Propeller temp range

Javalin

Evening all,

Anybody know the temperature range the propeller chip "supports".· I guess the usual rule applies - if you can touch it is OK?!

Thanks,

James

Paul Baker

Assume that it's commercial standard range (0 to 70 degrees Centigrade). I don't think the chip has been evaluated for it's temperature range yet, but nearly all are designed to withstand the the commercial range.

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Javalin

Thanks Paul,

What the "Bzzzzz"???

Paul Baker

Oh theres quite a bit of buzz going on, so much I am busy as a bee at the moment (or the giant asian hornet used as my avatar).

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cgracey

All the critical analog pieces of the Propeller were simulated at all corners. The lowest simulation temperature was -40*C and the highest was 125*C. The PLL, for example, was simulated at these extremes (ie VDD = 2.7V, 125*C, and worst-case transistors)·to verify·reliable 160MHz operation.

We had a regular Propeller chip fully runnig at 160MHz a few months ago. How? We fed it 5V and sprayed it with freeze spray. Not something recommendable or practical, but fun to try.

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Chip Gracey
Parallax, Inc.

Paul Baker

Ah so it has been characterized (at least in sims) at the extended temperature range (-40º C to 125º C). Any plans for actual formal·testing of the chips, perhaps even at -55ºC ? Theres a certain caché in the industry to state a chip is rated for military temperatures.

For those unfamiliar with the different ranges, heres a table:



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Post Edited (Paul Baker) : 8/3/2006 7:21:43 PM GMT

Javalin

Thats what the avatar is!

Thanks for the info Chip. Sounds like it was a fun day at the office...