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US 2009/0213644 A1Published application
Method and apparatus for accessing a multi-mode programmable resistance memory
AssigneeOvonyx, Inc.
InventorWard Parkinson
Life of this patent
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Abstract
A memory is configurable among a plurality of operational modes. The operational modes may dictate the number of storage levels to be associated with each cell within the memory's storage matrix.
Claims32
An apparatus, comprising:
- a phase change memory cell;
- mode-selection circuitry configured to receive and store information related to a choice of access modes for the phase change memory cell;
- and
- access circuitry configured to access the phase change memory cell according to a mode choice stored by the mode-selection circuitry.
1 more element
An apparatus comprising:
- a phase change memory cell;
- mode-selection circuitry configured to receive and store information related to a choice of access modes for the phase change memory cell;
- and
- programming circuitry configured to write to the phase change memory cell according to a mode choice stored by the mode-selection circuitry, the mode choice being reflected in a characteristic of a current pulse generated by the programming circuitry to program the memory cell.
1 more element
A method comprising the steps of:
- storing mode selection information in a circuit associated with a programmable resistance memory;
- and
- accessing the programmable resistance memory according to the stored mode selection information.
An electronic device, comprising:
- a phase change memory cell;
- mode-selection circuitry configured to receive and store information related to a choice of access modes for the phase change memory cell;
- access circuitry configured to access the phase change memory cell according to a mode choice stored by the mode-selection circuitry;
- and
- a microprocessor configured to initiate access of the mode selected memory cell.
2 more elements
Dependencies are inferred from the claim text.