SIM300
HARDWARE
SPECIFICATION
SIMCOM Ltd,.
22
th
Nov 2005
SIM300 Hardware Interface Description
Confidential
SIMCOM
SIM300_HD_V1.05 Page 2 of 53
Document Name:
SIM300 Hardware Interface Description
Version:
01.05
Date:
2005-11-22
Doc Id:
SIM300_HD_V1.05
Status:
Release
General Notes
Simcom offers this information as a service to its customers, to support application and
engineering efforts that use Simcom products. The information provided is based upon
requirements specifically provided to Simcom by the customers. Simcom has not undertaken any
independent search for additional relevant information, including any information that may be in
the customer’s possession. Furthermore, system validation of this Simcom product within a larger
electronic system remains the responsibility of the customer or the customer’s system integrator.
All specifications supplied herein are subject to change.
Copyright
This document contains proprietary technical information which is the property of SIMCOM
Limited., copying of this document and giving it to others and the using or communication of the
contents thereof, are forbidden without express authority. Offenders are liable to the payment of
damages. All rights reserved in the event of grant of a patent or the registration of a utility model
or design. All specification supplied herein are subject to change without notice at any time.
Copyright © SIMCOM Limited. 2005
SIM300 Hardware Interface Description
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SIMCOM
SIM300_HD_V1.05 Page 3 of 53
Contents
Contents ............................................................................................................................................3
Version History .................................................................................................................................6
1 Introduction....................................................................................................................................7
1.1 Related documents ..............................................................................................................7
1.2 Terms and abbreviations......................................................................................................8
2 Product concept............................................................................................................................11
2.1 SIM300 key features at a glance .......................................................................................11
3 Application Interface....................................................................................................................14
3.1 SIM300 Pin description.....................................................................................................14
3.2 Operating modes ...............................................................................................................16
3.3 Power supply.....................................................................................................................17
3.3.1 Power supply pins on the board-to-board connector..............................................18
3.3.2 Minimizing power losses .......................................................................................18
3.3.3 Monitoring power supply.......................................................................................18
3.4 Power up and power down scenarios ................................................................................19
3.4.1 Turn on SIM300 .....................................................................................................19
3.4.2 Turn off SIM300 ....................................................................................................20
3.4.3 Restart SIM300 using the PWRKEY pin ...............................................................22
3.5 Power saving .....................................................................................................................23
3.5.1 Minimum functionality mode.................................................................................23
3.5.2 Sleep mode (Slow Clocking mode)........................................................................23
3.5.3 Wake up SIM300 from SLEEP mode ....................................................................24
3.6 Summary of state transitions (except SLEEP mode) ........................................................24
3.7 RTC backup.......................................................................................................................24
3.8 Serial interfaces.................................................................................................................27
3.8.1 Function of Serial Port 1 & 2 supporting ...............................................................28
3.9 Audio interfaces ................................................................................................................29
3.9.1 Speaker interface configuration .............................................................................30
3.9.2 Microphone interfaces configuration .....................................................................31
3.9.3 Earphone interface configuration...........................................................................31
3.9.4 Referenced Electronic Characteristic .....................................................................32
3.10 Buzzer .............................................................................................................................32
3.11 SIM card interface...........................................................................................................33
3.11.1 SIM card application............................................................................................33
3.11.2 Design considerations for SIM card holder..........................................................35
3.12 LCD interface..................................................................................................................37
3.13 ADC ................................................................................................................................37
3.14 Behaviors of the /RING line (Serial port1 interface only) ..............................................38
3.15 Network status indication LED lamp..............................................................................39
3.16 General Purpose Input Output(GPIO).............................................................................40
4 Antenna interface .........................................................................................................................41
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4.1 Antenna installation...........................................................................................................41
4.1.1 Antenna connector .................................................................................................41
4.1.2 Antenna pad ...........................................................................................................41
4.2 Module RF output power ..................................................................................................41
4.3 Module RF receive sensitivity...........................................................................................42
4.4 Module receive/transmit frequency...................................................................................42
4.5 Antenna gain .....................................................................................................................42
5 Electrical, reliability and radio characteristics .............................................................................43
5.1 Absolute maximum ratings ...............................................................................................43
5.2 Operating temperatures .....................................................................................................43
5.3 Power supply ratings.........................................................................................................44
