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:
Jan. 10, 2006
Filed:
Apr. 23, 2004
Peter Beer, Fontainbleau, FR;
Peter Beer, Fontainbleau, FR;
Infineon Technologies AG, Munich, DE;
Abstract
An integrated memory circuit having a redundancy circuit for replacing a memory area having an address by a redundant memory area assigned to the redundancy circuit and method for replacing a memory area. In one embodiment, the redundancy circuit comprises one or more fuse storage elements in which the address of the memory area which is to be replaced by the redundant memory area can be set, wherein, for the purpose of setting the address, each of the fuse storage elements may be set to a first state by the respective fuse storage element being left unchanged and set to a second state by the respective fuse storage element being permanently changed, an activation fuse storage element for activating the address stored in the fuse storage elements for replacing the memory area with the redundant memory area, and a deactivation storage element for permitting or preventing replacement of the memory area having the address by the redundant memory area, wherein the deactivation storage element is connected to the fuse storage elements in such a way as to prevent replacement of the memory area if each of the fuse storage elements has been permanently changed and set to the second state.