Delay selecting circuit for semiconductor memory device

Static information storage and retrieval – Read/write circuit – Signals

Reexamination Certificate

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Details

C365S189070, C365S189090, C365S230020, C365S233120, C365S233190, C365S228000

Reexamination Certificate

active

07495974

ABSTRACT:
A delay selection circuit for use in a semiconductor memory device prevents a tAA from increasing at a read operation due to a delayed command type of signal. The delay selection circuit includes a delay line unit, a power supply voltage detection unit and a path selection unit. The delay line unit has two delay lines for delaying a command type of signal by different delay amounts. The power supply voltage detection unit detects a voltage level of a power supply voltage. The path selection unit selects one of each output of the two delay lines according to an output of the power supply voltage detection unit.

REFERENCES:
patent: 6188616 (2001-02-01), Na
patent: 6335885 (2002-01-01), Shimizu
patent: 6456543 (2002-09-01), Lee
patent: 7148732 (2006-12-01), Kakuda et al.
patent: 7177207 (2007-02-01), Vernenker et al.
patent: 2006/0221749 (2006-10-01), Kwean
patent: 2007/0070766 (2007-03-01), Kim
patent: 0122108 (1997-09-01), None
patent: 1999-0065148 (1999-08-01), None
patent: 2001-0001153 (2001-01-01), None
patent: 10-2004-0092722 (2004-11-01), None

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