Turn On/Off; Turn On With Pwrkey - Quectel SC206E Series Hardware Design

2. The module supports battery charging by default. If the above power supply design is adopted,
disable the charging function by software, or connect VBAT to a Schottky diode in series to avoid
the reverse current to the power supply IC.

3.5. Turn On/Off

3.5.1. Turn On with PWRKEY

The module can be turned on by driving the PWRKEY pin low for at least 1.6 s. The PWRKEY pin is
pulled up to 1.1 V internally. It is recommended to use an open collector driver to control PWRKEY. A
simple reference circuit is illustrated in the following figure.
> 1.6 s
Turn on pulse
Figure 6: Turn On the Module with Open Collector Driver
Another way to control PWRKEY is by using a button directly. You must place a TVS component nearby
the button for ESD protection. A reference circuit is shown by the following figure.
SC206E_Series_Hardware_Design
R1
4.7K
S1
TVS
Close to S1
Figure 7: Turn On the Module Using Button
R3
PWRKEY
1K
Q1
R2
47K
PWRKEY
1K
Smart Module Series
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