Preliminary Datasheet Helium Atom Helium Systems INC., IEEE 802.15.4 Module OVERVIEW The Atom is a dual band FCC, ETSI and IC certiefi d channels and +14 dBm in the 2.4GHz band offering IEEE 802.15.4 module. It operates in the 2.4GHz and 15 channels for North America. The Atom-EU is ETSI 915MHz bands in North America and 2.4GHz and certiefi d for TX power up to +8 dbm in the 868Mhz 868Mhz bands in Europe. The module is also capa- band offering 8 channels and +7 dBm in the 2.4Ghz ble of supporting China frequencies. band offering 15 channels for Europe. The module is designed to provide wireless con- The RF sections (IEEE802.15.4 transceivers) of the nectivity to the Helium network infrastructure via module are powered by Atmels integrated Cor- modular certicfi ation into an end customers applica - tex-M0+ ATSAMR21G18A (which integrates an tion. This allows for ease of integration for connect- AT86RF233 die), AT86RF212B and SkyWorks FEMs ing devices to the internet. It is perfect as a drop- (PA/LNAs). This combination of radios, microcon- in module to add certiefi d wireless capability to an troller and FEMs marries the best of the available end product or as a stand-alone wireless device. The technologies to derive the best RF performance, module contains one chip antenna for each oper- power, current consumption and cost into a 20x20 ational band within its allowed region. Those chip mm agency-certiefi d module. antennas for 868MHz/915MHz bands have a gain of -1.0dBi and the chip antenna for 2.4GHz has a gain The module comes with pre-programmed firmware, of -0.5dBi. The Atom also supports U.FL connec- allowing easy setup and deployment on the Helium tors for external antenna connections for use with wireless network. User interface is via standard UART any choice of antenna provided their performanc- interface, with a well-defined and simple API. es dont exceed the certiefi d dipole 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 sensitivity in the 2.405GHz-2.480GHz band using O-QPSK at 250kbps. The Atom-AM is FCC/IC certiefi d for TX power up to +25dBm in the 915MHz band offering 10 Helium Systems Inc. USA 2015 01/2015 1Features Certifications Modular certification ETSI (this is a different 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 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