* NAND Low level flash routiens
@ 2005-10-21 3:44 M Sudharshana-A18475
2005-10-21 18:02 ` Charles Manning
0 siblings, 1 reply; 2+ messages in thread
From: M Sudharshana-A18475 @ 2005-10-21 3:44 UTC (permalink / raw)
To: linux-mtd
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. 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 ?
Thanks
Sudhi
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: NAND Low level flash routiens
2005-10-21 3:44 NAND Low level flash routiens M Sudharshana-A18475
@ 2005-10-21 18:02 ` Charles Manning
0 siblings, 0 replies; 2+ messages in thread
From: Charles Manning @ 2005-10-21 18:02 UTC (permalink / raw)
To: linux-mtd; +Cc: M Sudharshana-A18475
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.
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