Andy Neil wrote:
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has USB mass storage, multimedia cards, IDE/ATAPI, and kitchen sink:

http://www.atmel.com/dyn/produ...rt_id=3526

No experience with it, but there it is!

I am using this chip and its Atmel-supplied software right now. My application is a data acquisition system which stores data to a FAT file system, which is accessed via USB.

I have had a lot of issues with the supplied software, which gives you the FAT file system, and drivers for various memory chips if you purchase one of their evaluation kits. BEWARE - the code has bugs, and you must requests the latest version from ATMEL!

Also, if your application must be very robust, I would not recommend using Atmel's system with NAND flash. They don't do any wear-leveling and are not power-fail tolerant. The chip is probably much better suited for interfacing with removeable media, which contains all the protections and wear-leveling on-chip.

For $200, you can get a reference design for an MP3 player (see Digikey) that includes the software I just mentioned. It's a pretty good start and gives you a lot of capability. That reference design has a 64MB on-board NAND flash. Also be aware that their firmare does NOT support a drive format through the Windows interface. You MUST call their format routine through the embedded code. Also be aware that the code takes up much of the available on-chip memory.