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:
Mar. 06, 2012
Filed:
Jul. 30, 2010
Shinya Fujioka, Kawasaki, JP;
Tomohiro Kawakubo, Kawasaki, JP;
Koichi Nishimura, Kawasaki, JP;
Kotoku Sato, Kawasaki, JP;
Shinya Fujioka, Kawasaki, JP;
Tomohiro Kawakubo, Kawasaki, JP;
Koichi Nishimura, Kawasaki, JP;
Kotoku Sato, Kawasaki, JP;
Fujitsu Semiconductor Limited, Yokohama, JP;
Abstract
An internal voltage generator when activated, generates an internal voltage to be supplied to an internal circuit. Operating the internal voltage generator consumes a predetermined amount of the power. In response to a control signal from the exterior, an entry circuit inactivates the internal voltage generator. When the internal voltage generator is inactivated, the internal voltage is not generated, thereby reducing the power consumption. By the control signal from the exterior, therefore, a chip can easily enter a low power consumption mode. The internal voltage generator is exemplified by a booster for generating the boost voltage of a word line connected with memory cells, a substrate voltage generator for generating a substrate voltage, or a precharging voltage generator for generating the precharging voltage of bit lines to be connected with the memory cells.