U)Sim Interfaces - Quectel SC606T Series Hardware Design

3.10. (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. Both 1.8 V and 2.95 V (U)SIM cards are supported, and the (U)SIM
interfaces are powered via dedicated LDOs in the module.
Table 12: Pin Definition of (U)SIM Interfaces
Pin Name Pin No.
USIM1_DET 145
USIM1_RST 144
USIM1_CLK 143
USIM1_DATA 142
USIM1_VDD 141
USIM2_DET 256
USIM2_RST 207
USIM2_CLK 208
USIM2_DATA 209
USIM2_VDD 210
The module supports (U)SIM card hot-plug via the USIM_DET pin, which is disabled by default and can
be enabled through software configuration. A reference design for the (U)SIM interfaces connected with
SC606T_Series_Hardware_Design
I/O Description
(U)SIM1 card hot-plug
DI
detect
DO (U)SIM1 card reset
DO (U)SIM1 card clock
DIO (U)SIM1 card data
PO (U)SIM1 card power supply
(U)SIM2 card hot-plug
DI
detect
DO (U)SIM2 card reset
DO (U)SIM2 card clock
DIO (U)SIM2 card data
PO (U)SIM2 card power supply
Smart Module Series
SC606T Series Hardware Design
Comment
Active low.
Require to be externally pulled up
to 1.8 V.
If unused, keep this pin open.
Disabled by default, and can be
enabled through software
configuration.
Require to be pulled up to
USIM1_VDD with a 10 kΩ
resistor.
Either 1.8 V or 2.95 V (U)SIM card
is supported.
Active low.
Require to be externally pulled up
to 1.8 V.
If unused, keep this pin open.
Disabled by default and can be
enabled through software
configuration.
Require to be pulled up to
USIM2_VDD with
resistor.
Either 1.8 V or 2.95 V (U)SIM card
is supported.
a 10 kΩ
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