Chengdu Ebyte Electronic Technology E22900T22S User Manual

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E22-900T22S User Manual

SX1262 SMD Wireless Module

CONTENTS

1. OVERVIEW

1.1 INTRODUCTION

1.2 FEATURES

1.3 APPLICATION

1.4 FUNCTION INTRODUCTION

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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

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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

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3 3 3 4

5 5

8 9 9 9 9

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）

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7. REGISTER READ AND WRITE CONTROL

7.1 COMMAND FORMAT

7.2 REGISTER DESCRIPTION

7.3 FACTORY DEFAULT PARAMETER

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12 12 13 13 13

13 15 17

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

8. REPEATER NETWORKING MODE

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9. CONFIGURATION INSTRUCTIONS ON COMPUTER

10. HARDWARE DESIGN

11. FAQ

11.1 COMMUNICATION RANGE IS TOO SHORT

11.2 MODULE IS EASY TO DAMAGE

11.3 BER(BIT ERROR RATE) IS HIGH

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12. PRODUCTION GUIDANCE

12.1 REFLOW SOLDERING TEMPERATURE

12.2 REFLOW SOLDERING CURVE

13. E22 SERIES

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20 20 21

21 22

14. ANTENNA RECOMMENDATION

15. PACKAGE FOR BATCH ORDER

REVISION HISTORY

ABOUT US

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Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

1. Overview

 Communication distance tested is up to 5km



 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

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

 Low power consumption for battery supplied applications;

 Support 2.3V~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.

 Home security alarm and remote keyless entry;;

1.1 Introduction

E22-900T22S is a wireless serial port module (UART) based on SEMTECH's SX1262 RF chip. Working in the

902MHz~928MHz, (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 packets.

1.2 Features

Maximum transmission power of 182.8mW; Support the global license-free ISM 915MHz band;

of software is reduced by 35%;

1.3 Application

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

 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.

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

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

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

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

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

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

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

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

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

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

1.4 Function introduction

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

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

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.

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.

wirelessly.

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

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.

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).

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.

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.

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

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

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

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

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

2. Specification and 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

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）

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）

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

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

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

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

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

and easy to be interfered.

2.1 Limit parameter

2.2 Operating parameter

902

- - -

928

5000m Test condition：clear and open area, antenna gain: 3dBi，

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

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

TX length

240 Btye

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

bytes per packet to transmit

Buffer

1000 Btye

Modulation

No.

Name

Direction

Function

GND

Ground

LoRa

Communication interface UART

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. E22-900T22S User manual

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

GND

Ground

GND

Ground

GND

Ground

ANT

Antenna

GND

Ground

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

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.

4. Connect to MCU

5. Function description

5.1 Fixed transmission

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

 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

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

 When module A is the receiver, it can receive the data sent from all modules under channel 0x04, the purpose of monitor

5.2 Broadcasting transmission

5.3 Broadcasting address

purpose of broadcast is realized.

5.4 Monitor address

is realized.

5.5 Reset

When the module is powered, AUX outputs low level immediately, conducts hardware self-check and sets the operating mode

based on user’s parameters. During the process, the AUX remains low level. After the process completed, the AUX outputs high

level and starts to work as per the operating mode combined by M1 and M0. Therefore, users need to wait the AUX rising edge

as the start of module’s normal work.

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

 AUX Pin can be used as indication for wireless send & receive buffer and self-check.

 It can indicate whether there are data that are not sent yet via wireless way, or whether all wireless data has been sent

 To wake up external MCU

5.6 AUX description

through UART, or whether the module is still in the process of self-check initialization.

5.6.1 Indication of UART output

5.6.2 Indication of wireless transmitting

Buffer (empty): the internal 1000 bytes data in the buffer are written to the RFIC (Auto sub-packaging). When AUX=1, the user can input data less than 1000 bytes continuously without overflow. Buffer (not empty): when AUX=0, the internal 1000 bytes data in the buffer have not been written to the RFIC completely. If the user starts to transmit data at this circumstance, it may cause overtime when the module is waiting for the user data, or transmitting wireless sub package.When AUX = 1, it does not mean that all the UART data of the module have been transmitted already, perhaps the last packet of data is still in transmission.

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

 Only happened when power-on resetting or exiting sleep mode

No.

Description

For function 1 & function 2 mentioned above, the priority should be given to the one with low level output, which means

if it meets each of any low level output condition, AUX outputs low level, if none of the low level condition is met, AUX

outputs high level.

