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From: Charles Manning <manningc2@actrix.gen.nz>
To: linux-mtd@lists.infradead.org
Cc: M Sudharshana-A18475 <sudharshana@motorola.com>
Subject: Re: NAND Low level flash routiens
Date: Sat, 22 Oct 2005 07:02:13 +1300	[thread overview]
Message-ID: <200510220702.13494.manningc2@actrix.gen.nz> (raw)
In-Reply-To: <B7803DC652E2F9458758AEBB6A5FD60F19526E@ZMY16EXM67.ds.mot.com>

On Friday 21 October 2005 16:44, M Sudharshana-A18475 wrote:
> Hi,
> 	I do believe NAND flash manufacturers give low level flash
> routines to erase/program data on the flash memory. While providing
> them, they do mention unit of erase is of minimum 4K. 
I have never heard of a NAND with 4K erase units (unless these were the very 
old 256-byte page devices).
Most have programming pages used today are 512+16 or 2k+64 byte pages with 
erase sizes of 16k and 128K respectively.

> Would this still 
> hold good with low level flash routines that some embedded device
> manufacturers? Or would this erase be of the unit of sector size which
> are usually of 64K/128K/256K ?

I suggest you read the Toshiba NAND flash appliocation guide. it will tell you 
almost everything you need to know.

      reply	other threads:[~2005-10-21 17:55 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-10-21  3:44 NAND Low level flash routiens M Sudharshana-A18475
2005-10-21 18:02 ` Charles Manning [this message]

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