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. 29, 2007
Filed:
Apr. 07, 2005
Marcin Gnat, Mering, DE;
Aurel Von Campenhausen, Cluvenhagen, DE;
Joerg Vollrath, Olching, DE;
Ralf Schneider, München, DE;
Marcin Gnat, Mering, DE;
Aurel von Campenhausen, Cluvenhagen, DE;
Joerg Vollrath, Olching, DE;
Ralf Schneider, München, DE;
Infineon Technologies AG, Munich, DE;
Abstract
Integrated semiconductor circuits, in particular, dynamic random access memories include a multiplicity of generator circuits for generating internal voltage levels from an externally applied supply voltage. During testing, the internal voltage levels are altered by the output voltage generated at the output of the generator circuit being adapted to an externally applied test voltage. If the test voltage is outside a tolerance range, the semiconductor circuit maybe destroyed. A protection circuit connected in parallel with the generator circuit limits the output voltage.