Smart LTE Module Series
SC600Y&SC600T Hardware Design
SC600Y&SC600T_Hardware_Design 33 / 128
UART4_RXD
8
DI
UART4 receive data
V
IL
max=0.63V
V
IH
min=1.17V
UART5_RXD
198
DI
UART5 receive data
V
IL
max=0.63V
V
IH
min=1.17V
UART5_TXD
199
DO
UART5 transmit
data
V
OL
max=0.45V
V
OH
min=1.35V
UART5_RTS
245
DO
UART5 request to
send
V
OL
max=0.45V
V
OH
min=1.35V
UART5_CTS
246
DI
UART5 clear to
send
V
IL
max=0.63V
V
IH
min=1.17V
SD Card Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics Comment
SD_CLK
70
DO
High speed digital
clock signal of SD
card
1.8V SD card:
V
OL
max=0.45V
V
OH
min=1.4V
2.95V SD card:
V
OL
max=0.37V
V
OH
min=2.2V
SD_CMD
69
IO
Command signal of
SD card
1.8V SD card:
V
IL
max=0.58V
V
IH
min=1.27V
V
OL
max=0.45V
V
OH
min=1.4V
2.95V SD card:
V
IL
max=0.73V
V
IH
min=1.84V
V
OL
max=0.37V
V
OH
min=2.2V
SD_DATA0
68
IO
High speed
bidirectional digital
signal lines of SD
card
1.8V SD card:
V
IL
max=0.58V
V
IH
min=1.27V
V
OL
max=0.45V
V
OH
min=1.4V
2.95V SD card:
V
IL
max=0.73V
V
IH
min=1.84V
V
OL
max=0.37V
SD_DATA1
67
IO
SD_DATA2
66
IO