Invention Grant
- Patent Title: Nonvolatile semiconductor memory device
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Application No.: US14512940Application Date: 2014-10-13
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Publication No.: US09437307B2Publication Date: 2016-09-06
- Inventor: Kiyotaro Itagaki , Masaru Kito , Ryu Ogiwara , Hitoshi Iwai
- 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: JP2010-212861 20100922
- Main IPC: G11C16/04
- IPC: G11C16/04 ; G11C16/14 ; G11C16/12 ; G11C16/30 ; G11C16/16 ; H01L27/115 ; G11C16/10 ; G11C16/34

Abstract:
A control circuit is configured to execute an erasing operation on a selected cell unit in a selected memory block. In the erasing operation, the control circuit raises the voltage of the bodies of the first memory transistors included in the selected cell unit to a first voltage, sets the voltage of the bodies of the first memory transistors included in the non-selected cell unit to a second voltage lower than the first voltage, and applies a third voltage equal to or lower than the second voltage to the gates of the first memory transistors included in the selected cell unit and the non-selected cell unit.
Public/Granted literature
- US20150029791A1 NONVOLATILE SEMICONDUCTOR MEMORY DEVICE Public/Granted day:2015-01-29
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