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. 23, 2022
Filed:
Feb. 26, 2020
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Yasuhiro Katayama, Fujisawa Kanagawa, JP;
Daisuke Katori, Kawasaki Kanagawa, JP;
Tatsuo Inoue, Tokyo, JP;
Michitomo Yamaguchi, Kawasaki Kanagawa, JP;
Naoki Oshima, Yokohama Kanagawa, JP;
Shogo Masuda, Kawasaki Kanagawa, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION, Tokyo, JP;
Abstract
A semiconductor device comprises a central processing device, a first logical circuit, and a serial memory interface circuit. The first logical circuit has a first scan chain in which a first scan pattern is set, is configured to suppress a leakage current when the first scan pattern for power saving is set in the first scan chain. The serial memory interface circuit is configured to acquire the first scan pattern for power saving from an external storage device. The leakage current of the first logical circuit is suppressed by transferring the first scan pattern for power saving acquired by the serial memory interface circuit to the first logical circuit and setting the first scan pattern for power saving in the first scan chain under control of the central processing device.