公开(公告)号：US20240062800A1

公开(公告)日：2024-02-22

申请号：US17890022

申请日：2022-08-17

Applicant: QUALCOMM Incorporated

Inventor： Victor Van Der Veen ,  Pankaj Deshmukh ,  Behnam Dashtipour ,  David Hartley ,  Mosaddiq Saifuddin

IPC: G11C11/406 ,  G11C11/4096

CPC classification number: G11C11/40618 ,  G11C11/40615 ,  G11C11/4096

Abstract: An effect known as “rowhammer” may be mitigated in a DRAM organized in sub-banks of two or more rows. Row activation commands directed to a sub-bank may be detected. The number of row activation commands occurring within a refresh window may be counted and compared with a threshold. When it is detected that the number of row activation commands within the refresh window exceeds the threshold, an additional refresh command may be provided to the DRAM.