Data Sheet

2 Module interfaces
Pin number Symbol Type Function
2 PB11 I/O Port for debugging
the PTI (Packet
trace interface),
which corresponds
to Pin 31
3 SWDIO I/O Communication
interface for JLINK
burning, which can
be con󰍓gured as a
GPIO in the
application, and
corresponds to PF1
(Pin 2)
4 SWCLK I/O Clock signal of
JLINK burning,
which can be
con󰍓gured as GPIO
in the application,
and corresponds
to PF0 (Pin 1)
5 F_RX I/O Receiving port of
production, which
corresponds to PF2
(Pin 3)
6
PF4
I/O
Used as GPIO and
correspond to PF4
(Pin 5)
7 F_TX I/O Transmitting port
of production,
which corresponds
to PF5 (Pin 6)
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