Telit Wireless Solutions FN990 Series Hardware Design Guide

FN990 Family Hardware Design Guide
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Page 45 of 83
2024-05-29
Table 35: SIM Interface Signals
Pin
Signal
I/O
Function
Type
Comment
SIM Card Interface 1
36
UIM1_VCC
O
Supply output for an external UIM1 card
1.8V / 2.95V
Power
34
UIM1_DATA
I/O
Data connection with an external UIM1
card
1.8V / 2.95V
Internal 20k
PU
32
UIM1_CLK
O
Clock output to an external UIM1 card
1.8V / 2.95V
30
UIM1_RESET_N
O
Reset output to an external UIM1 card
1.8V / 2.95V
66
UIM1_PRESENT
I
UIM1 Card Present Detect
1.8V
Internal 100k
PU
Active High*
SIM Card Interface 2
48
UIM2_VCC
O
Supply output for an external UIM2 card
1.8V / 2.95V
Power
42
UIM2_DATA
I/O
Data connection with an external UIM2
card
1.8V / 2.95V
Internal 20k
PU
44
UIM2_CLK
O
Clock output to an external UIM2 card
1.8V / 2.95V
46
UIM2_RESET_N
O
Reset output to an external UIM2 card
1.8V / 2.95V
40
UIM2_PRESENT
I
UIM2 Card Present Detect
1.8V
Internal 100k
PU
Active High*
Note: * From xx3 official SW, the default UIM_PRESENT pin setting has been
changed from low to high to comply with the M.2 specification standard.
Pin settings can be changed through AT#SIMINCFG, please refer to the AT
commands reference guide for details.
If you have any special requirements, please contact Technical Support or Sales.
SIM Schematic Example
The diagram below shows in particular how the SIM part of the application interface
should be designed.
Figure 14: SIM Schematic Example

Telit Wireless Solutions FN990 Series Specifications

General

Brand	Telit Wireless Solutions
Model	FN990 Series
Category	Computer Hardware
Language	English