At 8:43 AM 11/11/96, Paul Bjork wrote:
>Anyone have any experience running a pic down to -60 degrees C?  I
>tried a simple experiment with an externally clock driven PIC16c73
>running a PWM output, all by itself. My can of envirotech chiller
>spray, which says -62 F, killed the PWM output and so, I presume, the
>whole chip.  I haven't yet characterized it accurately below -40 C.
>
>I need a PWM output and a UART, although I could easily emulate them.
>Also an ADC would be nice but not necessary at that temperature.
>
>Is there a temperature range for any Microchip controller below -40 C?
>It would seem that some of the lads driving cars in Iceland would
>appreciate them.


if you can spare the power, add a heater. There are several companies that
sell little heater elements (basically resistors) about the size of large
postage stamps that run on AC or DC.

craig




________________________________________________________
Dr. Craig Hollabaugh
Wireless Scientific, Inc.
1890 South 14th Street
Building 100, Suite 105
Amelia Island, FL 32034
904 261 6977
904 261 2129 fax
wsci@net-magic.net

Or you might know me as
Dr. Craig Hollabaugh
Analog Microelectronics, Georgia Institute of Technology
holla@monique.adgrp.gatech.edu

or

Dr. Craig Hollabaugh
Aerospace Department, University of Texas, Austin
holla@cfdlab.ae.utexas.edu