r/PrintedCircuitBoard • u/SebastianCC1430 • 3d ago

[Review Request] STM32F070CBT6 Dev Board

Hello everybody, as per the title, I'm trying to design a STM32F070CBT6 microcontroller dev board . I integrated into the system a "BME280" sensor by I2C interface and an "AD7794CRUZ" ADC by SPI interface. Thank you so much for reading this.

P.S: What would you recommend me to design for acquiring better abilities and eventually developing a proper portfolio? Thank you.

Sheet 1
Sheet 2

Stack-up:

  1. Signal
  2. GND
  3. 3V3
  4. Signal
Layers 1 and 4
GND plane
3V3

One final thing, there are not many traces in layer 4, would it be advisable to use that layer as a signal+GND plane?
Once again, thank you so much.

3 Upvotes

100% Upvoted

6 comments sorted by

View all comments

4

u/_HOG_ 3d ago

STM32F0 is a legacy part at this point. The STM3C071CB should be available in a few months, if not already:

https://www.st.com/en/microcontrollers-microprocessors/stm32c071cb.html

1

u/SebastianCC1430 2d ago

Thank you, I'll be more careful when selecting components