Hardware description
4.11 Solder bridge and test point overview
The nRF52 DK has a range of solder bridges for enabling or disabling functionality on the DK. It also has
test points available for use. Changes to these are not needed for normal use of the DK.
The following table is a complete overview of the solder bridges on the nRF52 DK.
Solder bridge Default Function
SB1 Closed Cut to disconnect the 32.768kHz on P0.01.
SB2 Closed Cut to disconnect the 32.768kHz on P0.00.
SB3 Open Short to enable P0.01 as normal GPIO.
SB4 Open Short to enable P0.00 as normal GPIO.
SB5 Closed Cut to disconnect LED1.
SB6 Closed Cut to disconnect LED2.
SB7 Closed Cut to disconnect LED3.
SB8 Closed Cut to disconnect LED4.
SB9 Closed Cut for current measurements.
SB10 Open Short to bypass the reverse voltage protection diode on the USB
power.
SB11 Open Short to bypass the reverse voltage protection diode on the coin-cell
battery power.
SB12 Open Short to bypass the reverse voltage protection diode on the external
supply power.
SB13 Closed Cut to disconnect P0.05 from the connector interface.
SB14 Closed Cut to disconnect P0.06 from the connector interface.
SB15 Closed Cut to disconnect P0.07 from the connector interface.
SB16 Closed Cut to disconnect P0.08 from the connector interface.
SB17 Open Short to connect P0.21 to the connector interface RESET.
SB18 Open Short to permanently enable the I/O expander.
SB19 Closed Cut to permanently disable the I/O expander.
SB20 Closed Cut to isolate SWDIO from nRF52832 to the interface MCU.
SB21 Closed Cut to isolate SWDCLK from nRF52832 to the interface MCU.
SB22 Closed Cut to isolate P0.05 from nRF52832 to the interface MCU.
SB23 Closed Cut to isolate P0.06 from nRF52832 to the interface MCU.
SB24 Closed Cut to isolate P0.07 from nRF52832 to the interface MCU.
SB25 Closed Cut to isolate P0.08 from nRF52832 to the interface MCU.
SB26 Closed Cut to isolate P0.18 from nRF52832 to the interface MCU.
SB27 Closed Cut to isolate P0.21 from nRF52832 to the interface MCU.
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