Ebyte E22-230T30/33E User manual

0
E22-230T30/33E 、E22-400T30/33E
SX1262/SX1268 230/400Mhz
Mini PCIE interface 1W/2W LoRa wireless module

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Contents
DISCLAIMER...................................................................................................................................................................................................... 0
1 PRODUCT OVERVIEW ................................................................................................................................................................................1
1.1 PRODUCT INTRODUCTION .......................................................................................................................................................................1
1.2 FEATURES ...................................................................................................................................................................................................1
1.3 APPLICATIONS ...........................................................................................................................................................................................2
2 SPECIFICATIONS .......................................................................................................................................................................................... 3
2.1 RF PARAMETERS ....................................................................................................................................................................................... 3
2.2 HARDWARE PARAMETERS ........................................................................................................................................................................ 4
2.3 ELECTRICAL PARAMETERS.........................................................................................................................................................................4
3 SIZE AND PIN DEFINITION .......................................................................................................................................................................6
4 RECOMMENDED CONNECTION DIAGRAM ......................................................................................................................................8
5 MODELS ..........................................................................................................................................................................................................9
5.1 FIXED MODEL ............................................................................................................................................................................................ 9
5.2 BROADCAST MODEL .................................................................................................................................................................................9
5.3 BROADCAST ADDRESS ........................................................................................................................................................................... 10
5.4 LISTENING ADDRESS ...............................................................................................................................................................................10
5.5 MODULE RESET ...................................................................................................................................................................................... 10
5.6 DETAILED EXPLANATION OF AUX ........................................................................................................................................................10
5.6.1 Serial port data output indication.......................................................................................................................................10
5.6.2 Wireless transmission indication ......................................................................................................................................... 11
5.6.3 The module is being configured ......................................................................................................................................... 11
5.6.4 Module power-on initialization process ...........................................................................................................................11
5.6.5 Module Mode Switching Process ........................................................................................................................................12
5.6.6 Precautions ..................................................................................................................................................................................13
5.7 DETAILED EXPLANATION OF WIRELESS SENDING AND RECEIVING INSTRUCTIONS ........................................................................13
6 WORKING MODE ......................................................................................................................................................................................14
6.1 MODE SWITCHING ................................................................................................................................................................................. 14
6.2 GENERAL MODE (MODE 0)..................................................................................................................................................................15
6.3 WOR MODE (MODE 1) ........................................................................................................................................................................15
6.4 CONFIGURATION MODE (MODE 2).................................................................................................................................................... 15
6.5 DEEP SLEEP MODE (MODE 3) ............................................................................................................................................................. 16
7 REGISTER READ AND WRITE CONTROL ...........................................................................................................................................16
7.1 INSTRUCTION FORMAT .......................................................................................................................................................................... 16
7.2 REGISTER DESCRIPTION ..........................................................................................................................................................................23
7.3 FACTORY DEFAULT PARAMETERS .........................................................................................................................................................23
8 RELAY NETWORKING MODE ................................................................................................................................................................23

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9 PC CONFIGURATION INSTRUCTIONS ...............................................................................................................................................24
10 HARDWARE DESIGN ............................................................................................................................................................................. 25
11 FAQ ..............................................................................................................................................................................................................26
11.1 THE TRANSMISSION DISTANCE IS NOT IDEAL ................................................................................................................................... 26
11.2 THE MODULE IS EASILY DAMAGED .....................................................................................................................................................26
11.3 THE BIT ERROR RATE IS TOO HIGH .....................................................................................................................................................26
12 WELDING OPERATION INSTRUCTIONS ......................................................................................................................................... 27
12.1 REFLOW SOLDERING TEMPERATURE...................................................................................................................................................27
12.2 REFLOW SOLDERING CURVE .............................................................................................................................................................. 27
13 RELATED MODELS ..................................................................................................................................................................................28
14 ANTENNA GUIDE ....................................................................................................................................................................................28
14.1 ANTENNA RECOMMENDATION ..........................................................................................................................................................28
REVISE HISTORY ............................................................................................................................................................................................29
ABOUT US ....................................................................................................................................................................................................... 29

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Disclaimer
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with respect to the accuracy, correctness, reliability and fitness for a particular purpose of the
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www.cdebyte.com.

