LTE Standard Module Series
EG25-GL_Hardware_Design 38 / 96
1. To avoid corrupting the data in the internal flash, do not switch off the power supply when the module
works normally. Only after turning off the module with PWRKEY or AT command can you cut off the
power supply.
2. When turning off module with the AT command, keep PWRKEY at high level after the execution of the
command. Otherwise, the module will be turned on again after successfully turn-off.
3.6 Reset
The RESET_N pin can be used to reset the module. The module can be reset by driving RESET_N low
for 150
–460 ms.
Table 9: Pin Definition of RESET_N
Pin Name
Pin No.
I/O
Description
Comment
RESET_N
20
DI
Reset the module
1.8 V power domain.
If unused, keep it open.
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
NOTE
