SIMCom SIM900D

The SIMCom SIM900D is an ultra-compact quad-band GSM/GPRS wireless module designed for M2M applications. Operating on 850/900/1800/1900MHz frequencies, this SMT-type module measures just 33mm x 33mm x 3mm and weighs 6.2g, making it ideal for slim and compact designs. Built with a powerful ARM926EJ-S single-chip processor, the SIM900D supports GPRS multi-slot class 10/8 with download speeds up to 85.6 kbps.

The module delivers comprehensive connectivity features including voice, SMS, data, and fax capabilities. It supports tricodec and AMR voice codecs with hands-free operation and echo suppression, Group 3 class 1 fax, CSD data up to 14.4 kbps, and both point-to-point and cell broadcast SMS in text and PDU modes. Advanced software features include embedded TCP/UDP protocol, FTP/HTTP support, and 0710 MUX protocol.

Operating on a 3.2-4.8V supply voltage with low power consumption of 1.0mA in sleep mode, the SIM900D functions reliably in temperatures from -40°C to +85°C. The module provides multiple interfaces including external SIM support (3V/1.8V), analog audio, serial interface, GPIO, ADC, PWM, and an optional SPI interface. It features SAIC support for improved signal quality and includes a charge interface for Li battery integration. Control is managed through AT commands (GSM 07.07, 07.05 and SIMCOM enhanced AT commands) with SIM application toolkit support. The module is compatible with SIM340DZ and complies with ROHS and REACH standards.

Download datasheet (PDF format)