STM32F030C8T6. Reboot problem with high temperature.

[RMach.1]

I have this sentence and please give me a feedback that is it true or not true.

"The problem was that DTS had what appeared to be a bad batch of STM32F030C8T6 processors that would fail to reboot after a power off/on cycle once they reached higher temperatures."

I have errata dm00091791-stm32f030x4x6x8xc-device-errata-stmicroelectronics.pdf but ther is no this information.

[TDK]

> "The problem was that DTS had what appeared to be a bad batch of STM32F030C8T6 processors that would fail to reboot after a power off/on cycle once they reached higher temperatures."

Sounds like someone was grasping at straws for an explanation. I wouldn't believe it without evidence, but I'm sure the person who wrote it believes it. These chips are very prolific and I haven't seen evidence suggesting they don't work correctly in their specified temperature range.

[Ozone]

I tend to agree with TDK.

IMHO the first suspects are the clock chain, and the Flash setup.

Electrical and timing parameters shift significantly at high temperatures.

Either the clock setup (I suppose HSE) fails, or Flash timing/waitstate settings do not suffice at high temperatures.

[waclawek.jan]

> once they reached higher temperatures

Surely any chip fails to work properly, once it reaches "higher temperatures".

JW

[RMach.1]

One remark.

The higher temperatures means 40'C.

[waclawek.jan]

Junction (chip) or ambient?

JW

[RMach.1]

Ambient.

Problem has been solved.

CPU will be repalaced.

Thank you for help.