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:
Mar. 02, 2004
Filed:
Apr. 08, 2002
Binh Quang Le, San Jose, CA (US);
Michael Chung, San Jose, CA (US);
Pau-Ling Chen, Saratoga, CA (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A flash memory array having multiple dual bit memory cells divided into section attached to a wordline and a pair of reference cells logically associated with each section. A method of reprogramming a section or sections of words that are required to be changed includes inputting allowed changes to the flash memory array, reading word or words to be changed in each section, programming bits in word or words to be changed in each section, refreshing previously programmed bits in the word or words that are changed, refreshing previously programmed bits in the word or words changed in each section, refreshing previously programmed bits in the remaining word or words in each section and refreshing previously programmed in each pair of reference cells in the section in which changes have been made.