Descripción
Módulo GSM/GPRS basado en el SIM900. Diseñado para una amplia variedad de aplicaciones M2M e IoT, por ejemplo envíar mensajes de texto SMS, realizar llamadas, conectarse a un Servidor Web mediante HTTP, conectarse a un FTP, enviar correos electrónicos, entre otros.
Incluye:
- Circuito integrado MCP73838 cargador de bateria Li-Ion/Li-Polymer. La carga se realiza proporcionando un voltaje de 5V en el conector header de la placa.
- Antena GSM/GRPS
Funciona con tarjetas SIM 4G de Movistar, Iusacell y AT&T. No es compatible con tarjetas SIM 4G de Telcel. Es compatibles con tarjetas SIM Telcel anteriores grandes (2.5 x 1.5 cms) v5.0. No se ha probado con tarjetas SIM de otras compañías.
Especificaciones del SIM900:
- 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 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 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
- analog audio interface
- RTC backup
- SPI interface (option)
- Serial interface
- Antenna pad
- I2C
- GPIO
- PWM
- ADC
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