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Can Stm32 chips working at -55 degree? Is screening possible?

Question asked by chen.richie on Aug 7, 2015
Latest reply on Aug 7, 2015 by Clive One
We are trying to design a circuit which may need to work at -55 degree. And our current design is with stm32, which is very powerful.

Here comes my questions:
1. Does stm32f4 series have -55 degree (temperature) versions?
2. If not, can we use screening to find out MCUs which may be able to work at that temperature?

Thanks a lot!