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 /
OCTOSPI_IO1
PB0
ADC_A1 /
OCTOSPI_CS
PA2
ADC-A7 /
VBUS_SENSE
PC2
Zio SAI_D / SPI_B
interface
UM2861 - Rev 5
Table 20. Solder bridge configuration
Bridge Setting (1)
OFF IOREF is not connected to the 1V8 power supply.
SB16
ON IOREF is connected to the 1V8 power supply.
OFF IOREF is not connected to the VDD power supply.
SB17
ON IOREF is connected to the VDD power supply.
OFF IOREF is not connected to the 3V3 power supply.
SB18
ON IOREF is connected to the 3V3 power supply.
PC8 is not connected to ST morpho CN12 pin 2 to avoid stub on
OFF
Zio CN8 SDMMC_D0.
SB19
PC8 is connected to ST morpho CN12 pin 2 and Zio CN8
ON
pin 2: SDMMC_D0 signal quality can be impacted.
PC9 is not connected to ST morpho CN12 pin 1 to avoid stub on
OFF
Zio CN8 SDMMC_D1.
SB22
PC9 is connected to ST morpho CN12 pin 1 and Zio CN8 pin
ON
4. SDMMC_D1 signal quality can be impacted.
OFF PB0 is not used as OCTOSPI_IO1.
SB63
ON PB0 is used as OCTOSPI_IO1.
OFF
PB0 is not connected to ARDUINO
SB64
ON
PB0 is connected to ARDUINO
OFF PB0 is not connected to ST morpho pin 34.
SB65
ON PB0 is connected to ST morpho pin 34.
OFF PA2 is not connected to Zio OCTOSPI_CS.
SB56
ON PA2 is connected to Zio OCTOSPI_CS.
OFF
PA2 is not connected to ARDUINO
SB57
ON
PA2 is connected to ARDUINO
PC2 is not connected to ADC_A7 on the Zio connector and is
OFF
used as USB Type-C
SB53
ON PC2 is connected to ADC_A7 on the Zio connector.
OFF PA4 is not connected to Zio CN7 pin 9 for the SAI_D interface.
SB35
ON PA4 is connected to Zio CN7 pin 9 for the SAI_D interface.
OFF PA4 is not connected to Zio CN7 pin 17 for the SPI_B interface.
SB38
ON PA4 is connected to Zio CN7 pin 17 for the SPI_B interface.
OFF PB4 is not connected to Zio (CN7) for the SAI_D interface.
SB36
ON PB4 is connected to Zio (CN7) for the SAI_D interface.
OFF PB4 is not connected to Zio (CN7) for the SPI_B interface.
SB43
ON PB4 is connected to Zio (CN7) for the SPI_B interface.
PB5 is not connected to Zio (CN7) for the SPI_B interface:
OFF
Reserved for UCPD_DBCC1.
SB37
PB5 is connected to Zio (CN7) for the SPI_B interface, shared
ON
with UCPD_DBn and UCPB_DBCC1.
Solder bridge configuration for the expansion connector
Comment
®
A3
®
A3.
®
A1.
®
A1.
®
VBUS_SENSE (SB6).
UM2861
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