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US 2020/0090750 A1Published application
Row hammer refresh for content-addressable memory devices
AssigneeMicron Technology, Inc.
InventorsYu Zhang, Jun Wu, Yuan He
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Abstract
A method of operating a memory device may include receiving, during a phase of a row hammer refresh (RHR) interval, at least one row hammer address (RHA) of a content-addressable memory (CAM). The method further includes storing, during the phase of the RHR interval, a received RHA of the at least one received RHA in an address register. Further, the method includes refreshing the stored RHA of the CAM via a RHR during the RHR interval.
Claims20
A method of operating a memory device, comprising:
- receiving, during a row hammer refresh (RHR) interval, at least one row hammer address (RHA) of a content-addressable memory (CAM) device;
- storing, during the RHR interval, a RHA of the at least one RHA in an address register of one or more address registers of the CAM device;
- and
- refreshing the RHA via a RHR during the RHR interval.
1 more element
A semiconductor device, comprising:
- a content-addressable memory (CAM) array including row addresses;
- and
- a control circuit including one or more registers and configured to:
- select a phase of a row hammer refresh (RHR) interval based on a received phase control signal:
- receive, during the phase, at least one address of the row addresses;
- store, in a register of the one or more registers associated with the phase, a received address of the at least one address as a row hammer address (RHA);
- and
- transmit an RHR signal to the CAM array to refresh the RHA.
5 more elements
An electronic system, comprising:
- at least one input device;
- at least one output device;
- at least one processor device operably coupled to the input device and the output device;
- and
- at least one semiconductor device operably coupled to the at least one processor device and comprising:
- a content-addressable memory (CAM) array;
- and
- a control circuit coupled to the CAM array and configured to:
- store a first row hammer address (RHA) in a first register of one or more registers during a row hammer refresh (RHR) interval;
- store a second RHA in a second register of the one or more registers during the RHR interval;
- and
- transmit an RHR signal to the CAM array to refresh the first RHA and the second RHA during the RHR interval.
9 more elements
Dependencies are inferred from the claim text.