减贫战略的单元SIM900B

Note: SIM300 module connector should be changed to SIM900 module connector. See the difference as inbelow photos shown. SIM900B and SIM300 SIMCOM presents a compact and reliable wireless module-SIM900B which is compatible with the module-SIM300/340 and SIM340E. This is a complete Quad-band GSM/GPRS module in a B2B 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 SIM900B delivers GSM/GPRS 850/900/1800/1900MHz performance for voice, SMS, Data, and Fax in a small form factor and with low power consumption. SIM900B can fit almost all requirements in your M2M applications. 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: 40mm x 33mm x 3mm * Weight: 7g * Control via AT commands (GSM 07.07 ,07.05 and SIMCOM enhanced AT Commands) * SIM application toolkit * Supply voltage range :3.2 ... 4.8V * Low power consumption: 1.5mA(sleep mode) * Operation temperature: -40 °C to +85 °C Specifications for Fax * Group 3, class 1 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 Software features * 0710 MUX protocol * embedded TCP/UDP protocol * FTP/HTTP( available at July ,2010) Enhanced version add following features * 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 * 60 PIN Board-to-board connector * Interface to external SIM 3V/ 1.8V * Two analog audio interface * RTC backup * SPI interface * Serial interface * Embedded SIM (option ) * Embedded SIM Holder (option ) * Keypad * GPIO * PWM * ADC * Antenna connector Compatibility AT cellular command interface Approvals(on going) * CE * FCC * ROHS * PTCRB * GCF * IC * ICASA * TA