MIPI10 pin STDC14 pin CN4 Function
8 10 T_JTDI
Not used by SWD protocol, Target JTDI (T_JTDI) using JTAG protocol,
only for external tools
9 11 GNDDetect GND detect for plug indicator, used on SWD and JTAG neither
10 12 T_NRST
Target NRST using SWD protocol or Target JTMS (T_JTMS) using
JTAG protocol
- 13 T_VCP_RX Target RX used for VCP (must be UART dedicated to bootloader)
- 14 T_VCP_TX Target TX used for VCP (must be UART dedicated to bootloader)
6.4 Power supply
The power supply can be provided by five different sources:
• A host PC connected to CN1 through a USB cable (default setting)
• An external 7 V - 12 V (VIN) power supply connected to CN7 pin 24
• An external 5 V (E5V) power supply connected to CN7 pin 6
• An external 5 V USB charger (5V_USB_CHGR) connected to CN1
• An external 3.3 V power supply (3V3) connected to CN7 pin 16
UM2505
Power supply
UM2505 - Rev 2
page 13/43
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