| Type RF Family/Standard Protocol Modulation Frequency Data Rate (Max) Power - Output Sensitivity Memory Size Serial Interfaces GPIO Voltage - Supply Current - Receiving | TxRx + MCU 802.15.4, Bluetooth 6LoWPAN, Bluetooth v4.1 Low Energy, Zigbee® - 2.4GHz 1Mbps 5dBm -97dBm 128kB Flash, 28kB SRAM I²C, I²S, SPI, UART 31 1.8 V ~ 3.8 V 5.9mA 9.1mA |