FEATURES
  Very low power, high performance, low IF transceiver
  Fully integrated io-homecontrol compliant protocol covering
     Layer 1, Layer 2, and time critical elements of Layer 3
     Media access
     Master, slave, and beacon modes supported
     Automatic io-homecontrol channel scan
     Automatic CRC, preamble, start byte insertion/check
     UART data encoding as per io-homecontrol
     Smart preamble detect/packet sniffing
     Automatic address filtering
     Low power modes
  Autonomous packet handling without intervention of host
     microprocessor thus significantly increasing battery life
  1-way and 2-way communication supported
  Automatic wake-up timer
  32-bit hardware timer, 16-bit firmware timer (48 bits total)
  Uses either
     External 32 kHz crystal
     Internal 32 kHz RC oscillator
  Patented fast settling automatic frequency control (AFC)
  Fully integrated image rejection calibration (patent pending)
  Digital RSSI
  Operating frequencies
     Channel 1: 868.25 MHz
     Channel 2: 868.95 MHz
     Channel 3: 869.85 MHz
  Very low power consumption
     12.8 mA in receive mode with AGC active
     11.9 mA in receive mode with manual AGC, ADC off
     24.1 mA in transmit mode (10 dBm output)
     0.75 μA in RCO wake mode
     1.25 μA in XTO wake mode (32 kHz oscillator active)
     38.4 μA average current in low power mode
  Receiver sensitivity (10−3 BER)
     −108.5 dBm at 38.4 kbps FSK, 20 kHz deviation
  Output power programmable up to 13.5 dBm
  Automatic PA ramping
  Dual PAs offer Tx antenna diversity
  Very few external components
     Integrated PLL loop filter
     Integrated Rx/Tx switch
     Integrated battery monitor
     On-chip 8-bit ADC and temperature sensor
  Efficient and flexible SPI control interface
     4 lines available for low cost microcontroller interface
     Flexible Tx and Rx data buffers
     Efficient burst mode register access
  1.8 V to 3.6 V power supply
  5 mm × 5 mm, 32-lead LFCSP package
 
APPLICATIONS
  Home automation
  Process and building control