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USIM2_DATA
86
USIM2_CLK
84
USIM2_RST
85
USIM2_DET
83
Main UART Interface
Pin Name
Pin No.
MAIN_CTS
36
MAIN_RTS
37
MAIN_RXD
34
EG915U_Series_Hardware_Design
DIO
(U)SIM2 card data
DO
(U)SIM2 card clock
DO
(U)SIM2 card reset
(U)SIM2 card hot-plug
DI
detect
I/O
Description
DTE clear to send signal
DO
to DCE (connect to
DTE's CTS)
DTE request to send
DI
signal to DCE (connect
to DTE's RTS)
DI
Main UART receive
LTE Standard Module Series
1.8 V (U)SIM：
V
max = 0.6 V
IL
V
min = 1.26 V
IH
V
max = 0.45 V
OL
V
min = 1.35 V
OH
3.0 V (U)SIM：
V
max = 1.0 V
IL
V
min = 1.95 V
IH
V
max = 0.45 V
OL
V
min = 2.55 V
OH
1.8 V (U)SIM：
V
max = 0.45 V
OL
V
min = 1.35 V
OH
3.0 V (U)SIM：
V
max = 0.45 V
OL
V
min = 2.55 V
OH
1.8 V (U)SIM：
V
max = 0.45 V
OL
V
min = 1.35 V
OH
3.0 V (U)SIM：
V
max = 0.45 V
OL
V
min = 2.55 V
OH
V
min = -0.3 V
IL
V
max = 0.6 V
IL
V
min = 1.26 V
IH
V
max = 2.0 V
IH
DC Characteristics
V
max = 0.45 V
OL
V
min = 1.35 V
OH
V
min = -0.3 V
IL
V
max = 0.6 V
IL
V
min = 1.26 V
IH
V
max = 2.0 V
IH
V
min = -0.3 V
IL
V
max = 0.6 V
IL
V
min = 1.26 V
IH
V
max = 2.0 V
IH
1.8 V power
domain. If
unused, keep it
open
Comment
1.8 V power
domain.
If unused, keep it
open.
MAIN_DTR&
MAIN_DCD&
MAIN_RI will
have a period of
time when the
module is
powered on.
19 / 81
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