公开(公告)号：US20250006242A1

公开(公告)日：2025-01-02

申请号：US18522252

申请日：2023-11-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： DONGHA KIM ,  DO-HAN KIM ,  BOBAE KIM ,  CHANGMIN LEE ,  KYEONGJIN CHO

IPC: G11C11/406

Abstract: A memory device according to an embodiment includes a memory cell array including a plurality of memory cells disposed in a plurality of rows, a register configured to store row addresses corresponding to the plurality of rows and access counts for the plurality of rows, and a refresh controller configured to determine a refresh address based on the stored row addresses and a refresh command being received, and change a refresh period for a target row based on the refresh address being associated with a previously performed refresh for the target row and the access count for a row corresponding to the target row being reached a threshold value.

公开(公告)号：US20230350809A1

公开(公告)日：2023-11-02

申请号：US18140974

申请日：2023-04-28

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： CHINAM KIM ,  TAEKYEONG KO ,  NAMHYUNG KIM ,  DOHAN KIM ,  BYEONGNOH KIM ,  BOBAE KIM ,  CHANGMIN LEE ,  KYEONGJIN CHO ,  INSU CHOI

IPC: G06F12/10

CPC classification number: G06F12/10

Abstract: A memory device includes; a memory cell array, and a command/address decoder including a buffer memory, a first decoding logic circuit configured to decrypt command/address information, and a second decoding logic circuit configured to decrypt an address table. The command/address decoder is configured to decrypt a first command received from a memory controller through the first decoding logic circuit to obtain a table synchronization command, decrypt data received from the memory controller after a predefined latency from receipt of the first command through the second decoding logic circuit to obtain an address table, store the address table in the buffer memory, decrypt a second command received from the memory controller through the first decoding logic circuit to obtain a table-based command and index information associated with the address table, and execute the table-based command with respect to an address corresponding to the index information.