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SIM908

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
•Quad-Band 850/900/18001900MHz
•GPRS multi-slot class 10
•GPRS mobile station class B
•Compliant to GSM phase 2/2+
- Class 4 (2 W @ 850/900 MHz)
- Class 1 (1 W @ 1800/1900MHz)
•Control via AT commands (GSM 07.07 ,07.05 and SIMCom enhanced AT Commands)
•SIM application toolkit
•Supply voltage range:
-GPRS: 3.2 ~ 4.8 V
-GPS: 3.0 ~ 4.5V
•Low power consumption
•Dimensions: 30*30*3.2mm
•Weight:
- SIM908:5.2g
- SIM908-C:11.1g
•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
- 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 : <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