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Dive into the research topics where Sumi Tatsumi is active.

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Featured researches published by Sumi Tatsumi.


Integrated Ferroelectrics | 1995

256Kb Ferroelectric nonvolatile memory technology for 1T/1C cell with 100ns read/write time at 3V

Sumi Tatsumi; Moriwaki Nobuyuki; Nakane George; Nakakuma Tetsuji; Judai Yuji; Uemoto Yasuhiro; Nagano Yoshihisa; Hayashi Shinichiro; Azuma Masamichi; Otsuki Tatsuo; Kano Gota; Cuchiaro JosephD.; Scott MichaflC.; McMillan LarryD.; Paz de Araujo CarlosA.

Abstract A 3V 100ns read/write 256kb ferroelectric nonvolatile memory (FeRAM) is achieved with 1T/1C cells, novel reference cell circuits and cell plate circuits. The FeRAM is fabricated in 1.2um CMOS process with single Aluminum interconnection and Bi based layered perovskite ferroelectric material “Y-l” and has no fatigue even after 1012 destructive read and re-write stress cycles.


Archive | 2004

IC card and its OS starting method

Oya Mitsunori; Sumi Tatsumi


Archive | 1995

REFERENCE POTENTIAL GENERATOR AND SEMICONDUCTOR MEMORY DEVICE

Kuraki Toshio; Hirano Hiroshige; Nakane Joji; Nakakuma Tetsuji; Sumi Tatsumi; Moriwaki Nobuyuki


Archive | 1995

SEMICONDUCTOR MEMORY DEVICE AND METHOD OF DRIVING IT

Hirano Hiroshige; Nakane Joji; Nakakuma Tetsuji; Kuraki Toshio; Moriwaki Nobuyuki; Sumi Tatsumi


Archive | 2001

Semiconductor integrated circuit, noncontact type information medium mounted with the semiconductor integrated circuit, and method for driving semiconductor integrated circuit

Asada Hiroaki; Inoue Atsuo; Matsuura Taketoshi; Nakane Joji; Sumi Tatsumi


Archive | 2002

SEMICONDUCTOR INTEGRATED CIRCUIT AND NONCONTACT INFORMATION MEDIUM MOUNTED THEREWITH

Nakane Joji; Sumi Tatsumi


Archive | 2002

MANUFACTURING METHOD FOR SEMICONDUCTOR DEVICE AND SEMICONDUCTOR WAFER

Oya Mitsunori; Nakane Joji; Sumi Tatsumi


Archive | 1996

SEMICONDUCTOR DEVICE HAVING CHARGE REUSE MEANS

Hirano Hiroshige; Sumi Tatsumi


Archive | 2006

POWER-ON/OFF RESET CIRCUIT AND SEMICONDUCTOR DEVICE

Hirano Hiroshige; Asari Koji; Sumi Tatsumi


Archive | 2002

SEMICONDUCTOR DEVICE AND REUSE METHOD OF ITS ELECTRIC CHARGES

Hirano Hiroshige; Sumi Tatsumi

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