Hardware layout and configuration
UM2408
32/45
UM2408 Rev 1
JP1 (STLINK
NRST)
OFF
No incidence on ST-LINK STM32F723IEK6 NRST signal.
ON
ST-LINK STM32F723IEK6 NRST signal is connected to GND (ST-LINK
reset to reduce power consumption).
SB49, SB50 (SWO)
OFF, ON
SWO signal of the STM32H7 (PB3) is connected to ST-LINK SWO
input.
OFF, OFF
SWO signal of STM32H7 is not connected.
JP3 (T_NRST)
ON
Board RESET signal (NRST) is connected to ST-LINK reset control I/O
(T_NRST).
OFF
Board RESET signal (NRST) is not connected to ST-LINK reset control
I/O (T_NRST).
SB24, SB13, SB14
(IOREF)
OFF, OFF, ON
IOREF is connected to VDD_MCU
OFF, ON, OFF
IOREF is connected to 3V3_PER
ON, OFF, OFF
IOREF is connected to 3V3
SB20
(SDMMC_D0), SB9
(SDMMC_D1)
ON
These pins are connected to ST morpho connector CN12.
OFF
These pins are disconnected from ST morpho connector CN12 to avoid
stub of SDMMC data signals on PCB.
SB54, SB65 (LD1-
LED)
ON, OFF
Green user LED LD1 is connected to PB0.
OFF,ON
Green user LED LD1 is connected to D13 of Arduino signal (PA5).
OFF, OFF
Green user LED LD1 is not connected.
ON,ON
Forbidden
R74 (LD2-LED)
ON
Yellow user LED LD2 is connected to PB7.
OFF
Yellow user LED LD2 is not connected.
R75 (LD3-LED)
ON
Red user LED LD3 is connected to PB14.
OFF
Red user LED LD3 is not connected.
SB56, SB57 (D11)
H745ZI / H755ZI:
OFF,ON
H745ZI / H755ZI: D11 (Pin 14 of CN7) is connected to STM32H7 PB5
(SPI_A_MOSI/TIM_D_PWM2).
SB66, SB67 (X2
crystal)
OFF
PC14, PC15 are not connected to ST morpho connector CN11. (X3
used to generate 32KHz clock).
ON
PC14, PC15 are connected to ST morpho connector CN11. (R41 and
R42 must be removed).
SB71 (PH0), SB90
(PH1) (Main clock)
OFF, ON
PH0 is not connected to ST morpho
PH1 is connected to ST morpho connector CN11
(MCO is used as main clock for STM32H7 on PH0).
OFF, OFF
PH0, PH1 are not connected to ST morpho connector CN11
(X2, C76, C74, SB3 and SB4 provide a clock as shown in Section
Appendix A: Electrical schematics. In this case SB72 must be
removed).
ON, ON
PH0 and PH1 are connected to ST morpho connector CN11. SB3, SB4,
and SB72 must be removed).
Table 16. Solder bridges (continued)
Bridge
State
(1)
Description
