User Manual

datasheet
Version 0.9
2017-09-13
deRFsamR21E-23S00/-23S20 datasheet
www.dresden-elektronik.de
Page 6 of 36
1. Overview
The deRFsamR21E series is the second generation of small, ready-to-use radio modules that
provides a fully integrated solution for wireless applications, using the IEEE802.15.4 standard in
the 2.45 GHz ISM frequency band. All required RF components are already integrated on the
module, therefore no expensive RF design is needed. Features can be added by simply connect-
ing sensors and output stages to the module. The deRFsamR21E module series reduces time to
market, effort and cost significantly for wireless applications.
The deRFsamR21E series is based on the SoC ATSAMR21E18 from Microchip/ Atmel which
features an ARM Cortex-M0+ core and a 2.4 GHz ZigBee transceiver. It enables use of ZigBee
3.0 for smart devices in a wide field of applications. For this tiny series, dresden elektronik is us-
ing a footprint, which offers SMD solderable side contacts in a 50 mil / 1.27 mm grid for easy
assembly and inspection. The module offers 256 KB internal flash as program memory as well
as 4 Mbit data flash for firmware updates over the air and data storage.
Two radio module variants are available:
 deRFsamR21E-23S00: integrated RF-design with chip antenna for easy and fast
integration with no need for custom RF design and low BOM cost since all necessary
components are integrated on the module
 deRFsamR21E-23S20: coaxial u.FL-connector for external antenna applications as
well as a RF-pad which enables custom RF-design e.g. use of external frontend with
power amplifier/ low noise amplifier or antenna diversity
Both modules are full compliant to all EU and FCC regulatory requirements.
2. Applications
The main applications for the radio modules are:
 ZigBee 3.0
 Smart Home
 Lighting Application
 Home Automation
 Wireless Sensor Networks
 Industrial Controlling
 Smart Metering
 6LoWPAN