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1 Product Overview
1.1 Product Introduction
E22-230T30E, E22-230T33E, E22-400T30E, E22-400T33E are the new generation of LoRa wireless spread
spectrum modules. Among them, E22-230T30E and E22-230T33E are based on the wireless serial port module designed
by SEMTECH's SX1262 chip scheme, while E22-400T30E and E22-400T33E are based on SX1268 chip scheme. It has
a variety of transmission modes. E22-230T30E and E22-230T33E work in the 220.125 ～236.125MHz frequency band
(230.125MHz by default), E22-400T30E and E22-400T33E work in the 410.125 ～493.125MHz frequency band
(433.125MHz by default), LoRa spread spectrum technology, compatible with 3.3V and 5V IO port voltage, MINI PCI-e
standard packaging, UART/RS485/RS232/USB communication interface selection, and communication is compatible
with E22-T series products, facilitating user development and use.
E22-230T30E , E22-230T33E , E22-400T30E , E22-400T33E adopt a new generation of LoRa spread spectrum
technology. Compared with the traditional SX1278 solution, this solution has a longer transmission distance and faster
speed; it supports air wake-up, wireless configuration, and carrier monitoring , automatic relay, communication key and
other functions, support subpackage length setting, and can provide customized development services.
Note: The above picture is the 3D size drawing of the E22-230T30E module , and the other modules are the same
size, pin compatible, and different in frequency band and power.
1.2 Features
On the new LoRa spread spectrum modulation technology developed by SEMTECH 's SX1262 and SX1268 RF
chips , it brings longer communication distance and stronger anti-interference ability;
Automatic relay networking, multi-level relay is suitable for ultra-long-distance communication, and multiple
networks run simultaneously in the same area;
Support users to set the communication key by themselves, and it cannot be read, which greatly improves the
Frequency
Power

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confidentiality of user data;
Support LBT function, monitor the channel environment noise before sending, which can greatly improve the
communication success rate of the module in harsh environments;
Support RSSI signal strength indication function , used to evaluate signal quality, improve communication network,
distance measurement;
Wireless parameter configuration, send command packets wirelessly, remotely configure or read wireless module
parameters;
Support air wake-up, that is, ultra-low power consumption function, suitable for battery-powered applications;
Fixed-point transmission, broadcast transmission, channel monitoring;
Support deep sleep, the power consumption of the whole machine is about 2mA in this mode ;
Support UART /RS485/RS232/USB communication interface selection, single output;
E22-400T30E and E22-400T33E support global license-free ISM 433MHz frequency band , and support 470MHz
meter reading frequency band;
E22-230T30E and E22-230T33E support 230MHz power frequency band;
The module has built-in PA+LNA , and the communication distance can reach 8km~12km under ideal conditions ;
The parameters are saved after power-off, and the module will work according to the set parameters after power-on;
High-efficiency watchdog design, once an exception occurs, the module will automatically restart and continue to
work according to the previous parameter settings;
E22-400T30E and E22-400T33E support the data transmission rate of 2.4k ~ 62.5kbps ;
E22-230T30E and E22-230T33E support the data transmission rate of 2.4k ~ 15.6kbps ;
3.3 ~ 5.5V power supply, power supply greater than 5V can guarantee the best performance;
Industrial-grade standard design, supporting long-term use at -40～+85 ℃;
The first -generation IPEX interface can be easily connected to an external antenna.
The baud rate supports 1200 , 2400 , 4800 , 9600 (default), 19200 , 38400 , 57600 , 115200 bps .
Communication is compatible with E22-T series products.
1.3 Applications
Home security alarm and remote keyless entry;
Home and industrial sensors, etc.;
Wireless alarm security system;
Building automation solutions;
Wireless industrial grade remote control;
Healthcare products;
Advanced Meter Reading Architecture (AMI) ;
Automotive industry applications.

