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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.
USIM2_DET
17
USIM2_RST
18
USIM2_CLK
19
USIM2_DATA
20
USIM2_VDD
21
USIM1_DET
22
USIM1_RST
23
USIM1_CLK
24
USIM1_DATA
25
USIM1_VDD
26
SC262R_Series_Hardware_Design
I/O
Description
DI
(U)SIM2 card hot-plug detect
DO
(U)SIM2 card reset
DO
(U)SIM2 card clock
DIO
(U)SIM2 card data
PO
(U)SIM2 card power supply
DI
(U)SIM1 card hot-plug detect
DO
(U)SIM1 card reset
DO
(U)SIM1 card clock
DIO
(U)SIM1 card data
PO
(U)SIM1 card power supply
Smart Module Series
Comment
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.
Cannot be multiplexed into
generic GPIOs.
Either 1.8 V or 2.95 V (U)SIM
card is supported and can be
identified automatically by the
module.
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.
Cannot be multiplexed into
generic GPIOs.
Either 1.8 V or 2.95 V (U)SIM
card is supported and can be
identified automatically by the
module.
47 / 115
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