Hello,

I'd like to tap the collective wisdom of the list for recommendations
for an embedded microcontroller board that can operate reliably across
(at least) the industrial temperature range of -40C to +85C.  Wider
operating ranges are preferred.

This board is intended to control external communications gear in
austere and rugged environments, spending its life inside a sealed NMEA
enclosure out on the frozen tundra or under the blazing desert sun.

I'd like it to have a processor from the ARM family, although I'm not
particularly opposed to a different processor family if it meets or
exceeds the operating temperature recommendation.  In the past we've run
into trouble where the processor is spec'ed to work across that range
but the oscillator won't start up much below -30C.  We've had other
types of failures at the high (hot) end of the range.

Other particulars:

At a bare minimum, at least 64K of code space (flash-based) and at least
32K of RAM.  Code will likely be written in C/C++.

Support for both RS-422 serial and 10/100 Ethernet.  Other board
peripherals (e.g. A/D, GPIO, etc.) are not needed and would not be used.
 No display or keyboard/keypad are required.

Power will be available on-site, although it might not be particularly
clean or stable, so off-board regulation might also be needed.

Off-list recommendations and comments are welcome.


Thanks,

dan@codesage.com



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