The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2007
Filed:
Jun. 22, 2006
Takesada Akiba, Hachioji, JP;
Shigeki Ueda, Hachioji, JP;
Toshikazu Tachibana, Tachikawa, JP;
Masashi Horiguchi, Koganei, JP;
Takesada Akiba, Hachioji, JP;
Shigeki Ueda, Hachioji, JP;
Toshikazu Tachibana, Tachikawa, JP;
Masashi Horiguchi, Koganei, JP;
Renesas Technology Corporation, Tokyo, JP;
Hitachi Device Engineering Co., Ltd., Chiba-ken, JP;
Abstract
The present invention provides a semiconductor memory circuit capable of reducing current consumption at non-operation in a system equipped with a plurality of chips that share the use of a power supply, address signals and a data bus. The semiconductor memory circuit has an internal circuit which is capable of selectively performing the supply and stop of an operating voltage via switch means and includes a memory array. An input circuit, which receives a predetermined control signal therein, controls the supply and stop of the operating voltage by the switch means to reduce a DC current and a leak current when no memory operation is done, whereby low power consumption can be realized.