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:
Feb. 03, 2009
Filed:
Sep. 01, 2005
Shinichiro Shiratake, Yokohama, JP;
Yukihito Oowaki, Yokohama, JP;
Hiroyuki Hara, Fujisawa, JP;
Tetsuya Fujita, Kawasaki, JP;
Fumitoshi Hatori, Yokohama, JP;
Masataka Matsui, Yokohama, JP;
Shinichiro Shiratake, Yokohama, JP;
Yukihito Oowaki, Yokohama, JP;
Hiroyuki Hara, Fujisawa, JP;
Tetsuya Fujita, Kawasaki, JP;
Fumitoshi Hatori, Yokohama, JP;
Masataka Matsui, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to the present invention, there is provided a semiconductor device including a power supply circuit which receives an external power supply voltage supplied, and outputs an internal power supply voltage not higher than the external power supply voltage; a system module which receives the internal power supply voltage, and performs a predetermined operation; and a performance monitor circuit which measures a processing speed of said system module when the internal power supply voltage is applied, and, on the basis of the processing speed, outputs a first control signal which requests to set the external power supply voltage at a first level, and a second control signal which requests said power supply circuit to set the internal power supply voltage at a second level. The power supply circuit outputs the internal power supply voltage having the second level on the basis of the second control signal applied thereto.