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.
Table 20. Solder bridge configuration
Definition Bridge
Setting
(1)
Comment
IOREF selection
SB16
OFF IOREF is not connected to the 1V8 power supply.
ON IOREF is connected to the 1V8 power supply.
SB17
OFF IOREF is not connected to the VDD power supply.
ON IOREF is connected to the VDD power supply.
SB18
OFF IOREF is not connected to the 3V3 power supply.
ON IOREF is connected to the 3V3 power supply.
SDMMC IO
PC8/PC9
SB19
OFF
PC8 is not connected to ST morpho CN12 pin 2 to avoid stub on
Zio CN8 SDMMC_D0.
ON
PC8 is connected to ST morpho CN12 pin 2 and Zio CN8
pin 2: SDMMC_D0 signal quality can be impacted.
SB22
OFF
PC9 is not connected to ST morpho CN12 pin 1 to avoid stub on
Zio CN8 SDMMC_D1.
ON
PC9 is connected to ST morpho CN12 pin 1 and Zio CN8 pin
4. SDMMC_D1 signal quality can be impacted.
ADC-A3 /
OCTOSPI_IO1
PB0
SB63
OFF PB0 is not used as OCTOSPI_IO1.
ON PB0 is used as OCTOSPI_IO1.
SB64
OFF
PB0 is not connected to ARDUINO
®
A3
ON
PB0 is connected to ARDUINO
®
A3.
SB65
OFF PB0 is not connected to ST morpho pin 34.
ON PB0 is connected to ST morpho pin 34.
ADC_A1 /
OCTOSPI_CS
PA2
SB56
OFF PA2 is not connected to Zio OCTOSPI_CS.
ON PA2 is connected to Zio OCTOSPI_CS.
SB57
OFF
PA2 is not connected to ARDUINO
®
A1.
ON
PA2 is connected to ARDUINO
®
A1.
ADC-A7 /
VBUS_SENSE
PC2
SB53
OFF
PC2 is not connected to ADC_A7 on the Zio connector and is
used as USB Type-C
®
VBUS_SENSE (SB6).
ON PC2 is connected to ADC_A7 on the Zio connector.
Zio SAI_D / SPI_B
interface
SB35
OFF PA4 is not connected to Zio CN7 pin 9 for the SAI_D interface.
ON PA4 is connected to Zio CN7 pin 9 for the SAI_D interface.
SB38
OFF PA4 is not connected to Zio CN7 pin 17 for the SPI_B interface.
ON PA4 is connected to Zio CN7 pin 17 for the SPI_B interface.
SB36
OFF PB4 is not connected to Zio (CN7) for the SAI_D interface.
ON PB4 is connected to Zio (CN7) for the SAI_D interface.
SB43
OFF PB4 is not connected to Zio (CN7) for the SPI_B interface.
ON PB4 is connected to Zio (CN7) for the SPI_B interface.
SB37
OFF
PB5 is not connected to Zio (CN7) for the SPI_B interface:
Reserved for UCPD_DBCC1.
ON
PB5 is connected to Zio (CN7) for the SPI_B interface, shared
with UCPD_DBn and UCPB_DBCC1.
UM2861
Solder bridge configuration for the expansion connector
UM2861 - Rev 5
page 38/49
To Next Page
Loading...
Need help?
General
