公开(公告)号：US20170344295A1

公开(公告)日：2017-11-30

申请号：US15168835

申请日：2016-05-31

Applicant: SanDisk Technologies LLC

Inventor： Liron Sheffi ,  Yuval Kenan ,  Amir Shaharabany ,  Yacov Duzly

IPC: G06F3/06 ,  G06F21/62 ,  G11C16/16

CPC classification number: G06F3/0623 ,  G06F3/0601 ,  G06F3/062 ,  G06F3/0652 ,  G06F3/0688 ,  G06F11/1004 ,  G06F12/14 ,  G06F21/00 ,  G06F21/6209 ,  G06F21/78 ,  G06F21/79 ,  G06F2221/2143 ,  G11C11/5635 ,  G11C16/06 ,  G11C16/14 ,  G11C16/16 ,  G11C16/22 ,  G11C16/32

Abstract: A system and method is disclosed for fast secure destruction or erasure of data in a non-volatile memory. The method may include identifying a fast erase condition, such as an unauthorized access attempt, and then applying a fast erase process to a predetermined number of blocks of the non-volatile memory. The fast erase process may be implemented by applying an erase voltage for less than a full duration needed to place the blocks in a full erase state, but sufficient to make any data in those blocks unreadable. The system may include a non-volatile memory having a plurality of blocks and a controller configured to sequentially apply the erase voltage to a predetermined portion of the blocks for less than a time needed to fully erase those blocks such that the controller may rapidly make data unreadable without taking the full time to completely erase those blocks.