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. 14, 2025
Filed:
May. 10, 2022
Applicant:
Sandisk Technologies Llc, Addison, TX (US);
Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/00 (2006.01); G11C 16/08 (2006.01); G11C 16/16 (2006.01); G11C 16/26 (2006.01); G11C 16/34 (2006.01);
U.S. Cl.
CPC ...
G11C 16/3445 (2013.01); G11C 16/08 (2013.01); G11C 16/16 (2013.01); G11C 16/26 (2013.01); G11C 16/3495 (2013.01);
Abstract
An apparatus disclosed herein comprises: a plurality of memory cells and a control circuit coupled to the plurality of memory cells. The control circuit is configured to: erase a block; verify, using a first erase verify level, that the block was properly erased; verify, using a second erase verify level, that the block was properly erased; determine whether there are any mismatches in a plurality of verify statuses between neighboring wordlines of the block from verifying the block using the second erase verify level; and identify, based on the determination, whether the block has failed.