Data Sheet
Table Of Contents
18
P03
I/O
Programmable input and output pins
19
P02
I/O
Programmable input and output pins
20
NC
NC
NC
21
NC
NC
NC
Some pin IO port functions:：
IO
Function description
P10
Bluetooth connection status output pin：
connected（high level）
not connected（low level）
P11
Function input button pin：
button short press：disconnect bluetooth
LED status indicator (pin P12 is lit at high level)：
LED display
Connection
Status
(500ms/on, 500ms/off)
not connected
Long bright
connected
4. Application schematic diagram