any stm32 MCU with 5Vadc?
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‎2020-07-10 07:42 AM
Hello,
I am working on a project and it would be very helpful if I could find a MCU with integrated 5V ADC. I know you can add a voltage divider for the 3.3V ADC but it won't work in my case for this project. Can anyone recommend me something? Thank you:D
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‎2020-07-10 07:55 AM
No STM32 chips can take 5V for VDD, if I'm not mistaken.
A voltage divider for a power supply isn't the right approach. You'd want a linear regulator, or an LDO (low dropout regulator).
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‎2020-07-10 07:57 AM
of course, i meant voltage divider for the adc inputs.
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‎2020-07-10 09:25 AM
"but it won't work in my case for this project. Can anyone recommend me something? Thank you:D" I can recommend a change of starting point. If resistive divider does not suit, there are good op amps which surely can do the job.
Edit: does suit->doesn't suit
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‎2020-07-11 12:39 AM
5V ST MCU? I guess then it is in the STM8A portfolio.
Typically true 5V requires a thicker gate oxide than 3.3V hence either an older terchno or a newer techno with an additional oxide.