User's Manual

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Note d’étude / Technical document : URD1– OTL 5665.1– 002 / 70 884 Edition 03
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3.1 HOW TO CONNECT TO A SIM CARD
Figure 2: SIM Card signals
HiloNC module provides the SIM signals on the 51 pads. A SIM card holder with 6 pads needs to be adopted to
use the SIM function.
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Decoupling capacitors have to be added on SIM_CLK, SIM_RST, VSIM and SIM_DATA signals as close
as possible to the SIM card connector to avoid EMC issues.
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Use ESD protection components to protect SIM card and module I/Os against Electro Static Discharges.
The following schematic show how to protect the SIM access for 6 pads connector.
Figure 3: Protections: EMC and ESD components close to the SIM