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GPRS GSM Module A9 Core Board Pudding Development board SMS Voice Wireless Data Transmission IOT


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                  1. The A9 development board is a multi-function development board based on the Axin A9G GPRS/GSM module, which can be used to verify the basic communication functions and peripheral functions of the A9 module.
                  2. A9 development board has basic telephone/sms, GPRS network communication.
                  3. A9 development board contains lithium battery charge management, microphone, speaker interface, USB communication interface, multiple user buttons / led, TF card slot, acceleration sensor, SPI interface, I2C2 interface, ADC interface.
                  4. Pudding series development board camera expansion board, can be connected to 30W/200W camera.
                  5. A9 development board slot machine expansion board, can be connected to a traditional coin machine.
                   * Chip size: 19.2*18.8*2.7mm (±0.2mm)
                   * Working temperature -30 ° C +80 ° C;
                   * Working voltage is 3.5V-4.2V, 4V power supply is recommended;
                   * Boot voltage > 3.5V;
                   * Low power average current is below 2ma;
                   * Support GSM/GPRS four frequency bands, including 850, 900, 1800, 1900MHZ;
                   * GPRS Class 10;
                   * Sensitivity <-105;
                   * Support voice calls;
                   * Support SMS SMS;
                   * GPIO level is 2.8V;
                   * Support GPRS data service, maximum data rate, download 85.6Kbps, upload 42.8Kbps;
                   * Support standard GSM07.07, 07.05 AT commands and Ai-Thinker extension commands;
                   * A9 supports 3 serial ports, one download serial port and one AT command port;
                   * AT command supports standard AT and TCP/IP command ports;
                   * Support digital audio and analog audio, support HR, FR, EFR, AMR voice coding

                  Package Included:

                  1 x A9 Core Board Pudding Development board 


                  A9 development board schematic:a9-dev_v1.2.pdf

                  A9 development board principle

                  For other basic information, please refer to the WIKI/GPRS page.:

                  CSDK_Github open source information

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