LPWA Module Series
BG770A-GL Hardware Design
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Ensure that VBAT is stable before pulling down PWRKEY pin and keep the interval no less than 30 ms.
3.6.3. Turn off Module
Either of the following methods can be used to turn off the module normally:
Turn off the module through PWRKEY.
Turn off the module through
AT+QPOWD
.
3.6.3.1. Turn off Module through PWRKEY
Drive the PWRKEY pin low for 650–1500 ms and then releasing it, the module will execute power-down
procedure.
The power-down timing is illustrated in the following figure.
Figure 8: Power-down Timing
3.6.3.2. Turn off Module through AT Command
It is also a safe way to use
AT+QPOWD
to turn off the module, which is similar to turning off the module
with PWRKEY.
See
document [4]
for details about
AT+QPOWD
.
NOTE
