Quectel EC25 series

USIM_DA
T
USIM_CL
K
USIM_RS
T
USIM_
PRESEN
C
UART Int
e
Pin Name
RI
DCD
CTS
E
T
A 15
K
16
T
17
C
E
13
e
rface
Pin N
o
62
63
64
E
C25-A_U
s
IO
DO
DO
DI
o
. I/O
DO
DO
DO
s
e
r
_Manual
C
Data signal
card.
Clock sign
a
card.
Reset sign
a
USIM card.
USIM card
i
detection.
Descriptio
n
Ring indica
t
Data carrie
r
detection.
Clear to se
n
C
onfidenti
a
of USIM
a
l of USIM
a
l of
i
nsertion
n
t
o
r
r
n
d.
a
l / Release
Vmax=3.05
Vmin=2.7V
I
O
max=50
m
For 1.8V U
S
V
IL
max=0.6
V
IH
min=1.2
V
V
OL
max=0.
4
V
OH
min=1.
3
For 3.0V U
S
V
IL
max=1.0
V
IH
min=1.9
5
V
OL
max=0.
4
V
OH
min=2.
5
For 1.8V U
S
V
OL
max=0.
4
V
OH
min=1.
3
For 3.0V U
S
V
OL
max=0.
4
V
OH
min=2.
5
For 1.8V U
S
V
OL
max=0.
4
V
OH
min=1.
3
For 3.0V U
S
V
OL
max=0.
4
V
OH
min=2.
5
V
IL
min=-0.
3
V
IL
max=0.6
V
IH
min=1.2
V
V
IH
max=2.
0
DC Chara
c
V
OL
max=0.
4
V
OH
min=1.
3
V
OL
max=0.
4
V
OH
min=1.
3
V
OL
max=0.
4
V
OH
min=1.
3
d 18 /
6
V
m
A
S
IM:
V
V
4
5V
3
5V
S
IM:
V
5
V
4
5V
5
5V
S
IM:
4
5V
3
5V
S
IM:
4
5V
5
5V
S
IM:
4
5V
3
5V
S
IM:
4
5V
5
5V
3
V
V
V
0
V
c
teristics
4
5V
3
5V
4
5V
3
5V
4
5V
3
5V
L
EC25-AU
6
9
1.8V pow
e
If unused,
open.
Commen
t
1.8V pow
e
If unused,
open.
1.8V pow
e
If unused,
open.
1.8V pow
e
If unused,
L
TE Modul
e
ser Manu
a
e
r domain.
keep it
t
e
r domain.
keep it
e
r domain.
keep it
e
r domain.
keep it
e
a
l