SimCom SIM5320AL User Manual page 43

Note: The value of resistor Rx depends on LED characteristic.
Table 25: LED status
LED Status
Always On
200ms ON, 200ms OFF
800ms ON, 800ms OFF
Off
Flight mode control
GPIO4 controls SIM5320AL module to enter or exit the Flight mode. In Flight mode, SIM5320AL closes
RF function to prevent interference with other equipments or minimize current consumption. Bidirectional
ESD protection component is suggested to add on GPIO4.
SIM5320AL_User Manual_V1.01
Figure 28: Application circuit
Module Status
Searching Network/Call Connect
Data Transmit
Registered network
Power off / Sleep
Figure 29: Flight mode switch
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Smart Machine Smart Decision
2014-08-20