Sim Connection; Sim Design Guidelines - Fibocom G610 Hardware User Manual

The G610 supports 1.8V or 3.0V SIM card automatic. While the G610 turn on by POWER_ON.
At first SIM_VCC output 1.8V voltage for external SIM card communication. If it is not successful
SIM_VCC output 2.85V voltage and communicated SIM card again.
Important:
both SIM card and G610.
G610 Pin#
5
2
4
6
3

3.8.1 SIM Connection

The figure illustrates a typical SIM interface connection to G610. This connection type is
implemented on the G610 Developer Board, using an MOLEX SIM tray, PN 912283001 &
912360001.

3.8.2 SIM Design Guidelines

The SIM interface and signals design is extremely important for proper operation of G610 and
the SIM card. There are several design guidelines that must be followed to achieve a robust and
stable design that meets the required standards and regulations.
 The SIM should be located, and its signals should be routed, away from any possible EMI
G610 GPRS Module Hardware User Manual
If SIM_VCC is supplied, remove SIM card is prohibited. In case, it would damage
G610 Signal name
SIM_CLK
SIM_VCC
SIM_DATA
SIM_RST
SIM_CD
Description
Serial 3.25 MHz clock
2.85V Supply to the SIM
Serial input and output data
Active low SIM reset signal
SIM card on site detected
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