SIM908 GSM GPS Module

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.

General features of SIM908 GSM GPS Module

• Quad-Band 850/900/18001900MHz
• GPRS multi-slot class 10
• GPRS mobile station class B
• Compliant to GSM phase 2/2+

• Control via AT commands (GSM 07.07 ,07.05 and SIMCom enhanced AT Commands)
• SIM application toolkit
• Supply voltage range :

• Low power consumption
• Dimensions : 30*30*3.2mm
• Weight : 5.2g
• Operation temperature : -40 °C to +85 °C

Specifications for SMS via GSM / GPRS

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

Specifications for audio

• Tricodec

• 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 : <2.5m CEP

• Power consumption (GSM engine in idle mode)

- Acquisition 77mA
- Tracking 76mA

Interfaces

• 80-pad with SMT type
• Interface 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