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:
Sep. 24, 2013
Filed:
Sep. 12, 2011
Makoto Hamada, San Jose, CA (US);
Makoto Hamada, San Jose, CA (US);
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a semiconductor storage device includes first cells, first bit and first word, and first sense. The first cells are capable of holding 2-level or higher-level data. The first bit and first word are capable of selecting the first cells. The first sense detects a first current. The first sense includes a first supply unit, a first accumulation unit, a detector, and a counter. The first supply unit supplies a second current when the data is read. The first accumulation unit accumulates an amount of charge. The detector detects the potential the amount of charge. The counter counts output from the detector. The counter includes a second supply unit, a second accumulation unit, and a sensing unit. The second supply unit charges a first node. The second accumulation unit accumulates a charge. The sensing unit detects the amount of charge of the second accumulation unit.