Invention Grant
- Patent Title: Semiconductor memory device
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Application No.: US15258150Application Date: 2016-09-07
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Publication No.: US09824764B2Publication Date: 2017-11-21
- Inventor: Yuki Kanamori , Yuji Nagai , Jun Nakai , Kenri Nakai
- Applicant: Toshiba Memory Corporation
- Applicant Address: JP Minato-ku
- Assignee: TOSHIBA MEMORY CORPORATION
- Current Assignee: TOSHIBA MEMORY CORPORATION
- Current Assignee Address: JP Minato-ku
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Main IPC: G11C16/04
- IPC: G11C16/04 ; G11C16/12 ; G11C16/34

Abstract:
A semiconductor memory device according to an embodiment includes: a memory cell array including a plurality of memory cells that are NAND-connected; and a control circuit that executes a write sequence, the write sequence writing data to the memory cells, the write sequence including a plurality of write stages, one of the write stages applying to the memory cells a plurality of program pulses whose amplitudes increase by a certain increment, the write stages including 1st to Nth, where N is an integer of 2 or more, write stages, and an initial amplitude and the increment of the program pulse applied in the N−1th write stage being the same as an initial amplitude and the increment of the program pulse applied in the Nth write stage.
Public/Granted literature
- US20170271017A1 SEMICONDUCTOR MEMORY DEVICE Public/Granted day:2017-09-21
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