Quectel LPWA Series User Manual

LPWA Module Series
BG950A-GL&BG951A-GL_Hardware_Design
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3.7.3. Power Supply Monitoring
AT+CBC can monitor the VBAT_BB voltage value. For more details, see document [3].
3.8. Turn On
3.8.1. Turn on the Module with PWRKEY
Table 9: Pin Definition of PWRKEY
When the module is in power off mode, driving PWRKEY low for 500–1000 ms and then releasing it will
turn on the module. It is recommended to use an open drain/collector driver to control the PWRKEY.
A simple reference design is illustrated in the following figure.
Figure 7: Turn on the Module with Driving Circuit
Another way to control the PWRKEY is by using a button directly. When pressing the button, an
electrostatic strike may generate from fingers. Therefore, a TVS component is indispensable to be placed
nearby the button for ESD protection.
Pin Name
Pin No.
I/O
Description
Comment
PWRKEY
15
DI
Turn on/off the module
Internally pulled up with a 470 kΩ resistor.

Quectel LPWA Series Specifications

General

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