Turn On And Off; Turn On With Pwrkey - Quectel SC262R Series Hardware Design

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

3.5. Turn On and 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 1.8 V internally. It is recommended to use an open drain/collector driver to control PWRKEY.
A simple reference circuit is illustrated in the following figure.
The other way to control PWRKEY is using a button directly. You must place a TVS component nearby
the button for ESD protection. A reference circuit is shown in the following figure.
SC262R_Series_Hardware_Design
>1.6 s
R1
4.7K
Turn on pulse
Figure 6: Turn On the Module Using Driving Circuit
S1
TVS
Figure 7: Turn On the Module Using Button
R3
1K
Q1
R2
47K
PWRKEY
1K
Close to S1
Smart Module Series
PWRKEY
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