PRELIMINARY DATASHEET
Helium Atom
HELIUM SYSTEMS INC., IEEE 802.15.4 MODULE
OVERVIEW
The Atom is a dual band FCC, ETSI and IC certified channels for North America. The Atom-EU is ETSI cer-
IEEE 802.15.4 module. It operates in the 2.4GHz and tified for TX power up to +8 dbm in the 868Mhz band
915MHz bands in North America and 2.4GHz and oeff ring 8 channels and +7 dBm in the 2.4Ghz band of -
868Mhz bands in Europe.. The module is also capable fering 15 channels for Europe.
of supporting China frequencies.
The RF sections (IEEE802.15.4 transceivers) of the
The module is designed to provide wireless connectiv- module are powered by Atmels integrated Cor-
ity to the Helium network infrastructure via modular tex-M0+ ATSAMR21G18A (which integrates an
certicfi ation into an end customers application. This AT86RF233 die), AT86RF212B and SkyWorks FEMs
allows for ease of integration for connecting devices (PA/LNAs). This combination of radios, microcontrol-
to the internet. It is perfect as a drop-in module to add ler and FEMs marries the best of the available tech-
certified wireless capability to an end product or as a nologies to derive the best RF performance, power,
stand-alone wireless device. The module contains one current consumption and cost into a 20x20 mm agen-
chip antenna for each operational band within its al- cy-certified module.
lowed region. Those chip antennas for 868MHz/915M-
Hz bands have a gain of -1.0dBi and the chip anten- The module comes with pre-programmed firmware,
na for 2.4GHz has a gain of -0.5dBi. The Atom also allowing easy setup and deployment on the Helium
supports U.FL connectors for external antenna con- wireless network. User interface is via standard UART,
nections for use with any choice of antenna provided SPI or I2C interfaces, with a well-denfi ed and simple
their performances dont exceed the certified dipole API.
antenna gains of 3dBi (868MHz/915MHz) and 2.3dBi
(2.4GHz). The system exhibits -110 dBm sensitivity in
the 863MHz-870MHz and 902Mhz-928MHz bands
using BPSK modulation at 40kbps and -104 dBm sensi-
tivity in the 2.405GHz-2.480GHz band using O-QPSK
at 250kbps. The Atom-AM is FCC/IC certified for TX
power up to +25dBm in the 915MHz band oeff ring 10
channels and +14 dBm in the 2.4GHz band oeff ring 15
Helium Systems Inc. USA 2015 01/2015 1Features
CERTIFICATIONS
Modular certification
ETSI (this is a dieff rent part number from the FCC/IC version)
FCC (Modular certification)
IC (Modular certification)
CE / RoHS compliant
OPERATIONAL BANDS
2.4 GHz IEEE802.15.4 (all regions)
915MHz IEEE802.15.4 (North America version)
868MHz IEEE802.15.4 (European version)
780MHz IEEE802.15.4 (China WPAN version)
TX POWER
ETSI
o TX Power 2.4GHz +10 dBm
o TX Power 868 MHz +13.9 dBm
FCC/IC
o TX Power 2.4GHz +14 dBm
o TX Power 915MHz +27 dBm
RX SENSITIVITY
-104 dBm, 2.4GHz band
-110 dBm, 868/915MHz bands
CURRENT CONSUMPTION
RX current
o 39 mA, both radios active
o 24 mA, 2.4GHz Band only
o 23 mA, sub-GHz Band only
TX current
o 85 mA @ +10 dBm (2.4GHz, ETSI)
o 155 mA @ +13.9 dBm (868MHz, ETSI)
o 100 mA @ +14 dBm (2.4GHz, FCC/IC)
o 380 mA @ +27 dBm (915MHz, FCC/IC)
VOLTAGE RANGE
2.0 to 3.6 V (3.3V typical; 2.4V recommended minimum for full TX power at 915MHz)
TEMPERATURE RANGE
-40 to +85C
INTERFACES
UART / SPI / I2C command interface
SWD (Serial Wire Debug) for loading user-defined firmware
One 12-bit ADC channel
Up to 13 digital GPIO
Helium Systems Inc. USA 2015 01/2015 2