Ebyte E22-900T22S1C Manuale utente

E22-900T22S1C User Manual

SX1262 868M/915M 160mW SMD Wireless Module

CONTENTS

DISCLAIMER......................................................................................................................................3

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

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

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

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

1.4 FUNCTION INTRODUCTION...............................................................................................................................................5

2. SPECIFICATION AND PARAMETER.............................................................................................. 6

2.1 LIMIT PARAMETER............................................................................................................................................................ 6

2.2 OPERATING PARAMETER...................................................................................................................................................6

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

4. CONNECT TO MCU.........................................................................................................................9

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

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

5.2 BROADCASTING TRANSMISSION......................................................................................................................................10

5.3 BROADCASTING ADDRESS.............................................................................................................................................. 10

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

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

5.6 AUX DESCRIPTION........................................................................................................................................................ 11

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

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

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

6.1 MODE SWITCHING.................................................................................................................... 13

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

6.3 WOR MODE（MODE 1）............................................................................................................................................ 14

6.4 CONFIGURATION MODE（MODE 2）............................................................................................................................ 14

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

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

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S1C User manual

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

7.2 REGISTER DESCRIPTION.................................................................................................................................................. 16

7.3 FACTORY DEFAULT PARAMETER...................................................................................................................................... 18

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.................................................................................................................................. 22

12 PRODUCTION GUIDANCE......................................................................................................... 22

12.1 REFLOW SOLDERING TEMPERATURE.............................................................................................................................. 22

12.2 REFLOW SOLDERING CURVE......................................................................................................................................... 23

13 E22 SERIES.................................................................................................................................... 23

14 ANTENNA RECOMMENDATION........................................................................................... 24

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

REVISION HISTORY.......................................................................................................................... 25

ABOUT US.......................................................................................................................................... 25

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S1C User manual

Disclaimer

EBYTE reserves all rights to this document and the information contained herein.

Products, names, logos and designs described herein may in whole or in part be

subject to intellectual property rights. Reproduction, use, modification or disclosure to

third parties of this document or any part thereof without the express permission of

EBYTE is strictly prohibited.

The information contained herein is provided “as is” and EBYTE assumes no

liability for the use of the information. No warranty, either express or implied, is given,

including but not limited, with respect to the accuracy, correctness, reliability and

fitness for a particular purpose of the information. This document may be revised by

EBYTE at any time. For most recent documents, visit www.ebyte.com.

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S1C User manual

1. Overview

1.1 Introduction

E22-900T22S1C is a wireless serial port module (UART) based

on SX1262 RF chip. It has multiple transmission modes, working in

the 850.125MHz~930.125MHz, (default 900.125MHz), 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 packet.

1.2 Features

Communication distance tested is up to 7km

Maximum transmission power of 160mW, software multi-level adjustable；

Support the global license-free ISM 868/915MHz band；

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

Support new generation LoRa technology based on SX1262；

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. E22-900T22S1C 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.

Networking function: The module can implement multi-level repeater networking. Multi-level repeater is suitable for

ultra long-distance communication. Multiple networks in the same area can run simultaneously.

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.

Fixed-point transmission: supports address function, the host can transmit data to any address, any channel, to achieve

networking, repeater and other application. For example: module A transmits data to module B (address is 0x00 01,

channel is 0x80), date is AA BB CC, the communication format is: 00 01 80 AA BB CC, where 00 01 is the module B address

and 80 is the module B channel, then module B can receive the AA BB CC (other modules do not receive data).

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.

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S1C User manual

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.

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: 900MHz is free frequency band, users can use it directly without application; 900MHz 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

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）

2.3

5.0

5.5

≥5.0 V ensures output power

Communication level（V）

3.3

For 5V TTL, It is recommended to add

level conversion

Operating temperature（℃）

-40

Industrial design

Operating frequency（MHz）

850.125

930.125

Support ISM band

Power

consump

tion

TX current（mA）

155

Instant power consumption

RX current（mA）

Sleep current （μA）

Software is shut down

Max Tx power（dBm）

21.5

22.0

22.5

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

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S1C User manual

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 Byte

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

bytes per packet to transmit

Buffer

1000 Byte

Modulation

LORA

Communication interface

UART

@3.3V

Package

SMD

Connector

1.27mm

Size

16 * 26 mm

Antenna

IPEX/stamp hole

50 ohm impedance

3 Size and pin definition

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S1C User manual

No.

Name

Direction

Function

GND

Ground

GND

Ground

GND

Ground

GND

Ground

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.

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 (suspending is allowed).

VCC

Power supply ：2.3~ 5.2V DC

GND

Ground

NRST

Input

Module reset pin, low reset

GND

Ground

GND

Ground

GND

Ground

ANT

Antenna

GND

Ground

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S1C User manual

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.

5 Function description

5.1 Fixed transmission

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