07751231 cites 14 patents.

A method and an integrated circuit for determining the state of a resistivity changing memory cell. In one embodiment the method includes detecting a first resistance of the resistivity changing memory cell, determining whether the first resistance value is smaller than a predetermined threshold value thereby determining a first result value, initializing the resistivity changing memory cell into one of at least four resistivity changing memory states, detecting a second resistance value of the resistivity changing memory cell, determining whether the second resistance value is smaller than the predetermined threshold value determining a second result value, and determining the state of the resistivity changing memory cell state using the first and the second result values.

Title
Method and integrated circuit for determining the state of a resistivity changing memory cell
Application Number
12/115433
Publication Number
7751231 (B2)
Application Date
May 5, 2008
Publication Date
July 6, 2010
Inventor
Ulrich Klostermann
Munich
DE
Peter Schrogmeier
Munich
DE
Agent
Dicke Billig & Czaja PLLC
Assignee
Qimonda
DE
IPC
G11C 11/00
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