Table 11. Solder Bridge Configuration On Mb1880 - ST STM32WL Series User Manual

Solder bridge (SB)
SB31
SB32
SB33
SB34
SB35
SB36
SB37
SB38
1. The default configuration is in bold.
On MB1880, the solder bridge SB1 is located on the top side of the board.
Solder bridge control
SB1
1. The default configuration is in bold.
UM3127 - Rev 1
(1)
Function State
STMOD+_I2C ON I2C2_SDA connected to pin 10 of the STMod+ connector
2_SDA
OFF I2C2_SDA not connected to pin 10 of the STMod+ connector
(PA11)
ALERT/INT pin TEMP_INT signal from the STM32WL5MOC module connected
ON
of U14
temperature
sensor
TEMP_INT signal from the STM32WL5MOC module connected to
OFF
(PA1)
U14 ON
temperature
OFF
sensor supply
CMOS serial ON
flash memory
OFF
supply
ON
E3V3
OFF
MEMORY_HOLD signal from the STM32WL5MOC module
HOLD pin of
ON
CMOS serial
flash memory
MEMORY_ HOLD signal from the STM32WL5MOC module not
OFF
(PB7)
ON Pin 2 of the DEBUG connector is connected to the ground.
Pin 2 of
DEBUG
Pin 2 of the DEBUG connector is not connected to the ground
OFF
connector
ON
E5V
OFF
Table 11. Solder bridge configuration on MB1880
Function (1)
State
5V voltage supply connected to the V
ON
5V on V
BUS
5V voltage supply not connected to the V
OFF
Hardware layout and configuration
(1)
Description
to the ALERT/INT pin of U14.
the ALERT/INT pin of U14.
U14 supplied with 3V3_MEMs.
U14 not supplied.
U10 supplied with 3V3.
U10 is not supplied.
E3V3 connected to 3V3.
E3V3 is not connected to 3V3.
connected to the HOLD pin of U10.
connected to the HOLD pin of U10.
(leaving floating).
E5V connected to 5V.
E5V is not connected to 5V.
(1)
Description
BUS
®
USB-C connector.
BUS
®
USB-C connector.
UM3127
supply of the
supply of the
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