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state.
The followin
ng figure sho
ows the con
Sendin
g data to EC
C25through
When E
EC25has UR
RC to report
3.5.1.4. USB
B Applicatio
on without
If host does
s not support
t USB suspe
circuit to let
the module
e enter into s
Execut
e AT comma
and AT+QSC
Ensure
e the DTR is
held in high
Discon
nect USB_V
VBUS.
The followin
ng figure sho
ows the con
Figure 6: S
EC25-A_Us
E
All manuals and user guides at all-guides.com
nection betw
ween the mo
Module
VBUS
USB_V
USB
B_DP
USB
B_DM
EADY
AP_RE
RI
GND
G
Figure 5: Sl
F
eep Applica
USB will wa
ake up the m
t, RI signal w
will wake up
USB Suspe
end Functio
end function
n, you should
sleep mode.
CLK=1 to e
nable the sle
h level or kee
ep it open.
nection betw
ween the mo
Modu
ule
Power
USB
B_VBUS
Switch
U
USB_DP
U
USB_DM
RI
AP
P_READY
GND
Sleep Applic
cation witho
ser_ManualC
Confidentia
odule and th
he host.
Host
VDD
D
USB
B_DP
USB
B_DM
GPIO
O
EINT
T
GND
D
ation with R
RI
module.
the host.
on
d disconnect
t USB_VBU
S with addit
eep mode.
odule and th
he host.
Host
H
GPIO
VDD
USB_D
DP
USB_D
DM
EINT
GPIO
GND
out Suspen
nd Function
n
al / Release
d
24 / 6
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LTE Module
L
e
EC25-AU
ser Manua
al
tional contro
ol
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