Solder Bridge Configuration; Table 16. Sb Configuration - ST STM32L5 Nucleo-144 board User Manual

6.15

Solder bridge configuration

Table 16 details the solder bridges of the STM32L5 Nucleo-144 board.
Definition
ST-LINK USB Power
bypass mode
3V3_PER
3V3 LDO output
MCU VDDSMPS
MCU_VREFP
HSE CLK selection
USB
UM2581 - Rev 2
Table 16.
(1)(2)
Bridge Setting
OFF
SB1
ON
OFF
SB2
ON
OFF
SB3
ON
OFF
SB4
ON
OFF
SB5
ON
OFF
SB115
ON
OFF/OFF
SB6/SB7
ON/ON
OFF
SB143
ON
OFF
SB142
ON
OFF
SB145
ON
OFF
SB8
ON
OFF
SB144
ON
OFF
SB10
ON
OFF
SB11
ON
OFF/OFF
SB137/SB138
ON/ON
SB configuration
Comment
USB power switch protection enable
USB power switch by-passed (not recommended)
3V3 for peripheral not available (not recommended)
Used to provide 3V3 to some peripheral without impacting the
IDD measurement
U7 LDO output does not provide 3V3. An external 3V3 is needed.
LDO protection is active when external 3V3 is used
U7 LDO output provides 3V3
VDDSMPS input not supplied (not recommended)
VDDSMPS input connected to VDD_MCU
VREFP input not supplied (not recommended)
VREFP input connected to VDDA
VREFP not connected to Zio, ARDUINO
VREFP connected to Zio, ARDUINO
HSE NOT provided by External HSE CLK X3
HSE provided by External HSE CLK X3
ST-LINK MCO NOT used for HSE CLK
ST-LINK MCO used for HSE CLK
PH0 NOT connected to morpho connector MCO usage
PH0 connected to morpho connector
PH1 NOT connected to morpho connector
PH1 connected to morpho connector I/O usage
PC2 not connected to USB Type-C
ADC_A7 on Zio connector
PC2 connected to USB Type-C
PC2 not connected to ADC_A7 on Zio connector used as USB
™
Type-C VBUS_SENSE
PC2 connected to ADC_A7 on Zio connector
PA15 connected to STM USB Type-C
used as CC1
™
USB Type-C port protection is bypassed (not recommended
debug only)
PB15 connected to STM USB Type-C
used as CC2
™
USB Type-C port protection is bypassed (not recommended
debug only)
PA11/PA12 used as USB_FS_P/N interface
PA11/PA12 used as I/O connected to morpho connector CN12
UM2581
Solder bridge configuration
®
pin 6
®
pin 6
™
VBUS_SENSE used as
™
VBUS_SENSE
™
port protection and
™
port protection and
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