SIM908

SIM908
GSM/GPRS with GPS, quadband GSM 850/900/1800/1900MHz, SIMcom, RoHS


SIM908 module is a complete Quad-Band GSM/GPRS module which combines GPS technology for satellite navigation. The compact design which integrated GPRS and GPS in a SMT package will significantly save both time and costs for customers to develop GPS enabled applications.

Featuring an industry-standard interface and GPS function, it allows variable assets to be tracked seamlessly at any location and anytime with signal coverage.

Features

• Quad-Band GSM 850/900/1800/1900MHz
• GPRS multi-slot class 10
• GPRS mobile station class B
• Compliant to GSM phase 2/2+
  • Class 4(2W @ GSM850/900MHz)
  • Class 1(1W @ GSM1800/1900MHz)
• Control via AT commands (GSM 07.07 and 07.05 and SIMCom enhanced AT commands)
• SIM application tool kit
• Low power consumption
• Supply voltage range:
  -GPRS: 3.2 ~ 4.8 V
  -GPS: 3.0 ~ 4.5V
• Operation temperature: -40°C to +85°C
• Dimension: 30mm x 30mm x 3.2mm

Specifications for SMS via GSM/GPRS

• Point-to-point MO and MT
• SMS cell broadcast
• Text and PDU mode

Specifications for audio

• Tricodec
  • Half rate (HR)
  • Full rate (FR)
  • Enhanced Full rate (EFR)
• Hands-free operation
• Echo cancellation

Specifications for data transfer

• GPRS class 8/10: max. 85.6 kbps (downlink)
• PBCCH support
• Coding schemes CS 1, 2, 3, 4
• CSD up to 14.4 kbps
• USSD
• Non transparent mode
• PPP-stack
• Integrated TCP/IP stack

Compatibility

• AT cellular command interface

Specification for GPS

• Receiver type
  • 42-channel
  • GPS L1 C/A code
  • High-performance STE engine
• Sensitivity
  • Tracking: -160 dBm
  • Cold starts: -143 dBm
• Time-To-First-Fix
  • Cold starts: 30s (typ.)
  • Hot starts: 1s (typ.)
• Accuracy
  • Horizontal position:
  • Power consumption (GSM engine in idle mode)
    • Acquisition: 77mA
    • Tracking: 76mA
  
  
  

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  Interfaces

  • 80-pad with SMT type
  • nterface to external SIM 3V/ 1.8V
  • Dual analog audio interfaces
  • SPI interface
  • RTC backup
  • Charge interface
  • A serial interface and a debug interface for GSM/GPRS
  • Debug interface for GPS NMEA information output
  • Two separate antenna connectors for GSM/GPRS&GPS
  
  
  

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