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US 2018/0294039 A1Published application
Method, system and device for correlated electron switch (ces) device operation
AssigneeArm Limited
InventorsMudit Bhargava, Vikas Chandra
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Abstract
Described are methods, systems and devices for operation of correlated electron switch (CES) devices. A CES device may be placed in a conductive or low impedance state, or an insulative or high impedance state. A programming signal may be applied a CES device with a sufficiently high current to permanently place the CES device in the conductive or low impedance state.
Claims19
A method comprising:
- applying a first programming signal generated by a write circuit to terminals of a correlated electron switch (CES) element to provide a first current in the CES element sufficient to place the CES element in a high impedance or insulative state;
- and
- applying a second programming signal from the write circuit to the terminals of the CES element to provide a voltage across terminal of the CES element sufficient to place the CES element in a low impedance or conductive state, the second programming signal further providing a second current in the CES element having a magnitude greater than a magnitude of the first current,
- wherein the magnitude of the second current is sufficiently high to prevent a subsequent transition of the CES element to the high impedance or insulative state responsive to a subsequently applied programming signal generated by the write circuit.
1 more element
An apparatus comprising:
- one or more correlated electron switch (CES) elements;
- and
- a write circuit to:
- generate a first programming signal for application to terminals of at least one of the one or more CES elements to provide a first current to terminals of the at least one of the one or more CES elements sufficient to place the at least one of the one or more CES elements in a high impedance or insulative state;
- and
- generate a second programming signal for application to the terminals of the at least one of the one or more CES elements to provide a second current in the at least one of the one or more CES elements having a magnitude greater than a magnitude of the first current,
- wherein the magnitude of the second current is sufficiently high to prevent a subsequent transition of the at least one of the one or more CES elements to the high impedance or insulative state responsive to a subsequently applied programming signal generated by the write circuit.
4 more elements
A method comprising:
- resetting a correlated electron switch (CES) element to a high impedance or insulative state to permit at least one type of access to a secure device;
- and
- setting the CES element to permanently place the CES element in a low impedance or conductive state by application of a compliance current exceeding a maximum reset current to thereby subsequently prevent the at least one type of access to the secure device.
The method of 16, and further comprising forming the CES in the low impedance or conductive state.
Dependencies are inferred from the claim text.