Figure 4. Board Layout (Bottom View) - ST STM32F3DISCOVERY User Manual

Hardware layout and configuration
SB2, SB4, SB6, SB9(RESERVED)
SB1, SB3, SB5, SB8(DEFAULT)
SB12 (MCO)
SB14 (X3 crystal)
SB16 (X3 crystal)
SB17 (X1 crystal)
SB18 (X1 crystal)
SB19 (BOOT0)
SB21 (USB USER)
SB22 (USB USER)
Note: If SB12 is ON, SB17 must be OFF and R33 removed to provide the clock source from MCO
correctly.
12/36

Figure 4. Board layout (bottom view)

RoHS
UM1570 Rev 6
SB10 (SWO)
SN
UM1570
SB7 (NRST)
SB11 (STM_RST)
SB13 (RX,TX)
SB15 (RX,TX)
SB20 (B1-USER)
SB23 (B2-RESET)
MSv41787V2