Hardware description
Solderbridge Default Function
SB42 Closed Cut to disconnect IF Boot/Reset button from nRF52833 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
nRF52833 reset pin
SB45 Open Short to connect the RESET pin on the Arduino interface to
the interface nRF52833 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 nRF52833 CTS line from the signal switch and
interface MCU
SB51 Closed Cut to disconnect the nRF52833 RTS line from the signal switch and
interface MCU
SB52 Closed Cut to disconnect the nRF52833 RxD line from the signal switch and
the interface MCU
SB53 Closed Cut to disconnect the nRF52833 TxD line from the signal switch and
interface MCU
SB54 Closed Cut to disconnect the nRF52833 SWDIO line from the signal switch
and interface MCU
SB55 Closed Cut to disconnect the nRF52833 SWDCLK line from the signal switch
and interface MCU
SB56 Closed Cut to disconnect the nRF52833 RESET line from the signal switch
and interface MCU
SB57 Closed Cut to disconnect the nRF52833 SWO line from the signal switch and
the interface MCU
SB58 Closed Cut to disconnect voltage follower from external supply when SW10
is in ON position
SB59 Open Solder to connect debug in and trace reference voltage to VDD
SB60 Closed Cut to disconnect debug in and trace reference voltage from
VDD_nRF'
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 nRF52833
SB81 Open Short to bypass the power switch for VDD_HV of nRF52833
Table 8: Solder bridge configuration
4452_198 v1.0.1
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