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:
Jun. 10, 2008
Filed:
Dec. 22, 2006
Applicants:
Sheung-hee Park, Pleasanton, CA (US);
Ming Kwan, San Leandro, CA (US);
Wing Leung, Palo Alto, CA (US);
Inventors:
Sheung-Hee Park, Pleasanton, CA (US);
Ming Kwan, San Leandro, CA (US);
Wing Leung, Palo Alto, CA (US);
Assignee:
Spansion LLC, Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
Erase verify operations as described herein can be utilized for a flash memory device having an array of memory cells. The erase verify operations employ repetitive erase verify testing to double-check previously verified bits that might otherwise relax or settle into an under-erased state. Following an initial erase verify procedure, an erase verify operation may perform a secondary erase verify procedure and apply additional erase pulses to bits that have become under-erased.