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:
Aug. 24, 2004
Filed:
Sep. 19, 2002
Applicant:
Inventors:
Jörg Kliewer, München, DE;
Rupert Lukas, Lörrach-Hauingen, DE;
Manfred Pröll, Dorfen, DE;
Stephan Schröder, München, DE;
Assignee:
Infineon Technologies AG, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 1/604 ;
U.S. Cl.
CPC ...
G11C 1/604 ;
Abstract
An additional test mode is introduced in a semiconductor memory. A multiplicity of word lines are simultaneously activated by a word line decoder in the test mode. After a potential equalization of complementary bit lines, a logic “0” or a logic “1” is applied to an equalization circuit via a voltage generator. It is thus possible for the entire memory cell array to be preallocated an identical data value or, in strip form, alternating data values. Test time is thereby saved.