STM32G4 MCU Design Blocks

[rishabhroyy]

Changes

Misc

• Hide Digikey labels in stm32-test project schematic
• Created CAN_TRANSCEIVER Design Block

Changed decoupling capacitor layout

• Removed duplicate 10uF capacitors, reference schematic only has 1
• Changed the layout/wiring of the capacitors
• Added a 120 Ω @ 100Mhz Ferrite Bead from Digikey between VDD(s) and VDDA (the reference schematic from STM had it)
• I'm 99% sure I did it right but I'd really appreciate it if you could double check it

Questions

• I couldn't find a button that's exactly the same as ours, but I did find a similar one with J-leads that is 6mm by 6mm. Should I change it out?
  • https://www.digikey.com/en/products/detail/e-switch/TL3301AF160QJ/1144799
• "The unused clock source should be disabled and the unused I/Os should not be left floating. The unused I/O pins should be configured as analog input by software; they should also be connected to a fixed logic level 0 or 1 by an external or internal pull-up or pull-down or configured as output mode using software."
  • Should I do something about this? Like ground every unused pin?
• "Might be worth including a solder bridge pad for a 0-ohm resister that ties it to ground in case we ever want to change that, but honestly I can't see us needing to."
  • It has a resistor to ground, so I'm guessing you mean solder pads for a resistor to +3V3, and I decided to not add it, because after reading the STM pdf I see why you said we'd probably never use it, so it'd probably be unnecessary, but if you actually want me to add it lmk.