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:
Dec. 30, 2014
Filed:
May. 02, 2011
Koji Suzuki, Miyazaki, JP;
Koji Suzuki, Miyazaki, JP;
LAPIS Semiconductor Co., Ltd., Yokohama, JP;
Abstract
A timer circuit is provided with a comparator CMP, a control unit and a comparator CMP. The comparator CMPcompares a potential of the capacitance element with the potential of a reference voltage VREF_H, and if the potential of the capacitance element reaches the potential of the reference voltage VREF_H, outputs a pre-specified time-up signal. The control unit performs control such that the potential of the capacitance element is higher than a potential of a reference voltage VREF_S, which is higher than the ground potential and lower than the potential of the reference voltage VREF_H. The comparator CMPcompares the potential of the capacitance element with the potential of the reference voltage VREF_S, and if the potential of the capacitance element is lower than the potential of the reference voltage VREF_S, outputs a short circuit detection signal indicating that a short circuit state of the capacitance element has been detected.