5.4 Current Consumption........................................................................................................45
5.5 Electrostatic discharge.......................................................................................................46
6 Mechanics ....................................................................................................................................47
6.1 Mechanical dimensions of SIM300...................................................................................47
6.2 Mounting SIM300 onto the application platform..............................................................48
6.3 Board-to-board connector .................................................................................................48
6.3.1 Mechanical dimensions of the ENTERY 1008-G60N-01R ...................................48
6.3.2 Mechanical dimensions of the MOLEX 53729-0608 ............................................49
6.4 RF Adapter cabling ...........................................................................................................51
6.5 PIN assignment of board-to-board connector of SIM300.................................................53
Table index:
TABLE 1：RELATED DOCUMENTS ...................................................................................................7
TABLE 2：TERMS AND ABBREVIATIONS........................................................................................8
TABLE 3：SIM300 KEY FEATURES.................................................................................................. 11
TABLE 4：CODING SCHEMES AND MAXIMUM NET DATA RATES OVER AIR INTERFACE 13
TABLE 5：BOARD-TO-BOARD CONNECTOR PIN DESCRIPTION .............................................14
TABLE 6：OVERVIEW OF OPERATING MODES............................................................................16
TABLE 7：AT COMMANDS USED IN ALARM MODE................................................................... 20
TABLE 8：SUMMARY OF STATE TRANSITIONS...........................................................................24
TABLE 9: LOGIC LEVELS OF SERIAL PORTS PINS ......................................................................28
TABLE 10：AUDIO INTERFACE SIGNAL........................................................................................29
TABLE 11：MIC INPUT DC CHARACTERISTICS...........................................................................32
TABLE 12：AUDIO OUTPUT CHARACTERISTICS........................................................................32
TABLE 13：BUZZER OUTPUT DC CHARACTERISTICS...............................................................32
TABLE 14：SIGNAL OF SIM INTERFACE (BOARD-TO-BOARD CONNECTOR) .......................34
TABLE 15：PIN DESCRIPTION (AMPHENOL SIM CARD HOLDER)...........................................36
TABLE 16：PIN DESCRIPTION (MOLEX SIM CARD HOLDER) ..................................................37
TABLE 17：PIN DEFINE OF LCD INTERFACE ...............................................................................37
TABLE 18：ADC PIN OF SIM300.......................................................................................................38
TABLE 19：BEHAVIOURS OF THE /RING LINE.............................................................................38
TABLE 20：WORKING STATE OF NETWORK STATUS INDICATION LED PIN.........................39
TABLE 21：GPIO PINS OF SIM300....................................................................................................40
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TABLE 22：SIM300 RF OUTPUT POWER ........................................................................................41
TABLE 23：SIM300 RF RECEIVE SENSITIVITY.............................................................................42
TABLE 24：SIM300 RECEIVE/TRANSMIT FREQUENCY..............................................................42
TABLE 25：ANTENNA GAIN............................................................................................................. 42
TABLE 26：ABSOLUTE MAXIMUM RATINGS ..............................................................................43
TABLE 27：SIM300 OPERATING TEMPERATURE ......................................................................... 43
TABLE 28：SIM300 POWER SUPPLY RATINGS.............................................................................. 44
TABLE 29：SIM300 CURRENT CONSUMPTION ............................................................................45
TABLE 30：THE ESD ENDURE STATUE MEASURED TABLE (TEMPERATURE: 25℃,
HUMIDITY:45% ) .........................................................................................................................46
TABLE 31：CONNECTION DIAGRAMS ..........................................................................................53
Figure Index
FIGURE 1：VBAT INPUT....................................................................................................................18
FIGURE 2：VBAT RIPPLE WAVE AT THE MAXIMUM POWER TRANSMIT PHASE.................18
FIGURE 3：TIMING OF TURN ON SYSTEM ................................................................................... 19
FIGURE 4：TIMING OF TURN OFF SYSTEM..................................................................................21
FIGURE 5：TIMING OF RESTART SYSTEM....................................................................................22
FIGURE 6：RTC SUPPLY FROM NON-CHARGEABLE BATTERY ...............................................25
FIGURE 7：RTC SUPPLY FROM RECHARGEABLE BATTERY ....................................................25
FIGURE 8：RTC SUPPLY FROM CAPACITOR.................................................................................25
FIGURE 9：PANASONIC EECEMOE204A CHARGE CHARACTERISTIC....................................26
FIGURE 10：MAXELL TC614 CHARGE CHARACTERISTIC ........................................................26
FIGURE 11：SEIKO TS621 CHARGE CHARACTERISTIC ............................................................. 27
FIGURE 12：INTERFACE OF SERIAL PORTS .................................................................................28
FIGURE 13：SPEAKER INTERFACE CONFIGURATION ...............................................................30
FIGURE 14：SPEAKER INTERFACE WITH AMPLIFIER CONFIGURATION ..............................30
FIGURE 15：MICROPHONE INTERFACE CONFIGURATION.......................................................31
FIGURE 16：EARPHONE INTERFACE CONFIGURATION............................................................ 31
FIGURE 17：REFERENCE CIRCUIT FOR BUZZER........................................................................33
FIGURE 18：SIM INTERFACE REFERENCE CIRCUIT WITH 6PIN SIM CARD.......................... 34
FIGURE 19：SIM INTERFACE REFERENCE CIRCUIT WITH 8PIN SIM CARD.......................... 35
FIGURE 20：AMPHENOL C707 10M006 049 2 SIM CARD HOLDER............................................35
FIGURE 21：MOLEX 91128 SIM CARD HOLDER...........................................................................36
FIGURE 22：SIM300 SERVICES AS RECEIVER..............................................................................38
FIGURE 23：SIM300 SERVICES AS CALLER..................................................................................39
FIGURE 24：REFERENCE CIRCUIT FOR NETWORK STATUS LED............................................39
FIGURE 25：MECHANICAL DIMENSIONS OF SIM300（UNIT: MM） ......................................47
FIGURE 26：ENTERY 1008-G60N-01R BOARD-TO-BOARD CONNECTOR PIN SIDE .............. 48
FIGURE 27：ENTERY BOARD TO BOARD CONNECTOR PHYSICAL PHOTO..........................49
FIGURE 28：MOLEX 53729-0608 BOARD-TO-BOARD CONNECTOR PIN SIDE .......................49
FIGURE 29：MOLEX BOARD TO BOARD CONNECTOR PHYSICAL PHOTO ...........................50
FIGURE 30：MM9329-2700B..............................................................................................................51
FIGURE 31：RF CONNECTOR MXTK..............................................................................................52
