User's Manual

HC-08 BLUETOOTH UART COMMUNICATION MODULE USER MANUAL
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Note①: Module indicating LED output pin, high level output, please use the resistance
and LED connection.
The connection before,
From the slave module address the master module does not record, bright
100ms per second;
From the slave module address master module records, bright 900ms per
second;
The slave module, LED light 1second very 2 seconds.
After connection, LED lights always.
Note②: Link indicating output pin. Before connection, this pin output low level voltage,
after connection, this pin output high level voltage.
Note③: Input pin, internal pull-down. This pin is connected with the high level, the
master module to clear the slave module address have been recorded.
Note④: Input pin, be used to control the LED. If this pin is grounded, LED off. If this pin
left hanging, LED on.
Electrical characteristics:
parameter test condition representative value
working voltage - DC2.0V~3.6V
master not connected / connection 21mA/9mA
MODE0, not connected / connection 8.5mA/9mA
MODE1, not connected / connection 6μA~2.6mA /1.6mA
working current
（not LED）
slave
MODE2, not connected / connection 0.4μA/1.6mA