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US 2024/0063794 A1Published application
Apparatuses, systems, and methods for memory initiated calibration
AssigneeMicron Technology, Inc.
InventorSujeet Ayyapureddi
Life of this patent
Estimating the term…
Abstract
Apparatuses, systems, and methods for memory initiated calibration. The memory includes a termination circuit with a tunable resistor and a calibration detection circuit with a replica tunable resistor. The calibration detection circuit measures a resistance of the replica tunable resistor and provides a calibration request signal if the resistance is outside a tolerance. Responsive to the calibration request signal, a controller of the memory schedules the memory for a calibration operation.
Claims21
An apparatus comprising:
- a termination circuit including a tunable resistor;
- and
- a calibration detection circuit including a replica tunable resistor, wherein the calibration detection circuit is configured to measure a resistance of the replica tunable resistor and provide a calibration request signal responsive to the measured resistance being outside a tolerance.
A system comprising:
- a memory module including a memory, the memory comprising:
- a termination circuit including a tunable resistor;
- and
- a calibration detection circuit including a replica tunable resistor, wherein the calibration detection circuit is configured to measure a resistance of the replica tunable resistor and provide a calibration request responsive to the measured resistance being outside a tolerance;
- and
- a controller comprising:
- a calibration scheduling logic circuit configured to provide a calibration command to the memory responsive to the calibration request.
4 more elements
A method comprising:
- measuring a resistance of a replica resistor which replicates a resistor of a termination circuit;
- determining if the resistance of the replica resistor is outside a tolerance;
- and
- providing a calibration request signal if the measured resistance of the replica resistor is outside the tolerance.
1 more element
A method comprising:
- receiving a calibration request signal from a memory;
- scheduling a calibration of the memory responsive to the calibration request signal;
- and
- providing a calibration command to the memory based on the scheduling.
1 more element
Dependencies are inferred from the claim text.