Turn Off - Quectel NB-IoT Module Series Hardware Design

Another way to control the PWRKEY is using a button directly. When pressing the key, electrostatic strike
may generate from the finger. Therefore, a TVS component is indispensable to be placed nearby the
button for ESD protection. A reference circuit is shown in the following figure.
The turn on scenario is illustrated in the following figure.
VBAT
PWRKEY
VDD_EXT
Module
Status

3.7.2. Turn off

The module can be turned off by switching off the VBAT power supply.
BC66_Hardware_Design
S1
TVS
Close to S1
Figure 6: Turn on the Module Using Keystroke
41.25ms
OFF
Figure 7: Turn-on Timing
PWRKEY
TBD
BOOTING
NB-IoT Module Series
BC66 Hardware Design
RUNNING
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