公开(公告)号：US20250068361A1

公开(公告)日：2025-02-27

申请号：US18944972

申请日：2024-11-12

Applicant: Micron Technology, Inc.

Inventor： Elliott C. Cooper-Balis ,  Robert M. Walker ,  Paul Rosenfeld

IPC: G06F3/06

Abstract: An apparatus can include a memory device comprising a memory component and a memory controller that is coupled to the memory component. A memory searching component (MSC) is resident on the apparatus. The MSC can receive an external instruction indicative of performance of an operation to retrieve particular data from the memory component and issue, responsive to receipt of the instruction, a command to the memory controller to cause the memory controller to perform a read request invoking the memory component as part of performance of the operation in the absence of a further external instruction.

公开(公告)号：US12067270B2

公开(公告)日：2024-08-20

申请号：US17946518

申请日：2022-09-16

Applicant: Micron Technology, Inc.

Inventor： Yang Lu ,  Sujeet Ayyapureddi ,  Edmund J. Gieske ,  Cagdas Dirik ,  Ameen D. Akel ,  Elliott C. Cooper-Balis ,  Amitava Majumdar ,  Robert M. Walker ,  Danilo Caraccio

IPC: G06F3/06

CPC classification number: G06F3/0632 ,  G06F3/0604 ,  G06F3/0679

Abstract: Systems, methods, and apparatus for memory device security and row hammer mitigation are described. A control mechanism may be implemented in a front-end and/or a back-end of a memory sub-system to refresh rows of the memory. A row activation command having a row address at control circuitry of a memory sub-system and incrementing a first count of a row counter corresponding to the row address stored in a content addressable memory (CAM) of the memory sub-system may be received. Control circuitry may determine whether the first count is greater than a row hammer threshold (RHT) minus a second count of a CAM decrease counter (CDC); the second count may be incremented each time the CAM is full. A refresh command to the row address may be issued when a determination is made that the first count is greater than the RHT minus the second count.

公开(公告)号：US11893279B2

公开(公告)日：2024-02-06

申请号：US17412077

申请日：2021-08-25

Applicant: Micron Technology, Inc.

Inventor： Cagdas Dirik ,  Robert M. Walker ,  Elliott C. Cooper-Balis

IPC: G06F3/06 ,  G06F12/02 ,  G06F12/12

CPC classification number: G06F3/0659 ,  G06F3/0604 ,  G06F3/0653 ,  G06F3/0679 ,  G06F12/0246 ,  G06F12/12

Abstract: An access tracker configured to receive a request to access a page, determine whether a page identification (ID) associated with the page is in the access tracker, increment an access count of the page in response to determining the page ID is in the access tracker, sort a number of page IDs based on an access count of each page ID, and determine whether a different page is hot or cold in response to sorting the number of page IDs.

公开(公告)号：US20220075558A1

公开(公告)日：2022-03-10

申请号：US17017396

申请日：2020-09-10

Applicant: Micron Technology, Inc.

Inventor： Elliott C. Cooper-Balis ,  Robert M. Walker ,  Paul Rosenfeld

IPC: G06F3/06

Abstract: An apparatus can include a memory device comprising a memory component and a memory controller that is coupled to the memory component. A memory searching component (MSC) is resident on the apparatus. The MSC can receive an external instruction indicative of performance of an operation to retrieve particular data from the memory component and issue, responsive to receipt of the instruction, a command to the memory controller to cause the memory controller to perform a read request invoking the memory component as part of performance of the operation in the absence of a further external instruction.

公开(公告)号：US20190179785A1

公开(公告)日：2019-06-13

申请号：US16058873

申请日：2018-08-08

Applicant: Micron Technology, Inc.

Inventor： Brent Keeth ,  Richard C. Murphy ,  Elliott C. Cooper-Balis

IPC: G06F13/28 ,  G06F12/10 ,  H01L25/065 ,  H01L25/18 ,  H01L23/538 ,  G06F13/16

Abstract: Systems and techniques for a translation device that is configured to enable communication between a host device and a memory technology using different communication protocols (e.g., a communication protocol that is not preconfigured in the host device) is described herein. The translation device may be configured to receive signals from the host device using a first communication protocol and transmit signals to the memory device using a second communication protocol, or vice-versa. When converting signals between different communication protocols, the translation device may be configured to convert commands, map memory addresses to new addresses, map between channels having different characteristics, encode data using different modulation schemes, or a combination thereof.

公开(公告)号：US12217824B2

公开(公告)日：2025-02-04

申请号：US18160292

申请日：2023-01-26

Applicant: Micron Technology, Inc.

