Product Info

Smart LTE Module Series
SC66 Hardware Design
SC66_Hardware_Design 34 / 118
LPI_UART_2_T
XD
60
DO
UART2 transmit
data
V
OL
max=0.45V
V
OH
min=1.35V
LPI_UART_2_R
XD
61
DI
UART2 receive
data
V
IL
max=0.63V
V
IH
min=1.17V
SD Card Interface
Pin Name
Pin
o.
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=0.368V
V
OH
min=2.125V
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=0.737V
V
IH
min=1.843V
V
OL
max=0.368V
V
OH
min=2.125V
SD_DATA0
68
IO
High speed
bidirectional digital
signal lines of SD
card
SD_DATA1
67
IO
SD_DATA2
66
IO
SD_DATA3
65
IO
SD_DET
64
DI
SD card insertion
detection
V
IL
max=0.63V
V
IH
min=1.17V
Active low.
SD_VDD
63
PO
Power supply for
SD card
Vnorm=2.95V
I
O
max=600mA
SD_PU_VDD
179
PO
2.95V output
Vnorm=1.8V/2.95V
I
O
max=50mA
Power supply for
SD card’s pull-up
circuit.
TP (Touch Panel) Interfaces
Pin Name
Pin N
I/O
Description
DC Characteristics
Comment