www.dragino.com
LSN50 LoRa Sensor Node User Manual
5
/
60
1.2
Specifications
Micro Controller:
●
STM32L072CZT6 MCU
●
MCU: STM32L072CZT6
●
Flash: 192KB
●
RAM: 20KB
●
EEPROM: 6KB
●
Clock Speed: 32Mhz
Common DC Characteristics:
●
Supply Voltage: 2.1v ~ 3.6v
●
Operating Temperature: -40 ~ 85°C
●
I/O pins: Refer to STM32L072 datasheet
LoRa Spec:
●
Frequency Range,
○
Band 1 (HF): 862 ~ 1020 Mhz
or
○
Band 2 (LF): 410 ~ 528 Mhz
●
168 dB maximum link budget.
●
+20 dBm - 100 mW constant RF output vs.
●
+14 dBm high efficiency PA.
●
Programmable bit rate up to 300 kbps.
●
High sensitivity: down to -148 dBm.
●
Bullet-proof front end: IIP3 = -12.5 dBm.
●
Excellent blocking immunity.
●
Low RX current of 10.3 mA, 200 nA register retention.
●
Fully integrated synthesizer with a resolution of 61 Hz.
●
FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
●
Built-in bit synchronizer for clock recovery.
●
Preamble detection.
●
127 dB Dynamic Range RSSI.
●
Automatic RF Sense and CAD with ultra-fast AFC.
●
Packet engine up to 256 bytes with CRC.
●
LoRaWAN 1.0.2 Specification
Battery:
●
Li/SOCI2 un-chargeable battery
●
Capacity: 4000mAh
●
Self Discharge: <1% / Year @ 25°C
●
Max continuously current: 130mA
●
Max boost current: 2A, 1 second
Power Consumption
●
STOP Mode: 2.7uA @ 3.3v
●
LoRa Transmit Mode: 125mA @ 20dBm 44mA @ 14dBm