Y. Yamagata, H. Shirai, H. Sugimura, S. Arai, T. Wake, Ken Inoue, T. Sakoh, M. Sakao, T. Tanigawa
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引用次数: 5
Abstract
This paper presents embedded DRAM device technology utilizing stacked MIM(metal-insulator-metal) capacitor. Targeted for high random-access performance as well as low-power data-streaming applications, original structure named "full metal DRAM" has been devised and implemented from 150nm generation. This features reduced parasitic resistance of DRAM cell and fully-compatible CMOS Trs. characteristics with that of leading-edge CMOS. In 90nm generation, ZrO 2 is introduced as capacitor dielectric material for cell size reduction. For the next generation of 55nm, high-k gate dielectric(HfSiON) will be introduced in CMOS platform, which can be effectively exploited for embedded DRAM scaling and performance improvement
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