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US 2022/0093165 A1Published application
Apparatuses and methods for controlling refresh operations
AssigneeMicron Technology, Inc.
InventorsSHINGO MITSUBORI, HIDEKAZU NOGUCHI
Life of this patent
Estimating the term…
Abstract
Embodiments of the disclosure are drawn to apparatuses and methods for controlling refresh operations. Responsive to a refresh command, or one or more pumps generated responsive to the refresh command, different banks of a memory array may perform different types of refresh operations for a pump. In some examples, the type of refresh operation performed by a bank may vary from pump to pump of a refresh operation.
Claims20
An apparatus comprising:
- a plurality of memory banks, and
- a plurality of refresh control circuits, individual ones of the plurality of refresh control circuits associated with corresponding individual ones of the plurality of memory banks, wherein individual ones of the plurality of refresh control circuits are configured to cause one of a plurality of refresh operation types to be performed on the corresponding individual ones of the plurality of memory banks responsive, at least in part, to a refresh type signal, wherein a refresh operation type of the plurality of refresh operations types is based, at least in part, on a state of the refresh type signal;
- and
- a refresh type state control circuit configured to provide the refresh type signal to the plurality of refresh control circuits, wherein the refresh type signal comprises a plurality of refresh type signals, wherein a first refresh type signal of the plurality of refresh type signals is provided to a first group of the plurality of first refresh control circuits and a second refresh type signal of the plurality of refresh type signals is provided to a second group of the plurality of first refresh control circuits, wherein a state of the first refresh type signal is different from a state of the second refresh type signal.
1 more element
An apparatus comprising:
- a refresh control circuit comprising a first portion and a second portion including a plurality of portions,
- wherein the first portion includes a counter circuit configured to provide, based at least in part, on a count value, a first refresh type signal to at least one of the plurality of portions of the second portion and a second refresh type signal to at least another one of the plurality of portions of the second portion, wherein a state of the first refresh type signal and a state of the second refresh type signal indicate a refresh operation type of a plurality of refresh operation types to be performed during a refresh operation, and
- wherein the second portion is configured to cause the refresh operation to be performed on a plurality of memory banks, wherein the refresh operation performed on individual ones of the plurality of memory banks is of the refresh operation type indicated by the first refresh type signal or the second refresh type signal.
A method comprising:
- providing a plurality of pumps of a refresh activation signal from a refresh pump generator;
- responsive to a first pump of the plurality of pumps:
- providing a first refresh type signal having a first state to a first bank region, wherein the first state indicates a first type of refresh operation to be performed on a first memory bank of the first bank region;
- providing a second refresh type signal having a second state to a second bank region, wherein the second state indicates a second type of refresh operation to be performed on a second memory bank of the second bank region;
- performing a first refresh operation of the first type on the first memory bank further responsive to the first refresh type signal;
- and
- performing a second refresh operation of the second type on the second memory bank further responsive to the second refresh type signal, wherein the first refresh operation and the second refresh operation are performed simultaneously.
4 more elements
Dependencies are inferred from the claim text.