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VBAT
T
RESE
ET _N
Modu
le
Status
s
NOTES
1.
Use th
he RESET_
N only whe
PWRKE
EY pin failed
d.
2.
Ensure
e that there is
s no large c
3.9. USIM
M Card I
nterface
The USIM c
card interfac
ce circuitrym
3.0V USIM
cards are su
upported.
Table 9: Pin
n Definition
n of the USI
Pin Name
Pin No.
USIM_VDD
D
14
USIM_DAT
TA
15
USIM_CLK
K
16
USIM_RST
T
17
USIM_
13
PRESENC
CE
USIM_GN
D
10
EC25-A_Us
E
All manuals and user guides at all-guides.com
Treset_max
≤
Treset_min
≥T
V
V
≤ 0 .5V
IL
RU
UNNING
R
RESETTING
Fig
gure 16: Tim
ming of Res
en turning
off the mod
apacitance
on the PWR
meets ETSI
and IMT-20
IM Interface
e
I/O
Description
n
PO
Power supp
ply for USIM
IO
Data signal
of USIM ca
DO
Clock signa
al of USIM ca
DO
Reset signa
al of USIM c
DI
USIM card i
insertion det
Specified gr
round for US
ser_ManualC
Confidentia
x
V
≥ 1
.3V
IH
RUNNING
setting Mod
dule
dule by the
e command
RKEY and R
RESET_N pin
ns.
000 SIM inte
erface requir
rements. Bo
Comment
Either 1.8V
V or 3.0V is
card.
by the mod
ule automat
rd.
ard.
ard.
tection.
SIM card.
al / Release
d
32 / 6
69
LTE Module
L
e
EC25-AU
ser Manua
al
WD and the
e
AT+QPOW
oth 1.8V and
d
s supported
tically.
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