Smart Module Series
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3.11. (U)SIM Interfaces
SC262R series module provides two (U)SIM interfaces that meet ETSI and IMT-2000 requirements. Dual
SIM Dual Standby is supported by default. Either 1.8 V or 2.95 V (U)SIM card is supported, and the
(U)SIM card is powered by the internal power supply of the module.
Table 12: Pin Definition of (U)SIM Interfaces
Pin Name
Pin No.
I/O
Description
Comment
USIM2_DET
17
DI
(U)SIM2 card hot-plug detect
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.
USIM2_RST
18
DO
(U)SIM2 card reset
Cannot be multiplexed into
generic GPIOs.
USIM2_CLK
19
DO
(U)SIM2 card clock
USIM2_DATA
20
DIO
(U)SIM2 card data
USIM2_VDD
21
PO
(U)SIM2 card power supply
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
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
Cannot be multiplexed into
generic GPIOs.
USIM1_CLK
24
DO
(U)SIM1 card clock
USIM1_DATA
25
DIO
(U)SIM1 card data
USIM1_VDD
26
PO
(U)SIM1 card power supply
Either 1.8 V or 2.95 V (U)SIM
card is supported and can be
identified automatically by the
module.