When AUX outputs low level, it means the module is busy & cannot conduct operating mode checking. Within 1ms since

AUX outputs high level, the mode switch will be completed.

After switching to new operating mode, it will not work in the new mode immediately until AUX rising edge lasts for 2ms .

If AUX stays on the high level, the operating mode switch can be effected immediately.

When the user switches to other operating modes from mode 3 (sleep mode) or it’s still in reset process, the module will

reset user parameters, during which AUX outputs low level.

Mode(0-3)

Description

Remark

0 Normal mode

UART and wireless channel are open, transparent transmission is on

Supports configuration over air via special command

1 WOR mode

01Can be defined as WOR transmitter and WOR receiver

Supports wake up over air

2 Configuration

mode

Users can access the register through the serial port to control the working state of the module

3 Deep sleep mode

11Sleep mode

5.6.3 Configuration procedure of module

5.6.4 Notes for AUX

6. Operating mode

There are four operating modes, which are set by M1 and M0, the details are as follows:

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

No.

Remark

 Users can combine M1 and M0 with high and low levels to determine the operating mode. Two GPIOs of the

MCU can be used to control mode switching;

 After changing M1 and M0: If the module is idle, after 1ms, it can start working according to the new mode;

 If the serial port data of the module has not been transmitted through the wireless, the new working mode can

be switched after the transmission is completed;

 If the module receives the wireless data and transmits the data through the serial port, it needs to finish

transmission before switching the new working mode;

 Therefore, mode switching can only be valid when AUX output is 1, otherwise it will delay switching.

 For example, users continuously inputs a large amount of data and simultaneously performs mode switching. At

this time, the switching mode operation is invalid; the module will process all the user data before performing the new mode detection;

 Therefore, the general recommendation is to detect the output state of the AUX pin and switch after 2ms when

the output is high.

 When the module is switched from other modes to sleep mode, if the data has not been processed yet;

 The module will process these data (including receiving and sending) before entering sleep mode. This feature

can be used for fast sleep, which saves power; for example, the transmitter module works in mode 0, the user transmits the serial port data "12345", and then does not have to wait for the AUX pin to be idle (high level), and can directly switch to sleep mode. And the user's main MCU immediately sleeps, the module will automatically transmit the user data through the wireless, and automatically enters sleep within 1ms;

 This saves MCU's working time and reduces power consumption.

 Similarly, any mode switching can use this feature. After the module processes the current mode event, it will

automatically enter the new mode within 1ms; thus eliminating the need for the user to query AUX and achieve the purpose of fast switching;

 For example, switching from the transmit mode to the receive mode; the user MCU can also enter sleep before

the mode switch, and use the external interrupt function to acquire the AUX change, thereby performing mode switching.

 This operation mode is very flexible and efficient, and is designed according to the user's MCU's operation

convenience, and can reduce the workload of the entire system as much as possible, improve system efficiency, and reduce power consumption.

Type

M0 = 0，M1 = 0

Transmitting

Users can input data through the serial port and the module will start wireless transmission.

Receiving

The module wireless receiving function is turned on, and after receiving the wireless data, it will be output through the serial port TXD pin.

6.1 Mode switching

6.2 Normal mode（Mode 0）

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

Type

M0 = 1，M1 =0

Transmitting

When defined as a transmitting party, a preamble is automatically added before transmitting.

Receiving

It can receive data normally, the receiving function is the same as mode 0.

Type

M0 = 0，M1 = 1

Transmitting

Wireless transmitting off

Receiving

Wireless receiving off

Configuration

Users can access the registers to configure the module's operation state.

Type

M0 = 1，M1 = 1

Transmitting

Unable to transmit wireless data

Receiving

Unable to receive wireless data

Note

When from the sleep mode to other modes, the module will reconfigure the parameters. During the configuration process, AUX will remain low; After configuration,it outputs high level, we suggest that user test rising edge T_BUSY.

6.3 WOR mode（Mode 1）

6.4 Configuration mode（Mode 2）

6.5 Deep sleep mode（Mode 3）

7. Register read and write control

7.1 Command format

In configuration mode (mode 2: M1 = 1, M0 = 0), the list of supported commands are as follows (only 9600, 8N1 format is

supported when)：

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

No.

