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. 30, 2004
Filed:
May. 20, 1999
Yonetaro Totsuka, Kokubunji, JP;
Koichiro Ishibashi, Warabi, JP;
Hiroyuki Mizuno, Kokubunji, JP;
Osamu Nishii, Inagi, JP;
Kunio Uchiyama, Kodaira, JP;
Takanori Shimura, Chiba, JP;
Asako Sekine, Hachioji, JP;
Yoichi Katsuki, Akishima, JP;
Susumu Narita, Kokubunji, JP;
Renesas Technology Corporation, Tokyo, JP;
Abstract
The feature of the present invention consists in: a processor main circuit for executing program instruction strings on a processor chip; a substrate bias switching unit for switching voltages of substrate biases applied to a substrate of the processor main circuit; and an operation mode control unit for controlling, in response to the execution of an instruction to proceed to a stand-by mode in the processor main circuit, the substrate bias switching unit in such a way that the biases are switched over to voltages for the stand-by mode, and for controlling, in response to an interruption of the stand-by release from the outside, the substrate bias switching unit in such a way that the biases are switched over to voltages for a normal mode, and also for releasing, after the bias voltages switched thereto have been stabilized, the stand-by of the processor main circuit to restart the operation.