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US 12,737,123 B2Granted
Apparatuses and methods for aggressor queue based mitigation threshold
AssigneeMicron Technology, Inc.
InventorYang Lu
Life of this patent
Estimating the term…
Abstract
Apparatuses and methods aggressor queue mitigation based threshold. A memory device detects aggressor rows by changing a count value associated with the row when it is accessed and comparing the count value to a mitigation threshold. Identified aggressor rows are stored in an aggressor queue. The value of the mitigation threshold is set based on a number of addresses which are stored in the aggressor queue. For example the threshold may increase as the number of addresses in the queue increases.
Claims20
An apparatus comprising:
- an aggressor queue configured to store identified aggressor addresses;
- a counter circuit configured to receive a row address and change a count value associated with the row address;
- a threshold comparator circuit configured to compare the changed count value to a mitigation threshold and store the row address as an identified aggressor address in the aggressor queue;
- and
- a mitigation threshold circuit configured to set a value of the mitigation threshold based on a number of the identified aggressor addresses stored in the aggressor queue.
2 more elements
An apparatus comprising:
- a memory array comprising a plurality of word lines each associated with a row address and a count value;
- an aggressor queue comprising a plurality of slots, wherein the aggressor queue is configured to provide a used slot signal which indicates a number of the plurality of slots which store an address;
- an aggressor detection circuit configured to set a value of a mitigation threshold based on the used slot signal, and configured to determine if a row address is an aggressor address based on a comparison of the count value to the mitigation threshold when the row address is accessed and configured to store the aggressor row address in one of the plurality of slots.
A method comprising:
- receiving an address, changing a count value associated with the address and comparing the count value to a threshold;
- identifying the address as an aggressor address based on the comparing;
- adding the aggressor address to an aggressor queue;
- and
- changing a value of the threshold based on a number of aggressor addresses in the queue.
2 more elements
Dependencies are inferred from the claim text.