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US 2011/0211391 A1Published application
Programmable Resistance Memory
AssigneeOvonyx, Inc.
InventorWard Parkinson
Life of this patent
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Abstract
A memory includes an interface through which it provides access to memory cells, such as phase change memory cells. Such access permits circuitry located on a separate integrated circuit to provide access signals, including read and write signals suitable for binary or multi-level accesses.
Claims25
A method of operating an electronic device comprising:
- providing a first conductive line;
- providing a second conductive line;
- coupling an access device and a programmable resistance device in series between said first conductive line and said second conductive line;
- applying a first electrical pulse to said first conductive line, said first electrical pulse increasing the magnitude of the voltage of said first conductive line;
- monitoring the voltage of said first conductive line;
- detecting a decrease in the magnitude of the voltage of said first conductive line, said decrease occurring at a first time;
- detecting the voltage of said first conductive line at said first time;
- terminating said first electrical pulse;
- and
- applying a second electrical pulse to said first conductive line, said second electrical pulse forcing a first voltage on said first conductive line, said first voltage having a magnitude greater than or equal to the magnitude of said voltage detected at said first time.
7 more elements
A method of operating an electronic device comprising:
- providing a first conductive line;
- providing a second conductive line;
- coupling an access device and a programmable resistance device in series between said first conductive line and said second conductive line, said access device having a threshold voltage, said access device switching from a resistive state to a conductive state upon application of said threshold voltage;
- and
- detecting the state of said programmable resistance device with an electrical pulse, said electrical pulse producing a voltage across said access device, said voltage being less than said threshold voltage.
2 more elements
Dependencies are inferred from the claim text.