Turn On; Turn On With Pwrkey - Quectel SG865W Series Hardware Design

3.2. Turn On

3.2.1. Turn On with PWRKEY

Table 8: Pin Definition of PWRKEY
Pin Name Pin No.
PWRKEY 461
The module can be turned on by driving PWRKEY low for at least 1.6 s.
It is recommended to use an open drain/collector driver to control the PWRKEY. A simple reference circuit
is illustrated in the following figure.
GPIO
MCU
The other way to control the PWRKEY is by using a button directly. A TVS component is indispensable to
be placed nearby the button for ESD protection. Additionally, a 1 kΩ resistor is connected in series to
PWRKEY. A reference circuit is shown in the following figure.
SG865W_Series_Hardware_Design
I/O Description
DI Turn on/off the module
> 1.6 s
Turn on pulse
4.7K
Q1
Figure 7: Turn On the Module Using Driving Circuit
Comment
PWRKEY pin is pulled to 1.8 V internally.
47K
Smart Module Series
PWRKEY
Module
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