Static information storage and retrieval – Systems using particular element – Resistive
Reexamination Certificate
2011-03-15
2011-03-15
Phan, Trong (Department: 2827)
Static information storage and retrieval
Systems using particular element
Resistive
C365S163000
Reexamination Certificate
active
07907435
ABSTRACT:
At the time of, for example, a set operation (SET) for making a phase-change element in a crystalline state, a pulse of a voltage Vreset required for melting the element is applied to the phase-change element, and subsequently a pulse of a voltage Vset that is lower than Vreset and is required for crystallizing the element is applied thereto. And, the magnitude of this voltage Vset is then changed depending on the ambient temperature so that the magnitude of the voltage Vset is small as the temperature becomes high (TH). In this manner, a margin of a write operation between the set operation and a reset operation (RESET) for making the element to be in amorphous state is improved.
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Kawahara Takayuki
Kitai Naoki
Osada Kenichi
Yanagisawa Kazumasa
Miles & Stockbridge P.C.
Phan Trong
Renesas Electronics Corporation
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