Product Info

LTE Module Series
EG61-NA Hardware Design
EG61-NA_Hardware_Design 36 / 77
3.7.2.1. Turn off Module Using the PWRKEY Pin
Driving the PWRKEY pin to a low level voltage for at least 650ms, the module will execute power-down
procedure after the PWRKEY is released. The power-down scenario is illustrated inthe following figure.
VBAT
PWRKEY
≥ 30s
≥ 650ms
RUNNING
Power-down procedure
OFF
Module
Status
STATUS
Figure 13: Timing of Turning off Module
3.7.2.2. Turn off Module Using AT Command
It is also a safe way to use AT+QPOWDcommandto turn off the module, which is similar to turning off the
module via PWRKEY pin.
Please refer todocument [2] for details about the AT+QPOWDcommand.
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 module with AT command, please keep PWRKEY at high level after the execution of
power-off command. Otherwise the module will be turned on again after successful turn-off.
3.8. Reset the Module
The RESET_N pin can be used to reset the module.The module can be reset by driving RESET_N to a
low level voltage for 150ms~460ms.
NOTES