Quectel QuecOpen BG952A-GL Hardware Design page 31

Table 10: PWRKEY Pin Definition
Pin Name Pin No.
PWRKEY 15
When the module is in power-off mode, it can be turned on by driving PWRKEY low for 500–1000 ms. It is
recommended to use an auto power-on circuit to control PWRKEY, as shown below.
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NOTE
With the above circuit, the module automatically powers on when the power supply is switched on, and
keeps PWRKEY at a high level after successful power-on. With this design, if you intend to power on the
module again after you power it off with an API or AT command, switch off the power supply of the
module and remain in switch-off state for at least 200 ms before you switch on the power supply to
enable automatic power-on of the module.
If the device has an extra MCU, it is recommended to use an open drain/collector driver to control the
PWRKEY. A simple reference circuit is illustrated in the following figure.
BG952A-GL_QuecOpen_Hardware_Design
I/O Description
Turn
DI
module
Figure 5: Auto Power-on Circuit
Comment
on/off the Internally pulled up with a 470 kΩ
resistor.
LPWA Module Series
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