Cheapest 8-bit eval board with Ethernet?

Oops, please ignore the subject line. I started thinking one thing then started typing another :)

Would one of the low-end Rabbits (e.g. RCM2200) not do? Seems to meet all your requirements in terms of Ethernet and TCP/IP, I/O, serial port, RAM (battery-backed), and cost.

Steve

Hmm. I'll take a look at it, but I suspect this would be a bad choice - I'd never go to production with Rabbit, and their baroque development environment would mean an irritating porting effort to the real hardware.

Fred Eady's got a bunch of embedded ethernet modules at

Cheers, Alf

If you're charging for the time it takes you to find the board, the cheapest one is the first good one you find.

If you're not charging to find one (why?), but are charging for the time it takes you to make it work, the cheapest one is the one with the most generous set of resources and demonstration software.

Unless you're talking a "prototype" run of 500 or so.

But you knew that, so I assume the directive is coming from your client...

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

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"Applied Control Theory for Embedded Systems" came out in April.
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Production != "a few quick prototypes" ;).

It's not really that bad. I've just done a small production run with the

2200; I managed to find a way of organising my files such that they were pretty close to ANSI C. (I needed to be able to port the whole thing on to a different platform later too.) I found some aspects irritating, sure, but I confess I've developed a grudging respect for both the hardware and the software environment.

Steve

Good choice, but remove the 149 device and replace with the 1611 .. 10KB RAM and DMA

Take a look at TINI (From MAXIM). I found it to be a great network platform. iButton makes for great human interface. They can be programmed in Java as well.

Sandeep

larwe a écrit :

Have a look at this:

If you are looking at Freescale, you'd be much better off with the MCF5223x family now rather than the MC9S12NE64. You get a much more powerful 32-bit ColdFire cpu, with more memory and better development tools, for a similar price and with the same convenience of having the MAC and PHY built into the device. From the Freescale website, I could only see fairly large and expensive development cards - a minimal board with the device should be no more than about a square inch area.

Yes, but the 9s12ne64 demo board cost is 75$, and 52330 eval board cost is 300$.

Exactly - the Coldfire device is a much better choice of chip, but the Freescale cheap demo board is not available yet. There might well be other boards available with these devices, however - I've only looked at the Freescale page.

I guess it also depends on how much the customer is determined to use the lowest price demo cards regardless of the devices on the card, and how much they want to use a card with a device that would be realistic for production systems.