Read reference circuit for a sense amplifier within a...

Details Read reference circuit for a sense amplifier within a... Read reference circuit for a sense amplifier within a...

2011-03-29

2011-03-29

Auduong, Gene N. (Department: 2827)

Static information storage and retrieval

Systems using particular element

Amorphous

C365S203000, C365S189090

Reexamination Certificate

active

07916527

ABSTRACT:
A read reference circuit for a sense amplifier within a chalcogenide memory device is disclosed. The read reference circuit provides a reference voltage level to the sense amplifier for distinguishing between a logical “0” state and a logical “1” state within a chalcogenide memory cell. In conjunction with a precharge circuit, the read reference circuit generates a selectable read reference current to the sense amplifier in order to detect the logical state of the chalcogenide memory cell. The precharge circuit precharges the bitlines of the chalcogenide memory cell before the sense amplifier detects the logical state of the chalcogenide memory cell.

REFERENCES:
patent: 6731528 (2004-05-01), Hush et al.
patent: 6944041 (2005-09-01), Li et al.
patent: 6954385 (2005-10-01), Casper et al.
patent: 7024502 (2006-04-01), Horowitz et al.
patent: 7245526 (2007-07-01), Oh et al.
patent: 7420851 (2008-09-01), Fasoli

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