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US Patent 12125514 Apparatuses and methods for access based refresh operations

Patent 12125514 was granted and assigned to Micron Technology on October, 2024 by the United States Patent and Trademark Office.

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 US Patent 12125514 Apparatuses and methods for access based refresh operations

Article

Patent abstract

Apparatuses, systems, and methods for access based refresh operations. A memory bank may be divided into multiple sub-banks, each of which has a refresh control circuit. A word line in a first sub-bank may be refreshed responsive to a word line in a second sub-bank being accessed. Once a threshold number of refreshes have been performed in the sub-bank, further accesses to the other sub-banks may be ignored. If the threshold has not been met at the end of a refresh period, then the refresh control circuit may issue a refresh signal.

Infobox
Is a
Patent
Patent
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Patent Applicant
Micron Technology
Micron Technology
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Current Assignee
Micron Technology
Micron Technology
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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
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Patent Number
121255140
Patent Inventor Names
Takamasa Suzuki0
Date of Patent
October 22, 2024
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Patent Application Number
177315290
Date Filed
April 28, 2022
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Patent Citations
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US Patent 11081160 Apparatus and methods for triggering row hammer address sampling
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US Patent 8811100 Cell array and memory device including the same
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US Patent 8862973 Method and system for error management in a memory device
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US Patent 8938573 Row hammer condition monitoring
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US Patent 9087602 Volatile memory device capable of relieving disturbances of adjacent memory cells and refresh method thereof
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US Patent 9123447 Memory, memory system including the same and method for operating memory
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US Patent 9153294 Semiconductor memory device having adjustable refresh period, memory system comprising same, and method of operating same
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US Patent 9190139 Memory and memory system including the same
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US Patent 9251885 Throttling support for row-hammer counters
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US Patent 9286964 Method, apparatus and system for responding to a row hammer event
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US Patent 9299400 Distributed row hammer tracking
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US Patent 9311984 Smart refresh device
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US Patent 9384821 Row hammer monitoring based on stored row hammer threshold value
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US Patent 9390782 Memory with refresh logic to accommodate low-retention storage rows
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US Patent 9396786 Memory and memory system including the same
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US Patent 9406358 Driving circuit and driving method using the same
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US Patent 9412432 Semiconductor storage device and system provided with same
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US Patent 9418723 Techniques to reduce memory cell refreshes for a memory device
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US Patent 9424907 Semiconductor device suppressing BTI deterioration
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US Patent 9484079 Memory device and memory system including the same
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US Patent 9514850 Memory device with improved refresh scheme for redundancy word line
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US Patent 9570143 Semiconductor memory device for performing refresh operation
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US Patent 9570201 Repair of memory devices using volatile and non-volatile memory
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US Patent 9646672 Memory device and method of refreshing the same
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US Patent 9653139 Simultaneous plural wordline within a bank refreshing control device and memory device including the same
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US Patent 9672889 Semiconductor memory device and refresh control method thereof
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US Patent 9685240 Memory device to alleviate the effects of row hammer condition and memory system including the same
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US Patent 9691466 Memory device including refresh controller
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US Patent 9697913 Ferroelectric memory cell recovery
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US Patent 11222683 Apparatuses and methods for staggered timing of targeted refresh operations
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US Patent 11222686 Apparatuses and methods for controlling refresh timing
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US Patent 9734887 Per-die based memory refresh control based on a master controller
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US Patent 9741409 Apparatuses and methods for targeted refreshing of memory
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US Patent 9741421 Refresh circuitry
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US Patent 9741447 Semiconductor device including fuse circuit
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US Patent 9747971 Row hammer refresh command
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US Patent 9761297 Hidden refresh control in dynamic random access memory
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US Patent 9786351 Semiconductor memory device for performing refresh operation and operating method therof
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US Patent 9799391 Dram circuit, redundant refresh circuit and refresh method
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US Patent 9805782 Memory device capable of determining candidate wordline for refresh and control method thereof
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US Patent 9805783 Semiconductor device
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US Patent 9812185 DRAM adjacent row disturb mitigation
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US Patent 9818469 Refresh control device and semiconductor device including the same
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US Patent 9831003 Device and method for repairing memory cell and memory system including the device
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US Patent 9865326 Row hammer refresh command
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US Patent 9865328 Nullifying incorrect sampled data contribution in decision feedback equalizer at restart of forwarded clock in memory system
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US Patent 9892779 Memory device performing hammer refresh operation and memory system including the same
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US Patent 9922694 Apparatuses and methods for controlling refresh operations
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US Patent 9934143 Mapping a physical address differently to different memory devices in a group
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US Patent 9953696 Refresh control circuit for target refresh operation of semiconductor memory device, and operating method thereof
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US Patent 9972377 Refresh controller and memory device including the same
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US Patent 9978430 Memory devices providing a refresh request and memory controllers responsive to a refresh request
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US Patent 10020045 Partial access mode for dynamic random access memory
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US Patent 10020046 Stack refresh control for memory device
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US Patent 10032501 Semiconductor device
