NAND Low level flash routiens

Charles Manning manningc2 at
Fri Oct 21 14:02:13 EDT 2005

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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