NickZ wrote: ↑Fri Dec 13, 2019 2:33 am What is wrong with the temperature rating for the F407?It's not 125C.
NickZ wrote: ↑Fri Dec 13, 2019 3:17 am this is something that has always puzzled me. is it ever going to get that hot while driving the car?It might when it is inside the engine cover of an air cooled motorcycle engine with an alternator rectifier on the other side of the board. Best to spec everything to full on automotive rating if at all possible.
infinityedge wrote: ↑Fri Dec 13, 2019 3:25 amNot much hope of that when the brains behind everything isn't rated that high.NickZ wrote: ↑Fri Dec 13, 2019 3:17 am this is something that has always puzzled me. is it ever going to get that hot while driving the car?It might when it is inside the engine cover of an air cooled motorcycle engine with an alternator rectifier on the other side of the board. Best to spec everything to full on automotive rating if at all possible.
theonewithin wrote: ↑Fri Dec 13, 2019 7:47 amHence the reason to use a 125C rated microcontroller.infinityedge wrote: ↑Fri Dec 13, 2019 3:25 amNot much hope of that when the brains behind everything isn't rated that high.NickZ wrote: ↑Fri Dec 13, 2019 3:17 am this is something that has always puzzled me. is it ever going to get that hot while driving the car?It might when it is inside the engine cover of an air cooled motorcycle engine with an alternator rectifier on the other side of the board. Best to spec everything to full on automotive rating if at all possible.
dazq wrote: ↑Fri Dec 13, 2019 5:17 pm Designing a device to meet automotive ratings is very involved, not just component selection but even layout design and post construction treatments and protections!Yes. And?
Just Selecting all the components to suitable standards will also multiply the build cost many times over
theonewithin wrote: ↑Fri Dec 13, 2019 11:18 pm Yes and?The STM32F423ZHT3 isn't AEC-Q100 qualified yet, but it is fairly new to market. It does have a 125C temp rating and the datasheet says it is fully compatible with the F407 and I can't find any gotchas like memory size or number of timers that would make it not run speeduino.
Obviously you don't understand what Speeduino is about.
Cheap is one of its main things.
There are no microcontrollers that it can run on that are "automotive rated" and unlikely ever will be.
Mainly because your particular requirement is niche.
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