2024-06-18 12:58 AM - last edited on 2024-06-19 01:56 AM by SofLit
Morning everybody
The microcontroller on my nucleo board NUCLEO-H755ZI-Q is dead after i have used 5V external power to supply it. I don't understand why
2024-06-19 02:44 AM
Read the data sheet and understand "Maximum ratings" Applying 5 Volt to an FT pin when the chip is unpowered will kill the chip as applying 5 Volt to a TT pin when powered.
2024-06-19 04:38 AM
Thanks
Please, what mean "FT pin" and "TT pin" ?
2024-06-19 04:58 AM
Have a look at the datasheet table "Legend/abbreviations used in the pinout table"
2024-06-19 07:47 PM
On which pin or connector did you apply 5v? Try to connect to usb, and see if its getting detected by cube programmer.
2024-06-20 02:02 AM
If the MCU heats up fast, it is broken. Been there, done that 8-)
2024-06-21 02:40 AM
I use pin 6 on CN11 to apply 5V, on JP2, pin 5 and 6 are connected.
There is no détection on cube programmer.
In the last program i loaded on nucleo board, i make LED yellow and green blinking. But they don't blink any more when the board is supply
2024-06-21 02:41 AM
The MCU doesn't heat
