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:
Aug. 18, 2020
Filed:
Aug. 20, 2019
Renesas Electronics Corporation, Tokyo, JP;
Yasunori Kubota, Tokyo, JP;
RENESAS ELECTRONICS CORPORATION, Tokyo, JP;
Abstract
A semiconductor device includes a first oscillator circuit, a clock monitoring circuit and a timing signal generation circuit for periodically switching the operating mode of the clock monitoring circuit to one of the first to third modes. The clock monitoring circuit includes: a clock counter configured for counting the number of oscillations of the clock signal in the first mode and configured for shifting the pulses of the input signal to the output signal at normal time in the third mode; a comparison circuit for comparing whether the count value per predetermined period by the clock counter is within an expected value in the second mode; and an edge detection circuit for detecting whether the pulses of the input signal are shifted to the output signal of the clock counter in the third mode.