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. 17, 2014
Filed:
Jul. 17, 2012
Masanori Honda, Kanagawa, JP;
Masanori Honda, Kanagawa, JP;
Renesas Electronics Corporation, Kawasaki, Kanagawa, JP;
Abstract
A semiconductor device includes a first oscillator that generates a first clock signal, a second oscillator that generates a second clock signal in response to the first clock signal, a third oscillator that generates a third clock signal, a counter that counts a signal corresponding to the first clock signal or a signal corresponding to the second clock signal during a predetermined period that is set based on the third clock signal to generate an overflow signal indicating that a count value of the signal corresponding to the first clock signal or the signal corresponding to the second clock signal exceeds a predetermined value, and an abnormality notice unit that receives the overflow signal to generate an abnormal signal indicating that an abnormal oscillation occurs in at least one of the first to third clock signals.