Hardware description
4.10 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 32.768 kHz on P0.01
SB2 Closed Cut to disconnect the 32.768 kHz 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
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 P0.21 from nRF52832 to the interface MCU
SB27 Closed Cut to isolate P0.18 from nRF52832 to the interface MCU
SB29 Closed Cut to disable power for interface MCU
SB30 Closed Cut to isolate P0.17 from I/O expander interrupt line
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