Yahoo Groups archive
Thread
2012-01-25 by ki0bk
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
2012-01-25 by ki0bk
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] >
2012-01-25 by wagnerj@proaxis.com
> 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 > > The fact that the application is aviation should have little or no bearing on the device choice. Just like non-av applications, you select the device based on the peripherals and (RAM & flash) memory space and need for I/O pins. Jim Wagner Oregon Research Electronics
2012-01-25 by David Kelly
On Jan 25, 2012, at 10:13 AM, wagnerj@proaxis.com wrote: > The fact that the application is aviation should have little or no bearing > on the device choice. Just like non-av applications, you select the device > based on the peripherals and (RAM & flash) memory space and need for I/O > pins. Agree that for the most part it *shouldn't* matter that the ultimate goal is an aviation product. But we know nothing about the product/project, and even less about the requirements for electrical and environmental conditions. Or the requirements for coding standards and testability. I suspect if the goal is to be space flight capable the AVR may be one of the harder routes to take. Can't say I've heard of any rad-hardened AVRs, but also can't say I've looked. -- David Kelly N4HHE, dkelly@HiWAAY.net ============================================================ Whom computers would destroy, they must first drive mad.
2012-01-25 by Cat C
I would start prototyping with the biggest one and move to production with the (next) smallest that has all I need.That would give you some flexibility when you need more.On the other hand, cost of chip may be irrelevant to cost of project so you could stick with biggest.Anyway, that's to decide after you have working prototype. Cat > To: AVR-Chat@yahoogroups.com > From: jccordill@sbcglobal.net > Date: Wed, 25 Jan 2012 15:34:29 +0000 > 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]
2012-01-25 by tim gilbert
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]2012-01-25 by wagnerj@proaxis.com
Jim - There are a number of AVRs that are "automotive grade". You will find them in Atmel's miserable web site in the 8-bit mcu section. THese have extended temperature specs, if I recall correctly. For example: http://www.atmel.com/dyn/products/devices.asp?category_id=163&family_id=607&subfamily_id=1723&source=left_nav lists the Mega88/168 Automotive with a temp range of -55C to +150C. Jim Wagner Oregon Research Electronics
> 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] >> > > >
2012-01-25 by tim gilbert
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]
>
[Non-text portions of this message have been removed]2012-01-25 by tim gilbert
True, but where do you buy them? Digikey and Mouser only give you a -40C option on the search windows and even Atmel's "Check Inventory" function returns "no parts were found" (at least on the few I've checked in the past). I'm sure if you want to buy 100K of them, Atmel would accommodate you. Regards, Tim Gilbert JEM Innovation Inc. 303-926-9053 (office) 303-437-4342 (cell) www.jeminnovation.com www.pdksolutions.com
----- Original Message -----
From: wagnerj@proaxis.com
To: AVR-Chat@yahoogroups.com
Sent: Wednesday, January 25, 2012 10:42 AM
Subject: Re: [AVR-Chat] Re: aviation use of atmega's
Jim -
There are a number of AVRs that are "automotive grade". You will find them
in Atmel's miserable web site in the 8-bit mcu section. THese have
extended temperature specs, if I recall correctly.
For example:
http://www.atmel.com/dyn/products/devices.asp?category_id=163&family_id=607&subfamily_id=1723&source=left_nav
lists the Mega88/168 Automotive with a temp range of -55C to +150C.
Jim Wagner
Oregon Research Electronics
> 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]
>>
>
>
>
[Non-text portions of this message have been removed]2012-01-25 by wagnerj@proaxis.com
Then, I would check with your local rep! Find out, for sure, rather than guess. Jim Wagner
> True, but where do you buy them? Digikey and Mouser only give you a -40C > option on the search windows and even Atmel's "Check Inventory" function > returns "no parts were found" (at least on the few I've checked in the > past). > > I'm sure if you want to buy 100K of them, Atmel would accommodate you. > > > Regards, > > Tim Gilbert > JEM Innovation Inc. > 303-926-9053 (office) > 303-437-4342 (cell) > www.jeminnovation.com > www.pdksolutions.com > > > ----- Original Message ----- > From: wagnerj@proaxis.com > To: AVR-Chat@yahoogroups.com > Sent: Wednesday, January 25, 2012 10:42 AM > Subject: Re: [AVR-Chat] Re: aviation use of atmega's > > > > Jim - > > There are a number of AVRs that are "automotive grade". You will find > them > in Atmel's miserable web site in the 8-bit mcu section. THese have > extended temperature specs, if I recall correctly. > > For example: > > http://www.atmel.com/dyn/products/devices.asp?category_id=163&family_id=607&subfamily_id=1723&source=left_nav > > lists the Mega88/168 Automotive with a temp range of -55C to +150C. > > Jim Wagner > Oregon Research Electronics > > > 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] > >> > > > > > > > > > > > > [Non-text portions of this message have been removed] > >
2012-01-25 by Scott Stephens
I was wondering if I could do ISP and debug on a Samsung S3xxxx (ARM926E) chip with my mk2 jtagice usb box. Thanks
2012-01-25 by Leon Heller
On 25/01/2012 18:47, Scott Stephens wrote: > I was wondering if I could do ISP and debug on a Samsung S3xxxx > (ARM926E) chip with my mk2 jtagice usb box. It probably won't be supported by any ARM development tools. Have a look at suitable tool chains and you will find out what JTAG interfaces are supported. Leon -- Leon Heller G1HSM
2012-01-26 by Alex A
Atmel does have some Rad Hard processors good from -55C to 125C but these are 32-bit SPARC V8. There are also the FPGAs and ASICs for the military and avionics but those are probably a bit of overkill. --- In AVR-Chat@yahoogroups.com, "ki0bk" <jccordill@...> wrote:
> > 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] > > >
2012-01-26 by David Kelly
On Jan 26, 2012, at 9:35 AM, Alex A wrote: > Atmel does have some Rad Hard processors good from -55C to 125C but these are 32-bit SPARC V8. There are also the FPGAs and ASICs for the military and avionics but those are probably a bit of overkill. A very common way to fly a fully-testable rad-hard CPU is to load it in an FPGA. Maybe hundreds or thousands of dollars each, but its a workable solution. Sometimes one does what one has to do to get the job done. -- David Kelly N4HHE, dkelly@HiWAAY.net ============================================================ Whom computers would destroy, they must first drive mad. [Non-text portions of this message have been removed]