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:
Oct. 11, 2011
Filed:
Aug. 05, 2009
Yoshihiro Ueda, Yokohama, JP;
Kenji Tsuchida, Kawasaki, JP;
Kiyotaro Itagaki, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A resistive memory includes a plurality of memory cells, a plurality of reference cells having mutually different resistance values, at least one sense amplifier having a first input terminal connected to one selected memory cell which is selected from the plurality of memory cells at a time of read, and a second input terminal connected to one selected reference cell which is selected from the plurality of reference cells at the time of read, and one latch circuit which holds offset information of the at least one sense amplifier. The resistive memory further includes a decoder which selects, in accordance with the offset information, the one selected reference cell from the plurality of reference cells, and connects the one selected reference cell to the second input terminal of the at least one sense amplifier.