The SIM900 is a Quad-band GSM/GPRS module in a SMT type and designed with a very powerful single-chip processor integrating AMR926EJ-S core, allowing you to benefit from small dimensions and cost-effective solutions. Featuring an industry-standard interface, the SIM900 delivers GSM/GPRS 850/900/1800/1900MHz performance for voice, SMS, Data, and Fax in a small form factor and with low power consumption. With a tiny configuration of 24mm x 24mm x 3 mm, SIM900 can fit almost all the space requirements in your M2M applications, especially for slim and compact demands of design.
SIM900 Wireless GSM/GPRS Module 
DataSheet (2.17 MB)
 General features
- Quad-Band 850/ 900/ 1800/ 1900 MHz
- GPRS multi-slot class 10/8
- GPRS mobile station class B
- Compliant to GSM phase 2/2+: – Class 4 (2 W @850/ 900 MHz) – Class 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, class 1
- Compatibility - AT cellular command interface
- Certificates: CE, FCC, ROHS, PTCRB, GCF, IC, ICASA, TA, REACH, AT&T
Specifications for Data
- GPRS class 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
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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)
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)
Interfaces
- Interface to external SIM 3V/ 1.8V
- analog audio interface
- RTC backup
- SPI interface (option)
- Serial interface
- Antenna pad
- I2C
- GPIO
- PWM
- ADC
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