nRF52840 Preview DK v0.11.x

Solder bridge configuration

This complete overview of solder bridges on the nRF52840 Preview DK helps to change the default state.

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 peripheral 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 P0.17
SB14 Closed Cut to disconnect the QSPI memory from P0.21
SB15 Closed Cut to disconnect the QSPI memory from P0.22
SB16 Closed Cut to disconnect QSPI memory power supply from VDD_PER
SB17 Open Short to connect QSPI memory power supply to VDD
SB18 Open Short to connect QSPI memory power supply to VDD_nRF
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 P0.17 as a normal GPIO
SB24 Open Short to enable P0.21 as a normal GPIO
SB25 Open Short to enable P0.22 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 Closed Cut to disconnect IF Boot/Reset button from 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 interface 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 Closed Cut to disconnect the nRF52840 CTS line from the signal switch and interface MCU
SB51 Closed Cut to disconnect the nRF52840 RTS line from the signal switch and interface MCU
SB52 Closed Cut to disconnect the nRF52840 RxD line from the signal switch and the interface MCU
SB53 Closed Cut to disconnect the nRF52840 TxD line from the signal switch and interface MCU
SB54 Closed Cut to disconnect the nRF52840 SWDIO line from the signal switch and interface MCU
SB55 Closed Cut to disconnect the nRF52840 SWDCLK line from the signal switch and interface MCU
SB56 Closed Cut to disconnect the nRF52840 RESET line from the signal switch and interface MCU
SB57 Closed Cut to disconnect the nRF52840 SWO line from the signal switch and the interface MCU
SB65 Closed Cut to disable the pull-up resistor of the IMCU_BOOT line
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