Ebyte E22-900M22S User manual

E22-900M22S User Manual
SX1262 868/915MHz SPI SMD LoRa Module

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900M22S User manual
Copyright ©2012–2018, Chengdu Ebyte Electronic Technology Co.,Ltd. 1
Contents
1. Overview.............................................................................................................................................................................1
1.1 Introduction...............................................................................................................................................................2
1.2 Features.....................................................................................................................................................................2
1.3 Application................................................................................................................................................................3
2. Specification and parameter................................................................................................................................................3
2.1 Limit parameter.........................................................................................................................................................3
2.2 Operating parameter................................................................................................................................................. 3
3. Size and pin definition........................................................................................................................................................ 5
4. Basic Operation...................................................................................................................................................................6
4.1 Hardware Design...................................................................................................................................................... 6
4.2 Software Programming............................................................................................................................................. 7
5. FAQ.....................................................................................................................................................................................8
5.1 Communication range is too short............................................................................................................................ 8
5.2 Module is easy to damage.........................................................................................................................................8
5.3 High bit error rate..................................................................................................................................................... 8
6. Welding operation guidance................................................................................................................................................9
6.1 Reflow Soldering Temperature................................................................................................................................. 9
6.2 Reflow Soldering Curve......................................................................................................................................... 10
7. Related Model...................................................................................................................................................................10
8.1 Antenna recommendation....................................................................................................................................... 11
9. Batch packaging................................................................................................................................................................12
Revision history.................................................................................................................................................................... 12
About us................................................................................................................................................................................12

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900M22S User manual
Copyright ©2012–2018, Chengdu Ebyte Electronic Technology Co.,Ltd.
1
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. E22-900M22S User manual
Copyright ©2012–2018, Chengdu Ebyte Electronic Technology Co.,Ltd.
2
1. Overview
1.1 Introduction
The E22-900M22S is based on the SX1262, a new generation of LoRaTM
RF chip manufactured by Semtech, USA. It is an ultra-small and self-developed
868MHz, 915MHz SMD LoRaTM wireless module.
Because it adopted the original SX1262 as main core, so the anti-interference performance and communication
distance have been further improved compared to the previous generation LoRaTM transceiver.Due to its new LoRaTM
modulation technology, the anti-interference performance and communication distance are far superior to the current
FSK and GFSK modulation products. This module is mainly for smart home, wireless meter reading, scientific and
medical research, and long distance wireless communication equipment. The RF performance and components selection
are all in accordance with industrial-grade standards and this products obtained FCC, CE and RoHS certification already
and so users do not need to worry about the performance. Adopted industrial grade high precision 32MHz crystal, the
product can cover an ultra-wide frequency range of 850~930MHz and is backward compatible with SX1278 and
SX1276.
Since the module is a RF transceiver module only, users need to use the MCU driver or use a dedicated SPI debug tool.
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 0.018-62.5kbps in the LoRaTM mode；
Support 300kpbs in the FSK mode;
Compatible with the transceiver of SX1278/SX1276;
With large capacity, FIFO supports 256Byte data cache.;
New SF5 spreading factor to support dense networks;
Support 2.5V~3.7V power supply, more than 3.3V power supply can guarantee the best performance;
Industrial grade standard design, support -40 ~ 85 °C for working over a long time；
IPEX and stamp hole are optional, which is convenient for secondary development and integration.
The E22-900M22S passes the FCC&CE&ROHS certification.

