User's Manual

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5.13. SIM CARD CONSIDERATIONS
IO200 includes a SIM card driver, however it does not contain a SIM socket. SIM signals are routed to the 6-pin ZIF interface
connector.
The connector includes all the functionality required for SIM card operation. The SIM card socket must be located on the
customer’s board and connected to IO200 interface connector as shown in Figure below.
5.14. SIM Connection
Figure 4. Shows IO200 SIM connection
The following applies to IO200 SIM connections:
• IO200 passes all SIM ETSI tests when an external socket is connected to IO200 with lines shorter than 6.5 cm.
• Longer connections require SIM testing, under integrator’s responsibility.
• IO200 works with 3V SIM cards.
• IO200 provides ESD protection on SIM VCC line (6V Zener diode with low capacitance and 0.1uF cap.
• RC network was added on all lines to protect against EMI interference.
A SIM card should be replaced with the unit powered off.
If the SIM card is replaced with the unit powered on then the user must cycle power (turn off and then turn
on) after the replacement.
Note
SIM
Driver
IO200 6-Pin
ZIF Interface
Connector
User Application
SIM VCC
SIM RESET
SIM Clock
SIM I_O
SIM VPP (NC)
GROUND
6
4
1
5/3
2
0.1uF
6V
Zener
Resistor
Network
&
Zener
Diodes
VSIM