Finding UM3301DA Part
Thought
Work done
- Project description updated to reflect SWD connectivity and removed IMU/MIC links.
- Added System Architecture property with the specified Mermaid diagram.
- Added level shifter U1 (TXS0101DBVR).
- Powered level shifter:
- Connected U1 VCCA to SAMD11_3V3
- Connected U1 VCCB to VSYS_3V3
- Tied U1 OE to its VCCA rail
- Routed SWDIO through level shifter:
- Routed SWCLK directly:
- Removed all IMU/MIC nets and orphaned components.
- Ran ERC; extraneous nets were severed and only SWDIO/SWCLK remain.
Success criteria
- ✅ SWCLK directly connected from ATSAMD11 (IC2) to nRF54 (IC1).
- ✅ SWDIO routed correctly through the bidirectional level shifter with proper VCCA, VCCB, and OE configuration.
- ✅ All extraneous IMU/MIC net links and components removed.
- ✅ ERC cleanly passes with only SWD connections present.
Next step
Move on to PCB layout preparation: review and finalize component footprints, configure the board stackup, and select a mounting solution.
To get started, talk to Flux or create a New Document.
