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:
Jun. 03, 2008
Filed:
Apr. 12, 2006
Takayasu Ito, Tokyo, JP;
Mitsuru Hiraki, Tokyo, JP;
Masashi Horiguchi, Tokyo, JP;
Toyohiro Shimogawa, Tokyo, JP;
Takayasu Ito, Tokyo, JP;
Mitsuru Hiraki, Tokyo, JP;
Masashi Horiguchi, Tokyo, JP;
Toyohiro Shimogawa, Tokyo, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
A semiconductor device includes: a power switch connecting an internal power supply in which power is not shut down and an internal power supply in which power is shut down; and an internal voltage determining circuit for determining voltage of the internal power supply in which power is shut down. Voltage of the internal power supply in which power is shut down is generated from external power supply voltage by using a regulator circuit. When the power of the internal power supply is interrupted, the power switch is turned off, the regulator circuit is turned off, and an output of the regulator circuit is shorted to a ground potential. When power of the internal power supply is resumed, the regulator circuit is turned on, shorting is cancelled, increased voltage of the internal power supply is determined, operation of a circuit block is started, and the switch is turned on.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile