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.