Invention Grant
- Patent Title: Nonvolatile semiconductor memory device and data programming method for memory cells
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Application No.: US14199345Application Date: 2014-03-06
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Publication No.: US09697902B2Publication Date: 2017-07-04
- Inventor: Yusuke Umezawa , Shigeru Kinoshita
- Applicant: Kabushiki Kaisha Toshiba
- Applicant Address: JP Minato-ku
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Minato-ku
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2013-173613 20130823
- Main IPC: G11C16/04
- IPC: G11C16/04 ; G11C16/10 ; G11C11/56 ; G11C16/34 ; G11C16/30

Abstract:
According to one embodiment, a nonvolatile semiconductor memory device includes memory cell units, bit lines, word lines, and a controller. Each of the memory cell units includes a plurality of memory cells connected in series. Bit lines are connected respectively to the corresponding memory cell units. Each of the word lines is commonly connected to control gates of the corresponding memory cells of the memory cell units. The controller is configured to control a programming operation of data to the memory cells. The controller is configured to execute a first procedure including programming the data to the memory cell connected to the (4n−3)th (n being a natural number) bit line and the memory cell connected to the (4n−2)th bit line, and a second procedure including programming the data to the memory cell connected to the (4n−1)th bit line and the memory cell connected to the 4nth bit line.
Public/Granted literature
- US20150055416A1 NONVOLATILE SEMICONDUCTOR MEMORY DEVICE AND DATA PROGRAMMING METHOD Public/Granted day:2015-02-26
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