Command format

Description

Set register

Command: C0+starting address+length+parameters Response: C1+starting address+length+parameters

E.g 1: Channel is 0x09

command starting address length parameter Send: C0 05 01 09 Returen: C1 05 01 09

E.g 2: Configure module address (0x1234), network address (0x00), serial port (9600 8N1) and air data rate (1.2K). Send: C0 00 04 12 34 00 61 Return: C1 00 04 12 34 00 61

Read register

Command: C1+starting address+parameters Response: C1+starting address+length+parameters

E.g 1：Read channel

command starting address length parameter Send: C1 05 01 Returen: C1 05 01 09

E.g 2: Read module address, network address, serial port and air data rate. Send: C1 00 04 Return: C1 00 04 12 34 00 61

Set temporary registers

Command: C2+starting address+parameters Response: C1+starting address+length+parameters

E.g 1: Channel is 0x09

command starting address length parameter Send: C2 05 01 09 Returen: C1 05 01 09

E.g 2: Configure module address (0x1234), network address (0x00), serial port (9600 8N1) and air data rate (1.2K). Send: C2 00 04 12 34 00 61 Return: C1 00 04 12 34 00 61

Wireless configuration

Command: CF CF + normal command Respond：CF CF + normal respond

E.g 1: Channel is 0x09

Command head command starting address length parameter Send: CF CF C0 05 01 09 Returen: CF CF C1 05 01 09

E.g 2: Configure module address (0x1234), network address (0x00), serial port (9600 8N1) and air data rate (1.2K). Send: CF CF C2 00 04 12 34 00 61 Return: CF CF C1 00 04 12 34 00 61

Wrong format

Wrong format respond: FF FF FF

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

Address

Read or

write

Name

Description

Remark

00H

Read/W

rite

ADDH

ADDH（default 0）  The module address is high byte and low byte.

Note: When the module address is FFFF, it can be used as the broadcast and monitor address, that is the module will not perform address filtering.

01H

Read/W

rite

ADDL

ADDL（default 0）

02H

Read/W

rite

NETID

NETID（default 0）  Network address, used to distinguish the network.

When communicating with each other, they should be set to the same.

03H

Read/W

rite

REG0

7，6，5 UART: Serial port rate（bps）

000: 1200 001: 2400 010: 4800 011: 9600（default） 100: 19200 101: 38400 110: 57600 111: 115200

--------------------------------------4，3： Serial parity bit

00：8N1（default） 01：8O1 10：8E1 11：8N1（equal to 00）

----------------------------------2，1，0，air data rate

000: 0.3k 001: 1.2k 010: 2.4k（default） 011: 4.8k 100: 9.6k 101: 19.2k 110: 38.4k 111: 62.5k

 For the two modules that communicate with each

other, the serial port baud rate can be different, and the verification method can also be different.

 When transmitting large packets continuously,

users need to consider the data blocking caused by the same baud rate, and data may even be lost. It is generally recommended that both parties have the same baud rate.

---------------------------------------

 Both parties must be the same

 The higher the rate, the shorter the distance

04H

Read/W

rite

REG1

7，6： Sub packet setting

00: 240 bytes（default） 01: 128 bytes 10: 64 bytes 11: 32 bytes

-------------------------------------5 ：RSSI Ambient noise enable

1: Enable 0: Disable（default）

-------------------------------------4，3，2 Reserve

-------------------------------------1，0： Transmitting power

 When the data is smaller than the sub packet

length, the serial output of the receiving end is an uninterrupted continuous output. When the data is larger than the sub packet length, the receiving end serial port will output the sub packet.

--------------------------------------------

 When enabled, the C0 C1 C2 C3 command can be

sent in the transmitting mode or WOR

7.2 Register description

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

00：22dbm（default） 01：17dbm 10：13dbm 11：10dbm

transmitting mode to read the register.

Command format: C0 C1 C2 C3 + starting address + read length Returns: C1 + address address + read length + read valid value E.g: send C0 C1 C2 C3 00 01

Return C1 00 01 rssi

----------------------------------

 Power and current are nonlinear, and power

efficiency is highest at maximum power.

 The current does not decrease in proportion to

the decrease in power.

05H

Read/W

rite

REG2

Channel control（CH） 0-80 represents a total of 81 channels

 Frequency= 850.125 + CH *1M

06H

Read/W

rite

REG3

7 Enable RSSI

1：Enable 0：Disable（default）

-------------------------------------6， Fixed point transmission

1：Fixed point transmission mode 0 ： Transparent transmission mode

（default）

--------------------------------------5 Enable reply

1：Enable repeater function 0：Disable repeater function

-------------------------------------4 LBT enable byte (monitor before transmission)

1：Enable 0：Disable（default）

-------------------------------------3 WOR transceiver control

1：WOR transmitter

The module receiving and transmitting functions are turned on, and a wake-up code is added when transmitting data. Receiving is turned on.

