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TI samples SoC location engine for ZigBee apps

Posted: 15 Jun 2007 ?? ?Print Version ?Bookmark and Share

Keywords:ZigBee? SoC? wireless networking?

Texas Instruments Inc. has begun sampling an SoC with a hardware location engine targeting low-power ZigBee/IEEE 802.15.4 wireless sensor networking applications.

The CC2431 targets applications such as asset and equipment tracking, inventory control, patient monitoring, remote controls, security and commissioning networks. The device is supported by TI's Z-Stack protocol stack.

The CC2431 is from the company's Chipcon product line, and based on its SoC for low-power RF applications, the CC2430. Both devices combine the performance of the CC2420 RF transceiver core with an enhanced 8051 microcontroller, up to 128Kbytes flash memory, 8Kbytes of RAM and many additional featuresall in a small 7-by-7mm package.

The CC2431's RSSI-based location engine accurately calculates the node's position based on the receive signal strength from CC2430-based reference nodes with known locations and can then send the location information to a collector (e.g., computer, PDA, handset). This capability reduces network traffic and communication delays compared to centralized location systems. In typical applications, accuracy of up to five meters can be achieved.

Volume production is scheduled for Q3 2007, with pricing at $6.45 in 1,000-piece quantities.

- Ismini Scouras

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