Users Manual

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2.3. Reflow Soldering Curve
3. Module Power Consumption Description
To control the power consumption of the module, when the serial port enable pin (enable) is at a
low level, the UART of the module is closed；At this time, the serial port data and AT commands
cannot be sent normally, but the serial port can receive the Bluetooth transparent data normally.
After the data transparent transmission is completed, the UART will continue to remain active for 5s
to provide the user MCU with a response time (if necessary), and then the serial port will
automatically close . When the serial port enable pin (enable) is at a high level, the module UART is
in an active state, and the serial port function can be used normally. The following table shows the
module power consumption corresponding to different UART states in each broadcast interval.
Bluetooth advertising
interval（ms）
UART state
Average power consumption
（uA）
50
On
760
Off
165
100
On
650
Off
128
200
On
560
Off
100
500
On
525
Off
85
1000
On
520
Off
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