Smart Module Series
SC200K_Series_Hardware_Design 25 / 105
V
OH
min = 1.46 V
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
UART2_TXD
154
DO
UART2 transmit
V
OL
max = 0.20 V
V
OH
min = 1.46 V
UART2_RXD
153
DI
UART2 receive
V
IL
max = 0.48 V
V
IH
min = 1.39 V
SD Card Interface
Pin Name
Pin
No.
I/O
Description
DC
Characteristics
Comment
VDDSD
38
PO
Power supply for SD
card
Vnom = 3.0 V
I
O
max = 400 mA
It is suggested to add
an LDO with output
current of 1 A if an
external large-capacity
SD card is needed.
VDDSDIO
32
PO
Power supply for
SDIO pull-up circuit
Vnom = 3.0 V
I
O
max = 100 mA
Only for SD_DATA and
SD_CMD pull-up
circuits.
SD_DATA0
41
DIO
SDIO data bit 0
1.8 V SD card:
V
IL
max = 0.53 V
V
IH
min = 1.30 V
V
OL
max = 0.19 V
V
OH
min = 1.58 V
3.0 V SD card:
V
IL
max = 0.87 V
V
IH
min = 2.17 V
V
OL
max = 0.31 V
V
OH
min = 2.61 V
50 Ω single-ended
impedance.
SD_DATA1
42
DIO
SDIO data bit 1
SD_DATA2
43
DIO
SDIO data bit 2
SD_DATA3
44
DIO
SDIO data bit 3
SD_CMD
40
DIO
SD card command
SD_CLK
39
DO
SD card clock
1.8 V SD card:
V
OL
max = 0.19 V
V
OH
min = 1.58 V
3.0 V SD card:
V
OL
max = 0.31 V
V
OH
min = 2.61V
SD_DET
45
DI
SD card hot-plug
detect
V
IL
max = 0.48 V
V
IH
min = 1.39 V
Active low.
Touch Panel Interface
