公开(公告)号：US09007842B2

公开(公告)日：2015-04-14

申请号：US13832633

申请日：2013-03-15

Applicant: Seagate Technology LLC

Inventor： Zhengang Chen ,  Jeremy Werner ,  Ying Quan Wu ,  Erich F. Haratsch

IPC: G11C11/34 ,  G11C16/10

CPC classification number: G11C16/10 ,  G11C16/3459 ,  G11C16/349

Abstract: A method for determining a retention time in a solid state device (SSD), comprising the steps of providing a plurality of write operations to a memory, determining a reference voltage for each of the write operations, determining a difference between (i) the reference voltage after each of the write operations and (ii) a target reference voltage and if the difference is above a predetermined value, generating a flag indicating an excessive retention has occurred.

Abstract translation: 一种用于确定固态设备（SSD）中的保留时间的方法，包括以下步骤：向存储器提供多个写入操作，为每个写入操作确定参考电压，确定（i）参考 每个写入操作之后的电压和（ii）目标参考电压，并且如果差异高于预定值，则产生指示过度保持的标志。