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. 18, 1999
Filed:
Aug. 01, 1997
Applicant:
Inventors:
Rudiger Brede, Hoehenkirchen, DE;
Dominique Savignac, Ismaning, DE;
Norbert Wirth, Unterschleissheim, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365222 ; 3652257 ; 365200 ; 365 96 ; 327525 ;
Abstract
The fuse refresh circuit for semiconductor memories has a set circuit for setting a fuse latch circuit. The fuse latch circuit is set by the set circuit in at least one refresh cycle after a voltage supply has been switched on. During the refresh cycle of the fuse latch circuit, the latter is driven with pulses in such a way that the state of the fuse latch circuit is evaluated and only an incorrectly set fuse latch circuit is set to be correct.