Skip to main content
oeliks
Associate III
Jan 12, 2020 8:24 PM UTC
Solved

Where to find - lowest Vcc value for mcu

Hi, Can someone help me find the minimum voltage Vcc of stm32f103c8.

​

Lo​west voltage that will allow for maximum clocks frequency. And wont interfere with usb (pullups at data line to vcc).And adc.

​

2.4 V is minimum when using adc. But will it run at max clocks at that voltage?

This topic has been closed for replies.
Piranha
PiranhaBest answer
Principal III
Jan 12, 2020 8:52 PM UTC

Datasheet sections 5.1.1 and 5.3.1 answers this perfectly.

3 replies

Piranha
PiranhaBest answer
Principal III
Jan 12, 2020 8:52 PM UTC

Datasheet sections 5.1.1 and 5.3.1 answers this perfectly.

oeliks
oeliksAuthor
Associate III
Jan 12, 2020 9:03 PM UTC

Ok, so min is 2,4V - 2.3.9 min vdda when using adc.

​

Thanks

Tesla DeLorean
Guru
Jan 12, 2020 9:12 PM UTC

Surely better parts, providing VDDUSB to keep drivers within specs.

People doing low voltage / low power typically using L0 or L4 at this point.​

Tips, Buy me a coffee, or three.. PayPal Venmo (See Profile) Up vote any posts that you find helpful, it shows what's working..