Smart Module Series
SC606T Series Hardware Design
SC606T_Series_Hardware_Design 29 / 116
0.2 × USIM2_VDD
V
IH
min =
0.7 × USIM2_VDD
V
OL
max = 0.4 V
V
OH
min =
0.8 × USIM2_VDD
up to USIM2_VDD
with a 10 k
Ω resistor.
USIM2_VDD
210
PO
(U)SIM2 card
power supply
1.8 V (U)SIM:
Vmax = 1.90 V
Vmin = 1.70 V
2.95 V (U)SIM:
Vmax = 3.04 V
Vmin = 2.7 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
UART2_TXD
5
DO
UART2 transmit
V
OL
max = 0.45 V
V
OH
min = 1.35 V
1.8 V power domain.
If unused, keep these
pins open.
UART2_RXD
6
DI
UART2 receive
V
IL
max = 0.63 V
V
IH
min = 1.17 V
UART4_TXD
7
DO
UART4 transmit
V
OL
max = 0.45 V
V
OH
min = 1.35 V
UART4_RXD
8
DI
UART4 receive
V
IL
max = 0.63 V
V
IH
min = 1.17 V
UART5_RXD
198
DI
UART5 receive
V
IL
max = 0.63 V
V
IH
min = 1.17 V
UART5_TXD
199
DO
UART5 transmit
V
OL
max = 0.45 V
V
OH
min = 1.35 V
UART5_RTS
245
DO
UART5 request to
send
V
OL
max = 0.45 V
V
OH
min = 1.35 V
UART5_CTS
246
DI
UART5 clear to
send
V
IL
max = 0.63 V
V
IH
min = 1.17 V
SD Card Interface
Pin Name
Pin No. I/O
Description
DC Characteristics Comment
SD_CLK
70
DO
SD card clock
1.8 V SD card:
V
OL
max = 0.45 V
V
OH
min = 1.4 V
2.95 V SD card:
V
OL
max = 0.37 V
V
OH
min = 2.2 V
SD_CMD
69
DIO
SD card command
1.8 V SD card:
V
IL
max = 0.58 V
