OVERVIEW
The MRF24J40 is an IEEE 802.15.4-2003 compliant transceiver supporting MiWi™, ZigBee™ and other proprietary protocols. The MRF24J40 integrates wireless RF, PHY layer baseband and MAC layer architectures that can be combined with a simple microprocessor to apply low data rate to a multitude of applications that include home automation, consumer electronics, PC peripherals, toys, industrial automation and more. The MRF24J40 device integrates a receiver, transmitter, VCO and PLL into a single integrated circuit. It uses advanced radio architecture to minimize external part count and power consumption.

FEATUREs:
• Complete IEEE 802.15.4 Specification Compliant
• Supports MiWi™, ZigBee™ and Proprietary Protocols
• Simple, 4-Wire SPI Interface
• Integrated 20 MHz and 32.768 kHz Oscillator Drive
• 20 MHz Reference Clock Output: - Available to drive microcontroller oscillator
• Supports Power-Saving mode
• Low-Current Consumption, Typical 18 mA in RX mode and 22 mA in TX mode
• Typical 2 μA Sleep mode
• Small, 40-Pin Leadless QFN 6x6 mm2 Package

RF/Analog Features:
• ISM Band 2.405-2.48 GHz Operation
• -91 dBm Typical Sensitivity and +5 dBm Maximum Input Level
• +0 dBm Typical Output Power and 38.75 dB TX Power Control Range
• Differential RF Input/Output and Integrated TX/RX Switch
• Integrated Low Phase Noise VCO, Frequency Synthesizer and PLL Loop Filter
• Digital VCO and Filter Calibration
• Integrated RSSI ADC and I/Q DACs
• Integrated LDO
• High Receiver and RSSI Dynamic Range

MAC/Baseband Features:
• Hardware CSMA-CA Mechanism, Automatic ACK Response and FCS Check
• Independent Beacon, Transmit and GTS FIFO
• Hardware Security Engine (AES-128) with CTR, CCM and CBC-MAC modes
• Supports all CCA modes and RSS/LQI
• Automatic Packet Retransmit Capability
• Supports In-Line or Stand-Alone modes for both Encryption and Decryption