Ebyte E32-915T30S User Manual

E32-915T30S User Manual

SX1276 915MHz 1W SMD Wireless Module

Chengdu Ebyte Electronic Technology Co,;Ltd E32-915T30S user manual

CONTENT

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

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

1.2 FEAT URES ......................................................................................................................................................................................... 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 ....................................................................................................................... 7

5 FUNCTION DESCRIPTION .......................................................................................................... 7

5.1 FIXED TRANSMISSION..................................................................................................................................................................... 7

5.2 BROADCASTING TRANSMISSION ................................................................................................................................................... 8

5.6.1 Indication of UART output ................................................................................................................................................... 9

5.6.2 Indication of wireless transmitting ..................................................................................................................................... 9

5.6.3 Configuration procedure of module..................................................................................................................................10

5.6.4 Notes for AUX.......................................................................................................................................................................10

6 OPERATING MODE ..................................................................................................................... 11

6.1 MODE SWITCH ............................................................................................................................................................................... 11

6.2 NORMAL MODE (MODE 0) ............................................................................................................................................................ 12

6.3 WAKE-UP MODE (MODE 1)........................................................................................................................................................... 12

6.4 POWER-SAVING MODE (MODE 2)................................................................................................................................................. 12

6.5 SLEEP MODE (MODE 3) ................................................................................................................................................................. 13

7 COMMAND FORMAT .................................................................................................................. 13

7.1 DEFAULT PARAMETERS................................................................................................................................................................. 13

7.2 READING OP ERATING PARAMETERS............................................................................................................................................ 14

7.3 READING VERSION NUMBER ........................................................................................................................................................ 14

7.4 RESET COMMAND.......................................................................................................................................................................... 14

7.5 PARAMETER SETTING COMMAND ............................................................................................................................................... 14

8. HARDWARE DESIGN ................................................................................................................. 16

9 FAQ .................................................................................................................................................. 17

9.1 COMMUNICATION RANGE IS TOO SHORT .................................................................................................................................... 17

9.2 MODULE IS EASY TO DAMAGE..................................................................................................................................................... 18

9.3 BER(BIT ERROR RAT E) IS HIGH ............................................................................................................................................... 18

10 PRODUCTION GUIDANCE ...................................................................................................... 18

10.1 REFLOW SOLDERING TEMPERATURE ........................................................................................................................................ 18

10.2 REFLOW SOLDERING CURVE...................................................................................................................................................... 19

11 E32 SERIES................................................................................................................................... 19

Chengdu Ebyte Electronic Technology Co,;Ltd E32-915T30S user manual

12 ANTENNA RECOMMENDATION ........................................................................................... 20

12.1 ANTENNA CHOOSING .............................................................................................................................................................. 20

13 PACKAGE FOR BATCH ORDER ............................................................................................. 21

REVISION HISTORY....................................................................................................................... 22

ABOUT US ......................................................................................................................................... 22

Chengdu Ebyte Electronic Technology Co,;Ltd E32-915T30S user manual

1. Overview

1.1 Introduction

E32-915T30S is a wireless serial port module

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

multiple trans miss ion modes, working in the

900MHz~931MHz, (default 915MHz), LoRa s pread

spectrum technology, TTL output, compatib le 3.3v~5v

IO.

SX1276 features LoRa™, wh ich will bring longer

communicat ion distance, and has the advantages of concentrated power density, meanwh ile it has a very s trong

confidentiality. the modules of 30dBm transmitting power adopt indus trial grade crys tal oscillators to ens ure the stability

and consis tency, its precision is lower than the widely adopted 10ppm.E32-915T30S is in stable bulk production and are

wide ly applied in utility meters, IoT renovation, smart ho me, etc. The modules feature data encryption and co mpression.

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 be ing

interfered, which increased the reliability and transmitting efficiency.

E32-915T30S s trictly follows des ign standards of FCC, CE, CCC and meets various RF certificat ion requirements

for exporting.

1.2 Features

 Communication distance tested is up to 8km  Maximum transmiss ion power of 1W, software multi-level adjustable；  Support the global license -free ISM 915MHz band；  Support air date rate of 0.3kbps ～19.2kbps；  Support new generation LoRa technology.  Low power consumption for battery supplied applications ；  Support 3.3V~5.2V power supply, power supply over 5.0 V can guarantee the best performance；  Industrial grade standard des ign, s upport -40 ~ 85 °C for working over a long time；  IPEX and stamp hole optional, good for secondary development and integration.

1.3 Application

 Home s ecurity alarm and remote keyless entry；  Smart home and industrial sensors ；  Wireless alarm security system；

Chengdu Ebyte Electronic Technology Co,;Ltd E32-915T30S user manual

 Building automation solutions ；  Wireless indus trial-grade remote control；  Health care products；  Advanced Meter Reading Architecture(AMI)；  Automotive industry applications .

2. Specification and parameter

2.1 Limit parameter

Main parameter

Performance

Remark

Min.

Max.

Power sup p ly（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

≥5.0 V ensures outp ut 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（M Hz ）

900

915

931

Support ISM band

Power

consumption

Transmitting current [mA]

600 - Instant power consumption

Receiving current [mA]

Turn-off current [μA]

- 5 -

Software is shut down

Max Tx power（dBm）

29.5 - 30.5

Receiving sensitivity （dBm）

-145

-147

-148

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

8000m

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

TX length

58 Byte

Maximum capacity of single package

Chengdu Ebyte Electronic Technology Co,;Ltd E32-915T30S user manual

Buffer

512 Byte

Modulation

LoRa™

Communication interface

TTL

@3.3V

Package

SMT

Connector

2.54mm

Size

25 * 40.5 mm

Antenna

IPEX/stamp hole

50 ohm impedance

3 Size and pin definition

No.

Name

Direction

Function

Input

（weak pull-up）

With M1, the four working modes of the module can be

determined (it cannot be suspended, and it can be grounded if it is not us ed).

Chengdu Ebyte Electronic Technology Co,;Ltd E32-915T30S user manual

Input

（weak pull-up）

With M0, the four working modes of the module can be

determined (it cannot be suspended, and it can be grounded if it is not us ed).

RXD

Input

TTL UART input , Connect to external TXD output pins; Can be

configured as drain open circuit or pull up input, see parameter Settings

TXD

Output

TTL UART output, Connect to external RXD input pin; Can be

configured as drain open circuit or push - pull output, see parameter Settings

AUX

Output

Used to indicate the working status of the module; T he user wakes up the external M CU and outputs low level during self-test initialization; Can be configured as drain op en output, or p ush-p ull outp ut, see parameter Settings (can be suspended)

VCC

Input

Positive reference of module power s upply, voltage range: 2.3v ~

5.2v DC

GND

Input

Ground

RESET

Input

Reset pins for program loading (dangling, no need for user to

connect)

GND

Input

Ground pins for program loading (dangling, no us er connection

required)

SWIM

Input

SWIM pin for program load (dangling, us er does not need to

connect)

+3.3V

Input

Power pins for program loading (suspended, no need for user to

connect)

PB3

Input/output

NC PINE, This pin needs to be dangling and the user does not

need to connect (for later extens ion use)

PB1

Input/output

NC PINE, This pin needs to be dangling and the us er does not

need to connect (for later extens ion use)

PB0

Input/output

NC PINE, This pin needs to be dangling and the user does not

need to connect (for later extens ion use)

GND

ANT

Output

Antenna interface (high frequency signal output,50 ohm

characteristic impedance)

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Ebyte E32-915T30S User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual