Apparatuses and methods for dynamic targeted refresh steals
AssigneeMicron Technology, Inc.
InventorsLiang Li, Yu Zhang, Yuan He
Life of this patent
Estimating the term…
Abstract
Embodiments of the disclosure are drawn to apparatuses, systems, and methods for dynamic targeted refresh steals. A memory bank ma receive access commands and then periodically enter a refresh mode, where auto refresh operations and targeted refresh operations are performed. The memory bank may receive a refresh management command based on a count of access commands directed to the memory bank. Responsive to the refresh management signal, a panic targeted refresh operation may be performed on the memory bank. A number of times the refresh management signal was issued may be counted, and based on that count a next periodic targeted refresh operation may be skipped.
Claims20
An apparatus comprising:
- a memory bank;
- a refresh state control circuit associated with the memory bank, the refresh state control circuit configured to periodically provide a targeted refresh signal and also provide the targeted refresh signal responsive to receiving a refresh management signal;
- and
- a skip logic circuit configured to provide a skip signal based, in part, on a number of times the refresh management signal is received, wherein the refresh state control circuit is configured to skip providing a next of the targeted refresh signals responsive to the skip signal.
The apparatus of claim wherein the next of the targeted refresh signals is during the first mode.
The apparatus of claim wherein the refresh state control circuit is configured to provide a pulse of a command signal responsive to skipping the next targeted refresh signal.
An apparatus comprising:
- a memory bank;
- an interface configured to provide a refresh management signal to the memory bank;
- a refresh control circuit configured to:
- indicate a number of refresh operations during a refresh mode;
- indicate a refresh operation when the memory bank is not in the refresh mode based on the refresh management signal;
- and
- reduce the number of the refresh operations during a next time the memory is in the refresh mode based on a number of times the refresh operation was indicated when the memory bank was not m the refresh mode.
A method, comprising:
- periodically providing a targeted refresh signal;
- providing the targeted refresh signal responsive to receiving a refresh management signal;
- providing a skip signal based, in part, on a number of times the refresh management signal is received;
- and
- skipping a next targeted refresh signal responsive to the skip signal.
Dependencies are inferred from the claim text.