Static information storage and retrieval – Systems using particular element – Amorphous
Reexamination Certificate
2011-07-26
2011-07-26
Lam, David (Department: 2827)
Static information storage and retrieval
Systems using particular element
Amorphous
C365S222000, C365S189090, C365S185210
Reexamination Certificate
active
07986549
ABSTRACT:
An apparatus and a method for refreshing or toggling a phase-change memory cell are described. The apparatus includes a voltage ramp element coupled to the phase-change memory cell and provided for controlling voltage across the phase-change memory cell. A current control element is coupled to the phase-change memory cell and provided for controlling current through the phase-change memory cell. A current sensor element is coupled to the phase-change memory cell. A write-back timer and control element is coupled to the current sensor element and to the current control element.
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Kau DerChang
Tang Stephen
Blakely , Sokoloff, Taylor & Zafman LLP
Lam David
Micro)n Technology, Inc.
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