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:
Feb. 03, 2026

Filed:

Jun. 09, 2021
Applicant:

Sandisk Technologies, Inc., Milpitas, CA (US);

Inventors:

Parth Amin, Fremont, CA (US);

Anubhav Khandelwal, San Jose, CA (US);

Assignee:

Sandisk Technologies, Inc., Milpitas, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/04 (2006.01); G11C 11/56 (2006.01); G11C 16/08 (2006.01); G11C 16/10 (2006.01); G11C 16/34 (2006.01); H10B 41/35 (2023.01);
U.S. Cl.
CPC ...
G11C 16/10 (2013.01); G11C 11/5628 (2013.01); G11C 16/0483 (2013.01); G11C 16/08 (2013.01); G11C 16/3459 (2013.01); G11C 11/5671 (2013.01); H10B 41/35 (2023.02);
Abstract

A memory apparatus and method of operation are provided. The apparatus includes memory cells connected to word lines and arranged in strings and configured to retain a threshold voltage corresponding to memory states. A control circuit is configured to program the memory cells to reach one of a plurality of verify levels each corresponding the memory states using a series of voltage pulses applied to the word lines during a program operation. The control circuit determines an intermediate quantity of the series of voltage pulses necessary for the memory cells associated with a selected one of the memory states to reach the one of the plurality of verify levels corresponding to the selected one of the memory states. The control circuit ends the program operation after a maximum allowable quantity of the series of voltage pulses are utilized. The maximum allowable quantity is selected based on the intermediate quantity.


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