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Dive into the research topics where Yasuo Murakuki is active.

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Featured researches published by Yasuo Murakuki.


international solid-state circuits conference | 2004

A 0.9 V 1T1C SBT-based embedded non-volatile FeRAM with a reference voltage scheme and multi-layer shielded bit-line structure

Kunisato Yamaoka; Shunichi Iwanari; Yasuo Murakuki; Hiroshige Hirano; Masahiko Sakagami; Tetsuji Nakakuma; Takashi Miki; Yasushi Gohou

A 1T1C embedded FeRAM operates at an ultra low voltage of 0.9 V with 550 ns access even after 10 years of imprint degradation. The ultra low voltage operation and high-reliability characteristics are attained by using a reference-voltage scheme and a multi-layer shielded bit-line structure.


symposium on vlsi circuits | 2004

High density and low power nonvolatile FeRAM with non-driven plate and selected driven bit-line scheme

Hiroshigc Hirano; Masahiko Sakagami; Kunisato Yamaoka; Tetsuji Nakakuma; Shunichi Iwanari; Yasuo Murakuki; Takashi Miki; Yasushi Gohou; Eiji Fujii

We have successfully developed high density and low power embedded 1Mbit FeRAM. Low operating voltage of 1.5V with ferroelectric capacitor which operates at 0.75V was realized by using technology of (1) non-driven plate scheme with non-refresh operation and (2) selected driven bit-line scheme. The memory core size is reduced down to 53% and the power consumption is reduced to approximately one-fiftieth compared with those of the conventional scheme.


Archive | 2003

Ferroelectric memory device and method for reading data from the same

Kunisato Yamaoka; Hiroshige Hirano; Yasuo Murakuki


Archive | 2003

Semiconductor memory device and method for initializing the same

Yasuo Murakuki; Hiroshige Hirano


Archive | 2009

ECC CIRCUIT, SEMICONDUCTOR MEMORY DEVICE, MEMORY SYSTEM

Yoshiaki Nakao; Yasushi Gohou; Shunichi Iwanari; Masanori Matsuura; Yasuo Murakuki


Archive | 2003

Ferroelectric capacitor memory

Yasuo Murakuki


Archive | 2008

Semiconductor memory device and method for fabricating the same

Yoshiaki Nakao; Yasushi Gohou; Shunichi Iwanari; Yasuo Murakuki; Masanori Matsuura


Archive | 2005

Ferroelectric memory and method for reading data from the ferroelectric memory

Kunisato Yamaoka; Hiroshige Hirano; Yasushi Gohou; Shunichi Iwanari; Yasuo Murakuki; Masahiko Sakagami; Tetsuji Nakakuma; Takashi Miki


Archive | 2006

Ferroelectric semiconductor memory device

Kunisato Yamaoka; Yasuo Murakuki


Technical report of IEICE. SDM | 2004

High Density and Low Power Nonvolatile FeRAM Memory Cell Architecture

Hiroshige Hirano; Masahiko Sakagami; Kunisato Yamaoka; Tetsuji Nakakuma; Shunichi Iwanari; Yasuo Murakuki; Takashi Miki; Yasushi Gohou; Eiji Fujii

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