Inventor： Edmund Gieske ,  Amitava Majumdar ,  Cagdas Dirik ,  Sujeet Ayyapureddi ,  Yang Lu ,  Ameen D. Akel ,  Danilo Caraccio ,  Niccolo′ Izzo ,  Elliott C. Cooper-Balis ,  Markus H. Geiger

IPC: G11C29/52 ,  G11C7/22 ,  G11C7/24

Abstract: Systems and methods for finite time counting period counting of infinite data streams is presented. In particular example systems and methods enable counting row accesses to a memory media device over predetermined time intervals in order to deterministically detect row hammer attacks on the memory media device. Example embodiments use two identical tables that are reset at times offset in relation to each other in a ping-pong manner in order to ensure that there exists no false negative detections. The counting techniques described in this disclosure can be used in various types of row hammer mitigation techniques and can be implemented in content addressable memory or another type of memory. The mitigation may be implemented on a per-bank basis, per-channel basis or per-memory media device basis. The memory media device may be a dynamic random access memory type device.

公开(公告)号：US12182413B2

公开(公告)日：2024-12-31

申请号：US17897813

申请日：2022-08-29

Applicant: Micron Technology, Inc.

Inventor： Sujeet Ayyapureddi ,  Yang Lu ,  Edmund Gieske ,  Cagdas Dirik ,  Ameen D. Akel ,  Elliott C. Cooper-Balis ,  Amitava Majumdar ,  Danilo Caraccio ,  Robert M. Walker

IPC: G06F11/07 ,  G06F3/06

Abstract: Systems and methods for area-efficient mitigation of errors that are caused by row hammer attacks and the like in a memory media device are described. The counters for counting row accesses are maintained in a content addressable memory (CAM) the provides fast access times. The detection of errors is deterministically performed while maintaining a number of row access counters that is smaller than the total number of rows protected in the memory media device. The circuitry for the detection and mitigation may be in the memory media device or in a memory controller to which the memory media device attaches. The memory media device may be dynamic random access memory (DRAM).

公开(公告)号：US12153832B2

公开(公告)日：2024-11-26

申请号：US17972364

申请日：2022-10-24

Applicant: Micron Technology, Inc.

Inventor： Elliott C. Cooper-Balis ,  Robert M. Walker ,  Paul Rosenfeld

IPC: G06F3/06

Abstract: An apparatus can include a memory device comprising a memory component and a memory controller that is coupled to the memory component. A memory searching component (MSC) is resident on the apparatus. The MSC can receive an external instruction indicative of performance of an operation to retrieve particular data from the memory component and issue, responsive to receipt of the instruction, a command to the memory controller to cause the memory controller to perform a read request invoking the memory component as part of performance of the operation in the absence of a further external instruction.

公开(公告)号：US20240036762A1

公开(公告)日：2024-02-01

申请号：US18227216

申请日：2023-07-27

Applicant: Micron Technology, Inc.

Inventor： Edmund J. Gieske ,  Cagdas Dirik ,  Elliott C. Cooper-Balis ,  Robert M. Walker ,  Amitava Majumdar ,  Sujeet Ayyapureddi ,  Yang Lu ,  Ameen D. Akel ,  Niccolò Izzo ,  Danilo Caraccio ,  Markus H. Geiger

IPC: G06F3/06 ,  G06F12/0802

CPC classification number: G06F3/0656 ,  G06F3/0604 ,  G06F3/0673 ,  G06F12/0802 ,  G06F2212/60

Abstract: Systems, apparatuses, and methods related to bloom filter implementation into a controller are described. A memory device is coupled to a memory controller. The memory controller is configured to implement a counting bloom filter, increment the counting bloom filter in response to a row activate command of the memory device, determine whether a value of the counting bloom filter exceeds a threshold value, and perform an action in response to the value exceeding the threshold value.

公开(公告)号：US20230064745A1

公开(公告)日：2023-03-02

申请号：US17412077

申请日：2021-08-25

Applicant: Micron Technology, Inc.

Inventor： Cagdas Dirik ,  Robert M. Walker ,  Elliott C. Cooper-Balis

IPC: G06F3/06

Abstract: An access tracker configured to receive a request to access a page, determine whether a page identification (ID) associated with the page is in the access tracker, increment an access count of the page in response to determining the page ID is in the access tracker, sort a number of page IDs based on an access count of each page ID, and determine whether a different page is hot or cold in response to sorting the number of page IDs.