LoRa Node 151

  • Mã sản phẩm: LoRa Node 151
  • Nhà sản xuất: Heltec
  • Website hỗ trợ: https://www.proe.vn
590.000₫
  • CE Certificate;
  • Microprocessor: STM32L151CCU6(ARM® Cortex®-M3 32-bit RISC core,support DFU mode) , with LoRa® node chip SX1276/SX1278;
  • Onboard user resources available: 256 Kbytes of Flash memory with ECC; 32 Kbytes of RAM; 8 Kbytes of true EEPROM with ECC; 128-byte backup register.
  • Micro USB interface with a complete voltage regulator, ESD protection, short circuit protection, and other protection measures;
  • 1/2 AA battery shell, use 1/2 AA Lithium chlorine sulfite battery (this battery can’t charge, but onboard USB / battery power automatic switching allows connect USB when the battery is assembled);
  • Reserve SMA antenna interface for LoRa use
  • Download the firmware via DFU or ST-LINK;
  • Provide complete LoRaWAN(ClassA/C) source code(support ABP and OTAA);
  • With good RF circuit design and basic low-power design (sleep current: 1.8uA), it is convenient for IoT application vendors to quickly verify solutions and deploy applications;

Technical Parameters

source

parameter

MCU

STM32L151CCU6(Ultra-low-power 32-bit MCU ARM®-based Cortex®-M3)

LoRa chip

SX1276/SX1278

LoRa bands

EU_433, CN_470_510, EU_863_870, US_902_928 four bands optional

LoRa maximum output power

18dB ± 2dB

Hardware Resource

USART x 3; SPI x 2; I2C x 2; I2S x 2; USB 2.0 x 1

12 – bits ADC; 12 – bits DAC

DMA controller  
38 general GPIO  

Flash

256KB FLASH;32KB SRAM;8KB EEPROM;128B BACKUP REGISTER

Interface

Micro USB x 1; LoRa antenna(SMA) x 1

Size

56.6 x 24 x 20 mm

battery type

1/2 AA Lithium chlorine sulfite battery

Battery detection circuit

External device power control(Vext)

Low power design

Deep Sleep: 2.5uA

Electrical characteristics

 

Electrical characteristics

condition

Minimum

Typical

Maximum

Power Supply

USB powered(≥500mA)

4.7V

5V

6V 

Lithium powered(≥250mA)

3.3V

3.6V

4.2V

3.3V(pin)powered(≥150mA)

2.7V

3.3V

3.5V

 
5V(pin)powered(≥500mA)

4.7V

5V

6V

 

Power consumption(mA)

LoRa 10dB emission

 

50mA

 

LoRa 12dB emission

 

60mA

 

LoRa 15dB emission

  110mA    
LoRa 20dB emission   130mA    

Output

3.3V pin output

   

500mA

5V pin output (USB powered only)

 

Equal to input current

 
External device power control (Vext 3.3V)     350mA  

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