Quectel LPWA Series Hardware Design

LPWA Module Series
BG950A-GL&BG951A-GL_Hardware_Design
35
/89
Figure 9: Power-down Timing
3.8.2. Turn off the Module with AT Command
It is safe to use AT+QPOWD* to turn off the module, which is equal to turn off the module via PWRKEY
pin.
Refer to document [3] for details about AT+QPOWD*.
.
3.9. Reset
The module can be reset by driving the RESET_N low for a certain time (TBD) and then releasing it. The
RESET_N signal is sensitive to interference, so it is recommended to route the trace as short as possible
and surround it with ground.
Table 10: Pin Definition of RESET_N
1. To avoid damaging the internal flash, do not switch off the power supply when the module works
normally. Only after the module is turned off by PWRKEY or AT command, the power supply can be
cut off.
2. When turning off module with AT command, keep PWRKEY at a high level after the execution of
power-off command. Otherwise, the module will be turned on again after turned off.
Pin Name
Pin No.
I/O
Description
NOTE

Quectel LPWA Series Specifications

General

Brand	Quectel
Model	LPWA Series
Category	GSM/GPRS Modules
Language	English