LTE Standard Module Series
(U)SIM Interface
Pin Name
Pin No.
I/O
Description
DC
Characteristics
Comment
USIM_VDD
14
PO
(U)SIM card power
supply
1.8 V (U)SIM
：
Vmax = 1.9 V
Vmin = 1.7 V
3.0 V (U)SIM
：
Vmax = 3.05 V
Vmin = 2.7 V
Either 1.8 V or
3.0 V (U)SIM
card is
supported and
can be identified
automatically by
the module.
USIM_DATA
15
DIO
(U)SIM card data
1.8 V (U)SIM
：
V
IL
max = 0.6 V
V
IH
min = 1.2 V
V
OL
max = 0.45 V
V
OH
min = 1.35 V
3.0 V (U)SIM
：
V
IL
max = 1.0 V
V
IH
min = 1.95 V
V
OL
max = 0.45 V
V
OH
min = 2.55 V
USIM_CLK
16
DO
(U)SIM card clock
1.8 V (U)SIM
：
V
OL
max = 0.45 V
V
OH
min = 1.35 V
3.0 V (U)SIM
：
V
OL
max = 0.45 V
V
OH
min = 2.55 V
USIM_RST
17
DO
(U)SIM card reset
USIM_DET
13
DI
(U)SIM card hot-plug
detect
V
IL
min = -0.3 V
V
IL
max = 0.6 V
V
IH
min = 1.2 V
V
IH
max = 2.0 V
1.8 V power
domain.
If unused, keep
it open.
SD Interface
Pin Name
Pin No.
I/O
Description
DC
Characteristics
Comment
SD_SDIO_CLK
32
DO
SD card SDIO clock
1.8/2.8 V power
domain.
If unused, keep
it open.
SD_SDIO_CMD
33
DIO
SD card
SDIO command
SD_SDIO_DATA0 31
DIO
SD card
SDIO bit 0
SD_SDIO_DATA1 30
DIO
SD card
SDIO bit 1
