Quectel BG77 - Turn off Module; Turn off Module Using the PWRKEY Pin; Turn off Module Using at Command; Reset the Module

LPWA Module Series
BG77 Hardware Design
BG77_Hardware_Design 32 / 76
3.6.2. Turn off Module
Either of the following methods 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 AT+QPOWD command.
3.6.2.1. Turn off Module Using the PWRKEY Pin
Driving the PWRKEY pin to a low level voltage for a duration between 650ms and 1500ms, the module
will execute power-down procedure after the PWRKEY is released.
The power-off timing is illustrated in the following figure.
VBA T
PWRKEY
≥1.3s
650ms~1500ms
RUNNING
Power-down procedure
OFF
Module
Status
STATUS
V
IL
≤0.45V
Figure 8: Timing of Turning off Module
3.6.2.2. Turn off Module Using 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 PWRKEY pin.
Please refer to document [2] for details about AT+QPOWD
command.
3.7. Reset the Module*
RESET_N, which is multiplexed from PWRKEY, is used to reset the module. Due to platform limitations,
the chipset has integrated the reset function into PWRKEY.