Product Info

LTE Module Series
AG35-QuecOpen
Hardware Design
AG35-QuecOpen_Hardware_Design 50 / 137
Table 10: Pin Definition of SHDN_N
Pin Name Pin No. Description DC Characteristics Comment
SHDN_N 176
Emergency shutdown
for the module
V
IH
max=2.1V
V
IH
min=1.3V
V
IL
max=0.5V
Driving the SHDN_N pin to a low level voltage and then releasing it will make the module shut down
unconditionally. The shut-down scenario is illustrated in the following figure.
Figure 14: Shut Down the Module Using Driving Circuit
Figure 15: Timing of Turning off Module via SHDN_N
1. Pulling down SHDN_N for module shutdown is an emergency option when there are failures in
turning off the module by PWRKEY or AT command or API interface. And it is recommended to use
NOTES