Reset The Module - Quectel EG91 Series Hardware Design

NOTES
1. In order to avoid damaging internal flash, please do not switch off the power supply when the module
works normally. Only after the module is shut down by PWRKEY or AT command, the power supply
can be cut off.
2. When turning off module with AT command, please keep PWRKEY at high level after the execution of
power-off command. Otherwise the module will be turned on again after successful turn-off.
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 150ms~460ms.
Table 8: Pin Definition of RESET_N
Pin Name Pin No.
RESET_N 17
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.
Figure 14: Reference Circuit of RESET_N by Using Driving Circuit
EG91_Hardware_Design

3.8. Reset the Module

Description
Reset the module
40 / 93
DC Characteristics
V max=2.1V
IH
V min=1.3V
IH
V max=0.5V
IL
LTE Module Series
EG91 Hardware Design
Comment