Specifications

SIM900D.,which is a complete 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.

Top Features 
  - Single-IC: AMR926EJ-S core
  - SMT
  - Quad-Band 2G
  - GPRS Class 10/8
  - SIM application toolkit
  - Embedded TCP/IP    

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: 33* 33 * 3 mm

- Weight: 6.2g

- Control via AT commands (GSM 07.07 ,07.05 and     SIMCOM enhanced AT Commands)

- SIM application toolkit

- Supply voltage range 3.4 ... 4.5 V

- Low power consumption

- Normal operation temperature: -30 °C to +80 °C  

pecifications 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

Drivers

- MUX Driver

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 3.0V/ 1.8V

- analog audio interface

- RTC backup

- SPI interface

- Serial interfaces

- Embedded SIM(option) 

- Antenna pad 

-GPIO

- ADC 

- Charge interface for Li battery  

- PWM

Compatibility

- AT cellular command interface