LTE-A Module Series
EG060V-EA Hardware Design
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3.7.2. Turn off the Module
Normally, there are two approaches to turning off the module:
⚫
Turn off the module using the PWRKEY pin.
⚫
Turn off the module using
AT+QPOWD
command.
3.7.2.1. Turn off the Module with PWRKEY
Driving the PWRKEY pin to a low level for at least 800 ms, and the module will power off after the pin is
released. The timing of turning off the module is illustrated in the following figure.
VBAT
PWRKEY
≥
850 ms
Running
Power-down procedure
OFF
Module
Status
STATUS
≥
30 s
Figure 14: Timing of Turning off the Module
3.7.2.2. Turn off the Module with AT Command
It is also a safe way to use
AT+QPOWD
command to turn off the module, which is similar to turning off the
module via the PWRKEY pin. Please refer to
document [1]
for details about the
AT+QPOWD
command.
1. In order to avoid damaging internal flash, please do not switch off the power supply when the module
works normally. Only after the module is shut down by PWRKEY or AT command, the power supply
can be cut off.
2. When turning off the module with AT command, please keep the PWRKEY at high level after
executing the power-off command. Otherwise the module will power on again after its being turned
off.
NOTES
