Quectel EG915U-EU - Turn off the Module with PWRKEY; Turn off the Module with at Command

LTE Standard Module Series
EG915U-EU_Hardware_Design 35 / 81
3.6.1. Turn off the Module with PWRKEY
Driving the PWRKEY to a low-level voltage for at least 3 s, then the module will execute power-down
procedure after the PWRKEY is released.
VBAT
PWRKEY
30 s
3 s
Running
Power-down procedure
OFF
Module
Status
Figure 12: Power-down Timing
3.6.2. Turn off the Module with AT Command
It is safe to use AT+QPOWD command to turn off the module, which is equal to turn off the module via
PWRKEY Pin.
Please refer to document [2] for details about AT+QPOWD command.
.
1. To avoid damaging internal flash, do not switch off the power supply when the module works
normally. Only after shutting down the module with PWRKEY or AT command can you cut off the
power supply.
2. When keeping the PWRKEY to the ground and the AT command cannot be used to turn off, the
module can only be forced to turn off by cutting off the VBAT power supply. Therefore, we
recommend that you can turn on or turn off the module by pulling up and pulling down the
PWEKEY instead of keeping the PWRKEY to the ground.
The time for the module to log out of the network is related to the current network status, so the
specific shutdown time is related to the network status, please pay attention to the shutdown time in
the design.
NOTE