LPM2100 mg NB Module Hardware User Guide
Shanghai Yuge Information Technology Co., Ltd.
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Figure 3-5 boot timing diagram
Another way to control the PWRKEY of the LPM2100 mg series module is through a
mechanical push button switch. A TVS tube is placed near the button for ESD protection. The
reference circuit diagram is as follows.
Figure 3-6 Mechanical button boot
3.4.2 Shut down
The LPM2100 mg series module shutdown can be powered down via the VBAT pin and
shut down using the AT
“
at+cpof
”
command.
When the module is powered on, the VBAT pin stops the power supply module and shuts
down.