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US Patent 10049716 Refresh request queuing circuitry
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US Patent 11227649 Apparatuses and methods for staggered timing of targeted refresh operations
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US Patent 10083737 Row hammer monitoring based on stored row hammer threshold value
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US Patent 10090038 Semiconductor memory device for deconcentrating refresh commands and system including the same
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US Patent 10134461 Apparatuses and methods for selective row refreshes
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US Patent 10141042 Method and apparatus for precharge and refresh control
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US Patent 10147472 Apparatuses and methods for targeted refreshing of memory
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US Patent 10153031 Apparatuses and methods for controlling refresh operations
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US Patent 10170174 Apparatus and methods for refreshing memory
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US Patent 10192608 Apparatuses and methods for detection refresh starvation of a memory
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US Patent 10210925 Row hammer refresh command
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US Patent 10297305 Memory device having twin cell mode and refresh method thereof
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US Patent 10297307 Methods for independent memory bank maintenance and memory devices and systems employing the same
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US Patent 10339994 Semiconductor device
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US Patent 10381327 Non-volatile memory system with wide I/O memory die
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US Patent 10446256 Controller to detect malfunctioning address of memory device
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US Patent 10468076 Redundancy area refresh rate increase
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US Patent 10490250 Apparatuses for refreshing memory of a semiconductor device
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US Patent 10490251 Apparatuses and methods for distributing row hammer refresh events across a memory device
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US Patent 10504577 Apparatus with a row hit rate/refresh management mechanism
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US Patent 10510396 Method and apparatus for interrupting memory bank refresh
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US Patent 10572377 Row hammer refresh for content addressable memory devices
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US Patent 10573370 Apparatus and methods for triggering row hammer address sampling
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US Patent 10607679 Memory device and refreshing method thereof
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US Patent 10685696 Apparatuses and methods for access based refresh timing
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US Patent 10699796 Validation of a repair to a selected row of data
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US Patent 10790005 Techniques for reducing row hammer refresh
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US Patent 10825505 Apparatuses and methods for staggered timing of targeted refresh operations
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US Patent 10832792 Apparatuses and methods for adjusting victim data
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US Patent 10930335 Apparatuses and methods for selective row refreshes
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US Patent 10943636 Apparatuses and methods for analog row access tracking
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US Patent 10950289 Semiconductor device
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US Patent 10957377 Apparatuses and methods for distributed targeted refresh operations
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US Patent 10964378 Apparatus and method including analog accumulator for determining row access rate and target row address used for refresh operation
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US Patent 10978132 Apparatuses and methods for staggered timing of skipped refresh operations
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US Patent 11017833 Apparatuses and methods for pure-time, self adopt sampling for row hammer refresh sampling
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US Patent 11069393 Apparatuses and methods for controlling steal rates
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US Patent 11264079 Apparatuses and methods for row hammer based cache lockdown
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US Patent 11302374 Apparatuses and methods for dynamic refresh allocation
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US Patent 11302377 Apparatuses and methods for dynamic targeted refresh steals
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US Patent 11309010 Apparatuses, systems, and methods for memory directed access pause
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US Patent 11309012 Apparatuses and methods for staggered timing of targeted refresh operations
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US Patent 11315619 Apparatuses and methods for distributing row hammer refresh events across a memory device
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US Patent 11315620 Semiconductor device performing row hammer refresh operation
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US Patent 11320377 Detection device
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US Patent 11348631 Apparatuses, systems, and methods for identifying victim rows in a memory device which cannot be simultaneously refreshed
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US Patent 11380382 Refresh logic circuit layout having aggressor detector circuit sampling circuit and row hammer refresh control circuit
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US Patent 11417383 Apparatuses and methods for dynamic refresh allocation
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US Patent 11532346 Apparatuses and methods for access based refresh timing
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US Patent 11557331 Apparatuses and methods for controlling refresh operations
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US Patent 11610622 Apparatuses and methods for staggered timing of skipped refresh operations
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US Patent 11626152 Apparatuses and methods for pure-time, self adopt sampling for row hammer refresh sampling
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US Patent 11688452 Refresh command control for host assist of row hammer mitigation
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US Patent 11715512 Apparatuses and methods for dynamic targeted refresh steals
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US Patent 11749331 Refresh modes for performing various refresh operation types
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US Patent 6950364 Self-refresh apparatus and method
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US Patent 7002868 High-speed, two-port dynamic random access memory (DRAM) with a late-write configuration
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US Patent 7057960 Method and architecture for reducing the power consumption for memory devices in refresh operations
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US Patent 7082070 Temperature detection circuit and temperature detection method
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US Patent 11935576 Semiconductor device performing row hammer refresh operation
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US Patent 11955158 Apparatuses and methods for access based refresh timing
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US Patent 12002501 Apparatuses and methods for distributed targeted refresh operations
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Patent Primary Examiner
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Hoai V Ho
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CPC Code
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G11C 11/4093
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G11C 11/4085
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G11C 11/40618
0
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G11C 11/40611
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G11C 11/40603
0

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