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:
May. 23, 2006
Filed:
Jul. 16, 2004
Hiroshi Maejima, Chigasaki, JP;
Takahiko Hara, Yokohama, JP;
Hiroshi Maejima, Chigasaki, JP;
Takahiko Hara, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A non-volatile semiconductor memory device includes a cell array in which electrically rewritable and non-volatile memory cells are arranged, and a sense amplifier circuit configured to read and write data in association with the cell array, wherein the sense amplifier circuit includes: differential amplifier having first and second input nodes and configured to amplify a difference voltage between the first and second input nodes; a data transfer circuit configured to selectively connect the first input node to a bit line in the cell array; a reference voltage setting circuit configured to apply a reference voltage to the second input node of the differential amplifier; and a data storing circuit configured to temporarily hold a loaded write data at the first input node of the differential amplifier, and control the reference voltage at the second input node of the differential amplifier in correspondence with the write data held therein.