Data Sheet

2 MODULE INTERFACES
Pin number Symbol I/O type Function
11 P26 I/O Support hardware
PWMC
Test point RX2 I/O UART_RX2, which
corresponds to P1
on the internal IC，
prohibition of use
this pin
Test point TX2 I/O UART_TX2, which
is used for
outputting logs
and corresponds
to P0 of the
internal IC
Test point CSN I/O Mode selection
pin. If connected
to the ground
before powered
on, enter the
firmware test
mode. If not
connected or
connected to VCC
before powered
on, enter the
firmware
application mode
Correspond to
P21 on the
internal IC.
Note: P indicates a power supply pin and I/O indicates an input/output pin.
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