User's Manual

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H380-GL Hardware User Manual Page
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3.6.1 LED1# Signal
LED1# signal is used to indicate the operating state of the module, and the detailed description is as
follows:
Operating Mode of
Module
LED1# Signal
RF function is on
Low level (LED light on)
RF function is off
High level (LED light off)
LED drive circuit is shown in Figure 3-15:
Figure 3-15 LED Drive Circuit
Note:
The current-limiting resistance value of LED light is configured according to driving voltage and
driving current of the light.
3.6.2 WOWWAN#
The module wakes up Host (AP) by WOWWAN# signal when receiving incoming call/SMS or data
request. WOWWAN# signal is drain output; therefore, external pull-up is required, WOWWAN# supports
3.3V or 1.8V external voltage pull-up. WOWWAN# signal is defined as follows:
Operating Mode
WOWWAN# Signal
Ringing/SMS or data
requests
An 1s low level pulse by default
Idle/Sleep
High level
WOWWAN# timing is shown in Figure 3-16: