Service Guide

LTE Standard Module Series
EG91_Series_Hardware_Design
42
/ 105
3.8. Reset the Module
The RESET_N pin can be used to reset the module. The module can be reset by driving RESET_N to a
low level voltage for 150–460 ms.
Table 8: Pin Definition of RESET_N
The recommended circuit is similar to the PWRKEY control circuit. An open drain/collector driver or button
can be used to control the RESET_N.
Reset pulse
RESET_N
4.7K
47K
150
–
460 ms
Figure 14: Reference Circuit of RESET_N by Using Driving Circuit
Figure 15: Reference Circuit of RESET_N by Using A Button
Pin Name Pin No. Description Comment
RESET_N 17 Reset the module
Require pull-up resistor to 1.8 V internally.
Active low.
If unused, keep it open.