the rf-al42uh module is a uart developed based on asr6501 chip of asr company. it adopts standard lora wan protocol and supports the development of standard gateway communication. 3.3v ttl level output. working frequency band 433mhz. compared with the traditional rf technology, lora spread spectrum technology has the characteristics of centralized power density, strong anti-interference ability.

  • transmit power: 22 dbm
  • support agreement: lorawan
  • communication distance: 7 km
  • core programme: asr6501
  • core strengths: support lorawan protocol,support aliyun linkwan protocol
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 48 pins.

 

parameters of rf-al42uhb2

chipset

asr6505

supply power voltage

2.8 v ~ 3.8 v, recommended to 3.3 v

frequency

410 mhz ~ 525 mhz

maximum transmit power

max.: 22 dbm

receiving sensitivity (125 khz bandwidth, sf = 12, rate = 0.3 kbps)

-140 dbm

gpio

30

crystal

32 mhz

sram

4 kb

flash

64 kb

eeprom

2 kb

package

smt packaging

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)

rx current

9 ma

tx current ( 5 dbm)

47.0 ma

sleep mode (without rf config retention, without rtc)

1 μa

 

pin diagram of rf-al42uhb2

pin no.

pin name

p/g/i/o

description

1

lcd_seg2

i/o

lcd segment pin 2

2

uart_rx

i/o

uart rx pin, wake up uart

3

uart_tx

i/o

uart tx pin, wake up uart.

4

lcd_seg3

i/o

lcd segment pin 3

5

lcd_com3

i/o

lcd common pin 3

6

lcd_seg4

i/o

lcd segment pin 4

7

lcd_seg5

i/o

lcd segment pin 5

8

uart0_rx

i

uart0 rx pin, wake up uart

9

uart0_tx

o

uart0 tx pin, wake up uart

10

lcd_seg6

i/o

lcd segment pin 6

11

lcd_seg7

i/o

lcd segment pin 7

12

lcd_seg8

i/o

lcd segment pin 8

13

lcd_seg9

i/o

lcd segment pin 9

14

spi­1­_miso

i

spi slave output, can be external spi

15

spi­1­_mosi

o

spi slave input, can be external spi

16

spi­1­_sck

i

spi clock, can be external spi

17

spi­1­_nss

o

spi slave select, can be external spi

18

lcd_seg10

i/o

lcd segment pin 10

19

lcd_seg11

i/o

lcd segment pin 11

20

lcd_seg12

i/o

lcd segment pin 12

21

lcd_seg13

i/o

lcd segment pin 13

22

lcd_seg14

i/o

lcd segment pin 14

23

lcd_seg15

i/o

lcd segment pin 15

24

lcd_seg16

i/o

lcd segment pin 16

25

gpio0

i/o

mcu gpio

26

lcd_seg17

i/o

lcd segment pin 17

27

i2c_sda

i/o

i2c sda pin

28

i2c_scl

o

i2c scl pin

29

adc_in0

i

adc input pin0

30

adc_in1

i

adc input pin1

31

adc_in2

i

adc input pin2

32

gpio2

i/o

mcu gpio

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 ~ 3.7 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

i/o

lcd common pin 0

44

lcd_com1

i/o

lcd common pin 1

45

lcd_com2

i/o

lcd common pin 2

46

v_lcd

i

vlcd voltage input

47

lcd_seg0

i/o

lcd segment pin 0

48

lcd_seg1

i/o

lcd segment pin 1

 

 
lora application

 

our company

 

packaging & shipping

 

faq

 

contact us

 

recommended footprint图片关键词

pin attributes

图片关键词


pin no.

pin name

p/g/i/o

description

1

lcd_seg2

i/o

lcd segment pin 2

2

uart_rx

i/o

uart rx pin, wake up uart

3

uart_tx

i/o

uart tx pin, wake up uart.

4

lcd_seg3

i/o

lcd segment pin 3

5

lcd_com3

i/o

lcd common pin 3

6

lcd_seg4

i/o

lcd segment pin 4

7

lcd_seg5

i/o

lcd segment pin 5

8

uart0_rx

i

uart0 rx pin, wake up uart

9

uart0_tx

o

uart0 tx pin, wake up uart

10

lcd_seg6

i/o

lcd segment pin 6

11

lcd_seg7

i/o

lcd segment pin 7

12

lcd_seg8

i/o

lcd segment pin 8

13

lcd_seg9

i/o

lcd segment pin 9

14

spi­1­_miso

i

spi slave output, can be external spi

15

spi­1­_mosi

o

spi slave input, can be external spi

16

spi­1­_sck

i

spi clock, can be external spi

17

spi­1­_nss

o

spi slave select, can be external spi

18

lcd_seg10

i/o

lcd segment pin 10

19

lcd_seg11

i/o

lcd segment pin 11

20

lcd_seg12

i/o

lcd segment pin 12

21

lcd_seg13

i/o

lcd segment pin 13

22

lcd_seg14

i/o

lcd segment pin 14

23

lcd_seg15

i/o

lcd segment pin 15

24

lcd_seg16

i/o

lcd segment pin 16

25

gpio0

i/o

mcu gpio

26

lcd_seg17

i/o

lcd segment pin 17

27

i2c_sda

i/o

i2c sda pin

28

i2c_scl

o

i2c scl pin

29

adc_in0

i

adc input pin0

30

adc_in1

i

adc input pin1

31

adc_in2

i

adc input pin2

32

gpio2

i/o

mcu gpio

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 ~ 3.7 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

i/o

lcd common pin 0

44

lcd_com1

i/o

lcd common pin 1

45

lcd_com2

i/o

lcd common pin 2

46

v_lcd

i

vlcd voltage input

47

lcd_seg0

i/o

lcd segment pin 0

48

lcd_seg1

i/o

lcd segment pin 1


hardware datasheet