Smart LTE Module Series
SC600Y&SC600T Hardware Design
SC600Y&SC600T_Hardware_Design 32 / 128
USIM2_DET
256
DI
(U)SIM2 card
detection
V
IL
max=0.63V
V
IH
min=1.17V
Active Low.
Need external pull-up
to 1.8V.
If unused, keep this
pin open.
Disabled by default,
and can be enabled
through
software
configuration.
USIM2_RST
207
DO
(U)SIM2 card reset
signal
V
OL
max=0.4V
V
OH
min=
0.8 × USIM2_VDD
USIM2_CLK
208
DO
(U)SIM2 card clock
signal
V
OL
max=0.4V
V
OH
min=
0.8 × USIM2_VDD
USIM2_DATA
209
IO
(U)SIM2 card data
signal
V
IL
max=
0.2 × USIM2_VDD
V
IH
min=
0.7 × USIM2_VDD
V
OL
max=0.4V
V
OH
min=
0.8 × USIM2_VDD
USIM2_VDD
210
PO
(U)SIM2 card power
supply
1.8V (U)SIM:
Vmax=1.85V
Vmin=1.75V
2.95V (U)SIM:
Vmax=3.1V
Vmin=2.8V
Either 1.8V or 2.95V
(U)SIM card is
supported.
UART Interfaces
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
UART2_TXD
5
DO
UART2 transmit
data.
Debug port by
default.
V
OL
max=0.45V
V
OH
min=1.35V
1.8V power domain.
If unused, keep these
pins open.
UART2_RXD
6
DI
UART2 receive
data.
Debug port by
default.
V
IL
max=0.63V
V
IH
min=1.17V
UART4_TXD
7
DO
UART4 transmit
data
V
OL
max=0.45V
V
OH
min=1.35V