关键特性：
Ultra-low-power STM32L0 Series MCU
157 dB maximum link budget
+20 dBm, 100 mW constant RF output versus Vsupply
+14 dBm high efficiency PA
Programmable bit rate up to 300 kbps
High sensitivity: down to -137 dBm
Bullet-proof front end: IIP3 = -12.5 dBm
89 dB blocking immunity
Low RX current of 10 mA, 200 nA register retention
Fully integrated synthesizer with a resolution of 61 Hz
FSK, GFSK, MSK, GMSK, LoRa™ and OOK modulations
Built-in bit synchronizer for clock recovery
Sync word recognition
Preamble detection
127 dB+ dynamic range RSSI
Built-in temperature sensor and low battery indicator 1.65 V to 3.6 V power supply
