Connector
Pin number
Signal name
Solder bridge
STM32L4 pin
Function
CN12
11
PC1_C
-
-
PC1
INT
12
PH0_C
-
-
PH0
RESET
13
PC0_C
-
-
PC0
ADC1_IN1
14
PC9_C
-
-
PC9
TIM3_CH4
15
5V
-
-
-
Power
16
GND
-
-
-
Power
17
PA8_C
-
-
PA8
I/O
18
PA5_C
-
-
PA5
I/O
19
PA15_C
-
-
PA15
I/O
20
PB14_C
-
-
PB14
I/O
1. Default solder bridge state is shown in bold
8.15
Jumper description
The STM32 current measurement can be done on JP1. By default, the JP1 jumper is ON.
For the current measurement configuration, the JP1 jumper is OFF and an ammeter must be placed on JP1.
JP2 connects the NRST of the SWD protocol and the NRST of the LBAD0ZZ1SE module. By default, the JP2
jumper is ON.
JP3 is the ST-LINK serial port network. It can be connected to other devices to read data through jumpers. By
default, the JP3 jumper is OFF.
JP4 is the ST-LINK NRST network, which can control the status of ST-LINK MCU. By default, the JP4 jumper is
OFF.
CN4 is used to select the ST-LINK network. By default, CN4[1-2] and CN4[3-4] are ON.
CN5 is used for ST-LINK debug connector. By default, the CN5 jumper is OFF.
UM2743
Jumper description
UM2743
-
Rev 1
page 31/58