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900M22S User manual
Copyright ©2012–2018, Chengdu Ebyte Electronic Technology Co.,Ltd.
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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）
0
3.7
Voltage over 3.7V 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
85
2.2 Operating parameter
Main parameter
Performance
Remark
Min.
Typ.
Max.
Operating voltage（V）
1.8
3.3
3.7
It’s recommended to use 3.3V.
Communication level（V）
3.3
For 5V TTL, It is recommended to add level
conversion
Operating temperature（℃）
-40
-
85
Industrial design
Operating frequency（GHz）
850
868/915
930
Support ISM band
Power
consumption
TX current（mA）
119
Instant power consumption
RX current（mA）
6.8
Sleep current（nA）
180
Software is shut down
Max Tx power（dBm）
21.4
21.5
22.3

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900M22S User manual
Copyright ©2012–2018, Chengdu Ebyte Electronic Technology Co.,Ltd.
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Receiving sensitivity（dBm）
-144
-146
-147
Air data rate is 0.3kbps
Air data rate（bps）
0.6k
-
300k
Controlled via user’s programming
0.018k
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: 0.3kbps
FIFO
256Byte
Maximum length of single transmission
Crystal frequency
32MHz
Modulation
LoRa(recommended)
Package
SMD
Connector
1.27mm
Stamp hole
Communication interface
SPI
0-10Mbps
Size
20* 14*2.8 mm
Antenna
IPEX/IPEX
50 ohm impedance

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900M22S User manual
Copyright ©2012–2018, Chengdu Ebyte Electronic Technology Co.,Ltd.
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3. Size and pin definition
No.
Name
Direction
Function
1
GND
Ground wire, connected to the power reference ground
2
GND
Ground wire, connected to the power reference ground
3
GND
Ground wire, connected to the power reference ground
4
GND
Ground wire, connected to the power reference ground
5
GND
Ground wire, connected to the power reference ground
6
RXEN
Input
RF switch receiving control pin, connected to external microcontroller IO,
valid in high level
7
TXEN
Input
RF switch transmitting control pin, connected to external microcontroller IO
or DIO2, valid in high level
8
DIO2
Input/Output
Configurable universal IO port (see SX1262 manual for details)
9
VCC
Power supply, 1.8~3.7V(It is recommended to add external ceramic filter
capacitor)
10
GND
Ground wire, connected to the power reference ground
11
GND
Ground wire, connected to the power reference ground

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900M22S User manual
Copyright ©2012–2018, Chengdu Ebyte Electronic Technology Co.,Ltd.
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12
GND
Ground wire, connected to the power reference ground
13
DIO1
Input/Output
Configurable universal IO port (see SX1262 manual for details)
14
BUSY
Output
For status indication (see SX1262 manual for details)
15
NRST
Input
Chip reset trigger input pin, valid in low level
16
MISO
Output
SPI data output pin
17
MOSI
Input
SPI data output pin
18
SCK
Input
SPI data output pin
19
NSS
Input
Module chip select pin for starting an SPI communication
20
GND
Ground wire, connected to the power reference ground
21
ANT
Antenna interface, stamp hole (50 ohm characteristic impedance)
22
GND
Ground wire, connected to the power reference ground
4. Basic Operation
4.1 Hardware Design
SN
Brief Connection between Module and Single Chip Microcomputer
1
The IO0、IO1、IO2、IO3 in MCU means the IO port of MCU.
2
DIO1、DIO2 is the normal IO port, which can be configured to multiple function. The DIO2 can
connect with TXEN，but not with the IO port of MCU. It’s used to control RF switch, see more details
in SX1262 datasheet. Also It can be floated when not in use.
3
The DIO3 is powered by a 32MHz TCXO crystal.
4
Ensure the good grounding, large area of paving, small the power supply ripple, the filter capacitor

