Advertisement
EC25 suppo
orts USIM c
card hot-plu
detections,
whichisdisa
abled by d
AT+QSIMD
ET.
The followin
ng figure sho
ows the refe
USIM_
_GND
USIM_
_VDD
USIM_
_RST
Mod
dule
USIM_
_CLK
USIM_
_PRESENCE
USIM_
_DATA
Figure 17:
If you do n
not need th
he USIM ca
reference ci
ircuit for usin
ng a 6-pin U
USI
M_GND
USI
M_VDD
USI
M_RST
Mo
odule
USI
M_CLK
USI
M_DATA
Figure 18:
In order to e
enhance the
e reliability a
E
EC25-A_Us
All manuals and user guides at all-guides.com
g via the US
SIM_PRESE
default. For
r details, re
erence desig
gn of the 8-p
VDD
_EXT
USIM
M_VDD
51K
15K
22R
E
22R
22R
33pF
F
33pF 33pF
GND
Reference
Circuit of 8
ard detectio
on function,
USIM card co
onnector is
USIM_VD
DD
15K
22R
22R
22R
33pF
33
3pF 33pF
GND
Reference
Circuit of 6
nd availabili
ity of the US
ser_ManualC
Confidentia
ENCE pin.
It supports l
low level an
efer to doc
] about the
cument [2]
pin USIM con
nnector.
100nF
USI
M Connector
VCC
RST
CLK
F
GND
D
8-Pin USIM
Connector
r
, keep USI
M_PRESEN
NCE unconn
illustrated in
nthe followin
g figure.
100nF
USIM
M Connector
VCC
RST
CLK
GND
6-Pin USIM
Connector
r
SIM card in y
your applica
ation, please
al / Release
d
33 / 6
69
LTE Module
L
e
EC25-AU
ser Manua
al
nd high leve
el
e command
d
GND
D
VP
P
IO
O
GND
nected. The
e
GND
D
VPP
P
IO
O
follow the
Advertisement
