Apparatus with refresh management mechanism
AssigneeLodestar Licensing Group LLC
InventorsNathaniel J. Meier, James S. Rehmeyer, David R. Brown
Life of this patent
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Abstract
Methods, apparatuses, and systems related to managing operations performed in response to refresh management (RFM) commands. A controller generates the RFM command for coordinating a refresh management operation targeted for implementation at an apparatus. The apparatus tracks refresh target set that includes refresh management target locations within the apparatus. According to the tracked refresh management target set, the apparatus selectively implements the targeted refresh management operation and/or a response operation in addition to or as a replacement for the targeted refresh management operation.
Claims21
A method, comprising:
- receiving, at a low power double data rate (LPDDR) memory device from a memory controller external to the LPDDR memory device via command and address terminals of the LPDDR memory device that are coupled with a command bus and an address bus, a refresh management (RFM) command for refreshing one or more memory banks of the LPDDR memory device;
- and
- performing, in response to receiving the RFM command, a refresh operation at the one or more memory banks of the LPDDR memory device during a time associated with the RFM command, wherein the time associated with the RFM command comprises a predetermined duration following reception of the RFM command.
A method, comprising:
- receiving, at a low power double data rate (LPDDR) memory device command and address terminals of the LPDDR memory device that are coupled with a command bus and an address bus, a refresh management (RFM) command for refreshing a portion of the LPDDR memory device;
- and
- performing, in response to receiving the RFM command, a refresh operation at the portion of the LPDDR memory device during a time following reception of the RFM command.
An apparatus, comprising:
- a memory array of a low power double data rate (LPDDR) memory device, the memory array comprising one or more memory banks;
- an input circuit of the LPDDR memory device configured to receive command signals and address signals;
- and
- a refresh control circuit of the LPDDR memory device configured to determine, in response to the LPDDR memory device receiving a refresh management (RFM) command via the input circuit, whether to perform a refresh operation at the one or more memory banks of the LPDDR memory device during a time associated with the RFM command, wherein the time associated with the RFM command comprises a predetermined duration following reception of the RFM command.
Dependencies are inferred from the claim text.