Product Info

LTE Module Series
EG61-NA Hardware Design
EG61-NA_Hardware_Design 21 / 77
VDD_EXT 29 PO
Provide 1.8V for
external circuit
Vnorm=1.8V
I
O
max=50mA
Power supply for
external GPIO’s pull up
circuits.
GND
3, 31, 48,
50, 54, 55,
58, 59, 61,
62, 67~74,
79~82,
89~91,
100~106
Ground
Turn on/off
Pin Name Pin No. I/O Description DC Characteristics Comment
PWRKEY 15 DI
Turnon/off the
module
V
IH
max=2.1V
V
IH
min=1.3V
V
IL
max=0.5V
The output voltage is
0.8V because of the
diode drop in the
Qualcomm chipset.
RESET_N 17 DI
Reset signal of the
module
V
IH
max=2.1V
V
IH
min=1.3V
V
IL
max=0.5V
Pull-up to 1.8V
internally.
Activelow.
If unused,keep it
open.
Status Indication
Pin Name Pin No. I/O Description DC Characteristics Comment
STATUS 20 DO
Indicate the module
operation status
V
OH
min=1.35V
V
OL
max=0.45V
1.8V power domain.
If unused, keep it
open.
NETLIGHT 21 DO
Indicate the
module’s network
activity status
V
OH
min=1.35V
V
OL
max=0.45V
1.8V power domain.
If unused, keep it
open.
USB Interface
Pin Name Pin No. I/O Description DC Characteristics Comment
USB_VBUS 8 PI USB detection
Vmax=5.25V
Vmin=3.0V
Vnorm=5.0V
Typical:5.0V
If unused, keep it
open.
USB_DP 9 IO
USB differential data
bus (+)
Compliant with USB
2.0 standard
specification.
Require differential
impedance of 90Ω.
USB_DM 10 IO
USB differential data
bus (-)
Compliant with USB
2.0 standard
Require differential
impedance of 90Ω.