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:
May. 27, 2008
Filed:
May. 20, 2004
Motokazu Ozawa, Kokubunji, JP;
Naohiko Irie, Kokubunji, JP;
Saneaki Tamaki, Kodaira, JP;
Hisayoshi Ide, Kunitachi, JP;
Miki Hayakawa, Kokubunji, JP;
Motokazu Ozawa, Kokubunji, JP;
Naohiko Irie, Kokubunji, JP;
Saneaki Tamaki, Kodaira, JP;
Hisayoshi Ide, Kunitachi, JP;
Miki Hayakawa, Kokubunji, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
A mechanism of making a low standby current caused by power off compatible with a fast return operation from a standby caused by an interrupt is realized. An information processing device has a first area that includes a central processing unit and peripheral circuit modules, a second area having information holding circuits for holding values of registers contained in the peripheral circuit modules, and a first power switch for controlling supply of a current to the first area. When the information processing device operates in a first mode, an operating current is supplied to the first area and the second area. When the information processing device operates in a second mode, the first power switch is controlled so that the supply of the current to the first area can be shut off, and the supply of the current to the second area is continued.