
3
MODULE INTERFACES
Pin No.
Symbol
I/O Type
Function
5
GPIO13
I/O
Use as GPIO,
which is
connected to
MTCK (pin12) on
the internal
Note:
• “P” represents the power pin,
• “I/O” represents the input and output pin.
3.3 Definition of the Test Points
Pin No.
Symbol
IO Type
Function
-
TP1
I/O
GPIO2, use to
check log
-
TP 2
I/O
GPIO0;Testing the
module
production.
-
TP3
RST
Hardware reset
pin; Cannot clear
the distribution
network
information of
Wi-Fi.
-
TP4
U0TXD
User serial port;
Information
output from the
serial port can be
used for testing
the module
production.
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