Quectel RG520N-AT - Turn on; Turn on with PWRKEY

5G Module Series
RG520N-AT_Hardware_Design 40 / 109
3.5. Turn On
3.5.1. Turn On with PWRKEY
Table 9: Pin Definition of PWRKEY
When the module is in power off mode, it can be turned on by driving PWRKEY low for at least 500 ms. It
is recommended to use an open-drain/open-collector driver to control PWRKEY. After STATUS pin
outputs a high level, PWRKEY can be released.
PWRKEY
≥ 500 ms
MCU
GPIO
Module
Turn on pulse
4.7K
47K
Q1
Figure 11: Reference Circuit of Turning on the Module with Driving Circuit
Another way to control 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.
PWRKEY
M odule
S1
Close to S1
TVS
1K
Turn-on pulse
R1
Figure 12: Reference Circuit of Turning on the Module with a Button
Pin Name
Pin No.
I/O
Description
Comment
PWRKEY
7
DI
Turns on/off the module
Internally pulled up to 1.8 V.