Ebyte E22-400T30D Manuale utente

E22-400T30D User Manual

SX1268 433/470MHz 1W LoRa Module

CONTENTS

1. OVERVIEW.................................................................................................................................. 4

1.1 INTRODUCTION..............................................................................................................................................................4

1.2 FEATURES................................................................................................................................................................... 4

1.3 APPLICATION.................................................................................................................................................................5

2. SPECIFICATION AND PARAMETER.....................................................................................5

2.1 LIMIT PARAMETER........................................................................................................................................................ 5

2.2 OPERATING PARAMETER............................................................................................................................................... 5

3 SIZE AND PIN DEFINITION........................................................................................................ 7

4. CONNECT TO MCU...................................................................................................................... 8

5 FUNCTION DESCRIPTION.......................................................................................................... 9

5.1 FIXED TRANSMISSION....................................................................................................................................................9

5.2 BROADCASTING TRANSMISSION.................................................................................................................................... 9

5.3 BROADCASTING ADDRESS.............................................................................................................................................9

5.4 MONITOR ADDRESS.....................................................................................................................................................10

5.5 RESET......................................................................................................................................................................... 10

5.6 AUX DESCRIPTION..................................................................................................................................................... 10

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

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

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

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

Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T30D User Manual

6 OPERATING MODE.................................................................................................................... 12

6.1 MODE SWITCHING.......................................................................................................................................................12

6.2 NORMAL MODE（MODE 0）......................................................................................................................................13

6.3 WOR MODE（MODE 1）...........................................................................................................................................13

6.4 CONFIGURATION MODE（MODE 2）......................................................................................................................... 13

6.5 DEEP SLEEP MODE（MODE 3）................................................................................................................................. 14

7 REGISTER READ AND WRITE CONTROL............................................................................ 14

7.1 COMMAND FORMAT....................................................................................................................................................14

7.2 REGISTER DESCRIPTION.............................................................................................................................................. 15

7.3 FACTORY DEFAULT PARAMETER................................................................................................................................. 17

8 REPEATER NETWORKING MODE..........................................................................................18

9 CONFIGURATION INSTRUCTIONS ON COMPUTER......................................................... 19

10 HARDWARE DESIGN................................................................................................................20

11 FAQ................................................................................................................................................21

11.1 COMMUNICATION RANGE IS TOO SHORT...................................................................................................................21

11.2 MODULE IS EASY TO DAMAGE.................................................................................................................................. 21

11.3 BER(BIT ERROR RATE)IS HIGH.............................................................................................................................21

12 PRODUCTION GUIDANCE......................................................................................................21

12.1 REFLOW SOLDERING TEMPERATURE.........................................................................................................................21

12.2 REFLOW SOLDERING CURVE..................................................................................................................................... 22

Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T30D User Manual

13 E22 SERIES..................................................................................................................................22

14 ANTENNA RECOMMENDATION........................................................................................ 23

15 PACKAGE FOR BATCH ORDER............................................................................................ 24

ABOUT US.........................................................................................................................................24

Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T30D User Manual

1. Overview

1.1 Introduction

E22-400T30D is new lora module (UART) based on SEMTECH's

SX1268 RF chip. It has multiple transmission modes working at 410.125～

493.125MHz, LoRa spread spectrum technology, TTL level output, compatible with 3.3V and 5V IO port voltage.

Compared with SX1278 , SX1268 solution has a longer transmission distance, faster speed, lower power

consumption, and smaller size. It supports functions such as wake-up in the air, wireless configuration, carrier monitoring,

automatic repeater, and communication key, and packet length setting, customized development services are available.

1.2 Features

Based on SX1268 LoRa technology, it enables longer distance and better anti-interference ability.

Automatic relay networking, multi-stage relay is suitable for ultra-long distance communication, multiple networks

running in the same area are running simultaneously;

Users to set their own communication keys and cannot be read, which greatly improves the confidentiality of user

data;

RSSI for evaluating signal quality, improving communication network, and ranging;

With LBT for monitoring channel environmental noise before sending data, and for improving communication;

Wireless parameter configuration, send command data packets wirelessly, remotely configure or read wireless

module parameters;

Wake-on-air, that is, ultra-low power consumption function, suitable for battery-powered applications;

With fixed-point transmission, broadcast transmission, and channel monitoring;

Global license-free ISM 433MHz and 470Mhz for meter reading；

In deep sleep mode, power consumption is 2uA；

With PA+LNA, communication distance tested is up to 6 km；

The parameters are saved after power-off. After power-on, the module will work according to the set parameters.

High-efficiency watchdog design, once an exception occurs, the module will automatically restart and continue to

work according to the previous parameter settings;

Air date rate of 0.3kbps～62.5kbps;

3.3V~5.5V power supply, power supply over 5.0 V can guarantee the best performance；

Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T30D User Manual

Industrial grade standard design, support -40 ~ 85 °C for working over a long time；

SMA-K interface for 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；

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 supply（V）

5.5

Voltage over 5.5V will cause permanent

damage to module

Blocking power（dBm）

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

5.5

≥5.0 V ensures output power

Communication level（V）

3.3

For 5V TTL, it may be at risk of burning

down

Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T30D User Manual

Operating temperature（℃）

-40

Industrial design

Operating frequency（MHz）

410.125

493.125

Support ISM band

Power

consumpti

TX current（mA）

610

Instant power consumption

RX current（mA）

Sleep current（uA）

Software is shut down

Max Tx power（dBm）

29.5

30.0

30.5

Receiving sensitivity（dBm）

-146

-147

-148

Air data rate is 2.4kbps

Air data rate（bps）

0.3k

2.4k

62.5k

Controlled via user’s programming

Main parameter

Description

Remark

Distance for reference

6km

Test condition：clear and open area, antenna gain: 5dBi，

antenna height: 2.5m，air data rate: 2.4kbps

TX length

240 Byte

Can be configured via command as 32/64/128/240 bytes

per packet to transmit

Buffer

1000 Byte

Modulation

LoRa

Communication interface

UART

Package

DIP

Connector

1*7*2.54mm

Size

24*43mm

Antenna

SMA-K

50 ohm impedance

Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T30D User Manual

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

（weak pull-up）

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

used, could be grounded).

RXD

Input

TTL UART inputs, connects to external (MCU, PC) TXD output pin. Can be

configured as open-drain or pull-up input. Ground

TXD

Output

TTL UART outputs, connects to external RXD (MCU, PC) input pin. Can be

configured as open-drain or push-pull output

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. Can be

configured as push-pull output (can be suspended).

Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T30D User Manual

VCC

Input

Power supply ：3.3~ 5.5V DC

GND

Input

Ground

Fixed hole

4. Connect to MCU

No.

Description（STM8L MCU）

The UART module is TTL level.

For some MCU works at 5VDC, it may need to add 4-10K pull-up resistor for the TXD & AUX pin.

Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T30D User Manual

5 Function description

5.1 Fixed transmission

5.2 Broadcasting transmission

5.3 Broadcasting address

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

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

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