公开(公告)号：US10777252B2

公开(公告)日：2020-09-15

申请号：US16109720

申请日：2018-08-22

Applicant: Apple Inc.

Inventor： Peter Fu ,  Gregory S. Mathews ,  Kai Lun Hsuing ,  Shane J. Keil

IPC: G06F13/00 ,  G11C11/406 ,  G06F13/16 ,  G06F13/10 ,  G06F13/12

Abstract: A method and apparatus for performing opportunistic refreshes of memory banks is disclosed. Refresh circuitry in a memory controller performs a refresh on each bank of a multi-bank memory at least once during a given refresh interval. At the beginning of an interval, memory banks for which there are no pending transactions (e.g., reads or writes) may be refreshed. During a first portion of the interval, refresh may be skipped for memory banks for which transactions are pending. In a second portion of the interval, refreshes are performed on memory banks that have not been refreshed during the interval, which may cause some memory transactions to be delayed.

公开(公告)号：US20200066328A1

公开(公告)日：2020-02-27

申请号：US16109720

申请日：2018-08-22

Applicant: Apple Inc.

Inventor： Peter Fu ,  Gregory S. Mathews ,  Kai Lun Hsuing ,  Shane J. Keil

IPC: G11C11/406

Abstract: A method and apparatus for performing opportunistic refreshes of memory banks is disclosed. Refresh circuitry in a memory controller performs a refresh on each bank of a multi-bank memory at least once during a given refresh interval. At the beginning of an interval, memory banks for which there are no pending transactions (e.g., reads or writes) may be refreshed. During a first portion of the interval, refresh may be skipped for memory banks for which transactions are pending. In a second portion of the interval, refreshes are performed on memory banks that have not been refreshed during the interval, which may cause some memory transactions to be delayed.