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:
Aug. 28, 2012
Filed:
Sep. 25, 2011
Toshio Sasaki, Tokyo, JP;
Kazuki Fukuoka, Tokyo, JP;
Ryo Mori, Tokyo, JP;
Yoshihiko Yasu, Tokyo, JP;
Toshio Sasaki, Tokyo, JP;
Kazuki Fukuoka, Tokyo, JP;
Ryo Mori, Tokyo, JP;
Yoshihiko Yasu, Tokyo, JP;
Renesas Electronics Corporation, Kawasaki-shi, JP;
Abstract
The present invention is directed to perform fine low-voltage control without largely increasing the circuit layout area in a low-power consumption structure. In the case of shifting a region to a low-speed mode, a system controller outputs a request signal and an enable signal to a power switch controller and a low-power drive circuit, respectively, to turn off a power switch and to perform a control so that the voltage level of a virtual reference potential becomes about 0.2 V to about 0.3V. The region operates on voltages between a power supply voltage and a virtual reference potential, so that it is controlled in the low-speed mode.