Driver and termination (zq) calibration circuitry
AssigneeMicron Technology, Inc.
InventorsTimothy M. Hollis, Jennifer E. Taylor, Eric J. Stave, Chulkyu Lee, Chris Gregory Holub
Life of this patent
Estimating the term…
Abstract
Systems and methods include a memory device that includes an internal voltage generator configured to receive a voltage level setting. The internal voltage generator also is configured to generate an internal voltage based at least in part on the voltage level setting. The memory device also includes ZQ calibration circuitry that is configured to receive the internal voltage from the internal voltage generator and to perform ZQ calibration using the received internal voltage.
Claims20
A memory device, comprising:
- an internal voltage generator configured to:
- receive a voltage level setting;
- and
- generate an internal voltage based at least in part on the voltage level setting;
- and
- ZQ calibration circuitry configured to:
- receive the internal voltage from the internal voltage generator;
- and
- perform ZQ calibration using the received internal voltage.
A method, comprising:
- operating a memory device using a first mode of operation;
- monitoring, by monitoring circuitry, one or more indications of mode for the memory device;
- determining that a mode of operation for the memory device is to change from the first mode of operation to a second mode of operation;
- determining ZQ calibration values from a lookup table;
- and
- operating the memory device using the second mode of operation with applied ZQ calibration values for the second mode of operation that is different than the first mode of operation.
A method for operating a memory device comprising:
- receiving, at an internal voltage generator of the memory device, a voltage level setting indicating a mode of operation for the memory device;
- generating, in the internal voltage generator, internal voltages based on the indicated mode of operation;
- and
- performing ZQ calibration in ZQ calibration circuitry of the memory device using the internal voltages.
Dependencies are inferred from the claim text.