Quectel EG91 Series Hardware Design page 39

The power-on scenario is illustrated in the following figure.
VBAT
PWRKEY
VDD_EXT
BOOT_CONFIG &
USB_BOOT Pins
RESET_N
STATUS
(DO)
UART
USB
EG91_Series_Hardware_Design
Figure 11: Turn on the Module Using Button
NOTE 1
≥500ms
V ≤0.5V
IL
About 100ms
≥100ms. After this time, the BOOT_CONFIG
pins can be set to high level by external circuit.
10s
≥
I nactive
I nactive
Figure 12: Timing of Turning on Module
LTE Standard Module Series
EG91 Series Hardware Design
V =0.8V
H
≥ 12s
≥ 13s
Active
Active
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