Quectel EC25 series

EC25 supp
o
detections,
AT+QSIMD
The followi
n
Mo
d
If you do
n
reference c
i
M
o
In order to
e
E
o
rts USIM
c
whichisdis
a
ET.
n
g figure sh
o
d
ule
USIM
_
USIM
_
USIM
_
USIM
_
USIM
_
USIM
_
n
ot need t
h
i
rcuit for usi
n
o
dul
e
USI
USI
USI
USI
USI
e
nhance th
e
E
C25-A_U
s
c
ard hot-plu
a
bled by
d
o
ws the ref
e
_
VDD
_
GND
_
RST
_
CLK
_
DATA
_
PRESENC
E
VDD
51K
Figure 17:
h
e USIM c
a
n
g a 6-pin
U
M_ VD D
M_GND
M_ R ST
M_ C LK
M_D ATA
Figure 18:
e
reliability a
s
e
r
_Manual
C
g via the U
S
d
efault. Fo
r
e
rence desi
g
E
22R
22R
22R
_EXT
33p
F
USI
M
Reference
a
rd detecti
o
U
SIM card c
o
22R
22R
22R
33pF 3
3
15K
USIM_V
D
Reference
nd availabil
i
C
onfidenti
a
S
IM_PRES
E
r
details, r
e
g
n of the 8-
p
F
33pF 33p
F
GND
M
_VDD
15K
Circuit of
8
o
n function
,
o
nnector is
3
pF 33pF
GND
D
D
Circuit of
6
i
ty of the U
S
a
l / Release
E
NCE pin.
e
fer to do
c
p
in USIM co
n
100nF
GN
D
F
8
-Pin USIM
,
keep USI
illustrated i
n
100nF
GND
6
-Pin USIM
S
IM card in
y
d 33 /
6
It supports
l
c
ument
[
2
]
n
necto
r
.
USI
D
VCC
RST
CLK
Connecto
r
M_PRESE
N
n
the followin
USI
M
VCC
RST
CLK
Connecto
r
y
our applica
L
EC25-AU
6
9
l
ow level a
n
]
about th
e
M Connector
I
O
VP
GN
D
r
N
CE uncon
n
g figure.
M
Connecto
r
I
O
VP
P
GN
D
r
a
tion, pleas
e
L
TE Modul
e
ser Manu
a
n
d high lev
e
e
comman
d
GND
O
P
D
n
ected. Th
e
O
P
D
follow the
e
a
l
e
l
d
e