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.

Date of Patent:
Jan. 24, 2023

Filed:

Dec. 12, 2019
Applicant:

Sandisk Technologies Llc, Addison, TX (US);

Inventors:

Masakazu Ehama, Sagamihara, JP;

Hiroyuki Mizukoshi, Kawasaki, JP;

Yan Li, Milpitas, CA (US);

Assignee:

SanDisk Technologies LLC, Addison, TX (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 11/36 (2006.01); G11C 16/30 (2006.01); G06F 9/26 (2006.01); G06F 9/24 (2006.01); G06F 9/22 (2006.01);
U.S. Cl.
CPC ...
G06F 11/3648 (2013.01); G06F 9/226 (2013.01); G06F 9/24 (2013.01); G06F 9/261 (2013.01); G11C 16/30 (2013.01);
Abstract

A 3D NAND memory device is provided in which control is performed by two microcontroller units (MCU). During manufacture of the memory device, bug fixes required for the controller may be addressed using a software solution by which an instruction requiring correction in one of the two MCUs is replaced with a corrected instruction stored in a RAM.


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