Quectel EC25-AUX

LTE Standard Module Series
EC25 Hardware Design
EC25_Hardware_Design 30 / 130
V
IH
max=3.34V
SDC2_
DATA1
30 IO
SD card SDIO bus
DATA1
1.8V signaling:
V
OL
max=0.45V
V
OH
min=1.4V
V
IL
min=-0.3V
V
IL
max=0.58V
V
IH
min=1.27V
V
IH
max=2.0V
3.0V signaling:
V
OL
max=0.38V
V
OH
min=2.01V
V
IL
min=-0.3V
V
IL
max=0.76V
V
IH
min=1.72V
V
IH
max=3.34V
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_
DATA0
31 IO
SD card SDIO bus
DATA0
1.8V signaling:
V
OL
max=0.45V
V
OH
min=1.4V
V
IL
min=-0.3V
V
IL
max=0.58V
V
IH
min=1.27V
V
IH
max=2.0V
3.0V signaling:
V
OL
max=0.38V
V
OH
min=2.01V
V
IL
min=-0.3V
V
IL
max=0.76V
V
IH
min=1.72V
V
IH
max=3.34V
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
1.8V signaling:
V
OL
max=0.45V
V
OH
min=1.4V
3.0V signaling:
V
OL
max=0.38V
V
OH
min=2.01V
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=0.45V
V
OH
min=1.4V
V
IL
min=-0.3V
SDIO signal level can
be selected according
to SD card supported
level, please refer to