User's Manual

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LTE Module
EC25-A User Manual
EC25-A_User_Manual Confidential / Released 30 / 7
3.7.2. Turn off Module
The following procedures can be used to turn off the module:
 Normal power down procedure: Turn off the module using the PWRKEY pin.
 Normal power down procedure: Turn off the module using command AT+QPOWD.
3.7.2.1. Turn off Module Using the PWRKEY Pin
Driving the PWRKEY to a low level voltage, the module will execute power-down procedure after the
PWRKEY is released. The power-down scenario is illustrated in the following figure.
VBAT
PWRKEY
TBDTBD
RUNNING
Power-down procedure
OFF
Module
Status
STATUS
(OD)
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 command AT+QPOWD to turn off the module, which is similar to turning off
the module via PWRKEY Pin.
Please refer to document [2] for details about the AT command of AT+QPOWD.
3.8. Reset the Module
The RESET_N can be used to reset the module. You can reset the module by driving the RESET_N to a
low level voltage for time between Treset_min and Treset_max.