SIMCOM SIM928A GSM GPRS+GPS/GNSS Module

SIM928A module is a compact Quad-Band  GSM/GPRS-enable module base on PNX4851 platform which is also equipped with GPS technology for satellite navigation. The complete design in a SMT type makes it easy to integrate GSM/GPRS&GPS as an all-in-one solution.

General features
•Quad-Band GSM 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 (3GPP TS 27.007 and SIMCom enhanced AT Commands)
•SIM application toolkit
•Supply voltage range:
      -GPRS: 3.2 ~ 4.8 V
      -V-GPS: 2.8 ~ 4.3V
      -VCHG: 5V
•Low power consumption
•Dimensions: 30*30*3.0mm
•Weight: 5.3g
•Operation temperature:-40℃ to +85 ℃

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
•PPP-stack
•Integrated TCP/IP stack

Specifications for CSD data
•CSD up to 14.4 kbps
•USSD
•Non transparent mode

Compatibility
•AT cellular command interface

Specification for GPS

•Support EASYTM   self-generated  orbit prediction
•Support EPOTM orbit prediction
•Support SBAS ranging (WAAS, EGNOS, GAGAN, MSAS)
•Support  Jamming Removing
•Integrated Low-noise amplifier
•Receiver type
    33tracking/99 acquisition-channel GPS receiver
•Max. update rate:    10Hz
•Sensitivity    
     Tracking: -167 dBm    
     Reacquisition:      -157 dBm
     Cold starts:          -148 dBm     
•Time-To-First-Fix
      Cold start:          28s           
      Warm start:        26s
       Hot start:           <1s
       EPO Assist:     13s（CTTFF)        
 •Accuracy
       Automatic Position3:     <2.5m CEP
       Speed4: 0.1m/s         

Interfaces
• 80-pad with SMT type
• one Interface for external SIM card  :3V/ 1.8V
•two analog audio interfaces
•SPI interface
•RTC backup
•A serial interface and a debug interface for GSM/GPRS
• two serial interfaces for GPS
charge  input