Product Info

LPWA Module Series
BG95 Series Hardware Design
BG95_Series_Hardware_Design 42 / 106
2. PWRKEY output voltage is 1.5 V because of the voltage drop inside the Qualcomm chipset. Due to
platform limitations, the chipset has integrated the reset function into PWRKEY. Therefore, never pull
down PWRKEY to GND permanently.
3.6.2. Turn off Module
Either of the following methods can be used to turn off the module:
⚫ Turn off the module through PWRKEY.
⚫ Turn off the module through AT+QPOWD command.
3.6.2.1. Turn off Module through PWRKEY
Driving PWRKEY low for 650–1500 ms and then release it, the module will execute power-down
procedure.
The power-off scenario is illustrated in the following figure.
VBAT
PWRKEY
≥ 1.3 s
650–1500 ms
RUNNING
Power-down procedure
OFF
Module
Status
STATUS
V
IL
≤ 0.45 V
Figure 9: Power-off Timing
3.6.2.2. Turn off Module through 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.
See document [2] for details about AT+QPOWD command.