Telegesis, available from GLYN High-Tech Distribution , launches its 3rd generation of advanced ZigBee modules and the first module family on the market to feature the EM357 and EM351- the latest ARM® Cortex M-3 SOC's from Ember.
ETRX3 series modules have a footprint of a small 19mm x 25mm for both standard and PA/LNA versions which is a 40% reduction in size compared to the ETRX2 module. They are available with either an on board antennae or a Hirose U.FL connector, enabling connection of external antennae.
The ETRX3 series are low power 2.4GHz ZigBee modules integrating a 2.4 GHz, IEEE 802.15.4 compliant transceiver with up to 192k of flash, 12k of RAM, as well as advanced peripherals.
The EM357 and EM351 utilise an efficient architecture and the integrated receive channel filtering allows for robust co-existence with other communication standards in the 2.4 GHz spectrum, such as Bluetooth.
The ARM® Cortex M3 microprocessor is optimised for high performance, low power consumption, and efficient memory utilisation making it suitable for use in ZigBee applications. To maintain the strict timing requirements imposed by the ZigBee standards, the EM357and EM351 integrate a number of MAC functions into the hardware handling automatic ACK transmission and reception, automatic backoff delay, and clear channel assessment for transmission, as well as automatic filtering of received packets.
ETRX3 series modules work from a 2.1v to 3.6v supply and active power consumption is reduced by over 20% compared to the ETRX2. In deep sleep mode, consumption is reduced to 800nA and further reduced to 400na if the self wakeup feature is not enabled.
ETRX3 series modules features all the advanced software already present on other Telegesis ZigBee modules such as the Telegesis AT command set which allows the designer to use the functionality of the EmberZNet stack without the need for complex embedded code. Development is also made easier by the addition of an integrated JTAG and debugging interface.
The ETRX3 series is designed to be easily integrated into designs without the need for RF or embedded expertise.