Features

 License-free 868/915 MHz frequency bands

 4 channels in EU frequency band (865.3 to 868.3 MHz)

 10 channels in US frequency band (906 to 924 MHz)

 BPSK or O-QPSK modulation selectable

 BPSK with 20kBps EU and 40kBps US

 ARM® Cortex™-M0+ 32-bit ultra-low-power microcontroller

 192kB flash and 20kB RAM

 6 Kbyte EEPROM

 5 UART interfaces

 1 SPI interface

 3 I2C interfaces

 10 pulse-width-modulation (PWM) outputs

 12-bit ADC with 10 input channels

 2 analog comparators

 31 general purpose I/O (GPIO) pins

 Network Stack

 UDP/IPv6 communication

 Mesh networking with hundreds of nodes

 Self-healing defective routes

 Over-the-Air update (OTAU) capable

 Network layer security

 Ultra-low power Stop Mode: < 1μA with full RAM retention

 Supply voltage: 1.8V to 3.3V

 -40°C to +85°C ambient operating temperature

 15.6 × 12 mm 43-LGA package