Title:
SEMICONDUCTOR RECORDING DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/135984
Kind Code:
A1
Abstract:
The disclosed semiconductor recording device achieves multi-valued reading and writing using a spin-injection magnetization-reversal tunneling magnetoresistive element (TMR element). A first current that has at least the same value as that of the element requiring the highest current to reverse the magnetization thereof among a plurality of TMR elements is, in the direction that causes reversal to either a parallel state or an anti-parallel state, applied to a memory cell having the plurality of TMR elements, and then a second current which is in the reverse direction from the first current and of which only the value needed to reverse the magnetoresistance state of at least one TMR element excluding the element requiring the maximum current among the plurality of TMR elements is applied to each, and multi-valued writing is performed.
More Like This:
| JP3906212 | MAGNETIC RANDOM ACCESS MEMORY |
| WO/2011/055420 | SEMICONDUCTOR DEVICE |
| JP2004030822 | MEMORY APPARATUS USING RESISTIVE ELEMENT, AND ITS MANUFACTURING METHOD |
Inventors:
KAWAHARA, Takayuki (HITACHI LTD., 280, Higashikoigakubo 1-chome, Kokubunji-sh, Tokyo 01, 〒1858601, JP)
河原 尊之 (〒01 東京都国分寺市東恋ヶ窪一丁目２８０番地 株式会社日立製作所 中央研究所内 Tokyo, 〒1858601, JP)
TAKEMURA, Riichiro (HITACHI LTD., 280, Higashikoigakubo 1-chome, Kokubunji-sh, Tokyo 01, 〒1858601, JP)
竹村 理一郎 (〒01 東京都国分寺市東恋ヶ窪一丁目２８０番地 株式会社日立製作所 中央研究所内 Tokyo, 〒1858601, JP)
河原 尊之 (〒01 東京都国分寺市東恋ヶ窪一丁目２８０番地 株式会社日立製作所 中央研究所内 Tokyo, 〒1858601, JP)
TAKEMURA, Riichiro (HITACHI LTD., 280, Higashikoigakubo 1-chome, Kokubunji-sh, Tokyo 01, 〒1858601, JP)
竹村 理一郎 (〒01 東京都国分寺市東恋ヶ窪一丁目２８０番地 株式会社日立製作所 中央研究所内 Tokyo, 〒1858601, JP)
Application Number:
JP2011/058615
Publication Date:
November 03, 2011
Filing Date:
April 05, 2011
Export Citation:
Assignee:
HITACHI, LTD. (6-6 Marunouchi 1-chome, Chiyoda-ku Tokyo, 80, 〒1008280, JP)
株式会社日立製作所 (〒80 東京都千代田区丸の内一丁目６番６号 Tokyo, 〒1008280, JP)
KAWAHARA, Takayuki (HITACHI LTD., 280, Higashikoigakubo 1-chome, Kokubunji-sh, Tokyo 01, 〒1858601, JP)
河原 尊之 (〒01 東京都国分寺市東恋ヶ窪一丁目２８０番地 株式会社日立製作所 中央研究所内 Tokyo, 〒1858601, JP)
TAKEMURA, Riichiro (HITACHI LTD., 280, Higashikoigakubo 1-chome, Kokubunji-sh, Tokyo 01, 〒1858601, JP)
株式会社日立製作所 (〒80 東京都千代田区丸の内一丁目６番６号 Tokyo, 〒1008280, JP)
KAWAHARA, Takayuki (HITACHI LTD., 280, Higashikoigakubo 1-chome, Kokubunji-sh, Tokyo 01, 〒1858601, JP)
河原 尊之 (〒01 東京都国分寺市東恋ヶ窪一丁目２８０番地 株式会社日立製作所 中央研究所内 Tokyo, 〒1858601, JP)
TAKEMURA, Riichiro (HITACHI LTD., 280, Higashikoigakubo 1-chome, Kokubunji-sh, Tokyo 01, 〒1858601, JP)
International Classes:
G11C11/15; H01L21/8246; H01L27/105; H01L43/08
Attorney, Agent or Firm:
TSUTSUI, Yamato (Tsutsui & Associates, 3F Shinjuku Gyoen Bldg.,,3-10, Shinjuku 2-chome, Shinjuku-ku, Tokyo 22, 〒1600022, JP)
Download PDF:
Claims:
Previous Patent: PORTABLE IMAGE FORMING DEVICE
Next Patent: LAMINATED POLYESTER FILM AS PROTECTIVE MATERIAL FOR REAR SURFACE OF SOLAR CELL
Next Patent: LAMINATED POLYESTER FILM AS PROTECTIVE MATERIAL FOR REAR SURFACE OF SOLAR CELL