ZigBee

ZigBee is a specification for a suite of high level communication protocols used to create personal area networks built from small, low-power digital radios. ZigBee is based on an IEEE 802.15 standard. ...

ZigBee is a specification for a suite of high level communication protocols used to create personal area networks built from small, low-power digital radios. ZigBee is based on an IEEE 802.15 standard. Though low-powered, ZigBee devices often transmit data over longer distances by passing data through intermediate devices to reach more distant ones, creating a mesh network; i.e., a network with no centralized control or high-power transmitter/receiver able to reach all of the networked devices. The decentralized nature of such wireless ad hoc networks make them suitable for applications where a central node can't be relied upon.
ZigBee is used in applications that require a low data rate, long battery life, and secure networking. ZigBee has a defined rate of 250 Kbit/s, best suited for periodic or intermittent data or a single signal transmission from a sensor or input device. Applications include wireless light switches, electrical meters with in-home-displays, traffic management systems, and other consumer and industrial equipment that requires short-range wireless transfer of data at relatively low rates. The technology defined by the ZigBee specification is intended to be simpler and less expensive than other WPANs, such as Bluetooth or Wi-Fi.
ZigBee networks are secured by 128 bit symmetric encryption keys. In home automation applications, transmission distances range from 10 to 100 meters line-of-sight, depending on power output and environmental characteristics.

ZigBee MicroControl

The ZigBee MicroControl is a tabletop or wall mount unit used to display status for and control ZigBee devices. It features a timed Energy Saving Mode that allows you to put connected ZigBee devices into energy savings at the touch of a button.
The display on the MicroControl allows you to easily set up, install, and control the wireless ZigBee system. The environmentally-friendly internal backup battery in the MicroControl provides approximately 4 hours of active use power and up to 24 hours of power in sleep mode

Features

  • MRF24J40 + PIC18F26K20 with open source MiWi and Zigbee stack
  • PIR sensor motion detector, sends wireless alarm to Zigbee nodes when motion is detected
  • RF Transceiver – MRF24J40 IEEE 802.15.4™ Standard compliant 2.4 GHz RF transceiver
  • UEXT connector to all boards with UEXT
  • mini ICSP connector
  • On-board antenna
  • On-board temperature sensor – TCN75A
  • Option for external power supply through EXT_PWR
  • EXT/BAT switch
  • Reset circuit
  • two user buttons
  • two status LEDs
  • RST button
  • 2x1,5V AA battery holders
  • PCB: FR-4, 1.00 mm (0,039"), solder mask, silkscreen component print
  • Dimensions: 93 mm x 32 mm (3.66’’x 1.2’’)

High-Performance RISC CPU

  • C Compiler Optimized Architecture:
  • Optional extended instruction set designed to optimize re-entrant code
  • 1024 bytes Data EEPROM
  • 64 Kbytes Linear Program Memory Addressing
  • 3936 bytes Linear Data Memory Addressing
  • 16 MIPS Operation
  • 16-bit Wide Instructions, 8-bit Wide Data Path
  • Priority Levels for Interrupts
  • 31-Level, Software Accessible Hardware Stack
  • 8 x 8 Single-Cycle Hardware Multiplier

Flexible Oscillator Structure

  • Precision 16 MHz Internal Oscillator Block:
  • Factory calibrated to ± 1%
  • Software selectable frequencies range of 31 kHz to 16 MHz
  • 64 MHz performance available using PLL – no external components required
  • Four Crystal modes up to 64 MHz
  • Two External Clock modes up to 64 MHz
  • 4X Phase Lock Loop (PLL)
  • Secondary Oscillator using Timer1 @ 32 kHz
  • Fail-Safe Clock Monitor:
  • Allows for safe shutdown if peripheral clock stops
  • Two-Speed Oscillator Start-up

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