Memory with per die temperature-compensated refresh control
AssigneeMicron Technology, Inc.
InventorsJames S. Rehmeyer, Jason M. Johnson, Joo-Sang Lee
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Abstract
Memory devices, systems, and associated methods with per die temperature-compensated refresh control, and associated methods, are disclosed herein. In one embodiment, a memory device includes a plurality of memory cells and a sensor configured to measure a temperature of the memory device. The memory device determines a frequency at which it is receiving refresh commands. The memory device is further configured to skip refresh operations of the memory cells based, at least in part, on the determination and on the temperature of the memory device.
Claims20
A memory device, comprising:
- a plurality of memory cells;
- and
- a sensor configured to measure a temperature of the memory device,
- wherein the memory device is configured to:
- skip a first number of refresh operations of the memory cells when the temperature of the memory device is less than a first threshold value and greater than a second threshold value, the first number being greater than zero;
- and
- skip a second number of the refresh operations of the memory cells when the temperature of the memory device is less than the second threshold value, the second number being greater than the first number.
A memory device, comprising:
- a plurality of memory cells;
- and
- a sensor configured to measure a temperature of the memory device,
- wherein the memory device is configured to:
- determine whether the memory device is receiving refresh commands at a first frequency or at a second frequency greater than the first frequency;
- skip a first number of refresh operations of the memory cells when (i) the memory device determines the memory device is receiving the refresh commands at the second frequency and (ii) the temperature of the memory device is less than a first threshold value;
- and
- skip a second number of refresh operations of the memory cells different from the first number when (i) the memory device determines the memory device is receiving the refresh commands at the first frequency and (ii) the temperature of the memory device is less than a second threshold value.
A memory device, comprising:
- a plurality of memory cells;
- and
- a counter having a value corresponding to refresh operations of the memory cells,
- wherein the memory device is configured to:
- determine that the memory device is receiving refresh operations at an increased frequency;
- and
- based at least in part on the determination and on the value of the counter, skip a number of the refresh operations of the memory cells.
Dependencies are inferred from the claim text.