Nordic Semiconductor nRF52 DK - Page 23

Hardware description
Solder bridge Default Function
SB28 Open Short to reset 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.
SB31 Closed
Cut and connect one side to VDD to erase interface MCU flash.
1
SB32 Open
Short to supply power through the Debug OUT connector.
2
SB33 Open Short to connect 5 V from connectors to VBUS.
SB34 Closed Cut to disconnect the 5 V to connectors.
SB35 Closed Cut to disconnect VDD on connectors.
SB36 Closed Cut to disconnect IF Boot/Reset button from the IMCU.
SB41 Closed No function on current BOM.
SB42 Open Short to connect IF Boot/Reset button to RESET pin on the Arduino
interface.
SB43 Open Short to connect the RESET pin on the Arduino interface to the
nRF52832 P0.21/RESET pin.
SB44 Open No function on current BOM.
SB45 Open No function on current BOM.
Table 8: Solder bridge configuration for nRF52 DK (v1.0.0 and higher)
CAUTION:
1
This function is not recommended because it bricks your DK unless you have the tools
needed to reprogram the interface MCU.
Note:
2
While this is shorted, you cannot program and debug the on-board device.
The following table is a complete overview of the test points on the nRF52 DK.
4397_500
23