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Chengdu Ebyte Electronic Technology Co,;Ltd                                                                                                                E32-868T20D user manual 

 

Copyright ©2012–2019

Chengdu Ebyte Electronic Technology Co.,Ltd.

     

                                                                                                                               

     

 

 

 

When module is the transmitter (transparent transmission), all modules under channel 0x04 will receive the data, the 
purpose of broadcast is realized. 

 

5.4 Monitor address 

 

For example: Set the address of module A as 0xFFFF or 0x0000, and the channel as 0x04; 

 

When module A is the receiver, it can receive the data sent from all modules under channel 0x04, the purpose of 
monitor is realized. 

 

5.5 Reset 

 

When  the  module  is  powered,  AUX  outputs  low  level  immediately,  conducts  hardware  self-check  and  sets  the 
operating  mode  based  on  user’s  parameters.  During  the  process,  the  AUX  remains  low  level.  After  the  process 
completed,  the  AUX  outputs high level  and  starts  to  work as  per the  operating mode  combined  by  M1  and  M0. 
Therefore, users need to wait the AUX rising edge as the start of module’s normal work. 

 

 

5.6 AUX description 

 

AUX Pin can be used as indication for wireless send & receive buffer and self-check. 

 

It can indicate whether there are data that are not sent yet via wireless way, or whether all wireless data has been 
sent through UART, or whether the module is still in the process of self-check initialization. 

 

5.6.1 Indication of UART output

 

 

To wake up external MCU 

 

 

 

5.6.2 Indication of wireless transmitting 

 

Buffer (empty): the internal 512 bytes data in the buffer are written to the RFIC (Auto sub-packaging). 

 

When AUX=1, the user can input data less than 512 bytes continuously without overflow. Buffer (not empty): when 
AUX=0, the internal 512 bytes data in the buffer have not been written to the RFIC completely. If the user starts to 

Summary of Contents for E32-868T20D

Page 1: ...E32 868T20D User Manual SX1276 868MHz 100mW DIP Wireless Module...

Page 2: ...DESCRIPTION 7 5 1 FIXED TRANSMISSION 7 5 2 BROADCASTING TRANSMISSION 7 5 2 1 Indication of UART output 8 5 2 2 Indication of wireless transmitting 8 5 2 3 Configuration procedure of module 9 5 2 4 Not...

Page 3: ...ngdu Ebyte Electronic Technology Co Ltd 2 9 FAQ 16 9 1 COMMUNICATION RANGE IS TOO SHORT 16 9 2 MODULE IS EASY TO DAMAGE 16 9 3 BER BIT ERROR RATE IS HIGH 17 10 PRODUCTION GUIDANCE 17 11 E32 SERIES 17...

Page 4: ...mitted in air features randomness air Data Rate Default 2 4kps The encryption decryption algorithm makes data interception meaningless And the data compression enables shorter transmitting time and lo...

Page 5: ...ng voltage V 3 3 5 0 5 2 3 3 V ensures output power Communication level V 3 3 For 5V TTL it may be at risk of burning down Operating temperature 40 85 Industrial design Operating frequency MHz 862 868...

Page 6: ...mmunication interface TTL 3 3V Package DIP Connector 2 54mm Size 21 36mm Antenna SMA K 50 ohm impedance 3 Size and pin definition No Name Direction Function 1 M0 Input weak pull up Work with M1 to dec...

Page 7: ...e configured as open drain or push pull output 5 AUX Output To indicate module s working status wakes up the external MCU During the procedure of self check initialization the pin outputs low level Ca...

Page 8: ...r manual Copyright 2012 2019 Chengdu Ebyte Electronic Technology Co Ltd 7 5 Function description 5 1 Fixed transmission 5 2 Broadcasting transmission 5 3 Broadcasting address For example Set the addre...

Page 9: ...ocess completed the AUX outputs high level and starts to work as per the operating mode combined by M1 and M0 Therefore users need to wait the AUX rising edge as the start of module s normal work 5 6...

Page 10: ...tting or exiting sleep mode 5 6 4 Notes for AUX No Description 1 For function 1 function 2 mentioned above the priority should be given to the one with low level output which means if it meets each of...

Page 11: ...ss transmitting it will start to work in new mode after the UART transmitting finished After the module receives the wireless data transmits the data through serial port it will start to work in new m...

Page 12: ...this time it means that the last wireless data package transmission is started which enables the user to input another 512 bytes continuously The data package transmitted from the module working in m...

Page 13: ...s serial port 9600 8N1 to set module working parameters through specific instruction format pls refer to parameters setting for details Notes When the mode changes from stand by mode to others the mod...

Page 14: ...ency is 433MHZ 38 means frequency is 470MHz 45 means frequency is 868MHz 44 means the frequency is 915 MHz 46 means the frequency is 170MHz xx is the version number and yy refers to the other module f...

Page 15: ...ame to 101 1 1 1 19 2k same to 101 General Specifications Except for E32 400T20S 4 CHAN 7 6 5 reserved Write 0 Communication channel 00H 1FH correspond to 410 441MHz 4 0 channel 410M CHAN 1M default 1...

Page 16: ...9600 Air data rate is 2 4k Corresponding hexadecimal 1 A 8 Hardware design It is recommended to use a DC stabilized power supply The power supply ripple factor is as small as possible and the module n...

Page 17: ...ensure that the antenna is exposed preferably vertically upward When the module is mounted inside the case use a good antenna extension cable to extend the antenna to the outside The antenna must not...

Page 18: ...have the chance of damaging it permanently 11 E32 series Model No Core IC Frequency Hz Tx power dBm Distance km Data Rate Package Size mm Interface E32 868T20S SX1276 868M 20 3 0 3k 19 2k SMD 16 26 UA...

Page 19: ...prove the communication system Therefore we recommend some antennas for wireless modules with excellent performance and reasonable price Model No Type Frequency Hz Interfac e Gain dBi Height Cable Fun...

Page 20: ...0S E32 915T20S E32 400T20S huaa 1 30 2018 01 22 Updating E32 868T20D E32 868T30D E32 915T20D E32 915T30D E32 170T30D huaa 1 40 2018 05 24 Updating antenna option huaa 1 50 2018 10 11 Manual dividing h...

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