Technical report of IEICE. ICD最新文献

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STT MRAM Development and Its Integration with BEOL Process for Embedded Applications 嵌入式应用的STT MRAM开发及其与BEOL工艺的集成
Technical report of IEICE. ICD Pub Date : 2012-06-04 DOI: 10.1149/ma2012-02/37/2814
T. Sugii, Y. Iba, M. Aoki, H. Noshiro, K. Tsunoda, A. Hatada, M. Nakabayashi, Y. Yamazaki, A. Takahashi, C. Yoshida
{"title":"STT MRAM Development and Its Integration with BEOL Process for Embedded Applications","authors":"T. Sugii, Y. Iba, M. Aoki, H. Noshiro, K. Tsunoda, A. Hatada, M. Nakabayashi, Y. Yamazaki, A. Takahashi, C. Yoshida","doi":"10.1149/ma2012-02/37/2814","DOIUrl":"https://doi.org/10.1149/ma2012-02/37/2814","url":null,"abstract":"Introduction In this paper, we report the current status of our spintransfer torque magnetic RAM (STT-MRAM) development and its integration with the BEOL process for embedded applications with 300-mm facilities. Our STT-MRAM technology for low power dissipation features a top-pinned magnetic tunnel junction (MTJ), strain-engineering, and a naturally oxidized MgO barrier. Our integration technology features highly selective etching with triple-level resist, Ta hard mask, and a selfaligned contact process. We integrated our MRAM into 300-mm BEOL, where the MTJ is integrated between Cu interconnects. These features are described below.","PeriodicalId":440382,"journal":{"name":"Technical report of IEICE. ICD","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120888268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A Complementary Half-Swing Bus Architecture and its Application for Wide Band SRAM Macro 一种互补半摆总线结构及其在宽带SRAM宏中的应用
Technical report of IEICE. ICD Pub Date : 1997-10-16 DOI: 10.1049/IP-CDS:19982269
Y. Nakase, A. Iwabu, Kondo Harufusa, K. Mashiko, Y. Matsuda, T. Tokuda
{"title":"A Complementary Half-Swing Bus Architecture and its Application for Wide Band SRAM Macro","authors":"Y. Nakase, A. Iwabu, Kondo Harufusa, K. Mashiko, Y. Matsuda, T. Tokuda","doi":"10.1049/IP-CDS:19982269","DOIUrl":"https://doi.org/10.1049/IP-CDS:19982269","url":null,"abstract":"A complementary half-swing bus architecture is proposed for high speed and low power operation. The bus is composed of pairs of lines. The bus operates with three steps every cycle. In the first two steps, both bus lines within a pair are set at a half of the supply voltage. In the last step, each bus level is determined independently according to their data whether it is driven to the supply voltage or ground level, or remains unchanged. Then, each bus line swings the upper or lower half of the supply voltage exclusively. This simple architecture is able to transfer data in mutual direction at higher speed without an area penalty. It is applied to an SRAM macro with 112-bit bus for an ATM switch LSI. The 84 K-bit macro is fabricated in an area of 3.5 mm/spl times/4.2 mm with a 0.5 /spl mu/m CMOS process technology. Experimental results indicate that it operates beyond 200 MHz at the supply voltage of 3.3 V. From a cross-talk consideration, the cross-talk works such as to enlarge the operation margin. Simulation results show that the worst case power dissipation and the peak current due to simultaneous switching are reduced by half and by 66%, respectively, compared with full swing architectures.","PeriodicalId":440382,"journal":{"name":"Technical report of IEICE. ICD","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115548791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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