Re: [Gumstix-users] Operating temperature ranges

[Kirk M. <km...@ec...>]

eeek - just when I was going to install one on a=20
glacier in Norway which goes down to -12C in the winter! Hmmm.....
Kirk
At 19:20 05/01/2006, you wrote:
>On Jan 5, 2006, at 8:46 AM, Doug Sutherland wrote:
>
>>The PXA255 Data Sheet indicates temperature range of 0-85c or -40-100c
>>for the extended temp version. However, Gordon has indicated that
>>Gumstix is commercial (not industrial) temp grade. Having said that,
>>this doesn't mean it won't work outside the 0-85c range, it indicates
>>that Intel doesn't guarantee it will work.
>
>Yes, I can confirm that the PXA (and the other stuff like flash, RAM,
>etc) is all rated to 0-85=BAC.  We can swap in the "industrial" rated
>-40 to 85=BAC parts for custom orders.  As James and Doug both point
>out though -- it might work outside those temp ranges, but it's just
>not rated to work there; effectively your failure rate outside that
>temp range will be higher -- inside that temp range, the failure rate
>will be whatever MTBF it is that Intel says it'll be.
>
>>The strange thing about some of these standards is that the silicon
>>may not be any different, it may just go through more stringent tests.
>>I read somewhere that the different between say a 200Mhz and 400Mhz
>>processor is often just ... testing.
>
>The only difference I can determine between the 200 and 400MHz PXAs
>is the silkscreen label on the outer package of the chip.  There is
>no way at all in software to tell the difference between 200 and 400.
>
>C
>
>
>
>-------------------------------------------------------
>This SF.net email is sponsored by: Splunk Inc. Do you grep through log=
 files
>for problems?  Stop!  Download the new AJAX search engine that makes
>searching your log files as easy as surfing the  web.  DOWNLOAD SPLUNK!
>http://ads.osdn.com/?ad_idv37&alloc_id865&opick
>_______________________________________________
>gumstix-users mailing list
>gum...@li...
>https://lists.sourceforge.net/lists/listinfo/gumstix-users

-
http://www.ecs.soton.ac.uk/~km=20