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:
Nov. 15, 2005
Filed:
Jun. 24, 2002
Dhrumil Gandhi, Cupertino, CA (US);
Dhrumil Gandhi, Cupertino, CA (US);
Artisan Components, Inc., Sunnyvale, CA (US);
Abstract
A column redundancy circuitry and a method for implementing the same are provided. One exemplary method provides routing for an access request addressed to a defective cell. The method includes providing a redundant column within a memory circuit, the redundant column in communication with a sense amplifier. Next, a defective cell of a memory circuit is located and the address is programmed. An access request is then processed, the access request containing the address of the defective cell Finally, the access request is routed to the redundant column through enable circuitry. Some notable advantages include the conservation of surface area of the memory circuit induced by locating the redundant column within the memory circuit. The externalization of the fuse box, Built In Self Repair region and the logic circuitry from the memory core also provide increased flexibility.