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:
Feb. 12, 2008
Filed:
Nov. 07, 2005
Reidar Lindstedt, Ottobrunn, DE;
Dirk Fuhrmann, Apex, NC (US);
Reidar Lindstedt, Ottobrunn, DE;
Dirk Fuhrmann, Apex, NC (US);
Infineon Technologies, AG, Neubiberg, DE;
Abstract
An integrated semiconductor memory device includes a sense amplifier that is connected to a first bit line via a first output connection and is connected to a second bit line via a second output connection. A memory cell to store a first or a second memory state is connected to the first bit line. When writing/reading the first memory state, the sense amplifier produces a negative voltage at the first output connection and a positive voltage at the second output connection, and when writing/reading the second memory state, it produces the positive voltage at the first output connection and the negative voltage at the second output connection. The production of a negative voltage results in one of the two bit lines being charged approximately to a ground potential during a read or write access.