Hardware description
GPIO
LEDs
Buttons
External
memory
Matching
network
Osc
16 MHz
Osc
32.768 kHz
Debug in
nRF5340
Analog switch
nRF only
mode switch
Current
measurement
nRF power
source switch
Li-ion
Interface
MCU
Analog switch
Power supply
circuitry
Power switch
IF MCU USB
Battery
External
supply
Debug out
IF Boot/Reset
RF connector
Antenna
Figure 5: Block diagram
5.3 Power supply
The nRF5340 PDK board PCA10095 has multiple power options.
The power options are:
• USB connector J2 for the interface MCU (5 V)
• Lithium polymer (Li-Po) battery connectors J6 or P27 (2.5–5.0 V)
• VIN 3–5 pin on P20 (3.0–5.0 V)
• External supply on P21 (1.7–3.6 V)
• Coin cell battery
Figure 6: Power supply options (board front)
4406_489 v1.0
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