Quectel LTE-A Series

LTE-A Module Series
EG060V-EA Hardware Design
EG060V-EA_Hardware_Design 35 / 82
Another way to control the PWRKEY pin is by using a button. To protect your finger from electronic strikes
when you press the key, a TVS component placed near the button for ESD protection is indispensable. A
reference design is given below.
PWRKEY
S1
Close to S1
TVS
Figure 12: Turn on the Module with Button
The timing of turning on is illustrated in the following figure.
V
IL
≤ 1.2 V
V
IH
≥ 2.4 V
VBAT
PWRKEY
≥ 550 ms
RESET_N
STATUS
Inactive
Active
UART
NOTE
Inactive
Active
USB
≥ 21 s
≥ 26.6 s
≥ 14 s
Figure 13: Timing of Turning on the Module
Please make sure that VBAT is stable for no less than 300 ms before pulling down the PWRKEY pin.
NOTE