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2 Specifications
2.1 RF parameters
RF parameters
Value
Remark
E22-230T30E
E22-230T33E
Working
frequency
220.125～236.125 MHz
-
Transmit power
30dBm
33dBm
The software is adjustable and needs to be developed and
set by the user
Acceptance
sensitivity
-124 dBm
Air rate 2.4 kbps
FIFO
240 Byte
Subpackage 32/64/128/240 bytes can be sent by
command setting
Modulation
LoRa
A new generation of LoRa modulation technology
Air speed
2.4k~15.6kbps
User Programmable Control
Measured distance
10km
16km
In a clear and open environment, the antenna gain is
5dBi , the antenna height is 2.5 meters, and the air rate is
2.4kbps
RF parameters
Value
Remark
E22-400T30E
E22-400T33E
Working
frequency
410.125～493.125 MHz
Support ISM frequency band
Transmit power
30dBm
33dBm
The software is adjustable and needs to be developed and
set by the user
Acceptance
sensitivity
-124 dBm
Air rate 2.4 kbps
FIFO
240 Byte
Subpackage 32/64/128/240 bytes can be sent by
command setting
Modulation
LoRa
A new generation of LoRa modulation technology
Air speed
2.4k～62.5kbps
User Programmable Control
Measured distance
10km
16km
In a clear and open environment, the antenna gain is
5dBi , the antenna height is 2.5 meters, and the air rate is
2.4kbps

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2.2 Hardware parameters
Hardware
parameters
Parameter value
Remark
E22-230T30
E
E22-230T33E
E22-400T30E
E22-400T33E
Communicatio
n Interface
UART/RS485/RS232/USB
single output
Crystal
frequency
32MHz
-
Encapsulation
In-line
-
Interface
Mini-PCIE
-
Dimensions
30 * 51 mm
±0.2mm
Antenna form
1st generation IPEX
Equivalent impedance about
50 Ω
Product
Weight
7.2g
7.2g
7.2g
7.2g
±0.5g
2.3 Electrical parameters
Electrical
parameters
E22-230T30E
E22-230T33E
unit
Remark
Mini
value
Typical
value
Max
value
Mini
value
Typical
value
Max
value
Voltage
3.3
5.0
5.5
3.3
5.0
5.5
V
≥5.0V can guarantee the output
power More than 5.5V burns the
module permanently
Note: When the communication
interface is USB , the working
voltage is 3.7 ~ 5.5.
communica
tion level
-
3.3
-
-
3.3
-
V
Use of 5V TTL is recommended
plus level shifting
emission
current
-
650
-
-
1000
-
mA
Instantaneous power
consumption
receive
current
-
17
-
-
17
-
mA
-
Sleep
current
-
2
-
-
2
-
mA
software shutdown
Operating
temperature
-40
20
85
-40
20
85
℃
industrial design
Working
humidity
10
60
90
10
60
90
%
-
Storage
temperature
-40
20
125
-40
20
125
℃
-

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Electrical
parameters
E22-400T30E
E22-400T33E
unit
Remark
Mini
value
Typical
value
Max
value
Min
value
Typical
value
Max
value
Voltage
3.3
5.0
5.5
3.3
5.0
5.5
IN
≥5.0V can guarantee the output
power
More than 5.5V burns the
module permanently
Note: When the communication
mode is USB , the working
voltage is 3.7 ~ 5.5.
Communic
ation level
-
3.3
-
-
3.3
-
IN
Use of 5V TTL is recommended
plus level shifting
Emission
current
-
650
-
-
1000
-
mA
Instantaneous power
consumption
Receive
current
-
17
-
-
17
-
mA
-
Sleep
current
-
2
-
-
2
-
mA
software shutdown
Operating
temperature
-40
20
85
-40
20
85
℃
industrial design
Working
humidity
10
60
90
10
60
90
%
-
Storage
temperature
-40
20
125
-40
20
125
℃
-

