2025-05-14 2:10 AM
Solved! Go to Solution.
2025-05-14 6:04 PM
Hello,
Generally speaking, when we use the external 3V3 from connectors (CN8 pin 7 or CN11 pin 16), we don't need the power supply from STLINK though the USB connector. That means, the communication from STLINK or the virtual com are disable.
Of course, you can connect the USB cable as STLINK side power supply. At the same time, the external 3V3 from connectors (CN8 pin 7 or CN11 pin 16) when JP2 isn't mounted. it's safe for different power supply.
Please double check the MB1364-H723ZG-E01 Schematics for your application.
B.R
Eric
2025-05-14 6:04 PM
Hello,
Generally speaking, when we use the external 3V3 from connectors (CN8 pin 7 or CN11 pin 16), we don't need the power supply from STLINK though the USB connector. That means, the communication from STLINK or the virtual com are disable.
Of course, you can connect the USB cable as STLINK side power supply. At the same time, the external 3V3 from connectors (CN8 pin 7 or CN11 pin 16) when JP2 isn't mounted. it's safe for different power supply.
Please double check the MB1364-H723ZG-E01 Schematics for your application.
B.R
Eric
2025-05-15 1:19 AM
Thanks Eric, this is very informative. I will keep the dev board powered by 3V3 with no jumpers, and plug in the USB as needed for debugging and programming.