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Dive into the research topics where Makoto Koga is active.

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Featured researches published by Makoto Koga.


international solid-state circuits conference | 1997

A 256 Mb SDRAM using a register-controlled digital DLL

Atsushi Hatakeyama; Hirohiko Mochizuki; Tadao Aikawa; Masato Takita; Yuki Ishii; Hironobu Tsuboi; Shinya Fujioka; Shusaku Yamaguchi; Makoto Koga; Yuji Serizawa; Koichi Nishimura; Kuninori Kawabata; Yoshinori Okajima; Michiari Kawano; Hideyuki Kojima; Kazuhiro Mizutani; Toru Anezaki; Masatomo Hasegawa; Masao Taguchi

This 256 Mb synchronous DRAM with 1 ns clock access is stable against temperature, voltage, and process variation by use of an innovative register-controlled delay locked loop (RDLL). Unlike most conventional high-density DRAMs, the bit-lines are placed above the storage capacitors in this DRAM to relax design rules of the core area. The noise issues are analyzed and resolved to help implement the technology in mass production of 0.28 to 0.24 /spl mu/m 200 MHz DRAMs.


Archive | 1993

Semiconductor integrated circuit with input/output interface adapted for small-amplitude operation

Masao Taguchi; Satoshi Eto; Yoshihiro Takemae; Hiroshi Yoshioka; Makoto Koga


Archive | 2002

Serial/parallel converter

Makoto Koga; Yoshinori Okajima


Archive | 1997

Semiconductor memory device with an increased band width

Tsuyoshi Higuchi; Makoto Koga; Yoshinori Okajima; Hironobu Tsuboi


Archive | 1998

Semiconductor storage device capable of fast writing operation

Makoto Koga


Archive | 2004

Semiconductor device and method for testing semiconductor device

Makoto Koga; Kunihiko Gotoh; Kenichi Matsumaru; Mitsuya Kawata


Archive | 2006

Terminating resistance adjusting method, semiconductor integrated circuit and semiconductor device

Yutaka Nemoto; Yoshimasa Ogawa; Miki Yanagawa; Makoto Koga


Archive | 1999

Test method for semiconductor device, and semiconductor device

Kunihiko Goto; Mitsuya Kawada; Makoto Koga; Kenichi Matsumaru; 誠 古賀; 充哉 川田; 邦彦 後藤; 賢一 松丸


Archive | 1998

Serial/parallel converter using holding and latch flip-flops

Makoto Koga; Yoshinori Okajima


Archive | 1993

Integrierte Halbleiterschaltung mit für einen Betrieb mit geringer Amplitude angepasster Eingangs/Ausgangs-Schnittstelle

Masao Taguchi; Satoshi Eto; Yoshihiro Takemae; Hiroshi Yoshioka; Makoto Koga

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