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