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900M22S User manual
Copyright ©2012–2018, Chengdu Ebyte Electronic Technology Co.,Ltd.
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should be increased and as close as possible to the VCC and GND pins of module.
Note:
It is recommended to use DC stabilized power supply to supply power to the module. The power supply ripple
coefficient is as small as possible, and the module needs to be reliably grounded.
Please pay attention to the correct connection of the positive and negative poles of the power supply. If the reverse
connection is connected, the module may be permanently damaged.
Please check the power supply to ensure that between the recommended supply voltage, if exceeding the maximum,
the module will be permanently damaged.
Please check the stability of the power supply, the voltage can not be significantly frequent.
When designing the power supply circuit for the module, it is often recommended to reserve more than 30% of the
margin, and the whole machine is beneficial for long-term stable operation.
The module should be as far away as possible from the power supply, transformers, high-frequency wiring and other
parts with large electromagnetic interference.
High-frequency digital traces, high-frequency analog traces, and power traces must be avoided under 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(All copper-covered and well grounded), and must be close to
the digital part of the module and routed in the Bottom Layer.
Assuming the module is soldered or placed in the Top Layer, it is also wrong to randomly route the Bottom Layer or
other layers, which will affect the module's spurs and receiving sensitivity to varying degrees.
Assume that there are traces with large electromagnetic interference around the module (high-frequency digital,
high-frequency analog, power trace), which 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;
If the communication line uses a 5V level, a 1k-5.1k resistor must be connected in series (not recommended, there is
still a risk of damage).
Try to stay away from some physical layers and also have a 2.4GHz TTL protocol, for example: USB3.0
The antenna mounting structure has a great influence on the performance of the module. It is necessary to 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 of the case.
The antenna must not be installed inside the metal case, which will greatly reduce the transmission distance.
It is recommended to add a 200R protection resistor to the RXD/TXD of the external MCU.
4.2 Software Programming
Its driving mode is exactly the same as SX1268/SX1262. Users can operate according to SX1268/SX1262 chip
datasheet.
DIO1 and DIO2 are general-purpose IO ports, which can be configured into multiple functions. DIO2 can be
connected to TXEN and not connected to the MCU's IO port. It can be used to control the RF switch transmission.
If not used, you can hang it. For details, see the SX1262 manual.
DIO 3 is used to supply 32 MHz TCXO crystal oscillator.

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900M22S User manual
Copyright ©2012–2018, Chengdu Ebyte Electronic Technology Co.,Ltd.
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5. FAQ
5.1 Communication range is too short
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).
When the power supply at room temperature is lower than the recommended low voltage, the lower the voltage is,
the lower the transmitting power is.
Due to antenna quality or poor matching between antenna and module.
5.2 Module is easy to damage
Please check the power supply and ensure it is within the recommended range. Voltage higher than the peak will
lead to a permanent damage to the module.
Please check the stability of power supply and ensure the voltage not to fluctuate too much.
Please make sure anti-static measures are taken when installing and using, high frequency devices have electrostatic
susceptibility.
Please ensure the humidity is within limited range for some parts are sensitive to humidity.
Please avoid using modules under too high or too low temperature.
5.3 High bit error rate
There are co-channel signal interference nearby, keep away from interference sources or modify frequency, channel
to avoid interference.
The clock waveform on the SPI is not standard. Check whether there is interference on the SPI line. The SPI bus
line should not be too long.
Unsatisfactory power supply may also cause garbled characters, and ensure the reliability of the power supply.
If the extension cable or feeder is of poor quality or too long, the bit error rate will be high.

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900M22S User manual
Copyright ©2012–2018, Chengdu Ebyte Electronic Technology Co.,Ltd.
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6. Welding operation guidance
6.1 Reflow Soldering Temperature
Profile Feature
Curve feature
Sn-Pb Assembly
Pb-Free Assembly
Solder Paste
Solder paste
Sn63/Pb37
Sn96.5/Ag3/Cu0.5
Preheat Temperature min （Tsmin）
Minimum preheating
temperature
100℃
150℃
Preheat temperature max (Tsmax)
Maximum preheating
temperature
150℃
200℃
Preheat Time (Tsmin to Tsmax)(ts)
Preheating time
60-120 sec
60-120 sec
Average ramp-up rate(Tsmax to Tp)
Average rising rate
3℃/second max
3℃/second max
Liquidous Temperature (TL)
Liquid phase temperature
183℃
217℃
Time（tL）Maintained Above（TL）
Time above liquidus
60-90 sec
30-90 sec
Peak temperature（Tp）
Peak temperature
220-235℃
230-250℃
Aveage ramp-down rate（Tp to Tsmax）
Average descent rate
6℃/second max
6℃/second max
Time 25℃ to peak temperature
Time of 25 ° C to peak
temperature
6 minutes max
8 minutes max

