[time-nuts] Form Factor and such, Big Picture

Javier Herrero jherrero at hvsistemas.es
Thu Dec 23 07:40:21 UTC 2010


El 23/12/2010 05:24, Bob Bownes escribió:
>
>
> ARM or other general purpose CPU is interesting, but at what cost for
> complexity and/or software development? It would require RAM, IO
> support, and boot rom at the very least. Not insurmountable, but at a
> cost to complexity.
>
If you are not planifying to use an embedded operating system like 
uClinux or embedded linux, no need for external RAM or ROM. There are 
lot of ARMs from several manufacturers with 256kB flash and 64kB RAM or 
more for <$20, with a nice set of peripherals (USB, UARTs, CAN, even 
Ethernet without the need of an external phy). Software tools can range 
from free (GCC + eclipse) to quite expensive (IAR).

If you plan to use an embedded operating system, then more RAM, more ROM...

We've an embedded processor board that includes a Blackfin, 16 or 32MB 
flash, 32 or 64MB RAM and a 250,000 gate FPGA, and belive me, it is not 
so expensive (and if it would be interesting for a project like this, we 
could try to make a series with special time-nuts price) 
http://www.hvsistemas.com/en/prod/H8606.html

Regards,

Javier

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Javier Herrero                            EMAIL: jherrero at hvsistemas.com
Chief Technology Officer
HV Sistemas S.L.                          PHONE:         +34 949 336 806
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