Chengdu Ebyte Electronic Technology E22400T22S User Manual

E22-400T22S User Manual

SX1268 434MHz SMD Wireless Module

CONTENTS

1. OVERVIEW

1.1 INTRODUCTION

1.2 FEATURES

1.3 APPLICATION

1.4 FUNCTION INTRODUCTION

........................................................................................................................................

...............................................................................................................................................................

........................................................................................................................................................................

...................................................................................................................................................................

...............................................................................................................................................

2. SPECIFICATION AND PARAMETER

2.1 LIMIT PARAMETER

2.2 OPERATING PARAMETER

3 SIZE AND PIN DEFINITION

4. CONNECT TO MCU

5 FUNCTION DESCRIPTION

5.1 FIXED TRANSMISSION

5.2 BROADCASTING TRANSMISSION

5.3 BROADCASTING ADDRESS

5.4 MONITOR ADDRESS

5.5 RESET

5.6 AUX DESCRIPTION

.............................................................................................................................................................................

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

............................................................................................................................................................

...................................................................................................................................................

............................................................................................................

.........................................................................................................................

..............................................................................................................

.......................................................................................................................................................

........................................................................................................................................

.................................................................................................................................................

.........................................................................................................................................................

........................................................................................................................................................

................................................................................................................................

...................................................................................................................

....................................................................................................................................................

..............................................................................................

................................................................................................................

10 10 11 11

6 OPERATING MODE

6.1 MODE SWITCHING

6.2 NORMAL MODE（MODE 0）

6.3 WOR MODE（MODE 1）

6.4 CONFIGURATION MODE（MODE 2）

6.5 DEEP SLEEP MODE（MODE 3）

7 HARDWARE DESIGN

8 FAQ

..................................................................................................................................................

........................................................................................................................

....................................................................................................................

........................................................................................................................................

............................................................................................................................................

.....................................................................................................................

............................................................................................................................

....................................................................................................................................

Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S User manual

8.1 COMMUNICATION RANGE IS TOO SHORT

8.2 MODULE IS EASY TO DAMAGE

8.3 BER(BIT ERROR RATE) IS HIGH

9 PRODUCTION GUIDANCE

9.1 REFLOW SOLDERING TEMPERATURE

9.2 REFLOW SOLDERING CURVE

........................................................................................................................................

.....................................................................................................................................

............................................................................................................

.................................................................................................................................

............................................................................................................................................

10 PACKAGE FOR BATCH ORDER

REVISION HISTORY

ABOUT US

..........................................................................................................................................

..........................................................................................................................

........................................................................................................................

..................................................................................................

Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S User manual

1. Overview

1.1 Introduction

E22-400T22S is a wireless serial port module (UART) based on SEMTECH's SX1268 RF chip. It has multiple

transmission modes, working in the 434MHz, LoRa spread spectrum technology, TTL level output, compatible with

3.3V and 5V IO port voltage.

LoRa direct sequence spread spectrum technology will bring longer communication distance, and has the

advantages of concentrated power density and strong anti-interference ability. The module has a software FEC

forward error correction algorithm, which has high coding efficiency and strong error correction capability. In the

case of sudden interference, it can actively correct the interfered data packets, greatly improving reliability and

transmission distance. When without FEC, such packets can only be discarded.

The module has data encryption. Data transmitted over the air, with randomness, makes data interception

meaningless through strict encryption and decryption algorithms. The module reserves multiple IO interfaces to

provide custom development services.It supports packet length setting and also supports different real-time and

data packets.

1.2 Features

 Communication distance tested is up to 7km；

 Support the global license-free ISM 434MHz band；

 Support air date rate of 0.3kbps～62.5kbps；

 Support new generation LoRa technology based on SX1268；

 Compared with SX1276, the power consumption of hardware is reduced by 40%,and the power consumption

of software is reduced by 35%;

 Compared with the SX1276, for the same power consumption, the transmission power is increased by 80%;

 Low power consumption for battery supplied applications；

 Support 3.3V~5.5V 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；

 IPEX and stamp hole optional, good for secondary development and integration.

Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S User manual

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.

1.4 Function introduction

 LoRa spread spectrum: LoRa direct sequence spread spectrum technology will bring longer communication distance;

low transmit power density, it is not easy to cause interference to other equipment.

 High confidentiality, extremely low probability of interception; strong anti-interference ability, strong suppression of

co-channel interference and various noises; excellent anti-multipath fading performance.

 LBT: The module has a Listen before talk (LBT) function. When this function is enabled, the module actively monitors the

channel environment noise before transmitting. If the noise exceeds the threshold, it will be sent delayed. This feature can

greatly improve the communication success rate of the module in harsh environments. This function can be used for

network transmission and anti-collision processing.

 RSSI: The signal strength indication function. The module supports packet signal strength serial output. Can be used to

assess signal quality, improve communication networks, and ranging. The module supports ambient noise signal strength

serial output. It can be used to implement LBT functions manually.

 Wireless configuration: Remotely configure or read wireless module parameters by sending command packets

wirelessly.

 Ultra-low power consumption: the air wake-up function. It is especially suitable for battery-powered applications: when

the module is in WOR state, the configuration module WOR monitors the overall power consumption of the adjustable

module. The maximum configurable response delay of the module is 4000ms. The average current of the module in this

mode is about 2uA.

 Broadcast monitoring: Set the module address to 0xFFFF, which can monitor the data transmission of the module on the

same channel; the transmitted data can be received by the module of any address on the same channel, thus playing the

role of broadcasting and monitoring.

 Forward error correction: The module has FEC forward error correction algorithm, which has high coding efficiency and

strong error correction capability. In the case of sudden interference, it can actively correct the interfered data packets,

greatly improving reliability and transmission distance. When without FEC, such packets can only be discarded.

 Deep sleep function: When the module is in sleep mode, mode 3, the wireless receiver is turned off and the

micro-controller is in a sleep state; at this time, the power consumption of the whole device is about 2uA.

Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S User manual

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

Main parameter

Performance

Remark

Min.

Typ.

Max.

Operating voltage（V）

2.3

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

Operating temperature（℃）

-40-85

Industrial design

Operating frequency（MHz）

434

Support ISM band

Power

consump

tion

TX current（mA）

133

Instant power consumption

RX current（mA）

Sleep current （μA）

469

Software is shut down

Max Tx power（dBm）

-10-

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

7000m

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

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

TX length

240 Btye

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

 Watchdog: The module has a built-in watchdog and performs precise time layout. Once an exception occurs, the

module will restart within 1 second and continue to work according to the previous parameter settings.

 Parameter saving: After the user sets the parameters, the module parameters will be saved, the power will not be lost,

and the module will work according to the set parameters after power-on.

 Applicable environment: 434MHz is free frequency band, users can use it directly without application; 434MHz features

certain penetration and diffraction ability, suitable for environment with small data volume, long transmission distance

and easy to be interfered.

2. Specification and parameter

2.1 Limit parameter

2.2 Operating parameter

+ 13 hidden pages

Chengdu Ebyte Electronic Technology E22400T22S User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1. Overview

1.1 Introduction

1.2 Features

1.3 Application

1.4 Function introduction

2. Specification and parameter

2.1 Limit parameter

2.2 Operating parameter