Janzen et al.
patent: 2005/0225353 (2005-10-01), Kwon
patent: 2005/0231230 (2005-10-01), Na et al.
patent: 2004-310981 (2004-11-01), None
patent: 2005-228458 (2005-08-01), None
patent: 2003-0090955 (2003-12-01), None

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