User's Manual

DFCE-NNN40-DTxR
mbed Kit User Guide Sheet 12 of 15 Aug 11, 2015
Proprietary Information and Specifications are Subject to Change
4.3 HDK Reset
The Reset button (SWDIO) is connected to the embedded Nordic nRF51822; it is working no
matter the power supply is from USB or external power.
4.4 Power Supply
 USB
 External power supply from VIN (5V)
To select power supply, the JP5 is used to switch power source. Short pin 1 and pin 2 to power
from USB, short pin 2 and pin 3 to power from VIN externally