LE940B6 HW User Guide
Rev. 2.02
Page 96 of 111
2020-01-10
SIM Interface
This section presents the recommended schematics for the design of SIM interfaces on
the application boards. The LE940B6 supports two external SIM interfaces.
11.3.1.
SIM Schematic Example
Figure 30 illustrates in particular how to design the application side and what values to
assign the components.
Figure 30: SIM Schematics
NOTE:
An external pull-up resistor on SIMIO is not required.
The LE940B6 module contains an internal pull-up resistor on SIMIO.
Table 38 lists the values of C1 to be adopted with the LE940B6 product:
Table 38: SIM Interface
– C1 Range
Product P/N
C1 Range (nF)
LE940B6
100 nF
Refer to the following document for details:
•
Ref 4: SIM Integration Design Guide
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