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:
Oct. 07, 2003
Filed:
Jul. 22, 2002
Colin Bill, Cupertino, CA (US);
Ken Cheong Cheah, Penang, MY;
Edward V. Bautista, Jr., Santa Clara, CA (US);
Azrul Halim, Penang, MY;
Darlene G. Hamilton, San Jose, CA (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
In a method and system for repairing defective flash memory cells fabricated on a semiconductor substrate, a repair controller and a plurality of voltage sources are fabricated on the semiconductor substrate. The repair controller controls the voltage sources to apply programming voltages on respective CAM (content addressable memory) flash memory cells in a JUICE state for replacing the defective flash memory cells with a corresponding redundancy element of flash memory cells. In addition, a FAILREP logic is fabricated on the semiconductor substrate for entering a HANG state if no redundancy element of flash memory cells is available or if the defective flash memory cells have been previously repaired.