Invention Grant
- Patent Title: Multi-level resistance change memory
- Patent Title (中): 多级电阻变化记忆
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Application No.: US13053677Application Date: 2011-03-22
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Publication No.: US08456890B2Publication Date: 2013-06-04
- Inventor: Reika Ichihara
- Applicant: Reika Ichihara
- 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: JP2010-207178 20100915
- Main IPC: G11C11/00
- IPC: G11C11/00

Abstract:
According to one embodiment, a multi-level resistance change memory includes a memory cell includes first and second resistance change films connected in series, and a capacitor connected in parallel to the first resistance change film, a voltage pulse generating circuit generating a first voltage pulse with a first pulse width to divide a voltage of the first voltage pulse into the first and second resistance change films based on a resistance ratio thereof, and generating a second voltage pulse with a second pulse width shorter than the first pulse width to apply a voltage of the second voltage pulse to the second resistance change film by a transient response of the capacitor, and a control circuit which is stored multi-level data to the memory cell by using the first and second voltage pulses in a writing.
Public/Granted literature
- US20120063193A1 MULTI-LEVEL RESISTANCE CHANGE MEMORY Public/Granted day:2012-03-15
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