2. V
REFP
is not connected to CN12 by default (SB115 OFF).
3. 5V_STLK is the 5V power signal, coming from the ST-LINK/V2-1 USB connector. It rises before the 5V signal of the board.
4. PA13 and PA14 are shared with SWD signals connected to ST-LINK/V2-1. If the ST-LINK part is not cut, it is not
recommended to use them as I/O pins.
5. PG2 to PG15 can have a different I/O level to other I/O because supplied by VDDIO.
UM2581
ST morpho connector CN11 and CN12
UM2581 - Rev 2
page 39/48
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