0：WOR receiver（default）

The module is unable to transmit data and works in WOR monitoring mode. The monitoring period is as follows (WOR cycle), which can save a lot of power.

--------------------------------------2，1，0，WOR cycle

000：500ms

 When enabled, the module receives wireless data

and it will follow an RSSI strength byte after output via the serial port TXD .---------------------------------------

 The module recognizes the first three bytes of the

serial data as: address high + address low + channel and takes it as the wireless transmitting target.

---------------------------------------

 After the reply function is enabled, if the target

address is not the module itself, the module will forward it once.

 In order to prevent data return-back, it is

recommended to use it in conjunction with the fixed point mode. That is: the target address is different from the source address.

----------------------------------------

 When enabled, wireless data will be monitored

before it is transmitted, which can avoid interference to a certain extent, but may cause data delay.

----------------------------------------

 Valid only for mode 1.

 After the WOR receiver receives the wireless data

and outputs it through the serial port, it will wait for 1000ms before entering the WOR again. Users can input the serial port data and return it via the wireless during this period. Each serial byte will be refreshed for 1000ms. Users must transmit the first byte within 1000ms.

---------------------------------------------

 Valid only for mode 1.

 Period T = (1 + WOR) * 500ms, maximum

4000ms, minimum 500ms

 The longer the WOR monitoring interval period,

the lower the average power consumption, but

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

001：1000ms 010：1500ms 011：2000ms（default） 100：2500ms 101：3000ms 110：3500ms 111：4000ms

the greater the data delay

 Both the transmitter and the receiver must be the

same (very important).

07H

Write

CRYPT_H

Key high byte (default 0）

 Write only, read returns 0

 Used for user encryption to avoid intercepting

airborne wireless data by similar modules.

 The module will internally use these two bytes as

a calculation factor to transform and encrypt the over-the-air wireless signal.

08H

Write

CRYPT_L

Key low byte (default 0)

80H~

86H

Read

only

PID

Product information 7 bytes  Product information 7 bytes

Factory default parameters：62 00 00 00 00 00

Model No.

Frequency

Address

Channel

Air data rate

Baud rate

Parity format

Power

E22-900T22S

900.125MHz

0x0000

0x32

2.4kbps

9600

8N1

22dbm

No.

Description

After setting the repeater mode by configuration, switch to the normal mode and the repeater starts working.

In the repeater mode, ADDH, ADDL are no longer used as the module address, but is correspondingly paired with the NETID. If the data of one of the networks is received, it is forwarded to another network. The network ID of the repeater itself is invalid.

In repeater mode, the repeater module cannot transmit and receive data, and cannot perform low-power operation.

The user enters the other mode from mode 3 (sleep mode) or during the reset process, the module resets the user parameters during which the AUX outputs low level.

2. In repeater mode, ADDH\ADDL is no longer used as the module address, and it is used as a NETID forwarding pairing flag.

1 Primary repeater

7.3 Factory default parameter

8. Repeater networking mode

Repeater networking rules:

1. Forwarding rules, the repeater can forward data in both directions between two NETIDs.

Figure:

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

Two-way repeater

 The following figure shows the E22-900T22S configuration host computer display interface, the user can switch to the

“Node 1” NETID is 08.

“Node 2” NETID is 33.

Primary repeater 1‘s ’ADDH\ADDL are 08，33.

So the signal sent by node 1 (08) can be forwarded to node 2 (33)

At the same time, node 1 and node 2 have the same address, so the data transmitted by node 1 can be received by node 2.

② Secondary repeater

Secondary repeater’s ADDH\ADDL are 33，05.

Therefore, Repeater 2 can forward the data of Repeater 1 to the network NETID: 05.

Thus node 3 and node 4 can receive node 1 data. Node 4 outputs data normally, and node 3 has a different address than node 1, so no data is output.

As shown in the figure: the data sent by node 1, the nodes 2, 4 can receive the data sent by node 2, 4, and node 1 can also

receive it.

9. Configuration instructions on computer

command mode through M0M1, and quickly configure and read the parameters on computer.

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

 In the configuration on computer, the module address, frequency channel, network ID, and key are all in decimal mode.

