Product Info

3. Pin Information
3.1. Pin configuration
3.2. Pin description
Pin
Symbol
Type
Default
Description
1
GND
G
Vss GND
2
ANT_SEL
I
Input
Connect to GPIO signal to control antenna switch
3
LB
NFC tag antenna input B
4
LA
NFC tag antenna input A
5
PIO0
IO
GPIO0
GPIO0 — General Purpose digital Input/Output 0
USART0_SCK — Universal Synchronous/Asynchronous
Receiver/Transmitter 0 - synchronous clock
USART1_TXD — Universal Synchronous/Asynchronous
Receiver/Transmitter 1 - transmit data output
PWM0 — Pulse Width Modulator output 0
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