
Smart LTE Module Series
SC600Y&SC600T Hardware Design
SC600Y&SC600T_Hardware_Design 46 / 128
Turn on pulse
PWRKEY
4.7K
47K
>1.6s
R1
R2
Q1
R3
1K
Figure 6: Turn on the Module Using Driving Circuit
Another way to control the PWRKEY is using a button directly. A TVS component is indispensable to be
placed nearby the button for ESD protection. A reference circuit is shown in the following figure.
PWRKEY
S1
Close to S1
TVS
1K
Figure 7: Turn on the Module Using Keystroke