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900M22S User manual
Copyright ©2012–2018, Chengdu Ebyte Electronic Technology Co.,Ltd.
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6.2 Reflow Soldering Curve
7. Related Model
Model
Chip
Frequency
Hz
Transmit
power dBm
Test distance
km
Packaging
Size
mm
Communication
Interface
E22-900T22S
SX1262
868M 915M
22
7
SMD
16*26
UART
E22-230T22S
SX1262
230M
22
7
SMD
16*26
UART
E22-400T22S
SX1268
433M 470M
22
7
SMD
16*26
UART
E22-400M30S
SX1268
433M 470M
30
12
SMD
24*38.5
SPI
E22-900M30S
SX1262
868M 915M
30
12
SMD
24*38.5
SPI
E22-900M22S
SX1262
868M 915M
22
6.5
SMD
14*20
SPI
E22-400M22S
SX1268
433M 470M
22
6.5
SMD
14*20
SPI

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900M22S User manual
Copyright ©2012–2018, Chengdu Ebyte Electronic Technology Co.,Ltd.
11
8. Antenna Type
8.1 Antenna recommendation
The antenna plays an important role in the communication process. The inferior antenna often has a great impact on the
communication system. Therefore, we recommend some antennas that support our wireless modules and have excellent
performance and reasonable price.
Product
Type
Frequenc
y Hz
Interface
Gain
dBi
Size
Feeder
Features
TX433-NP-4310
Soft PCB antenna
433M
SMA-J
2
43.8*9.5mm
-
Built-in flexible FPC soft
antenna
TX433-JW-5
Soft PCB antenna
433M
SMA-J
2
50mm
-
Flexible, Omnidirectional
TX433-JWG-7
Soft PCB antenna
433M
SMA-J
2.5
75mm
-
Flexible, Omnidirectional
TX433-JK-20
Soft PCB antenna
433M
SMA-J
3
210mm
-
Flexible, Omnidirectional
TX433-JK-11
Soft PCB antenna
433M
SMA-J
2.5
110mm
-
Flexible, Omnidirectional
TX433-XP-200
Sucker antenna
433M
SMA-J
4
19cm
200cm
High Gain
TX433-XP-100
Sucker antenna
433M
SMA-J
3.5
18.5cm
100cm
High Gain
TX433-XPH-300
Sucker antenna
433M
SMA-J
6
96.5cm
300cm
High Gain
TX433-JZG-6
Soft PCB antenna
433M
SMA-J
2.5
52mm
-
Ultra short straight，
Omnidirectional
TX433-JZ-5
Soft PCB antenna
433M
SMA-J
2
52mm
-
Ultra short straight，
Omnidirectional
TX490-XP-100
Sucker antenna
490M
SMA-J
50
12cm
100cm
High Gain
TX490-JZ-5
Soft PCB antenna
490M
SMA-J
50
50mm
-
High Gain

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900M22S User manual
Copyright ©2012–2018, Chengdu Ebyte Electronic Technology Co.,Ltd.
12
9. Batch packaging
Revision history
Version
Date
Description
Issued by
1.0
2018-09-25
Original version
huaa
1.1
2019-02-17
Content added
Ray
1.2
2019-04-03
Content updated
Ray
1.3
2019-11-14
Ren
1.4
2020-11-26
Error correction
Linson
About us
Website: www.ebyte.com Sales: [e-mail] Support: [e-mail]
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ddress: Innovation Center B333~D347, 4# XI-XIN road,High-tech district (west), Chengdu, Sichuan, China