Product Info

LTE Standard Module Series
EC25 Series Hardware Design
EC25_Series_Hardware_Design 33 / 134
V
OH
min = 1.4 V
V
IL
min = -0.3 V
V
IL
max = 0.58 V
V
IH
min = 1.27 V
V
IH
max = 2.0 V
3.0 V signaling:
V
OL
max = 0.38 V
V
OH
min = 2.01 V
V
IL
min = -0.3 V
V
IL
max = 0.76 V
V
IH
min = 1.72 V
V
IH
max = 3.34 V
be selected according
to SD card supported
level, please refer to
SD 3.0 protocol for
more details.
If unused, keep it
open.
SDC2_
DATA0
31
IO
SD card SDIO bus
DATA0
1.8 V signaling:
V
OL
max = 0.45 V
V
OH
min = 1.4 V
V
IL
min = -0.3 V
V
IL
max = 0.58 V
V
IH
min = 1.27 V
V
IH
max = 2.0 V
3.0 V signaling:
V
OL
max = 0.38 V
V
OH
min = 2.01 V
V
IL
min = -0.3 V
V
IL
max = 0.76 V
V
IH
min = 1.72 V
V
IH
max = 3.34 V
SDIO signal level can
be selected according
to SD card supported
level, please refer to
SD 3.0 protocol for
more details.
If unused, keep it
open.
SDC2_CLK
32
DO
SD card SDIO bus
clock
1.8 V signaling:
V
OL
max = 0.45 V
V
OH
min = 1.4 V
3.0 V signaling:
V
OL
max = 0.38 V
V
OH
min = 2.01 V
SDIO signal level can
be selected according
to SD card supported
level, please refer to
SD 3.0 protocol for
more details.
If unused, keep it
open.
SDC2_CMD
33
IO
SD card SDIO bus
command
1.8V signaling:
V
OL
max = 0.45 V
V
OH
min = 1.4 V
V
IL
min = -0.3 V
V
IL
max = 0.58 V
V
IH
min = 1.27 V
V
IH
max = 2.0 V
SDIO signal level can
be selected according
to SD card supported
level, please refer to
SD 3.0 protocol for
more details.
If unused, keep it
open.