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27
NC
28
NC
29
NC
30
SYS_RST_N
31
NC
32
UART_TXD0
33
UART_RXD0
34
NC
35
NC
36
GPIO33
37
ANT
38
GND
1.6 Interface definitions
Figure 2 Module interface definition
NC
NC
NC
I
Module reset, low level effective, reset time ≥ 500ms
NC
O
Serial 0 output
I
Serial 0 input
NC
NC
I/O
Wifi indicator light
I/O
optional, default unavailable
Ground
Ground
4
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