Deep power down control circuit

Details Deep power down control circuit Deep power down control circuit

2005-02-01

2005-02-01

Phung, Anh (Department: 2824)

Static information storage and retrieval

Powering

Conservation of power

C365S226000

Reexamination Certificate

active

06850453

ABSTRACT:
A deep power down control circuit includes a deep power down switch unit to separate an external power voltage line from a selected one of a plurality of internal power voltage lines according to a deep power down signal, a deep power down discharge unit for connecting the plurality of internal power voltage lines to a ground voltage line and to discharge them to a ground voltage level according to the deep power down signal. The deep power down control circuit also includes a deep power down signal generating unit control according to a bank active detect signal and a burst end command, to output the deep power down signal by using a clock enable signal. The deep power down control circuit connects the plurality of internal power voltage lines to the ground voltage line, and thus prevents floating to remove the possibility of inversion of the power voltage or generation of the latch-up. Moreover, the deep power down control circuit prevents leakage current by a micro bridge among the plurality of internal power voltage lines.

REFERENCES:
patent: 4718043 (1988-01-01), Akatsuka
patent: 5197034 (1993-03-01), Fandrich et al.
patent: 5955913 (1999-09-01), Roohparvar
patent: 6510096 (2003-01-01), Choi et al.
patent: 6744687 (2004-06-01), Koo et al.

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