Turn On; Turn On The Module With Pwrkey - Quectel EG915U-EU Manual

3.5. Turn On

3.5.1. Turn on the Module with PWRKEY

Table 9: Pin Definition of PWRKEY
Pin Name
PWRKEY
When the module is in power off mode, it can be turned on and enter normal operation mode by driving
the PWRKEY low for at least 2 s. It is recommended to use an open drain/collector driver to control the
PWRKEY.
Figure 9: Reference Circuit of Turing on the Module with Driving Circuit
Another way to control the PWRKEY is by using a button directly. When pressing the button, an
electrostatic strike may generate from finger. Therefore, a TVS component shall be placed near the button
for ESD protection.
Figure 10: Reference Circuit of Turing on the Module with Keystroke
EG915U-EU_Hardware_Design
Pin No. I/O
15 DI
2 s
Turn-on pulse
S1
Description
Turn on/off the module
4.7K
47K
TVS
Close to S1
LTE Standard Module Series
Comment
VBAT power domain.
PWRKEY
10 nF
PWRKEY
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