User Manual
Table Of Contents
- Confidential Material
- Copyright
- Revision History
- Trademarks Notice
- Contents
- Preface
- Introduction
- Hardware Interface Description
- Electrical and Environmental Specifications Absolute Maximum Ratings
- Mechanical Design
- Antenna Interface
G610 GPRS Module Hardware User Manual Page 26 of 47
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: If SIM_VCC is supplied, remove SIM card is prohibited. In case, it would damage
both SIM card and G610.
G610 Pin# G610 Signal name Description
5 SIM_CLK Serial 3.25 MHz clock
2 SIM_VCC 2.85V Supply to the SIM
4 SIM_DATA Serial input and output data
6 SIM_RST Active low SIM reset signal
3 SIM_CD SIM card on site detected
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