Apparatus and method for dual cell common electrode PCRAM memory device
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United States of America Patent
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May 17, 2005
Grant Date -
Dec 4, 2003
app pub date -
Feb 21, 2003
filing date -
Aug 27, 2001
priority date (Note) -
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Abstract
Two PCRAM cells which use a common anode between them are disclosed. The two memory cells can be accessed separately to store two bits of data which can be read and written, and can be stacked one over the other with a common anode between them to form an upper and lower cell pair. Respective access transistors are provided for the cells and arranged to permit reading and writing of the cells.
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