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:
May. 02, 2017

Filed:

Aug. 02, 2016
Applicant:

Shanghai Huahong Grace Semiconductor Manufacturing Corporation, Shanghai, CN;

Inventor:

Guangjun Yang, Shanghai, CN;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/04 (2006.01); G11C 11/56 (2006.01); G11C 16/26 (2006.01); G11C 16/12 (2006.01); H01L 27/11521 (2017.01);
U.S. Cl.
CPC ...
G11C 11/5628 (2013.01); G11C 11/5635 (2013.01); G11C 11/5642 (2013.01); G11C 16/0425 (2013.01); G11C 16/12 (2013.01); G11C 16/26 (2013.01); H01L 27/11521 (2013.01);
Abstract

Method of operating flash memory unit is provided. Flash memory unit includes first and second split-gate flash memory units, source and drain of first split-gate flash memory unit are connected with first and third bit lines respectively, source and drain of second split-gate flash memory unit is connected with second and third bit line respectively, first control gates of two split-gate flash memory units are connected with first control gate line, second control gates of two split-gate flash memory units are connected with second control gate line, word line gates of two split-gate flash memory units are connected with word line, method includes configuring voltages to first and third bit lines, word line, first and second control gate lines to select first storage bit in first split-gate flash memory unit and make first storage bit in to-be-read or to-be-programmed state; suspending second bit line; reading or programming first storage bit.


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