Mamoru Fujita
NEC
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Featured researches published by Mamoru Fujita.
international solid-state circuits conference | 1996
Takanori Saeki; Y. Nakaoka; Mamoru Fujita; Akio Tanaka; K. Nagata; K. Sakakibara; Tatsuya Matano; Y. Hoshino; K. Miyano; Satoshi Isa; S. Nakazawa; E. Kakehashi; J.M. Drynan; M. Komuro; T. Fukase; Haruo Iwasaki; M. Takenaka; J. Sekine; M. Igeta; N. Nakanishi; Toshiro Itani; I. Yoshida; K. Yoshino; S. Hashimoto; T. Yoshii; M. Ichinose; T. Imura; M. Uziie; S. Kikuchi; Kuniaki Koyama
A 245.7 mm/sup 2/ 256 Mb SDRAM uses: (1) 60.2% cell-occupancy ratio array, (2) prefetched pipeline using first-in first-out buffer with parallel/serial converter, (3) synchronous mirror delay circuit.
international solid-state circuits conference | 1993
Tadahiko Sugibayashi; Toshio Takeshima; Isao Naritake; T. Matano; Hiroshi Takada; Yoshiharu Aimoto; Koichiro Furuta; Mamoru Fujita; Takanori Saeki; Hiroshi Sugawara; Tatsunori Murotani; Naoki Kasai; Kentaro Shibahara; K. Nakajima; Hiromitsu Hada; Takehiko Hamada; Naoaki Aizaki; T. Kunio; E. Kakehashi; K. Masumori; Takaho Tanigawa
A 256-Mb DRAM with a multidivided array structure has been developed and fabricated with 0.25- mu m CMOS technology. It features 30-ns access time, 16-b I/Os, and a 35-mA operating current at a 60-ns cycle time. Three key circuit technologies were used in its design: a partial cell array activation scheme for reducing power-line voltage bounce and operating current, a selective pull-up data-line architecture to increase I/O width and reduce power dissipation, and a time-sharing refresh scheme to maintain the conventional refresh period without reducing operational margin. Memory cell size was 0.72 mu m/sup 2/. Use of the trench isolated cell transistor and the HSG cylindrical stacked capacitor cells helped reduce chip size to 333 mm/sup 2/. >
Archive | 1993
Tadahiko Sugibayashi; Mamoru Fujita; Isao Naritake
Archive | 1996
Mamoru Fujita
Archive | 1993
Mamoru Fujita
Archive | 1999
Mamoru Fujita
international solid-state circuits conference | 1999
Yasuhiro Takai; Mamoru Fujita; K. Nagata; Satoshi Isa; S. Nakazawa; A. Hirobe; Hiroaki Ohkubo; Masato Sakao; S. Horiba; T. Fukase; Y. Takaishi; M. Matsuo; M. Komuro; T. Uchida; T. Sakoh; K. Saino; S. Uchiyama; Y. Takada; J. Sekine; N. Nakanishi; T. Oikawa; M. Igeta; Hiroshi Tanabe; Hidenobu Miyamoto; Takasuke Hashimoto; Hiroshi Yamaguchi; Kuniaki Koyama; Y. Kobayashi; Takashi Okuda
Archive | 1999
Mamoru Fujita
Archive | 1996
Mamoru Fujita
Archive | 1995
Satoshi Isa; Mamoru Fujita