Smart Module Series
SC200L_Series(Dual-band Wi-Fi)_Hardware_Design 25 / 111
USIM1_RST
23
DO
(U)SIM1 card
reset
V
OL
max =
0.1 × USIM1_VDD
V
OH
min =
0.9 × USIM1_VDD
USIM1_CLK
24
DO
(U)SIM1 card
clock
V
OL
max =
0.1 × USIM1_VDD
V
OH
min =
0.9 × USIM1_VDD
USIM1_DATA
25
DIO
(U)SIM1 card
data
V
IL
max =
0.3 × USIM1_VDD
V
IH
min =
0.7 × USIM1_VDD
V
OL
max =
0.1 × USIM1_VDD
V
OH
min =
0.9 × USIM1_VDD
USIM1_VDD
26
PO
(U)SIM1 card
power supply
1.80 V (U)SIM:
Vmax = 1.85 V
Vmin = 1.75 V
2.95 V (U)SIM:
Vmax = 3.1 V
Vmin = 2.90 V
Either 1.8 V or 2.95 V
(U)SIM card is
supported.
UART Interfaces
Pin Name
Pin
No.
I/O
Description
DC Characteristics
Comment
UART0_TXD
34
DO
UART0 transmit
V
OL
max = 0.20 V
V
OH
min = 1.46 V
1.85 V power domain.
If not used, keep these
pins open.
UART0_RXD
35
DI
UART0 receive
V
IL
max = 0.48 V
V
IH
min = 1.39 V
UART0_CTS
36
DI
DCE clear to
send
V
IL
max = 0.48 V
V
IH
min = 1.39 V
UART0_RTS
37
DO
DCE request to
send
V
OL
max = 0.20 V
V
OH
min = 1.46 V
DBG_RXD
93
DI
Debug UART
receive
V
IL
max = 0.48 V
V
IH
min = 1.39 V
DBG_TXD
94
DO
Debug UART
transmit
V
OL
max = 0.20 V
V
OH
min = 1.46 V
SD Card Interface
Pin Name
Pin
No.
I/O
Description
DC Characteristics
Comment