Solder Bridge Configuration For The Expansion Connector; Table 20. Solder Bridge Configuration - ST STM32U5 User Manual

7.3

Solder bridge configuration for the expansion connector

Table 20 details the solder bridges of the STM32U5 Nucleo-144 board for the expansion connector.
Definition
IOREF selection
SDMMC IO
PC8/PC9
ADC-A3 / QSPI_IO1
PB0
ADC_A1 / QSPI_CS
PA2
ADC-A7 /
VBUS_SENSE
PC2
Zio SAI_D / SPI_B
interface
QSPI_CLK /
TIMER_C_PWM2
UM2861 - Rev 2
Table 20. Solder bridge configuration
Bridge Setting (1)
OFF IOREF not connected to 1V8 power supply
SB16
ON IOREF connected to 1V8 power supply
OFF IOREF not connected to VDD power supply
SB17
ON IOREF connected to VDD power supply
OFF IOREF not connected to 3V3 power supply
SB18
ON IOREF connected to 3V3 power supply
PC8 not connected to CN12 ST morpho pin 2 to avoid stub on
OFF
CN8 Zio SDMMC_D0
SB19
PC8 connected to CN12 ST morpho pin 2 and CN8 Zio pin 2:
ON
SDMMC_D0 signal quality can be impacted
PC9 not connected to CN12 ST morpho pin 1 to avoid stub on
OFF
CN8 Zio SDMMC_D1
SB22
PC9 connected to CN12 ST morpho pin 1 and CN8 Zio pin 4.
ON
SDMMC_D1 signal quality can be impacted
OFF PB0 not used as QSPI_IO1
SB63
ON PB0 used as QSPI_IO1
OFF PB0 not connected to ARDUINO A3
SB64
ON PB0 connected to ARDUINO A3
OFF PB0 not connected to ST morpho pin 34
SB65
ON PB0 connected to ST morpho pin 34
OFF PA2 not connected to Zio QSPI_CS
SB56
ON PA2 connected to Zio QSPI_CS
OFF PA2 not connected to ARDUINO A1
SB57
ON PA2 connected to ARDUINO A1
PC2 not connected to ADC_A7 on Zio connector and used as
OFF
USB Type-C
SB53
ON PC2 connected to ADC_A7 on Zio connector
OFF PA4 not connected to CN7 Zio pin 9 for SAI_D interface
SB35
ON PA4 connected to CN7 Zio pin 9 for SAI_D interface
OFF PA4 not connected to CN7 Zio pin 17 for SPI_B interface
SB38
ON PA4 connected to CN7 Zio pin 17 for SPI_B interface
OFF PB4 not connected to CN7 Zio for SAI_D interface
SB36
ON PB4 connected to CN7 Zio for SAI_D interface
OFF PB4 not connected to CN7 Zio for SPI_B interface
SB43
ON PB4 connected to CN7 Zio for SPI_B interface
PB5 not connected to CN7 Zio for SPI_B interface: Reserved for
OFF
UCPD_DBCC1
SB37
PB5 connected to CN7 Zio for SPI_B interface, shared with for
ON
UCPD_DBn and UCPB_DBCC1
OFF PB10 not used as QSPI_CLK
SB61
Solder bridge configuration for the expansion connector
Comment
®
VBUS_SENSE (SB6)
UM2861
page 38/49