Product Info

Smart LTE Module Series
SC66 Hardware Design
SC66_Hardware_Design 32 / 118
through 10K
resistor.
SS_DIR_IN
21
DI
CC status
detection pin
When USB
TYPE-C is used, it
should be
connected to
SS_DIR_OUT.
When uUSB is
used, it should be
connected to GND.
SS_DIR_OU
T
226
DO
CC status output
pin
When USB
TYPE-C is used, it
should be
connected to
SS_DIR_IN. When
uUSB is used, it
should be kept
open.
(U)SIM Interfaces
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.
USIM1_RST
144
DO
(U)SIM1 card
reset signal
V
OL
max=0.4V
V
OH
min=
0.8 × USIM1_VDD
USIM1_CLK
143
DO
(U)SIM1 card
clock signal
USIM1_DATA
142
IO
(U)SIM1 card data
signal
V
IL
max=
0.2 × USIM1_VDD
V
IH
min=
0.7 × USIM1_VDD
V
OL
max=0.4V
V
OH
min=
0.8 × USIM1_VDD
USIM1_VDD
141
PO
(U)SIM1 card
power supply
Either 1.8V or
2.95V (U)SIM card
is supported.
USIM2_DET
256
DI
(U)SIM2 card
detection
V
IL
max=0.63V
V
IH
min=1.17V
Active Low.
Need external