Product Info

LTE Module Series
AG35-QuecOpen
Hardware Design
AG35-QuecOpen_Hardware_Design 49 / 137
Figure 13: Timing of Turning off Module
3.7.2.2. Turn off Module Using AT Command or API Interface
It is also a safe way to use AT+QPOWD command or API interface to turn off the module, which is similar
to turning off the module via PWRKEY Pin.
Please refer to document [2] and [3] for details about the AT command and API function, respectively.
1. In order to avoid damaging the 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 or API
interface, the power supply can be cut off.
2. When turn off module with AT command or API, please keep PWRKEY at high level after the
execution of power off command. Otherwise the module will be turned on again after successfully
turn-off.
3.7.2.3. Turn off Module Using SHDN_N
The following table shows the pin definition of SHDN_N.
NOTES