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:
Nov. 19, 2019

Filed:

Nov. 22, 2018
Applicant:

Wuhan Xinxin Semiconductor Manufacturing Co., Ltd., Wuhan, Hubei Province, CN;

Inventors:

Yuan Tang, San Jose, CA (US);

Jen-Tai Hsu, San Jose, CA (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/04 (2006.01); G11C 16/08 (2006.01); G11C 16/30 (2006.01); G11C 16/14 (2006.01);
U.S. Cl.
CPC ...
G11C 16/08 (2013.01); G11C 16/14 (2013.01); G11C 16/30 (2013.01);
Abstract

A local X-decoder for a memory system includes a decoding unit configured to generate a word line signal to a memory cell of a memory array of the memory system; and an unselected erase detecting unit coupled to the decoding unit, and configured to increase an absolute voltage coupled to the word line signal from a well of the memory cell according to an unselected erase mode signal generated by an erase mode decoder of the memory system; wherein the word line signal is floating to a same level as the well of the memory cell when the memory cell is unselected in an erase mode of the memory system.


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