Product Info

LTE Standard Module Series
EG91 Series Hardware Design
EG91_Series_Hardware_Design
38 / 102
S1
PWRKEY
TVS
Close to S1
Figure 11: Turn on the Module Using Button
The power-on scenario is illustrated in the following figure.
NOTE 1
VBAT ≥ 500ms
V
H
=0.8V
PWRKEY
VDD_EXT
BOOT_CONFIG &
USB_BOOT Pins
V
IL
≤ 0.5V
About 100ms
≥100ms. After this time, the BOOT_CONFIG
pins can be set to high level by external circuit.
RESET_N
STATUS
( DO)
≥
10s
≥ 12s
UART
I nactive
Active
≥13s
USB
I nactive Active
Figure 12: Timing of Turning on Module