Ebyte E32-868T20D User Manual

E32-868T20D User Manual

SX1276 868MHz 100mW DIP Wireless Module

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

CONTENT

1. OVERVIEW .......................................................................................................................................... 3

1.1 INTRODUCTION ...................................................................................................................................................................................... 3

1.2 FEATURES ............................................................................................................................................................................................... 3

1.3 APPLICATION .......................................................................................................................................................................................... 3

2.SPECIFICATION AND PARAMETER ............................................................................................ 4

2.1 LIMIT PARAMETER ................................................................................................................................................................................ 4

2.2 OPERATING PARAMETER ...................................................................................................................................................................... 4

3 SIZE AND PIN DEFINITION ............................................................................................................. 5

4 CONNECT TO MCU ............................................................................................................................ 6

5 FUNCTION 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 Notes for AUX

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

6 OPERATING MODE ......................................................................................................................... 10

6.1MODE SWITCH ...................................................................................................................................................................................... 10

6.2NORMAL MODE (MODE 0)................................................................................................................................................................... 11

6.3WAKE-UP MODE (MODE 1) ................................................................................................................................................................. 11

6.4POWER-SAVING MODE (MODE 2)....................................................................................................................................................... 11

6.5SLEEP MODE (MODE 3) ........................................................................................................................................................................ 12

7 COMMAND FORMAT ...................................................................................................................... 12

7.1 DEFAULT PARAMETERS ...................................................................................................................................................................... 12

7.2 READING OPERATING PARAMETERS ................................................................................................................................................ 13

7.3 READING VERSION NUMBER ............................................................................................................................................................. 13

7.4 RESET COMMAND ................................................................................................................................................................................ 13

7.5 PARAMETER SETTING COMMAND .................................................................................................................................................... 13

8. HARDWARE DESIGN ..................................................................................................................... 15

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

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

12 ANTENNA RECOMMENDATION ............................................................................................... 18

13 PACKAGE FOR BATCH ORDER................................................................................................. 18

REVISION HISTORY ........................................................................................................................... 19

ABOUT US............................................................................................................................................... 19

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

1. Overview

1.1 Introduction

E32-868T20D is a wireless serial port module

(UART) based on SEMTECH's SX1276 RF chip. It has

multiple transmission modes, working in the

862MHz~893MHz, (default 868MHz), LoRa spread spectrum technology, TTL output ， compatible with

3.3v~5v IO.

SX1276 features LoRa™,which will bring longer

communication distance, and has the advantages of

concentrated power density, meanwhile it has a very

strong confidentiality. the modules of 20dBm transmitting power adopt industrial grade crystal oscillators to ensure the

stability and consistency, its precision is lower than the widely adopted 10ppm.E32-868T20D is in stable bulk production

and are widely applied in utility meters, IoT renovation, smart home, etc. The modules feature data encryption and

compression. The data transmitted 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 lower

rate of being interfered, which increased the reliability and transmitting efficiency.

E32-868T20D strictly follows design standards of FCC, CE, CCC and meets various RF certification requirements

for exporting.

1.2 Features

 Communication distance tested is up to 3km  Maximum transmission power of 100mW, software multi-level adjustable；  Support the global license-free ISM 868MHz band；  Support air date rate of 0.3kbps～19.2kbps；  Low power consumption for battery supplied applications；  Support 2.3V~5.2V power supply, power supply over 5.0 V can guarantee the best performance；  Industrial grade standard design, support -40 ~ 85 °C for working over a long time；  SMA access point, Easy connection of coaxial cable or external antenna

1.3 Application

 Home security alarm and remote keyless entry；  Smart home and industrial sensors；  Wireless alarm security system；  Building automation solutions；  Wireless industrial-grade remote control；

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

 Health care products；  Advanced Meter Reading Architecture(AMI)；  Automotive industry applications.

2. Specification and parameter

2.1 Limit parameter

Main parameter

Performance

Notes

Min.

Max.

Power supply（V）

5.2

Voltage over 5.2V will cause permanent

damage to module

Blocking power（dBm）

-10

Chances of burn is slim when modules

are used in short distance

Operating temperature（℃）

-40

2.2 Operating parameter

Main parameter

Performance

Remark

Min

Typ.

Max.

Operating 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

893

Support ISM band

Power

consumptio

Transmitting current [mA]

106 Instant power consumption

Receiving current [mA]

Turn-off current [μA]

Software is shut down

Max Tx power（dBm）

19.2 - 20.0

Receiving sensitivity（dBm）

-144

-146

-147

Air data rate is 2.4kbps

Air data rate（bps）

0.3k

2.4k

19.2k

Controlled via user’s programming

Main parameter

Description

Remark

Distance for reference

3000m

Test condition：clear and open area, antenna gain: 5dBi， antenna height: 2.5m，air data rate: 2.4kbps

TX length

58 Byte

Maximum capacity of single package, automatic sub-packing after exceeding

Buffer

512 Byte

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

Modulation

LoRa™

Communication 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

Input

（weak pull-up）

Work with M1 to decide 4 working modes of module (not suspended, if not used, could be grounded).

Input

Work with M0 to decide 4 working modes of module (not suspended, if

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Ebyte E32-868T20D User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual