MEIG SLM770A - Reset the Module; Hardware Reset

SLM770A Module Hardware Design Manual
MeiG Smart Technology Co., Ltd 77/77
3.8 Reset the Module
There are two ways to restart the SLM770A: Hardware restart, AT command restart.
3.8.1 Hardware reset
When the module is working, restart the module by pulling down the RESET_N pin for at least 300ms.
RESET_N signal is sensitive to interference, so it is suggested that the routing on the module interface
board should be as short as possible and should be processed in package.
Table 10 RESET_N pin description
Pin name
Pin number
Description
DC features
Note
RESET_N
20
Restart the module
V
IH
max=2.1V
V
IH
min=1.3V
V
IL
max=0.5V
Reference circuit is as follows: you can use open set driver circuit or button to control RESET_N pin.
RESET_N
4.7K
47K
Reset pulse
Figure 11 Reference circuit of RESET_N by using driving circuit