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US 2019/0198104 A1Published application
Devices and Methods for Programming Resistive Change Elements
AssigneeNantero, Inc.
InventorsJia Luo, Sheyang Ning, Lee E. Cleveland
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Abstract
Devices and methods for programming resistive change elements using an electrical stimulus are disclosed. According to some aspects of the present disclosure the devices and methods program at least one resistive change element within at least one resistive change element cell in a resistive change element array using an electrical stimulus having a voltage level greater than a steady state voltage level that can be supplied by a power supply.
Claims25
A resistive change element device, comprising:
- a plurality of resistive change element cells;
- a power supply having a first output configured to generate a first voltage waveform in response to a current stimulus and a second output configured to generate a second voltage waveform in response to said current stimulus, wherein said power supply is configured so that said first output has an inductance sized for generating said first voltage waveform and a capacitance sized for generating said first voltage waveform, wherein said power supply is configured so that said second output has an inductance sized for generating said second voltage waveform and a capacitance sized for generating said second voltage waveform, and wherein said first voltage waveform oscillates around a first voltage and said second voltage waveform oscillates around a second voltage;
- a current stimulus circuit electrically connected to said first output and said second output, wherein said current stimulus circuit is configured to create said current stimulus by changing an amount of current flowing from said first output and an amount of current flowing into said second output;
- and
- an address decoder and driver circuit electrically connected to said plurality of resistive change element cells, said first output, and said second output, wherein said address decoder and driver circuit is configured to transmit at least part of said first voltage waveform and at least part of said second voltage waveform to at least one resistive change element cell in said plurality of resistive change element cells.
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A resistive change element device, comprising:
- a plurality of resistive change element cells;
- a power supply having a first output configured to generate a first voltage waveform in response to a current stimulus and a second output configured to supply a second voltage, wherein said power supply is configured so that said first output has an inductance sized for generating said first voltage waveform and a capacitance sized for generating said first voltage waveform, and wherein said first voltage waveform oscillates around a first voltage;
- a current stimulus circuit electrically connected to said first output and said second output, wherein said current stimulus circuit is configured to create said current stimulus by changing an amount of current flowing from said first output and an amount of current flowing into said second output;
- and
- an address decoder and driver circuit electrically connected to said plurality of resistive change element cells, said first output, and said second output, wherein said address decoder and driver circuit is configured to transmit at least part of said first voltage waveform and said second voltage to at least one resistive change element cell in said plurality of resistive change element cells.
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A method for programming a resistive change element, said method comprising:
- generating a first voltage waveform and a second voltage waveform in response to a current stimulus, wherein said first voltage waveform oscillates around a first voltage and said second voltage waveform oscillates around a second voltage;
- and
- transmitting at least part of said first voltage waveform and at least part of said second voltage waveform to a resistive change element cell to apply an electrical stimulus to said resistive change element cell, wherein said electrical stimulus has a voltage greater than a difference between said first voltage and said second voltage.
A method for programming a resistive change element, said method comprising:
- generating a first voltage waveform in response to a current stimulus, wherein said first voltage waveform oscillates around a first voltage;
- and
- transmitting at least part of said first voltage waveform and a second voltage to a resistive change element cell to apply an electrical stimulus to said resistive change element cell, wherein said second voltage has a substantially constant voltage level, and wherein said electrical stimulus has a voltage greater than a difference between said first voltage and said second voltage.
Dependencies are inferred from the claim text.