Hardware description
The reverse voltage protection diodes for the regulator and external supply add a voltage drop to the
supply voltage of the circuit. To avoid this voltage drop, the diodes can be bypassed by shorting one or
more solder bridges.
Power source Protection bypass Voltage level
USB SB10 3.3 V
External supply SB12 1.7 V - 3.6 V
Table 2: Protection diode bypass solder bridges
Figure 9: Protection diode bypass solder bridges
Note: Connect only one power source at the time. Shorting the solder bridges removes the reverse
voltage protection.
4.4 Connector interface
Access to the nRF52832 General-Purpose Input/Output (GPIO)s is available from connectors P2, P3, P4, P5,
and P6.
The P1 connector provides access to ground and power on the nRF52 DK.
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