Data Sheet

2.3.1 DC/DC regulator setup
 When using DC-DC mode, please add L1 / L2.
 DEC4 decoupling capacitor (1F) is already inside the module.
Designator
Value
Description
L1
10H
Chip inductor, IDC,min = 50 mA, ±20%
L2
15nH
High frequency chip inductor ±10%
2.3.2 External 32.768 kHz crystal
 When using external 32.768 kHz crystal oscillator, please add X2 / C1 / C2.
Designator
Value
Description
X2
32.768 kHz
XTAL SMD, 32.768 kHz, CI=9 pF, ±50 ppm
C1, C2
12 pF
Capacitor, NP0, ±2%
2.3.3 NFC-A Tag