From: Lukasz Majewski <lukma@denx.de>
To: linux-mtd@lists.infradead.org
Subject: Problem with NAND memory data retention
Date: Thu, 27 Apr 2017 12:25:02 +0200 [thread overview]
Message-ID: <20170427122502.285d16ba@jawa> (raw)
Dear All,
I'd like to ask you for sharing your experience with NAND Flash devices
- which may be older that their data retention time.
I've a problem with Flash NAND memory (Samsung 128Mx8).
In the data sheet [1] the manufacturer claims that it has 10 years for
data retention. The device equipped with it is a bit older than 10
years.
How one can diagnose that data retention time for NAND Flash has been
exceeded?
Is that:
- The number of bit flip errors on a RW page so large that ECC cannot
fix it?
- Or are whole RW pages erased (0xFF)/corrupted/cleared (0x00)?
- Or any other evidence?
Thanks in advance for your help.
[1] -
http://www.sst-ic.com/File/Seriea/PDF/100923163334f47b2ce6-13b7-43d0-9b8c-ec1c75ca2c6f.pdf
Best regards,
Lukasz Majewski
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
next reply other threads:[~2017-04-27 10:25 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-27 10:25 Lukasz Majewski [this message]
2017-04-27 10:54 ` Problem with NAND memory data retention Ricard Wanderlof
2017-04-27 13:04 ` Lukasz Majewski
2017-04-27 13:13 ` Andrea Adami
[not found] ` <CAAQYJAtBGn_-8z-1NQbVYPiVm6W3zquibLK9jutWWKGn0RBWuQ@mail.gmail.com>
2017-04-28 8:36 ` Lukasz Majewski
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