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3 Size and pin definition
Pin No.
Item
Direction
Description
1
TO
output
Used to indicate the working status of the module; the user
wakes up the external MCU , and outputs a low level during
the initialization of the power-on self-test; (can be suspended)
2
VCC
enter
Power input 5.0V
3
M0
Input
( very weak pull-up )
Cooperate with M1 to determine the 4 working modes of the
module (not floating, if not used, it can be grounded)
4
GND
-
power reference ground
5
M1
Input
( very weak pull-up )
Cooperate with M0 to determine the 4 working modes of the
module (not floating, if not used, it can be grounded)
6
NC
-
-
7
NC
-
-
8
NC
-
-
9
GND
-
power reference ground
10
SWD_DI
O
input \ output
Program download data interface ( the module needs to be
reset or erased before SWD programming )
11
RXD
enter
TTL serial port input, connect external TXD output pin
12
SWD_CL
K
input \ output
Program download clock interface ( the module needs to be
reset or erased before SWD programming )
13
TXD
output
TTL serial port output, connect external RXD input pin

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14
NC
-
-
15
GND
-
power reference ground
16
NC
-
-
17
NC
-
-
18
GND
-
power reference ground
19
NC
-
-
20
NC
-
power reference ground
21
GND
-
power reference ground
22
RESET
enter
Input a high level module to enter the hardware reset state,
input a low level module to return to normal working state, this
function is used for reset operation in emergency
23
NC
-
-
24
VCC
enter
Power input 5.0V
25
NC
-
-
26
GND
-
power reference ground
27
GND
-
power reference ground
28
NC
-
-
29
GND
-
power reference ground
30
NC
-
-
31
NC
-
-
32
NC
-
-
33
NC
-
-
34
GND
-
power reference ground
35
GND
-
power reference ground
36
USB_D-
input \ output
D- of other external USB devices
37
GND
-
power reference ground
38
USB_D+
input \ output
D+ connected to other USB devices
39
VCC
enter
Power input 5.0V
40
GND
-
power reference ground
41
VCC
enter
Power input 5.0V
42
NC
-
-
43
GND
-
power reference ground
44
NC
-
-
45
RS232_R
XD
enter
External TXD of other RS232 devices
46
NC
-
-
47
RS232_T
XD
output
RXD connected to other RS232 devices
48
NC
-
-
49
RS485_A
input \ output
A terminal connected to other RS485 devices
50
GND
-
power reference ground
51
RS485_B
input \ output
Connect to the B terminal of other RS485 devices
52
VCC
enter
Power input 5.0V

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4 Recommended Connection Diagram
No
A brief description of the connection between the module and the microcontroller (the above figure takes
the STM8L microcontroller as an example)
1
The wireless serial port module is TTL level, please connect it with TTL level MCU .
2
For some 5V microcontrollers, it may be necessary to add 4 ~ 10K pull-up resistors to the TXD and
AUX pins of the module.
3
It is recommended to add a TVS diode before the power supply of the E22-230/400T33E module to
prevent the instantaneous voltage from being too high, thus burning the chip.

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5 Models
5.1 Fixed model
5.2 Broadcast model

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5.3 Broadcast address
Example: Set the address of module A to 0xFFFF , and the channel to 0x04 .
When module A is used as a transmitter (same mode, transparent transmission mode), all receiving modules under
the 0x04 channel can receive data to achieve the purpose of broadcasting.
5.4 Listening address
Example: Set the address of module A to 0xFFFF , and the channel to 0x04 .
When module A is used as a receiver, it can receive all the data under the 0x04 channel to achieve the purpose of
monitoring.
5.5 Module reset
After the module is powered on, AUX will immediately output low level, and perform hardware self-test, and set
the working mode according to user parameters; During this process, AUX keeps low level, and after the
completion, AUX outputs high level, and starts to work normally according to the working mode composed of M1
and M0 ; Therefore, the user needs to wait for the rising edge of AUX as the starting point for the normal operation
of the module.
5.6 Detailed explanation of AUX
AUX is used for wireless transceiver buffer indication and self-inspection indication.
It indicates whether the module has data that has not been transmitted through the wireless, or whether the received
wireless data has not been sent through the serial port, or the module is in the process of initializing self-test.
5.6.1 Serial port data output indication
Used to wake up the external MCU in sleep ;

