Product Info

Smart LTE Module Series
SC650T Hardware Design
SC650T_Hardware_Design 26 / 131
HS_DET
48
AI
Headset insertion
detection
Pulled up internally.
USB Interface
Pin Name
Pin No.
I/O
Description
DC
Characteristics
Comment
USB_VBUS
41，42
PI/PO
Charging power
input.
Power supply output
for OTG device.
USB/charger
insertion detection.
Vmax=10V
Vmin=4V
Vnorm=5.0V
USB_DM
33
IO
USB 2.0 differential
data bus (minus)
USB 2.0 standard
compliant
90Ω differential
impedance.
USB_DP
32
IO
USB 2.0 differential
data bus (plus)
USB_SS_RX
_P
171
AI
USB 3.0 differential
receive (plus)
USB 3.0 standard
compliant
90Ω differential
impedance.
USB_SS_RX
_M
172
AI
USB 3.0 differential
receive (minus)
USB_SS_TX_
P
174
AO
USB 3.0 differential
transmit (plus)
90Ω differential
impedance.
USB_SS_TX_
M
175
AO
USB 3.0 differential
transmit (minus)
USBC_CC2
223
AI/AO
USB Type-C control
configuration
channel 2
USBC_CC1
224
AI/AO
USB Type-C control
configuration
channel 1
CC_OUT
225
AO
USB Type-C switch
control
(U)SIM Interface
Pin Name
Pin No.
I/O
Description
DC
Characteristics
Comment
USIM1_DET
145
DI
(U)SIM1 card
hot-plug detection
V
IL
max=0.63V
V
IH
min=1.17V
Active Low.
Require external
pull-up to 1.8V.
If unused, keep this
pin open.
Disabled by default,
and can be enabled