Smart Module Series
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4.3. (U)SIM Interfaces
The module provides two (U)SIM interfaces which 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
interfaces are powered by the dedicated low dropout regulators in the module.
Table 14: Pin Definition of (U)SIM Interface
Pin Name
Pin No.
I/O
Description
Comment
USIM1_VDD
141
PO
(U)SIM1 card power supply
Either 1.8 V or 2.95 V
(U)SIM card is supported.
USIM1_DATA
142
DIO
(U)SIM1 card data
USIM1_CLK
143
DO
(U)SIM1 card clock
USIM1_RST
144
DO
(U)SIM1 card reset
USIM1_DET
145
DI
(U)SIM1 card hot-plug detect
Active Low.
Require external pulled up
to 1.8 V.
If unused, keep this pin
open.
Disabled by default, and
can be enabled through
software configuration.
USIM2_VDD
210
PO
(U)SIM2 card power supply
Either 1.8 V or 2.95 V
(U)SIM card is supported.
USIM2_DATA
209
DIO
(U)SIM2 card data
USIM2_CLK
208
DO
(U)SIM2 card clock
USIM2_RST
207
DO
(U)SIM2 card reset
USIM2_DET
256
DI
(U)SIM2 card detect
Active Low.
Require external pulled up
to 1.8 V.
If unused, keep this pin
open.
Disabled by default, and
can be enabled through
software configuration.
