Smart Module Series
SC200L_Series(Dual-band Wi-Fi)_Hardware_Design 26 / 111
SD_VDD
38
PO
SD card power
supply
Vnom = 3.00 V
I
O
max = 400 mA
If a large-capacity
T-Flash card is to be
connected, it is
recommended to add an
LDO which can supply
1 A current.
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 = 2.61 V
50
Ω characteristic
impedance.
SD_CMD
40
DIO
SD card
command
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
SD_DATA0
41
DIO
SDIO data bits
SD_DATA1
42
DIO
SD_DATA2
43
DIO
SD_DATA3
44
DIO
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 (TP) Interface
Pin Name
Pin
No.
I/O
Description
DC Characteristics
Comment
TP_INT
30
DI
TP interrupt
V
IL
max = 0.48 V
V
IH
min = 1.39 V
1.85 V power domain.
TP_RST
31
DO
TP reset
V
OL
max = 0.20 V
V
OH
min = 1.46 V
1.85 V power domain.
Active low.
TP_I2C_SCL
47
OD
TP I2C clock
1.85 V power domain.
Can be used for other
I2C devices.
TP_I2C_SDA
48
OD
TP I2C data
LCM Interface
Pin Name
Pin
No.
I/O
Description
DC Characteristics
Comment
PWM
29
DO
PWM output
V
OL
max = 0.20 V
V
OH
min = 1.46 V
Adjusts backlight
brightness.
1.85 V power domain.
