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. 11, 2007
Filed:
Apr. 21, 2006
Koji Kohara, Yokohama, JP;
Koji Kohara, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A first fuse element, a second fuse element, a read trim value automatic adjustment circuit, and a fuse data read circuit are provided. The second fuse element determines a data reading condition for the first fuse element. The read trim value automatic adjustment circuit applies a constant voltage across the second fuse element prior to reading data from the first fuse element, then reads data from the second fuse element and, on the basis of the results of the read, outputs a trim value to specify the desired read condition for the first fuse element. The fuse data read circuit applies a constant voltage across the first fuse element and then reads data from it according to the read timing or the read reference voltage set on the basis of the trim value output from the read trim value automatic adjustment circuit.