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. 16, 2025
Filed:
Feb. 22, 2024
Applicant:
Socionext Inc., Kanagawa, JP;
Inventor:
Hideo Akiyoshi, Yokohama, JP;
Assignee:
Socionext Inc., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 29/50 (2006.01); G11C 11/412 (2006.01); H10B 10/00 (2023.01);
U.S. Cl.
CPC ...
G11C 29/50 (2013.01); G11C 11/412 (2013.01); H10B 10/12 (2023.02); G11C 2029/5002 (2013.01);
Abstract
A semiconductor integrated circuit device includes a ring oscillator having a plurality of stages of delay circuits. In each of the delay circuits, when the signal at the input terminal makes a first transition, the signal at the output terminal transitions in response to the operation of a first transistor that corresponds to a transistor in an SRAM cell. When the signal at the input terminal makes a second transition, the first transistor is electrically isolated from the output terminal, and the signal at the output terminal transitions in response to the operation of a second transistor.