Semiconductor memory device

Details Semiconductor memory device Semiconductor memory device

2007-09-13

2009-10-20

Dinh, Son (Department: 2824)

Static information storage and retrieval

Powering

Conservation of power

C365S226000, C365S119000, C365S230060

Reexamination Certificate

active

07606106

ABSTRACT:
A semiconductor memory device operates by using a fixed power and a variable power. The device includes a plurality of word lines which select rows of a memory cell array, a plurality of word line drivers each of which is connected to a corresponding one of the word lines and includes a first CMOS gate, a first cutoff switch which is connected between a fixed power terminal and a power terminal of the first CMOS gate and cuts off the fixed power in a sleep mode, a switching circuit which is connected to the plurality of word lines and connects the plurality of word lines to a ground terminal in the sleep mode, and a power control circuit which generates the variable power by using the fixed power and sets the variable power to 0 V in the sleep mode.

REFERENCES:
patent: 6188628 (2001-02-01), Tomotani et al.
patent: 6525984 (2003-02-01), Yamagata et al.
patent: 7385841 (2008-06-01), Houston
patent: 2007/0035987 (2007-02-01), Houston
patent: 11-219589 (1999-08-01), None
patent: 2000-298987 (2000-10-01), None

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