Re: Best low cost uP for full Linux
- From: Stef <stef33d@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Fri, 26 Sep 2008 16:39:12 +0200
In comp.arch.embedded,
m <martin.usenet@xxxxxxxxx> wrote:
I am trying to select a uP to build into an embedded device. Here are
the requirements:
- Run full Linux with MMU support
- External bus support for more than 256MB of RAM, preferably DDR2
- Support for 64MB+ of NAND FLASH
- Support for 8MB of NOR FLASH
- I2C (2 ports ideal, one is OK)
- SPI
- USB Host x2
- 10/100 Ethernet
- At least two serial ports, four even better
- LCD interface highly desirable
- 16 to 32 available parallel I/O pins
- Expansion bus for external peripherals
- Low cost
Something like the Coldfire MC5329 would be perfect, except that this
chip does not have a MMU and you are forced to use uCLinux, which I
want to avoid due to the lack of memory protection and other
limitations.
I'd appreciate a shove in the right direction.
The Atmel AT91RM9200 has a lot of the listed features, I know it has
MMU, USB HOST (1 or 2), 10/100 Ethernet, SPI, 3/4 Serial, I2C. It has
some support for FLASHes, check atmel site for details, they're not
all in my head at this time. :-)
While you're there, check the other ARM9 chips as well.
--
Stef (remove caps, dashes and .invalid from e-mail address to reply by mail)
"I'll rob that rich person and give it to some poor deserving slob.
That will *prove* I'm Robin Hood."
-- Daffy Duck, Looney Tunes, _Robin Hood Daffy_
.
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