 When the user configures the repeater mode using the host computer, special attention must be paid. Since the

 It is recommended to use a DC stabilized power supply. The power supply ripple factor is as small as possible,

 Please pay attention to the correct connection of the positive and negative poles of the power supply.

 Please check the power supply to ensure it is within the recommended voltage otherwise when it exceeds the

 Please check the stability of the power supply, the voltage can not be fluctuated frequently;

 When designing the power supply circuit for the module, it is often recommended to reserve more than 30%

The range of values of each parameter is:

Network address: 0-65535

Frequency channel: 0-80

Network ID: 0-255

Key: 0-65535

parameters are in decimal mode in the host computer, the module address and network ID need to be converted into hexadecimal. For example, if the network ID input by the transmitting end A is 02, and the network ID input by the receiving end B is 10, when the repeater end R sets the module address, the hexadecimal value 0X020A is converted into the decimal value 522 as the repeater end R. Module address. That is, the module address value of the repeater terminal R is 522 at this time.

10. Hardware design

and the module needs to be reliably grounded.;

Reverse connection may cause permanent damage to the module;

maximum value the module will be permanently damaged;

of the margin, so the whole machine is beneficial for long-term stable operation.;

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

 The module should be as far away as possible from the power supply, transformers, high-frequency wiring

 High-frequency digital routing, high-frequency analog routing, and power routing must be avoided under

 Assuming the module is soldered or placed over the Top Layer, it is wrong to randomly route over the

 It is assumed that there are devices with large electromagnetic interference around the module that will

 Assume that there are traces with large electromagnetic interference (high-frequency digital, high-frequency

 If the communication line uses a 5V level, a 1k-5.1k resistor must be connected in series (not recommended,

 Try to stay away from some physical layers such as TTL protocol at 2.4GHz , for example: USB3.0;

 The mounting structure of antenna has a great influence on the performance of the module. It is necessary to

 The antenna must not be installed inside the metal case, which will cause the transmission distance to be

 The communication distance will be affected when obstacle exists.

 Data lose rate will be affected by temperature, humidity and co-channel interference.

 The ground will absorb and reflect wireless radio wave, so the performance will be poor when testing near ground.

 Sea water has great ability in absorbing wireless radio wave, so performance will be poor when testing near the sea.

 The signal will be affected when the antenna is near metal object or put in a metal case.

 Power register was set incorrectly, air data rate is set as too high (the higher the air data rate, the shorter the distance).

 The power supply low voltage under room temperature is lower than 2.5V, the lower the voltage, the lower the

 Due to antenna quality or poor matching between antenna and module.

 Please check the power supply source, ensure it is 2.0V~3.6V, voltage higher than 3.6V will damage the module.

and other parts with large electromagnetic interference.;

the module. If it is necessary to pass through the module, assume that the module is soldered to the Top Layer, and the copper is spread on the Top Layer of the module contact part(well grounded), it must be close to the digital part of the module and routed in the Bottom Layer;

Bottom Layer or other layers, which will affect the module's spurs and receiving sensitivity to varying degrees;

greatly affect the performance. It is recommended to keep them away from the module according to the strength of the interference. If necessary, appropriate isolation and shielding can be done;

analog, power traces) around the module that will greatly affect the performance of the module. It is recommended to stay away from the module according to the strength of the interference.If necessary, appropriate isolation and shielding can be done.

there is still a risk of damage);

ensure that the antenna is exposed, preferably vertically upward. When the module is mounted inside the case, use a good antenna extension cable to extend the antenna to the outside;

greatly weakened.

11. FAQ

11.1 Communication range is too short

transmitting power.

11.2 Module is easy to damage

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

 Please check the stability of power source, the voltage cannot fluctuate too much.

 Please make sure antistatic measure are taken when installing and using, high frequency devices have electrostatic

 Please ensure the humidity is within limited range, some parts are sensitive to humidity.

 Please avoid using modules under too high or too low temperature.

 There are co-channel signal interference nearby, please be away from interference sources or modify

 Poor power supply may cause messy code. Make sure that the power supply is reliable.

 The extension line and feeder quality are poor or too long, so the bit error rate is high;

Profile Feature

Curve characteristics

Sn-Pb Assembly

Pb-Free Assembly

Solder Paste

Solder paste

Sn63/Pb37

Sn96.5/Ag3/Cu0.5

Preheat Temperature min （Tsmin）

Min preheating temp.

