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Chengdu Ebyte Electronic Technology Co.,Ltd.                                                                                                                                      E28-2G4M27S User Manua

Copyright ©2012–2019

Chengdu Ebyte Electronic Technology Co.,Ltd.

 

                                                                                                                                               

             

           

   

 

CONTENTS 

1. Product Overview

 ....................................................................................................................................................................................... 2

 

1.1 Brief Introduction

 ............................................................................................................................................................................ 2

 

1.2

 

Feature

 .............................................................................................................................................................................................. 2

 

1.3 Application

 ........................................................................................................................................................................................ 2

 

2. Technical Parameters

 ................................................................................................................................................................................. 3

 

2.1 Limit parameter

 ............................................................................................................................................................................... 3

 

2.2 Operating parameter

 ....................................................................................................................................................................... 3

 

3 Dimension and Pin Definition

 .................................................................................................................................................................. 4

 

4 Basic Operation

 ............................................................................................................................................................................................ 5

 

4.1 Hardware design

 .............................................................................................................................................................................. 5

 

4.2 Software editing

 ............................................................................................................................................................................... 6

 

5 Basic Application

 ......................................................................................................................................................................................... 6

 

5.1    Circuit Diagram

 ............................................................................................................................................................................ 6

 

6. FAQ

 ................................................................................................................................................................................................................ 7

 

6.1 Communication range is too short

 .............................................................................................................................................. 7

 

6.2 Module is easy to damage

 ............................................................................................................................................................. 7

 

6.3 Bit error rate is too high

 ................................................................................................................................................................. 7

 

7. Production Guidance

 .................................................................................................................................................................................. 8

 

7.1 Reflow Soldering Temperature

 .................................................................................................................................................... 8

 

7.2 Reflow Soldering Curve

 ................................................................................................................................................................ 8

 

8 E28 Series

 ...................................................................................................................................................................................................... 9

 

9 Antenna Guidance

 ........................................................................................................................................................................................ 9

 

9.2 Antenna selection

 ............................................................................................................................................................................ 9

 

Revision history

 ............................................................................................................................................................................................. 10

 

About us

 ........................................................................................................................................................................................................... 10

 

 
 
 
 

 
 

Содержание E28-2G4M27S

Страница 1: ...E28 2G4M27S User Manual SX1280 2 4GHz 27dBm SPI High Speed LoRa Module...

Страница 2: ...r 3 2 2 Operating parameter 3 3 Dimension and Pin Definition 4 4 Basic Operation 5 4 1 Hardware design 5 4 2 Software editing 6 5 Basic Application 6 5 1 Circuit Diagram 6 6 FAQ 7 6 1 Communication ra...

Страница 3: ...ng wearable electronics smart bracelet and health management etc E28 2G4M27S is a hardware platform without firmware so users need to conduct secondary development 1 2 Feature Communication distance t...

Страница 4: ...y MHz 2400 2450 2500 ISM band Power consumption Transmitting current mA 580 Instant power consumption Receiving current mA 14 5 Turn off current A 2 0 Software is shut down Transmitting power dBm 26 2...

Страница 5: ...eceiving pin 5 SCK_RTSN Input SPI clock input pin can be used as UART request transmitting pin 6 NSS_CTS Input Module chip selection pin used to start a SPI communication and can be used as UART clear...

Страница 6: ...the copper is spread on the Top Layer of the module contact part well grounded it must be close to the digital part of the module and routed in the Bottom Layer Assuming the module is soldered or pla...

Страница 7: ...r it can be disconnected The SPI query mode can be used to obtain the interrupt status but it is recommended to use the external interrupt via connecting MCU After the SX1280 restores the IDLE mode or...

Страница 8: ...to antenna quality or poor matching between antenna and module 6 2 Module is easy to damage Please check the power supply and ensure it is within the recommended range Voltage higher than the peak wil...

Страница 9: ...6 5 Ag3 Cu0 5 Preheat Temperature min Tsmin 100 150 Preheat temperature max Tsmax 150 200 Preheat Time Tsmin to Tsmax ts 60 120 sec 60 120 sec Average ramp up rate Tsmax to Tp 3 second max 3 second ma...

Страница 10: ...a great impact on the communication system Therefore we recommend some antennas that support our wireless modules and have excellent performance and reasonable price Model Type Frequency Gain Size Fe...

Страница 11: ...ion history Version Date Description Operator 1 0 2019 02 28 Initial Version Ray 1 1 2019 04 04 Content Update Ray About us Website www ebyte com Sales info cdebyte com Support support cdebyte com Tel...

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