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US 10,832,792 B1Granted
Apparatuses and methods for adjusting victim data
AssigneeMicron Technology, Inc.
InventorsDaniel B. Penney, Jason M. Brown
Life of this patent
Estimating the term…
Abstract
Addresses of accessed word lines are stored. Data related to victim word lines associated with the accessed word line are also stored. The victim word lines may have data stored in relation to multiple accessed word lines. The data related to the victim word lines is adjusted when the victim word line is refreshed during a targeted refresh operation or an auto-refresh operation. The data related to the victim word lines is adjusted when the victim word line is accessed during a memory access operation.
Claims20
An apparatus comprising:
- a stack configured to store:
- a plurality of row addresses corresponding to a plurality of word lines;
- and
- victim data associated with each of the plurality of row addresses, wherein the victim data corresponds to at least one victim word line of each of the plurality of accessed word lines associated with the plurality of row addresses, wherein the victim data indicates whether the at least one victim word line has been healed;
- a reverse scrambler configured to provide an aggressor row address associated with at least one of a refresh address or an accessed row address;
- and
- a victim data logic circuit configured to adjust the victim data associated with a row address of the plurality of row addresses that matches the aggressor row address.
4 more elements
An apparatus comprising:
- a reverse scrambler configured to provide an aggressor row address associated with at least one of a refresh address or an accessed row address;
- a victim data logic circuit configured to set a victim flag to a refreshed state, wherein the victim flag is associated with a row address that matches the aggressor row address;
- and
- an address scrambler configured to provide at least one victim address based on the row address when the victim flag is in an unhealed state, wherein the at least one victim address is used to refresh a victim word line during a targeted refresh operation.
1 more element
A method comprising:
- storing a row address in a register;
- setting victim data to a first value, wherein the victim data is associated with the row address in the register;
- calculating at least one aggressor row address based on a second row address associated with a refresh operation or an access operation;
- comparing the row address to the at least one aggressor row address;
- and
- setting the victim data to a second value if the row address matches the at least one aggressor row address.
3 more elements
Dependencies are inferred from the claim text.