nRF52840 Preview DK v0.9.x

Solder bridge configuration

This complete overview of solder bridges on the nRF52840 Preview DK helps you decide if you want to change the default state to achieve a different function.

Table 1. Solder bridge configuration
Solderbridge 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 Open Short to bypass LED power switch
SB10 Closed Cut to disconnect the QSPI memory from P0.23
SB11 Closed Cut to disconnect the QSPI memory from P0.19
SB12 Closed Cut to disconnect the QSPI memory from P0.20
SB13 Closed Cut to disconnect the QSPI memory from P0.21
SB14 Closed Cut to disconnect the QSPI memory from P0.22
SB15 Closed Cut to disconnect the QSPI memory from P0.17
SB20 Open Short to enable P0.23 as a normal GPIO
SB21 Open Short to enable P0.19 as a normal GPIO
SB22 Open Short to enable P0.20 as a normal GPIO
SB23 Open Short to enable P0.21 as a normal GPIO
SB24 Open Short to enable P0.22 as a normal GPIO
SB25 Open Short to enable P0.17 as a normal GPIO
SB30 Open Short to reset the interface MCU
SB31 Open Short to bypass the USB detect switch
SB32 Open Short to permanently enable the I2C pull-up resistors
SB33 Closed Cut to permanently disable the I2C pull-up resistors
SB34 Open Short to bypass the power switch on the USB power
SB35 Open Short to bypass the power switch on the coin cell battery power
SB36 Open Short to bypass the power switch on the external supply power
SB37 Open Short to bypass the interface MCU power switch
SB38 Closed Cut to disable VDD power to the Arduino interface
SB39 Open Short to bypass the power switch for regulator, coin cell, or external supply
SB40 Closed Cut for current measurements of the VDD_nRF
SB41 Closed Cut for current measurements of the VDD_nRF_HV
SB42 Open Short to connect IF Boot/Reset button to nRF52840 reset pin when the interface MCU is disconnected
SB43 Open Short to connect IF Boot/Reset button to RESET pin on the Arduino interface
SB44 Open Short to connect the RESET pin on the Arduino interface to the nRF52840 reset pin
SB45 Open Short to connect the RESET pin on the Arduino interface to the nRF52840 reset pin when the interface MCU is disconnected
SB46 Open Short to connect the RESET pin on the Arduino interface to the interface MCU Boot when the interface MCU is disconnected
SB47 Open Short to enable power supply of the external device when using the debug out connector
SB48 Open Short to bypass the interface MCU USB power switch
SB49 Open Short to connect VDD_UTMI to VDD_SAM
SB50 Open Short to bypass the signal switch of the CTS line between nRF52840 and the interface MCU
SB51 Open Short to bypass the signal switch of the RTS line between nRF52840 and the interface MCU
SB52 Open Short to bypass the signal switch of the RxD line between nRF52840 and the interface MCU
SB53 Open Short to bypass the signal switch of the TxD line between nRF52840 and the interface MCU
SB54 Open Short to bypass the signal switch of the SWDIO line between nRF52840 and the interface MCU
SB55 Open Short to bypass the signal switch of the SWDCLK line between nRF52840 and the interface MCU
SB56 Open Short to bypass the signal switch of the RESET line between nRF52840 and the interface MCU
SB57 Open Short to bypass the signal switch of the SWO line between nRF52840 and the interface MCU
SB65 Closed Cut to disable the pull-up resistor of the IF Boot/Reset button
SB80 Open Short to bypass the power switch for the VBUS of nRF52840
SB81 Open Short to bypass the power switch for VDD_HV of nRF52840

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