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85~112
Turn on/off
Pin Name
Pin No.
PWRKEY
21
RESET_N
20
Status Indication
Pin Name
Pin No.
STATUS
61
NET_MODE
5
NET_
6
STATUS
USB Interface
Pin Name
Pin No.
USB_VBUS
71
USB_DP
69
USB_DM
70
USIM Interface
Pin Name
Pin No.
USIM_GND
10
USIM_VDD
14
EC25-V_User_Manual
69
I/O
Description
Turn on/off the
DI
module.
DI
Reset the module.
I/O
Description
Indicate the module
OD
operating status.
Indicate the module
DO
network registration
mode.
Indicate the module
DO
network activity
status.
I/O
Description
PI
USB detection.
USB differential data
IO
bus.
USB differential data
IO
bus.
I/O
Description
Specified ground for
USIM card.
Power supply for
PO
USIM card.
Confidential / Released
DC Characteristics
V
max=2.1V
IH
V
min=1.3V
IH
V
max=0.5V
IL
V
max=2.1V
IH
V
min=1.3V
IH
V
max=0.5V
IL
DC Characteristics
The drive current
should be less than
0.9mA.
V
min=1.35V
OH
V
max=0.45V
OL
V
min=1.35V
OH
V
max=0.45V
OL
DC Characteristics
Vnorm=5.0V
Compliant with USB
2.0 standard
specification.
Compliant with USB
2.0 standard
specification.
DC Characteristics
For 1.8V USIM:
Vmax=1.9V
Vmin=1.7V
LTE Module Series
EC25-V User Manual
Comment
Comment
Require external
pull-up. If unused,
keep it open.
1.8V power domain.
If unused, keep it
open.
1.8V power domain.
If unused, keep it
open.
Comment
Require differential
impedance of 90ohm.
Require differential
impedance of 90ohm.
Comment
Either 1.8V or 3V is
supported by the
module automatically.
17 /
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