100℃

150℃

Preheat temperature max (Tsmax)

Mx preheating temp.

150℃

200℃

Preheat Time (Tsmin to Tsmax)(ts)

Preheating time

60-120 sec

Average ramp-up rate(Tsmax to Tp)

Average ramp-up rate

3℃/second max

Liquidous Temperature (TL)

Liquid phase temp.

183℃

217℃

Time（tL）Maintained Above（TL）

Time below liquid phase line

60-90 sec

30-90 sec

Peak temperature（Tp）

Peak temp.

220-235℃

230-250℃

Aveage ramp-down rate（Tp to Tsmax）

Aveage ramp-down rate

6℃/second max

Time 25℃ to peak temperature

Time to peak temperature for

25℃

max 6 minutes

max 8 minutes

susceptibility.

11.3 BER(Bit Error Rate) is high

frequency and channel to avoid interference;

12. Production guidance

12.1 Reflow soldering temperature

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

Model No.

Core IC

Frequency

Tx power

dBm

Distance

Package

Size

Antenna

E22-900T22S

SX1262

SMD

16*26

IPEX/Stamp hole

E22-230T22S

SX1262

230M225

SMD

16*26

IPEX/Stamp hole

E22-400T22S

SX1268

430M 470M

225SMD

16*26

IPEX/Stamp hole

E22-400M30S

SX1268

433M 470M

3012SMD

24*38.5

IPEX/Stamp hole

E22-900M30S

SX1262

868M 915M

3012SMD

24*38.5

IPEX/Stamp hole

E22-900M22S

SX1262

868M 915M

6.5

SMD

14*20

IPEX/Stamp hole

E22-400M22S

SX1268

433M 470M

6.5

SMD

14*20

IPEX/Stamp hole

12.2 Reflow soldering curve

13. E22 series

915M 22.62

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

14. Antenna recommendation

The antenna is an important role in the communication process. A good antenna can largely improve the

communication system.

15. Package for batch order

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual

Version

Date

Description

Issued by

1.00

2018-01-08

Initial version

huaa

1.10

2018-04-16

Content updated

huaa

1.20

2018-05-24

Content updated

Huaa

1.21

2018-07-20

Model name revised

Huaa

1.30

2018-10-23

Model No. split

Huaa

Revision history

About us

Technical support: support@cdebyte.com

Documents and RF Setting download link: www.ebyte.com

Thank you for using Ebyte products! Please contact us with any questions or suggestions: info@cdebyte.com

------------------------------------------------------------------------------------------------------------

Fax: 028-64146160 ext. 821

Web: www.ebyte.com

Address: Innovation Center D347, 4# XI-XIN Road,Chengdu, Sichuan, China

FCC Statement

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and (2) this device must accept any interference

received, including interference that may cause undesired operation.

Any Changes or modifications not expressly approved by the party responsible for compliance could void

the user's authority to operate the equipment.

FCC Radiation Exposure Statement

This modular complies with FCC RF radiation exposure limits set forth for an uncontrolled environment.

This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

This modular must be installed and operated with a minimum distance of 20 cm between the radiator and user body.

If the FCC identification number is not visible when the module is installed inside another device, then the

outside of the device into which the module is installed must also display a label referring to the enclosed

module. This exterior label can use wording such as the following: “Contains Transmitter Module FCC

ID: 2ALPH-E22900T22S Or Contains FCC ID: 2ALPH-E22900T22S ”

When the module is installed inside another device, the user manual of the host must contain below

warning statements;

1. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference.

(2) This device must accept any interference received, including interference that may cause undesired

operation.

2. Changes or modifications not expressly approved by the party responsible for compliance could void the

user's authority to operate the equipment.

The devices must be installed and used in strict accordance with the manufacturer's instructions as

described in the user documentation that comes with the product.

IP EX antenna port dont connect to all circuit and permanent disable function in device with FCC ID:

2ALPH-E22900T22S

Chengdu Ebyte Electronic Technology E22900T22S 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

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

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. Register read and write control

7.1 Command format

7.2 Register description

7.3 Factory default parameter

8. Repeater networking mode

9. Configuration instructions on computer

10. Hardware design

11. FAQ

11.1 Communication range is too short

11.2 Module is easy to damage

11.3 BER(Bit Error Rate) is high

12. Production guidance

12.1 Reflow soldering temperature

12.2 Reflow soldering curve

13. E22 series

14. Antenna recommendation

15. Package for batch order

Revision history

About us