LTE Standard Module Series
EG25-GL_Hardware_Design 20 / 96
Table 5: Pin Description
Power Supply
Pin Name
Pin No.
I/O
Description
DC Characteristics Comment
VBAT_BB
59, 60
PI
Power supply for the
module’s BB part
Vmax = 4.3 V
Vmin = 3.3 V
Vnom = 3.8 V
It must be provided
with sufficient current
up to 0.8 A.
VBAT_RF
57, 58
PI
Power supply for the
module’s RF part
It must be provided
with sufficient current
up to 1.8 A in a burst
transmission.
VDD_EXT
7
PO
Provide 1.8 V for
external circuit
Vnom = 1.8 V
I
O
max = 50 mA
Power supply for
external GPIO’s pull
up circuits.
If unused, keep it
open.
GND
8, 9, 19, 22, 36, 46, 48, 50
–54, 56, 72, 85–112
Turn On/Off
Pin Name
Pin No.
I/O
Description
DC Characteristics Comment
PWRKEY
21
DI
Turn on/off the
module
The output voltage is
0.8 V because of the
diode drop in the
chipset.
RESET_N
20
DI
Reset the module
V
IH
max = 2.1 V
V
IH
min = 1.3 V
V
IL
max = 0.5 V
1.8 V power domain.
If unused, keep it
open.
Indication Signals
Pin Name
Pin No.
I/O
Description
DC Characteristics Comment
STATUS
61
OD
Indicate the module
’s
operation status
VDD_EXT
The drive current
should be less than
0.9 mA.
An external pull-up
resistor is required. If
unused, keep it open.
NET_MODE
5
DO
Indicate the
module’s
network registration
mode
VDD_EXT
1.8 V power domain.
Cannot be pulled up
before startup.
If unused, keep it
open.
