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. 19, 2021
Filed:
Mar. 19, 2020
Applicant:
Sandisk Technologies Llc, Addison, TX (US);
Inventors:
Siddarth Naga Murty Bassa, San Jose, CA (US);
Yenlung Li, San Jose, CA (US);
Assignee:
SanDisk Technologies LLC, Addison, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 29/00 (2006.01); G11C 29/44 (2006.01); G11C 29/24 (2006.01);
U.S. Cl.
CPC ...
G11C 29/76 (2013.01); G11C 29/24 (2013.01); G11C 29/44 (2013.01); G11C 29/785 (2013.01);
Abstract
An apparatus includes nonvolatile memory cells arranged in columns including a plurality of redundant columns with control circuits coupled to the nonvolatile memory cells. The control circuits are configured to maintain an ordered list of bad columns replaced by redundant columns. The control circuits are configured to detect an out-of-order entry in the ordered list of bad columns replaced by redundant columns.