ST STM32G4 Nucleo-64 - Page 27

Solder bridge control
Solder
bridge (SB)
State
(1)
Description
(1)
LSE CLK
selection
SB31
&
SB30
ON LSE provided by external LSE 32.768 kHz CLK X2.
OFF LSE not provided by external LSE 32.768 kHz CLK X2.
SB32
ON
PC14-OSC32_IN connected to ST morpho connector I/O
usage (CN7 pin 25).
OFF PC14-OSC32_IN not connected to ST morpho connector.
SB29
ON
PC15-OSC32_OUT connected to ST morpho connector I/O
usage (CN7 pin 27).
OFF
PC15-OSC32_OUT not connected to ST morpho
connector.
PB9 on ARD_A4 SB34
ON PB9 connected to ARD_A4 and connected to CN7 pin 36.
OFF
PB9 not connected to ARD_A4 and connected to CN7 pin
36.
PC1 on ARD_A4 SB35
ON PC1 connected to ARD_A4 and connected to CN7 pin 36.
OFF PC1 not connected to ARD_A4 and connected to CN7 pin 36.
PC0 on ARD_A5 SB36
ON PC0 connected to ARD_A5 and connected to CN7 pin 38.
OFF PC0 not connected to ARD_A5 and connected to CN7 pin 38.
PA15 on ARD_A5 SB37
ON PA15 connected to ARD_A5 and connected to CN7 pin 38.
OFF
PA15 not connected to ARD_A5 and connected to CN7
pin 38.
IOREF and 3V3 connection SB39
ON IOREF connected to 3V3 power supply.
OFF IOREF not connected to 3V3 power supply.
T_SWDIO
on PA13
SB40
ON T_SWDIO connected to PA13.
OFF T_SWO not connected to PA13.
T_SWCLK
on PA14
SB41
ON T_SWCLK connected to PA14.
OFF T_SWCLK not connected to PA14.
1. The default SB state is in bold.
All the other solder bridges present on the STM32G4 Nucleo-64 board are used to configure several I/Os and
power-supply pins for compatibility of features and pinout with the target STM32G4 supported.
UM2505
Solder bridges
UM2505 - Rev 2
page 27/43