供应 无线数*输模块 SIM900/SIM900A

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SIM900/SIM900A是一款贴片式GPRS模块

General features
* Quad-Band 850/ 900/ 1800/ 1900 MHz
* GPRS multi-slot cl* 10/8
* GPRS mobile station cl* B
* Compliant to GSM phase 2/2+
  – Cl* 4 (2 W @850/ 900 MHz)
  – Cl* 1 (1 W @ 1800/1900MHz)
* Dimensions: 24*24*3mm
* Weight: 3.4g
* Control via AT commands (GSM 07.07 ,07.05 and  
  SIMCOM enhanced AT Commands)
* SIM application toolkit

* Supply voltage range : 3.1 ... 4.8V
* Low power consumption: 1.5mA(sleep mode)
* Operation temperature: -40°C to +85 °C
 
Specifications for Fax
* Group 3, cl* 1
 
Specifications for Data
* GPRS cl* 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
 
Specifications for SMS via GSM/GPRS
* Point to point MO and MT
* SMS cell broadcast
* Text and PDU mode
 
Software features
* 0710 MUX protocol
* embedded TCP/UDP protocol
* FTP/HTTP( available at late July ,2010)
* FOTA ( available at July ,2010)
* MMS (available at July ,2010)
* Embedded AT (available at Q3,2010)
 
Specifications for Voice
* Tricodec
  – Half rate (HR)
  – Full rate (FR)
  – Enhanced Full rate (EFR)
* Hands-free operation
  (Echo suppression)
* AMR
  – Half rate (HR)
  – Full rate (FR)
 
Interfaces
* Interface to external SIM 3V/ 1.8V
* *og audio interface
* RTC backup
* SPI interface (option)
* Serial interface
* Antenna pad
* I2C
* GPIO
* PWM
* ADC