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:
Nov. 06, 2007
Filed:
Jul. 09, 2004
Hiroki Wake, Chiba, JP;
Hiroki Wake, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
A semiconductor device has a DC-DC converter control circuit for selectively carrying out a boosting operation and a deboosting operation in accordance with a value of a power supply voltage supplied to the DC-DC converter control circuit and for outputting an activation pulse during a rise of the power supply voltage. The DC-DC converter control circuit has a voltage detection circuit for monitoring the power supply voltage to judge whether the DC-DC converter control circuit carries out the boosting operation or the deboosting operation. A control circuit controls the output of the activation pulse in accordance with an output signal from the voltage detection circuit and stops the output of the activation pulse when the voltage detection circuit judges that the DC-DC converter control circuit carries out the deboosting operation.