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. 20, 2013
Filed:
Dec. 11, 2011
Tsuyoshi Koyashiki, Yokohama, JP;
Jun Nagayama, Yokohama, JP;
Masahito Isoda, Yokohama, JP;
Tomoharu Awaya, Yokohama, JP;
Tsuyoshi Koyashiki, Yokohama, JP;
Jun Nagayama, Yokohama, JP;
Masahito Isoda, Yokohama, JP;
Tomoharu Awaya, Yokohama, JP;
Fujitsu Semiconductor Limited, Yokohama, JP;
Abstract
In a semiconductor device and a write control circuit, a voltage detection unit detects a write voltage supplied to a storage element (electrical fuse element) in which only single writing is electrically performed and, when the write voltage is equal to or more than a predetermined threshold voltage, allows the write control unit to stop writing to the electrical fuse element regardless of the write signal. The above processing permits the write control circuit to suppress false writing caused by the fact that abnormality occurs in a write voltage and it becomes an overvoltage.