/**
 * @defgroup    boards_deRFmega128 deRFmega128 modules from Dresden Elektronik
 * @ingroup     boards
 * @brief       Support for deRFmega128 modules produced by Dresden Elektronik

# Overview
deRFmega128 is a family of modules produced by Dresden Elektronik.
deRFmega128 modules are based on [ATmega128rfa1](http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-8266-MCU_Wireless-ATmega128RFA1_Datasheet.pdf),
MCUs. It include 16MHz main and 32K RTC crystalls and (depending on module type) integrated or not integrated 2.4GHz antenna.

These modules are available in different variants:
- [deRFmega128-22M00](https://www.dresden-elektronik.de/produkt/24-ghz-avr-derfmega128-22m00.html)
  with integrated antenna,
- [deRFmega128-22M10](https://www.dresden-elektronik.de/produkt/24-ghz-avr-derfmega128-22m10.html)
  without integrated antenna.
- [deRFmega128-22A00](https://www.dresden-elektronik.de/produkt/24-ghz-avr-derfmega128-22a00.html)
  with connectors and integrated antenna,
- [deRFmega128-22A02](https://www.dresden-elektronik.de/produkt/24-ghz-avr-derfmega128-22a02.html)
  with connectors, but without integrated antenna.
- [deRFmega128-22C00](https://www.dresden-elektronik.de/produkt/24-ghz-avr-derfmega128-22c00.html)
  solderable with integrated antenna,
- [deRFmega128-22C02](https://www.dresden-elektronik.de/produkt/24-ghz-avr-derfmega128-22c02.html)
  solderable without integrated antenna.

# Hardware

For details see the according data sheets:
- [deRFmega128-22M00 and deRFmega128-22M10](https://www.dresden-elektronik.de/files/dresden-elektronik/content/downloads/datenblaetter/_outdated/deRFmega128-22M00-22M10-DBT-de.pdf)
- [deRFmega128-22A00 and deRFmega128-22C00](https://www.dresden-elektronik.de/files/dresden-elektronik/content/downloads/datenblaetter/_outdated/deRFmega128-22A00-C00-DBT-de.pdf)
- [deRFmega128-22A02 and deRFmega128-22C02](https://www.dresden-elektronik.de/files/dresden-elektronik/content/downloads/datenblaetter/_outdated/deRFmega128-22A02-C02-DBT-de.pdf)
 */