By : Anand Yadav

What is Zigbee? The CC2520 is Texas Instrument’s second generation ZigBee/IEEE 802.15.4 RF transceiver

for the 2.4 GHz unlicensed ISM band. This chip enables industrial grade applications by offering state-of-the-art noise immunity, excellent link budget, operation up to 125 degrees and low voltage operation

In addition, the CC2520 provides extensive hardware support for frame handling, data buffering, burst transmissions, data encryption, data authentication, clear channel assessment, link quality indication and frame timing information. These features reduce the load on the host controller. In a typical system, the CC2520 will be used together with a microcontroller and a few additional passive components.

IEEE 802.15.4 protocol.

Zigbee Alliances.

Zigbee DescriptionSecond generation 2.4 GHz ZigBee®/IEEE 802.15.4 RF transceiver.

Features : Best-in-class co-existence and selectivity

properties

• Excellent link budget (103dBm)

• Extended temperature range

• AES-128 security module

• CC2420 interface compatiblility mode

• Supports ZigBee-2007 (ZigBee and ZigBee PRO) w/ MSP430

Benefits : Reliable RF link with interference present

• 400m line-of-sight range with the development kit

• Ideal for industrial applications

• No external processor needed for secure

communciation

• Easy upgrade for existing CC2420 customers

Zigbee consists of The development kit contains the following components

• 3 x SmartRF®05EB

• 3 x CC2520EM evaluation modules

• 3 x Antennas

• 2 x CCMSP-EM430F2618

• 1 x MSP-FET430UIF debug interface

• 3 x USB cables

• Documents

Block diagram of Zigbee

Working of zigbeeZigBee™ – Mesh Network Devices

ZigBee Coordinator

Starts the Network

Routes packets

Manages security

Associates Routers and End Devices

Example: Heating Central

ZigBee Router

Routes packets

Associates Routers and End Devices

Example: Light

ZigBee End Device

Sleeps most of the time

Can be battery powered

Does not route

Example: Light switch

Applications of Zigbee • IEEE 802.15.4 systems

• ZigBee® systems

• Industrial monitoring and control

• Home and building automation

• Automatic Meter Reading

• Low-power wireless sensor networks

• Set-top boxes and remote controls

• Consumer electronics