AVR-Chat

Jim,
The typical military temperature specs can make it a challenge. We ran into this several years ago when designing a system that was to fly on the Predator drone.  It had to operate -70C!
 
We got the customer to promise that they'd never power up at less than -40C. That gave our internal heaters time to warm things up. Of course, when your design is attached to a jet engine, you basically have an infinite amount of power available and keeping things warm wasn't a problem.  

Now, keeping things cool at the high end, (I think the spec was +75C), was another story.

Regards,


Tim Gilbert
JEM Innovation Inc.
303-926-9053 (office)
303-437-4342 (cell)
www.jeminnovation.com
www.pdksolutions.com





  ----- Original Message ----- 
  From: ki0bk 
  To: AVR-Chat@yahoogroups.com 
  Sent: Wednesday, January 25, 2012 10:11 AM
  Subject: [AVR-Chat] Re: aviation use of atmega's


    
  Thanks Tim, 
  That's what I'm concerned about. In addition one of the requirements specifies the unit needs to work down to -45 degrees C
  and the atmel parts are only spec'd to -40C. 
  I'll email you offline and report back to the group what I find for others to use.
  -Jim

  --- In AVR-Chat@yahoogroups.com, "tim gilbert" <tim@...> wrote:
  >
  > Jim,
  > Do you need to meet FAA requirements of DO-160 and DO-178B? 
  > 
  > Would be happy to chat off-line.
  > 
  > Regards,
  > 
  > 
  > 
  > Tim Gilbert
  > JEM Innovation Inc.
  > 303-926-9053 (office)
  > 303-437-4342 (cell)
  > www.jeminnovation.com
  > www.pdksolutions.com
  > 
  > 
  > ----- Original Message ----- 
  > From: ki0bk 
  > To: AVR-Chat@yahoogroups.com 
  > Sent: Wednesday, January 25, 2012 8:34 AM
  > Subject: [AVR-Chat] aviation use of atmega's
  > 
  > 
  > 
  > I'm getting ready to start a project the will be used in an aircraft, we are looking at using an atmega48/88/168 depending on code size and wanted to know if anyone has done this before. If so, what mega avr did you use? 
  > -Jim
  > 
  > 
  > 
  > 
  > 
  > [Non-text portions of this message have been removed]
  >



  

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