Quectel EC25 series

PCM_IN
PCM_OU
T
PCM_SY
N
PCM_CL
K
I2C Interf
a
Pin Name
I2C_SCL
I2C_SDA
RF Interf
a
Pin Name
ANT_DIV
ANT_MAI
N
ANT_GN
S
GPIO Pin
s
Pin Name
E
24
T
25
N
C 26
K
27
a
ce
Pin N
o
41
42
a
ce
Pin N
o
35
N
49
S
S 47
s
Pin
N
E
C25-A_U
s
DI
DO
IO
IO
o
. I/O
OD
OD
o
. I/O
AI
IO
AI
N
o. I/O
s
e
r
_Manual
C
PCM data i
n
PCM data
o
PCM data f
r
sync signal
.
PCM clock.
Descriptio
n
I2C serial c
l
Used for e
x
codec.
I2C serial d
Used for e
x
codec.
Descriptio
n
Diversity a
n
Main anten
n
GNSS ante
Descriptio
n
C
onfidenti
a
n
put.
o
utput.
r
ame
.
n
l
ock.
x
ternal
ata.
x
ternal
n
n
tenna.
n
a.
nna.
n
a
l / Release
V
IL
min=-0.
3
V
IL
max=0.6
V
IH
min=1.2
V
V
IH
max=2.
0
V
OL
max=0.
4
V
OH
min=1.
3
V
OL
max=0.
4
V
OH
min=1.
3
V
IL
min=-0.
3
V
IL
max=0.6
V
IH
min=1.2
V
V
IH
max=2.
0
V
OL
max=0.
4
V
OH
min=1.
3
V
IL
min=-0.
3
V
IL
max=0.6
V
IH
min=1.2
V
V
IH
max=2.
0
DC Chara
c
DC Chara
c
50ohm imp
e
50ohm imp
e
50ohm imp
e
DC Chara
c
d 20 /
6
3
V
V
V
0
V
4
5V
3
5V
4
5V
3
5V
3
V
V
V
0
V
4
5V
3
5V
3
V
V
V
0
V
c
teristics
c
teristics
e
dance.
e
dance.
e
dance.
c
teristics
L
EC25-AU
6
9
1.8V pow
e
If unused,
open.
1.8V pow
e
If unused,
open.
1.8V pow
e
In master
an output
s
slave mod
input sign
a
If unused,
open.
1.8V pow
e
In master
an output
s
slave mod
input sign
a
If unused,
open.
Commen
t
External p
resistor is
1.8V only.
keep it op
e
External p
resistor is
1.8V only.
keep it op
e
Commen
t
If unused,
open.
If unused,
open.
Commen
t
L
TE Modul
e
ser Manu
a
e
r domain.
keep it
e
r domain.
keep it
e
r domain.
mode, it is
s
ignal. In
e, it is an
a
l.
keep it
e
r domain.
mode, it is
s
ignal. In
e, it is an
a
l.
keep it
t
ull-up
required.
If unused,
e
n.
ull-up
required.
If unused,
e
n.
t
keep it
keep it
t
e
a
l