LTE Standard Module Series
EC200T Series Hardware Design
EC200T_Series_Hardware_Design 22 / 90
Pin Name
Pin No.
I/O
Description
DC
Characteristics
Comment
VDD_EXT 7
PO
Provide 1.8 V for
external circuit
Vnorm = 1.8 V
I
O
max = 50 mA
Power supply for
external GPIO’s pull-up
circuits.
If unused, keep it open.
Power on/off
Pin Name
Pin No.
I/O
Description
DC Characteristics Comment
RESET_N
20
DI
Reset the module
V
IL
max = 0.5 V
If unused, keep it
open.
PWRKEY 21 DI
Turn on/off the
module
V
IL
max = 0.5 V
VBAT power domain.
Status Indication
Pin Name
Pin No.
I/O
Description
DC Characteristics Comment
NET_MODE 5
DO
Indicate the module’s
network registration
mode
V
OH
min = 1.35 V
V
OL
max = 0.45 V
1.8 V power domain.
If unused, keep it
open.
NET_
STATUS
6 DO
Indicate the module’s
network activity status
V
OH
min = 1.35 V
V
OL
max = 0.45 V
1.8 V power domain.
If unused, keep it
open.
STATUS 61 OD
Indicate the module’s
operation status
An external pull-up
resistor is required.
If unused, keep it
open.
USB Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics Comment
USB_DP 69 IO
USB differential data
(+)
Require differential
impedance of 90
Ω
.
USB 2.0 compliant.
If unused, keep it
open.
USB_DM 70 IO
USB differential data
(-)
Require differential
impedance of 90
Ω
.
USB 2.0 compliant.
If unused, keep it
open.
USB_VBUS 71
AI
USB connection
detect
Vmax = 5.25 V
Vmin = 3.0 V
Vnorm = 5.0 V
Typical: 5.0 V
If unused, keep it
open.
