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| Presentation | 2015-01-27 14:50 [Invited Talk] Low power and high memory density STT-MRAM for embedded cache memory using advanced perpendicular MTJ integrations and asymmetric compensation techniques Kazutaka Ikegami, Hiroki Noguchi, Chikayoshi Kamata, Minoru Amano, Keiko Abe, Keiichi Kushida, Takao Ochiai, Naoharu Shimomura, Shogo Itai, Daisuke Saida, Chika Tanaka, Atsushi Kawasumi, Hiroyuki Hara, Junichi Ito, Shinobu Fujita (Toshiba)  SDM2014-142 Link to ES Tech. Rep. Archives: SDM2014-142 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Due to difficulty to increase clock frequency, recent processors increase cache memory to improve performance. However, leakage current and large cell size of SRAM is known to be issues. To reduce power and area simultaneously, magnetic tunneling junction (MTJ) based cache memory is considered promising. There are two issues for realizing MTJ based cache memory, one is large write current of MTJ and the other is integration with logic CMOS. In this paper, we develop three technologies to resolve these issues, low power advanced-MTJ development, low temperature integration technology and asymmetric compensation technology which utilize asymmetry of cache data. By proposed technology, cache power can be reduced 60% with only 7% performance overhead. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | MTJ / MRAM / STT-MRAM / cache memory / normally-off computing / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 114, no. 421, SDM2014-142, pp. 29-32, Jan. 2015. | |
| Paper # | SDM2014-142 | |
| Date of Issue | 2015-01-20 (SDM) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | SDM2014-142 Link to ES Tech. Rep. Archives: SDM2014-142 |
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| Conference Information | |
| Committee | SDM |
| Conference Date | 2015-01-27 - 2015-01-27 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | SDM |
| Conference Code | 2015-01-SDM |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Low power and high memory density STT-MRAM for embedded cache memory using advanced perpendicular MTJ integrations and asymmetric compensation techniques |
| Sub Title (in English) | |
| Keyword(1) | MTJ |
| Keyword(2) | MRAM |
| Keyword(3) | STT-MRAM |
| Keyword(4) | cache memory |
| Keyword(5) | normally-off computing |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Kazutaka Ikegami |
| 1st Author's Affiliation | Toshiba Corporation (Toshiba) |
| 2nd Author's Name | Hiroki Noguchi |
| 2nd Author's Affiliation | Toshiba Corporation (Toshiba) |
| 3rd Author's Name | Chikayoshi Kamata |
| 3rd Author's Affiliation | Toshiba Corporation (Toshiba) |
| 4th Author's Name | Minoru Amano |
| 4th Author's Affiliation | Toshiba Corporation (Toshiba) |
| 5th Author's Name | Keiko Abe |
| 5th Author's Affiliation | Toshiba Corporation (Toshiba) |
| 6th Author's Name | Keiichi Kushida |
| 6th Author's Affiliation | Toshiba Corporation (Toshiba) |
| 7th Author's Name | Takao Ochiai |
| 7th Author's Affiliation | Toshiba Corporation (Toshiba) |
| 8th Author's Name | Naoharu Shimomura |
| 8th Author's Affiliation | Toshiba Corporation (Toshiba) |
| 9th Author's Name | Shogo Itai |
| 9th Author's Affiliation | Toshiba Corporation (Toshiba) |
| 10th Author's Name | Daisuke Saida |
| 10th Author's Affiliation | Toshiba Corporation (Toshiba) |
| 11th Author's Name | Chika Tanaka |
| 11th Author's Affiliation | Toshiba Corporation (Toshiba) |
| 12th Author's Name | Atsushi Kawasumi |
| 12th Author's Affiliation | Toshiba Corporation (Toshiba) |
| 13th Author's Name | Hiroyuki Hara |
| 13th Author's Affiliation | Toshiba Corporation (Toshiba) |
| 14th Author's Name | Junichi Ito |
| 14th Author's Affiliation | Toshiba Corporation (Toshiba) |
| 15th Author's Name | Shinobu Fujita |
| 15th Author's Affiliation | Toshiba Corporation (Toshiba) |
| 16th Author's Name | |
| 16th Author's Affiliation | () |
| 17th Author's Name | |
| 17th Author's Affiliation | () |
| 18th Author's Name | |
| 18th Author's Affiliation | () |
| Speaker | Author-1 |
| Date Time | 2015-01-27 14:50:00 |
| Presentation Time | 25 minutes |
| Registration for | SDM |
| Paper # | SDM2014-142 |
| Volume (vol) | vol.114 |
| Number (no) | no.421 |
| Page | pp.29-32 |
| #Pages | 4 |
| Date of Issue | 2015-01-20 (SDM) |
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