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Contents 1 Ember 1.1 Hardware Specifications 1.2 EM250 1.3 EM260 1.4 Application 1.5 Power 1.6 Software 1.7 Additional Information 1.8 Papers 1.9 References 1.10 Navigation

Ember

Ember Corporation has developed the EmberNet embedded networking software and development tools ^[1]. EmberNet is a low frequency self-organizing, self-healing wireless embedded networking platform supporting the forthcoming ZigBee network standard. It produces networks that are reliable, flexible, secure, and easy to use. EmberNet contains support for mesh-, star-, and hybrid-networks. It can be used to monitor, manage and secure everything from bridges to office buildings to truckloads of frozen fish.

Hardware Specifications

Ember's Semiconductor products enable developers to choose between the EM250, a highly-integrated and cost-optimized System-on-Chip, and the EM260, a ZigBee? network co-processor that can be paired with almost any microcontroller. The EM2xx family minimizes external components and provides multiple RF connection options for easy use with or without external PAs.

EM250

Sensing:	None
I/O:	Seventeen GPIO pins with alternate functions Two Serial Controllers with DMA SC1: I2C master, SPI master + UART SC2: I2C master, SPI master/slave
Radios:	Integrated 2.4Ghz, IEEE 802.15.4 compliant transceiver: Robust RX Filtering which allows co-existance with IEEE 802.11g and Bluetooth devices -99dBm RX sensitivity (1% PER, 20byte packet) +3dBm nominal output power Increased radio performance mode (boost mode) gives 100dBm sensitivity and +5dBm transmit power Integrated VCO and loop filter Integrated IEEE 802.15.4 PHY and lower MAC with DMA
CPU:	16-bit XAP2b microprocessor
Storage:	Integrated memory: 128kB of Flash 5kB of SRAM Configurable memory protection scheme

EM260

Sensing:	None
I/O:	Seventeen GPIO pins with alternate functions Two Serial Controllers with DMA SC1: I2C master, SPI master + UART SC2: I2C master, SPI master/slave
Radios:	Integrated 2.4Ghz, IEEE 802.15.4-compliant transceiver: Robust RX Filtering which allows co-existance with IEEE 802.11g and Bluetooth devices -99dBm RX sensitivity (1% PER, 20byte packet) +3dBm nominal output power Increased radio performance mode (boost mode) gives - 100dBm sensitivity and +5dBm transmit power Integrated VCO and loop filter Secondary TX-only RF port for applications requiring external PA Integrated IEEE 802.15.4 PHY and lower MAC
CPU:	User Defined
Storage:	Dependant on CPU choice

Application

• Industrial Automation
• Advanced Metering Infrastructure
• Integrated Home Automation

Power

The EM250/260's low operating and sleep currents may provide up to years of battery life depending on the application. EmberZNet PRO 3.1 networking provides ease of incorporating short activity cycles. The integrated voltage regulator supports a wide range of operating voltages that allows hardware to be optimized for use with lithium-ion or alkaline batteries, without additional circuitry.

Software

• EmberZNet PRO is a complete ZigBee protocol software package containing all the elements required for robust and reliable mesh networking applications on Ember’s silicon platforms.

Additional Information

• Official Ember Website
• Design of an IEEE 802.15.4-Compliant, EmberNet™-Ready or EmberZNet™-Ready Communication Module Using the EM2420 Radio Frequency Transceiver

Papers

• N. Aakvaag, M. Mathiesen, and G. Thonet, “Timing and power issues in wireless sensor networks - an industrial test case”, in Proc. ICPPW, 2005, pp. 419–426.
• Egan, D. (2005), “The Emergence of ZigBee in Building Automation and Industrial Control,” IEEE Computing & Control Engineering Journal, Vol. 16, No. 2, April/May 2005, pp. 14-19.

References

1. ↑ http://www.bb-elec.com/press_releases/images/ember/110-0019-002_rgb72.jpg

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