Hi all

It's quite long time since my last post.

I'm in the stage of designing a product based on '51. The requirements are:

1)One USB connection (to be connected to Personal Computer)
2)Two serial 232 connection (to be connected to two gsm module)
3)Quite large memory space (involve graphic file)

The basic function of this product is to receive any file from PC, 'process' it then send it through GSM module.

At the other end the product will receive data from GSM, 're-process' it and sent to PC

I think this quite high speed processing, seems it involved USB (12Mbits/sec)

I was thinking of using Cypress Chip CY7C68013


Like I said before I'm familiar with AT89C55WD only and the Raisonance (Ride 6.1).

any suggestion or comment are very-very much epreciated

Thank you

Parif