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Digi XBee Cellular Versus Rudimentary Cellular Breakout Boards

Symmetry Electronics Team in Blogs on April 17, 2017

About Symmetry Electronics Team

Established in 1998, Symmetry Electronics is a focused global distributor of wireless connectivity solutions, sensors, and audio-video technologies. Offering comprehensive design support and available-to-ship inventory, Symmetry is committed to helping engineers accelerate time to market, reduce costs, and offer modern solutions for their IoT designs. Acquired by the Berkshire Hathaway company TTI, Inc. in 2017, Symmetry Electronics is headquartered in Los Angeles with international offices in Mexico, Canada, and China.

The Digi XBee Cellular represents a quantum leap ahead of the typical breakout boards on the market today in terms of features, functionality, and ease of development. A breakout board “breaks out” the pins of an underlying cellular module onto a printed circuit board giving you access to use the pins, but little or no additional functionality. Some breakout boards include end-device certification, a SIM slot, and a simple power supply and antenna connector. But, the designer is left having to design in an external microcontroller to manage the module, integrate security elements into their design, and other complex development tasks.

Unlike these breakout boards, Digi XBee Cellular hardware is fully integrated with an on-board cellular module, ARM Cortex M3 microcontroller, power regulator, and security chip, all packed into a compact 24.4 x 32.9mm Digi XBee through-hole footprint. This enables a number of useful features on Digi XBee Cellular that are not available on other cellular modules or breakout boards:



Digi XBee software interface
This runs on the on-board micro-controller and provides an abstraction layer for software designers, including a common AT command interface for configuration and control, an API mode for external devices to intelligently communicate with the XBee, and a transparent serial mode for simple ‘transparent’ communications through the UART, over the cellular network, to the destination IP address or phone number.


Future-Proof design
Digi XBee software interface is consistent across all current and future XBees, and they all share the same Digi XBee footprint. This means it will be easy to drop new wireless technologies into your design as they roll out – technologies like LTE-M, NB-IoT or even LoRa.


• Digi’s easy to use (and free) XCTU software
This software enables you to configure, test, and manage your devices with an intuitive user interface.


• Deep Sleep Mode
In this mode, Digi XBee Cellular consumes less than 10uA. This feature can be configured as cyclic sleep, or pin activated sleep. Other breakout boards support ‘low power modes’ that draw significantly more power.


• Trustfence™ Security Features
These include Secure Boot, SSL/TLS 1.2, Encrypted Storage, and Protected JTAG interface.


• NEW! On-board programmability via MicroPython
Developers will have their own application sandbox directly on the Digi XBee Cellular modem. This enables on-board intelligence for simple sensor/actuator applications, using the digital and analog I/O.


When considering embedded cellular connectivity, it is important consider all of the additional components and work involved in using a breakout board. If time to market and ease of use are vital to your project check out the Digi XBee Cellular development kit which includes a Digi XBee end-device certified modem, a development board, a pre-activated SIM with a live data plan and 6 months of free data service, and the antennas and accessories needed to get cellular up and running in a matter of minutes.

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Symmetry Electronics Team in Blogs on April 17, 2017

About Symmetry Electronics Team

Established in 1998, Symmetry Electronics is a focused global distributor of wireless connectivity solutions, sensors, and audio-video technologies. Offering comprehensive design support and available-to-ship inventory, Symmetry is committed to helping engineers accelerate time to market, reduce costs, and offer modern solutions for their IoT designs. Acquired by the Berkshire Hathaway company TTI, Inc. in 2017, Symmetry Electronics is headquartered in Los Angeles with international offices in Mexico, Canada, and China.

Why partner with Symmetry Electronics? Symmetry's technical staff is specially trained by our suppliers to provide a comprehensive level of technical support. Our in-house Applications Engineers provide free design services to help customers early in the design cycle, providing solutions to save them time, money and frustration. Contact Symmetry for more information.

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