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. 22, 2023
Filed:
Mar. 08, 2019
Rohm Co., Ltd., Kyoto, JP;
Naoki Matsumoto, Kyoto, JP;
ROHM CO., LTD., Kyoto, JP;
Abstract
A semiconductor deviceincludes: a first external terminalto which a first voltage is to be applied; a second external terminalto which a second voltage is to be applied; a third external terminal; first wiringconnected to the first external terminal; second wiringconnected to the second external terminal; an internal block circuitconnected to the first wiring; a first resistorand a transistorserially connected between the first wiringand the second wiring; and a second resistorconnected between the first wiringand the second wiring. The transistorturns on or off based on a test signal fed from the third external terminal. This configuration enables product identification using a resistance value, even if a predetermined resistance value cannot be changed.