Does anyone have performance data of STM32L432 family of chips at extreme low temperatures (i.e. -55`C)?

[APowe.2]

I'm looking to use this controller for aerospace applications and was wondering if there was any performance data at the -55`C temperature extreme. A required warm-up period or something similar is what I'm expecting to need, but any more detailed information would be helpful.

[Peter BENSCH · Accepted solution]

The STM32 are guaranteed to work in the temperature range given in the datasheet and by the order number, while the lowest temperatur is always -40 DEGC.

The particular datasheet also lists the storage temperature range, which is for the STM32L432: -65...150 DEGC.

Does it answer your question?

Regards

/Peter

[APowe.2]

Hey Peter,

I'm really looking for information on whether the STM32 is functional, at all, down to -55`C. I fully understand that functionality is not guaranteed at that temperature. The application we're evaluating these parts for will require testing at this low temperature. The STM32 would be inside a housing that will get warmer than ambient, but on start-up the chip would be subject to that temperature. I'm looking to see if there's any data that you might have to indicate what performance could be expected and whether a warm-up period would be required to achieve partial or full functionality.

Thank you for your help!

[Uwe Bonnes]

At that temperature, a lot can happen. Often ceramic capacitors (Z, Y, Z ceramics loose temperature. What about having some mechanical temperature switch, heating up to -40 and only then starting the electronic?

[TDK]

If operating at -55 C is critical to your application, I would never use a part which is only specced to -40C. Even if you fully test it, there is no guarantee that it will work in future production batches of chips. Aerospace applications tend to be lower quantity and higher cost--find a more appropriate chip.

[Dvorak.Peter]

While -55 C may seem cold to some, there are the brave overclockers with liquid nitrogen.

Overclocking to 7GHz with Liquid Nitrogen  Hands-On  Computex 2017

https://youtu.be/WwJvHJ1hyto