Table 7. Tag‑Connect
™
footprint (CN10) pinout for TC2050-IDC-NL cable
JP1 Source Function
[1-2] STLK
5 V is supplied from the ST-LINK USB connector (CN8)
(1)
[3-4] EXT
5 V is supplied from the ARDUINO
®
connector (CN5).
[5-6] USB 5 V is supplied from the user USB connector (CN2).
1. The default setting is in bold.
If EXT is used to power this board, this power source must comply with the standard EN‑60950‑1:
2006+A11/2009 and must be safety extralow voltage (SELV) with limited power capability.
6.5.2 Supplying the board with the STLINK-V3EC USB connector (CN8)
Green LED (LD1) lighting confirms the presence of the 5 V power supply.
Figure 11. STLK (CN8) selection for 5 V power
DT59224V1
Power source
header (JP1)
ST-LINK
USB (CN8)
UM3223
Hardware layout and configuration
UM3223 - Rev 1
page 14/37