Specifications
Interfaces
| Interface | Detail |
|---|---|
| Host connection | USB-C receptacle |
| Internal hub | USB 2.0 4-port hub, 24 MHz reference |
| Programmer | STM32F103-based SWD, running Black Magic Debug |
| Serial bridge | FT231X USB-UART, virtual COM port |
| One-wire | Transistor-and-diode circuit on board — no external adapter |
| Target header | 1×6, 1.27 mm — 3 G A R D C |
| ST-Link socket | 2×5, 2.54 mm, clone-style ST-Link V2 mapping |
The programmer and the serial bridge sit behind the hub, so they enumerate as two independent devices at the same time.
Programmer firmware and host software
The programmer runs Black Magic Debug, identifying as
Black Magic Probe (ST-Link/v2) v2.0.0-rc2-69-gd5466940. Use the Black Magic
Debug App for SWD access and ESCape32 tools for the FT231X serial bridge; the
Quick Start Guide covers installation. The ST-Link-style
socket describes the connector wiring, not the USB protocol, so STM32CubeProgrammer
does not drive this programmer.
Power
| Input | 5 V from USB-C VBUS |
| Input fuse | 1 A resettable |
| Target supply | Regulated 3.3 V, filtered by a ferrite bead |
| USB port limit | 0.5 A, ±20% per active downstream port |
Each downstream port has its own current-limited switch. During an overload the switch enters constant-current mode and reports an overcurrent condition to the hub. The available current from the 3.3 V target supply has not been characterized; it is intended for control electronics, not a motor stage.
Protection
- 0.5 A current limiting per downstream USB port, with overcurrent reported to the hub
- 1 A resettable fuse on the input
- ESD/TVS protection on the USB-C data lines, on the signal node and on the reset line
- Ferrite beads on the supply and ground running to the target
Physical
| Length | 76.3 mm |
| Width | 55.9 mm |
| Mounting | 4× M3 (3.2 mm plated) |
| Assembly | Single-sided component assembly |
Need help with your setup? Contact us.