Smart Module Series
SC262R_Series_Hardware_Design 26 / 115
USIM2_VDD
21
PO
(U)SIM2 card
power supply
I
O
max = 55 mA
For 1.8 V (U)SIM:
Vmax = 1.85 V
Vmin = 1.75 V
For 2.95 V (U)SIM:
Vmax = 3.1 V
Vmin = 2.8 V
Either 1.8 V or
2.95 V (U)SIM card
is supported and
can be identified
automatically by the
module.
USIM1_DET
22
DI
(U)SIM1 card
hot-plug detect
V
IL
max = 0.63 V
V
IH
min = 1.17 V
Active low.
Externally pull it up
to 1.8 V.
If it is not used,
keep it open.
This function is
disabled by default
via software.
Cannot be
multiplexed into a
generic GPIO.
USIM1_RST
23
DO
(U)SIM1 card reset V
OL
max = 0.4 V
V
OH
min =
0.8 × USIM1_VDD
Cannot be
multiplexed into
generic GPIOs.
USIM1_CLK
24
DO
(U)SIM1 card
clock
USIM1_DATA
25
DIO
(U)SIM1 card data
V
IL
max =
0.2 × USIM1_VDD
V
IH
min =
0.7 × USIM1_VDD
V
OL
max = 0.4 V
V
OH
min =
0.8 × USIM1_VDD
USIM1_VDD
26
PO
(U)SIM1 card
power supply
I
O
max = 55 mA
For 1.8 V (U)SIM:
Vmax = 1.85 V
Vmin = 1.75 V
For 2.95 V (U)SIM:
Vmax = 3.1 V
Vmin = 2.8 V
Either 1.8 V or
2.95 V (U)SIM card
is supported and
can be identified
automatically by the
module.
UART Interfaces
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
