Quectel M10

M10 Hardware Design
M10_HD_V3.0 - 23 -
SD_CLK 2 O SD serial clock VILmax=
0.25*VDD_EXT
VIHmin=
0.75*VDD_EXT
VIHmax=
VDD_EXT+0.3
VOLmax=
0.15*VDD_EXT
VOHmin=
0.85*VDD_EXT
these pins open.
If used,
SD_DATA is
connected to SD
card DATA0 pin.
SD_CMD 3 O SD command
SIM interface
PIN NAME PIN
NO.
I/O DESCRIPTION DC
CHARACTERISTICS
COMMENT
SIM_VDD 12 O Voltage supply for
SIM card
The voltage can be
selected by software
automatically. Either
1.8V or 3V.
All signals of SIM
interface should be
protected against
ESD with a TVS
diode array.
Maximum cable
length is 200mm
from the module
pad to SIM card
holder.
SIM_DATA 13 I/O SIM data When SIM_VDD=3V
VILmax=0.4V
VIHmin=
SIM_VDD-0.4
VOLmax=0.4V
VOHmin=
SIM_VDD-0.4
When SIM_VDD=1.8V
VILmax=
0.15*SIM_VDD
VIHmin=
SIM_VDD-0.4
VOLmax=
0.15*SIM_VDD
VOHmin=
SIM_VDD-0.4
SIM_CLK 14 O SIM clock When SIM_VDD=3V
VILmax=0.4V
VIHmin=
0.9*SIM_VDD
VOLmax=0.4V
VOHmin=
0.9*SIM_VDD
When SIM_VDD=1.8V
VILmax=
0.12*SIM_VDD
VIHmin=