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:
Jan. 05, 2021
Filed:
Sep. 13, 2016
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Yoshimitsu Yanagawa, Tokyo, JP;
Masahiro Matsumoto, Tokyo, JP;
Hiroshi Nakano, Tokyo, JP;
Akira Kotabe, HItachinaka, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Abstract
Even when a positive/negative surge is applied to a power-supply line, occurrence of malfunction in a semiconductor device is lessened. In an in-vehicle semiconductor device, regulators convert an externally-supplied voltage to generate voltages. A voltage monitoring unit includes a voltage monitoring circuit and a switch, and monitors first to third voltages. An internal circuit has a processor operated by the voltage, and an oscillator operated by the voltage and generating a clock signal to be provided the processor. The voltage monitoring unit stops providing the clock signal to the processor when the voltage level of at least any one of the first to third voltages is below a set value. The voltage monitoring unit provides the clock signal to the processor when the voltage levels of all the first to third voltages exceed the set value.