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  • RF-AL42UHB2

    The RF-AL42UHB2 is a general LoRa Wireless Communication Module, with integrated LoRa Radio Transceiver, LoRa Modem and an 8-Bit CISC MCU. The MCU uses an advanced STM 8-bit core, with 16 MHz operation frequency. The LoRa Radio Transceiver has continuous frequency coverage from 410 MHz to 525 MHz.

    • Chip: ASR6505 (STM8L152 + SX1262)
    • Protocols: LoRa
    • TX Power: +22 dBm
    • Distance: 7 Km
    Product Description

     

    RF-star ASR6505 433MHz  LoraWAN LinkWAN UART Lora module

     

    The RF-AL42UHB2 is a general LoRa Wireless Communication Module, with integrated LoRa Radio Transceiver, LoRa Modem and an 8-Bit CISC MCU. The MCU uses an advanced STM 8-bit core, with 16 MHz operation frequency. The LoRa Radio Transceiver has continuous frequency coverage from 410 MHz to 525 MHz. The LoRa Modem supports LoRa modulation for LPWAN use cases and (G)FSK modulation for legacy use cases. The LoRa Wireless Communication module designed by ASR6505 provides ultra-long range and ultra-low power communication for LPWAN application.

    The RF-AL42UHB2 can achieve a high sensitivity of over -140 dBm and the maximum transmit power is higher than +22 dBm. This makes it suitable to be used in long range LPWAN and have high efficiency. The total chip package is of very small size, with totally of 48 pins.

     Parameters of RF-AL42UHB2

    Chipset

    ASR6505 (STM8L152 + SX1262)

    Supply Power Voltage

    1.8 V ~ 3.6 V, recommended to 3.3 V

    Frequency

    410 MHz ~ 525 MHz

    Maximum Transmit Power

    +22 dBm

    Receiving Sensitivity (125 kHz Bandwidth, SF = 12, rate = 0.3 Kbps)

    -140 dBm

    GPIO

    40

    Crystal

    32 MHz, 32.768 KHz

    SRAM

    4 KB

    Flash

    64 KB

    EEPROM

    2 KB

    Package

    SMT Packaging

    Interface

    UART, I2C, SPI, SD, ADC

    Dimension

    18.3 mm x 18.3 mm

    Type of Antenna

    Half hole Interface

    Operating Temperature

    -40 +85

    Storage Temperature

    -55 +125

    Operating Humidity

    5 ~ 95% (Non-Condensing)

    Storage Humidity

    10 ~ 95% (Non-Condensing)

    Power Consumption

    Sleep mode: 2 μA (@ without RF Config Retention, without RTC)

    TX Current: 50 mA (@ 17 dBm)

    TX Current: 40 mA (@ 14 dBm)

    RX Current: 10 mA



    433Mhz transceiver moduleASR6505 receiver433MHz transmitter

     


     

     
    LoRa Application

    3km lora module 

      

    Recommended Footprint

    Pin Attributes

    Pin Diagram of RF-AL42UHB2

    Pin NO.

    Pin Name

    P/G/I/O

    Description

    1

    LCD_SEG2 / GPIO

    I/O

    LCD Segment pin 2

    2

    UART_RX / GPIO

    I

    UART RX pin, wake up UART

    3

    UART_TX / GPIO

    O

    UART TX pin, wake up UART.

    4

    LCD_SEG3 / GPIO

    I/O

    LCD Segment pin 3

    5

    LCD_COM3 / GPIO

    I/O

    LCD Common pin 3

    6

    LCD_SEG4 / GPIO

    I/O

    LCD Segment pin 4

    7

    LCD_SEG5 / GPIO

    I/O

    LCD Segment pin 5

    8

    UART0_RX / GPIO

    I

    UART0 RX pin, wake up UART

    9

    UART0_TX / GPIO

    O

    UART0 TX pin, wake up UART

    10

    LCD_SEG6 / GPIO

    I/O

    LCD Segment pin 6

    11

    LCD_SEG7 / GPIO

    I/O

    LCD Segment pin 7

    12

    LCD_SEG8 / GPIO

    I/O

    LCD Segment pin 8

    13

    LCD_SEG9 / GPIO

    I/O

    LCD Segment pin 9

    14

    SPI-1-_MISO / GPIO

    O

    SPI slave output, can be external SPI

    15

    SPI-1-_MOSI / GPIO

    I

    SPI slave input, can be external SPI

    16

    SPI-1-_SCK / GPIO

    I

    SPI clock, can be external SPI

    17

    SPI-1-_NSS / GPIO

    O

    SPI slave select, can be external SPI

    18

    LCD_SEG10 / GPIO

    I/O

    LCD Segment pin 10

    19

    LCD_SEG11 / GPIO

    I/O

    LCD Segment pin 11

    20

    LCD_SEG12 / GPIO

    I/O

    LCD Segment pin 12

    21

    LCD_SEG13 / GPIO

    I/O

    LCD Segment pin 13

    22

    LCD_SEG14 / GPIO

    I/O

    LCD Segment pin 14

    23

    LCD_SEG15 / GPIO

    I/O

    LCD Segment pin 15

    24

    LCD_SEG16 / GPIO

    I/O

    LCD Segment pin 16

    25

    GPIO0

    I/O

    MCU GPIO

    26

    LCD_SEG17 / GPIO

    I/O

    LCD Segment pin 17

    27

    I2C_SDA / GPIO

    I/O

    I2C SDA pin

    28

    I2C_SCL / GPIO

    O

    I2C SCL pin

    29

    ADC_IN0 / GPIO

    I

    ADC input pin0

    30

    ADC_IN1 / GPIO

    I

    ADC input pin1

    31

    GPIO2

    I

    MCU GPIO

    32

    ADC_IN2 / GPIO

    I/O

    ADC input pin2

    33

    GPIO3

    I/O

    MCU GPIO

    34

    GPIO4

    I/O

    MCU GPIO

    35

    GND

    G

    Ground

    36

    VDD

    P

    Supply for the LoRa Radio (1.8 V ~ 3.6 V)

    37

    GND

    G

    Ground

    38

    RF_OUT

    O

    RF transmitter output

    39

    GND

    G

    Ground

    40

    DIO3

    I/O

    Multipurpose digital I/O-external TCXO32M supply voltage

    41

    SWIM

    I/O

    SWIM download pin

    42

    NRST

    I/O

    External reset pin

    43

    LCD_COM0 / GPIO

    I/O

    LCD Common pin 0

    44

    LCD_COM1 / GPIO

    I/O

    LCD Common pin 1

    45

    LCD_COM2 / GPIO

    I/O

    LCD Common pin 2

    46

    V_LCD

    I

    VLCD voltage input

    47

    LCD_SEG0 / GPIO

    I/O

    LCD Segment pin 0

    48

    LCD_SEG1 / GPIO

    I/O

    LCD Segment pin 1

     


    Tags: ASR6505 LoRa
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