Features
■ Frequency bands: 150-174 MHz, 300-348 MHz, 387-470 MHz, 779-956 MHz
■ Modulation schemes: 2-FSK, GFSK, MSK, GMSK, OOK, and ASK
■ Air data rate from 1 to 500 kbps
■ Very low power consumption (21 mA TX at +11 dBm)
■ Programmable channel spacing (12.5 kHz min.)
■ Programmable output power up to +16 dBm
■ Fast startup and frequency synthesizer settling time (6 µs)
■ Integrated temperature sensor
■ Battery indicator and low battery detector
■ TX FIFO buffer (96 bytes each)
■ Configurability via SPI interface
■ AES 128-bit encryption co-processor
■ Fully integrated ultra low power RC oscillator
■ Wakeup on internal timer and on external event
■ Flexible packet length with dynamic payload length
■ Automatic CRC handling
■ FEC with interleaving
■ Whitening of data
■ Wireless M-BUS, EN 300 220, FCC CFR47 15 (15.205, 15.209, 15.231, 15.247, 15.249), and ARIB STD T-67, T93, T-108 compliant
■ QFN20 4x4 mm RoHS package
■ Operating temperature range from -40 °C to 85 °C

Applications
■ AMR (automatic meter reading)
■ Home and building automation
■ WSN (wireless sensors network)
■ Industrial monitoring and control
■ Wireless fire and security alarm systems
■ Point-to-point wireless link QFN20