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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