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FIBOCOM FM150-NA User Manual
Page 50 of 72
3.5 USIM Interface
The FM150 module supports dual SIM card single standby, has dual built-in USIM card interface, which
supports 1.8V and 3V SIM cards.
3.5.1 USIM1 Pins
The USIM1 pins description as shown in the following table:
Pin Pin Name
I/O Reset Value Description
Type
36
UIM1_PWR
PO -
USIM1 power supply
1.8V/3V
30
UIM1_RESET
O
L
USIM1 reset
1.8V/3V
32
UIM1_CLK
O
L
USIM1 clock
1.8V/3V
34
UIM1_DATA
I/O L
USIM1 data, internal pull up(20KΩ)
1.8V/3V
66
SIM1_DETECT
I
PU
USIM1 card detect, internal 390K
pull-up.
Active high, and high level indicates
SIM card is inserted; and low level
indicates SIM card is detached.
1.8V
3.5.2 USIM2 Pins
The USIM2 pins description is shown in the following table:
Pin Pin Name
I/O Reset Value Description
Type
48
UIM2_PWR
PO -
USIM2 power supply
1.8V/3V
46
UIM2_RESET
O
L
USIM2 reset
1.8V/3V
44
UIM2_CLK
O
L
USIM2 clock
1.8V/3V
42
UIM2_DATA
I/O L
USIM2 data, internal pull up(20KΩ)
1.8V/3V
40
SIM2_DETECT
I
PU
USIM2 card detect, internal 390K
pull-up.
Active high, and high level indicates
SIM card is inserted; and low level
indicates SIM card is detached.
1.8V