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Hitachi Research & Development

Hitachi

Chronology of Major Research Achievements

Year Achievement Publication List
Reference No.
(Conference Presentations)
1976 First 16-Kb DRAM (ISSCC) (2)
1978 First single 5-V 16-Kb DRAM (ESSCIRC) (3)
1980 First 64-Kb DRAM (ISSCC) (4)
1980 First CMOS DRAM Concept (IEDM) (5)
1982 First Trench Capacitor DRAM Cell (IEDM) (7)
1984 First 1-Mb DRAM with on-chip Voltage-down Converter (ISSCC) (8)
1987 First 1-Mb BiCMOS DRAM (ISSCC) (17), (26)
1990 First 1.5-V 64-Mb DRAM (Symposium on VLSI Circuits) (27), (29), (30)
1992-
1993
Leakage-Current Reduction Circuits (ISSCC and others) (36), (37), (38), (39), (41), (42)
2006-
present
Adaptive Circuits for the 0.5-V Nanoscale Era (ISSCC and others) (79)-(99)