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