Invention Grant
- Patent Title: Non-volatile semiconductor memory device with a resistance adjusting circuit and an operation method thereof
- Patent Title (中): 具有电阻调节电路的非易失性半导体存储器件及其操作方法
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Application No.: US13051703Application Date: 2011-03-18
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Publication No.: US08625326B2Publication Date: 2014-01-07
- Inventor: Koji Hosono
- Applicant: Koji Hosono
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2010-068817 20100324
- Main IPC: G11C11/00
- IPC: G11C11/00

Abstract:
A semiconductor memory device in accordance with an embodiment includes a memory cell array having memory cells disposed at an intersection of first lines and second lines; and a control circuit configured to execute a read operation, thereby determining a resistance state of the selected one of the memory cells. The read operation is an operation configured to execute a sensing operation multiple times and aggregate determination results thereof. The sensing operation is configured such that a first voltage is applied to selected ones of the first lines and a second voltage lower than the first voltage is applied to a single selected one of the second lines. The control circuit suspends application of the first voltage to the first line connected to the selected one of the memory cells determined to be in a first resistance state in one of the sensing operations, and executes the next sensing operation.
Public/Granted literature
- US20110235398A1 SEMICONDUCTOR MEMORY DEVICE AND OPERATION METHOD THEREOF Public/Granted day:2011-09-29
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