Hardware layout and configuration
UM2206
28/55
UM2206 Rev 3
9.13 Jumper
configuration
The default jumper positions are showed in
Table 4: Default jumper settings
.
Table 11
describes the other available jumper settings.
9.14 Configuration
of
the solder bridges
Table 12
shows the solder bridge configurations and settings.
Table 11. Jumper settings
Jumper / CN
Function
State
(1)
1. Default jumper state is shown in bold.
Comment
CN2
T_SWCLK
T_SWDIO
ON [1-2] ON [3-4]
ST-LINK/V2-1 enable for on-board
MCU debugger
OFF
ST-LINK/V2-1 functions enabled for
external CN2 connector
JP1
STLK_RST
ON [1-2]
Used to reset ST-LINK MCU
OFF
Normal use
JP2/JP3
GND
OFF
GND probe
JP4
T_NRST
ON
ST-LINK able to reset STM32
OFF
ST-LINK not able to reset STM32
JP5
5 V Power selection
ON [1-2]
5 V from ST-LINK
ON [3-4]
5 V from V
IN
7-12 V
ON [5-6]
5 V from E5V
ON [7-8]
5 V from USB_CHG
OFF
No 5 V power, use 3.3 V
JP6
I
DD
measurement
ON [1-2]
V
DD
= 3.3 V
OFF
To connect external source (ULPBench
probe as an example)
JP7
V
DD_MCU
= 3.3 V
ON [1-2]
V
DD_MCU
voltage selection = 3.3 V
ON [2-3]
V
DD_MCU
voltage selection = 1.8 V
OFF
No V
DD_MCU
(forbidden)
JP8
V
DD_IN_SMPS
ON [1-2]
1.1 V ext SMPS input power supply
OFF
1.1 V ext SMPS not powered. Legacy
configuration
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