Title:
WRITING METHOD OF NONVOLATILE SEMICONDUCTOR STORAGE APPARATUS
Document Type and Number:
WIPO Patent Application WO/2008/029446
Kind Code:
A1
Abstract:
A nonvolatile semiconductor storage apparatus comprises a resistance memorizing
element (14) that memorizes high and low resistive states and switches them in
response to an application of a voltage; a transistor (12) that has its drain terminal
connected to an end of the resistance memorizing element (14) and its source terminal
connected to a reference voltage; and a transistor (16) that has its source terminal
connected to the other end of the resistance memorizing element (14). In the
nonvolatile semiconductor storage apparatus, when a write voltage is applied
to the resistance memorizing element (14) via the transistor (16) so as to cause
the resistance memorizing element (14) to switch from its low resistive state
to its high resistive state, the voltage to be applied to the gate terminal of the
transistor (16) is established such that it is equal to or greater than a sum of
a reset voltage of the resistance memorizing element (14) and the threshold voltage
of the transistor (16) but smaller than a sum of a set voltage of the resistance
memorizing element (14) and that threshold voltage, thereby controlling the
voltage to be applied to the resistance memorizing element (14) such that it is
equal to or greater than the reset voltage but smaller than the set voltage of the
resistance memorizing element (14).
Inventors:
AOKI, Masaki (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 2118588, JP)
Application Number:
JP2006/317529
Publication Date:
March 13, 2008
Filing Date:
September 05, 2006
Export Citation:
Assignee:
FUJITSU LIMITED (1-1 Kamikodanaka 4-chome, Nakahara-ku Kawasaki-sh, Kanagawa 88, 2118588, JP)
富士通株式会社 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 Kanagawa, 2118588, JP)
富士通株式会社 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 Kanagawa, 2118588, JP)
International Classes:
G11C13/00; H01L27/10
Attorney, Agent or Firm:
KITANO, Yoshihito (Exceed Yotsuya 2nd Floor 9, Daikyo-cho Shinjuku-k, Tokyo 15, 1600015, JP)
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