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.