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LTE-A Module Series
EG18 Hardware Design
EG18_Hardware_Design 23 / 104
(U)SIM1 card
V
IL
max=0.36V
V
IH
min=1.26V
V
OL
max=0.4V
V
OH
min=1.45V
For 3.0V (U)SIM:
V
IL
max=0.57V
V
IH
min=2.0V
V
OL
max=0.4V
V
OH
min=2.3V
USIM2_VDD
74
PO
Power supply for
(U)SIM2 card
For 1.8V (U)SIM:
Vmax=1.9V
Vmin=1.7V
For 3.0V (U)SIM:
Vmax=3.05V
Vmin=2.75V
Iomax=50mA
Either 1.8V or 3.0V
is supported by the
module
automatically.
If (U)SIM2 interface
is unused, keep it
open.
USIM2_DATA
77
IO
Data signal of
(U)SIM2 card
For 1.8V (U)SIM:
V
IL
max=0.36V
V
IH
min=1.26V
V
OL
max=0.4V
V
OH
min=1.45V
For 3.0V (U)SIM:
V
IL
max=0.57V
V
IH
min=2V
V
OL
max=0.4V
V
OH
min=2.3V
If (U)SIM2 interface
is unused, keep it
open.
USIM2_DET
78
DI
(U)SIM2 card
insertion detection
V
IL
min=-0.3V
V
IL
max=0.6V
V
IH
min=1.2V
V
IH
max=2.0V
1.8V power domain.
If (U)SIM2 interface
is unused, keep it
open.
USIM2_RST
79
DO
Reset signal of
(U)SIM2 card
For 1.8V (U)SIM:
V
OL
max=0.4V
V
OH
min=1.45V
For 3.0V (U)SIM:
V
OL
max=0.4V
V
OH
min=2.3V
If (U)SIM2 interface
is unused, keep it
open.
USIM2_CLK
80
DO
Clock signal of
(U)SIM2 card
For 1.8V (U)SIM:
V
OL
max=0.4V
V
OH
min=1.45V
If (U)SIM2 interface
is unused, keep it
open.