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User Manual
Version 01.00
2011-07-25
Radio modules deRFarm7
1. Overview
The compact designed radio modules contains a powerful ARM7 microcontroller with 512
kBytes High-Speed Flash, On-chip USB 2.0 Full Speed Transceiver, Ethernet MAC 10/100
base-T in RMII-Mode and an onboard transceiver for 2.4 GHz or 868/915 MHz.
The 46 pin interface gives access to most hardware functions of the microcontroller.
A long radio transmission range can be achieved by using the coaxial jack (U.FL) version
with an external antenna attached. In the Sub-GHz band several hundred meters (100 m =
330 feet) can be reached without problems. The 2.4 GHz version is able to cover up to
200 m (650 feet) with a ceramic chip antenna. All versions have a 128-bit AES encryption
unit installed.
The 512 kB Flash and 128 kB RAM of the deRFarm7 modules provide enough resources to
be used for any tasks within a wireless sensor network.
2. Application
The main applications for the deRFarm7 radio modules are:
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2.4GHz IEEE 802.15.4
868MHz / 915MHz IEEE 802.15.4
ZigBee ? Pro
ZigBee ? RF4CE
ZigBee ? IP
6LoWPAN
Wireless Sensor Networks (WSN)
industrial and home controlling and monitoring
Gateway applications between IEEE 802.15.4 and other networks, e.g. Ethernet
dresden elektronik
ingenieurtechnik gmbh
Enno-Heidebroek-Str. 12
01237 Dresden / Germany
Tel.: +49 351 – 31 85 00
Fax: +49 351 – 3 18 50 10
wireless@dresden-elektronik.de
www.dresden-elektronik.de
Page 5 of 35
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