AT89C51SND2C / AT83SND2C

Has anyone here got any experience with these chips? I'm looking into trying 
to make a Compact Flash mp3 player using:-

1. AT89C51SND2C / AT83SND2C - Microcontroller with MP3 decoder, DAC and 
amplifier, as well as compact flash interface and USB facility to update 
firmware - http://www.atmel.com/dyn/products/product_card.asp?part_id=3527
2. Nokia 3310 Display (Philips PCD8544) - 84x48 B/W screen - 
http://www.myplace.nu/mp3/nokialcd.htm
3. 5way Joystick - 
http://www.jelu.se/shop/product_info.php?currency=EUR&products_id=93
4. LTC3429 - Boost Convertor - 
http://www.linear.com/pc/productDetail.do?navId=H0,C1,C1003,C1042,P2346&action=viewall

However, I'm finding several problems. Firstly those microcontrollers seem 
completely unavailable from any shops because they're completely new, also 
they don't have a development kit yet. Another problem will be their 
package, BGA100 and I can't seem to find any applicable adapters for this.

Any thoughts, comments, answers? Thanks in advance

Pete 

"Pete" <competer_uk@yahoo.co.uk> wrote in message
news:cr3ceu$thb$1@news.freedom2surf.net...
> Has anyone here got any experience with these chips? I'm looking into
trying
> to make a Compact Flash mp3 player using:-
>
> 1. AT89C51SND2C / AT83SND2C - Microcontroller with MP3 decoder, DAC and
> amplifier, as well as compact flash interface and USB facility to update
> firmware - http://www.atmel.com/dyn/products/product_card.asp?part_id=3527
> 2. Nokia 3310 Display (Philips PCD8544) - 84x48 B/W screen -
> http://www.myplace.nu/mp3/nokialcd.htm
> 3. 5way Joystick -
> http://www.jelu.se/shop/product_info.php?currency=EUR&products_id=93
> 4. LTC3429 - Boost Convertor -
>
http://www.linear.com/pc/productDetail.do?navId=H0,C1,C1003,C1042,P2346&acti
on=viewall
>
> However, I'm finding several problems. Firstly those microcontrollers seem
> completely unavailable from any shops because they're completely new, also
> they don't have a development kit yet. Another problem will be their
> package, BGA100 and I can't seem to find any applicable adapters for this.
>
> Any thoughts, comments, answers? Thanks in advance
>

Are you sure you want to make this? For not too much money you can buy a
complete mp3 player that's likely much smaller that what you can achieve, at
least not for the same money. It will save you a lot of hassle I think.
You can't really mount BGA's yourself, and you need a fine line multilayer
PCB (e.g. expensive) to even get it routed in a reasonable space. Getting
hold of these chips will be difficult, especially as a private person. And
they will be expensive.

Have you looked into the SND1? This one comes in a TQFP144 package I
believe, which is far easier to work with.  I have a little player with this
chip and a development kit; though I don't have any experience with it, it's
collecting dust in a box.

The golden days of DIY MP3 players are gone I guess.

Jeroen