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5.6.2 Wireless transmission indication
The buffer is empty: the data in the internal 1000 -byte buffer is written to the wireless chip (automatic
packetization);
When AUX=1 , the user continuously initiates data less than 1000 bytes, which will not overflow;
When AUX=0 , the buffer is not empty: the data in the internal 1000 -byte buffer has not been written into the
wireless chip and the transmission is started. At this time, the module may be waiting for the end of user data to time out,
or it is transmitting wireless packets. .
【Note 】: When AUX=1 , it does not mean that all the serial port data of the module have been transmitted
wirelessly, or the last packet of data may be being transmitted.
5.6.3 The module is being configured
Only when reset and exiting sleep mode.
5.6.4 Module power-on initialization process
' 1 ' in the figure: represents the initialization of the microcontroller peripherals (initialization time is 4-5ms );
In the figure, ' 2 ': represents the initialization of RF chip configuration parameters (initialization time is about
12ms );

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When the AUX pin is initialized, the pin will be pulled low for a short time due to the configuration of GPIO
peripherals, as shown in the figure below.
5.6.5 Module Mode Switching Process
The process of switching modes through M0 and M1 hardware:
M0 , M1 pin external interrupt trigger;
AUX pulls down the pin;
Exit the current task mode, and then read the M0 and M1 pin levels to judge the new mode;
Enter a new mode task, pull AUX high, and complete the mode switch (the maximum hardware mode switch time is
about 35ms ), note that the mode switch time will vary between different modes, for example, the time to switch
from sleep mode to other modes is relatively long, yes Because the MCU and RF chip are in a deep sleep state in
sleep mode, it is necessary to re-initialize the RF and MCU parameter configurations when entering other modes
from sleep.
Hardware mode switching AUX timin
Software mode switching AUX timing
Note: The software mode switching time will increase relative to the mode switching time due to the time required for
serial port data processing (switching time is about 45ms ).

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5.6.6 Precautions
No.
Notes on AUX
1
The above function 1 and function 2 , output low level priority, that is: meet any output low level condition,
AUX will output low level;
When all low-level conditions are not met, AUX outputs a high level.
2
When the AUX outputs a low level, it means the module is busy, and the working mode detection will not be
performed at this time;
When the module AUX outputs a high level within 1ms , the mode switching will be completed.
3
After the user switches to a new working mode, at least 2ms after the rising edge of AUX , the module will
actually enter this mode;
If AUX is always at high level, then the mode switch will take effect immediately.
4
When the user enters other modes from mode 3 (sleep mode) or during the reset process, the module will reset
the user parameters, during which AUX outputs low level.
5.7 Detailed Explanation of Wireless Sending and Receiving Instructions
It is used for wireless data sending and receiving processing instructions, and the flip frequency is 100ms
( according to the actual data size, airspeed, and baud rate, it may be pulled up or pulled down in advance if it is less
than 100ms );
It indicates whether the module has data that has not been transmitted through the wireless, or whether the wireless
data that has been received has not been sent out through the serial port.
Wireless data transmission TX_AUX timing
Note: The wireless data transmission TX_AUX starts to pull down after the serial port receives the data and the wireless
data packet is established (the flip frequency is 100ms ), and it does not flip until the RF data is sent, and keeps high.
Wireless data receiving RX_AUX timing
Note: The wireless data receiving RX_AUX starts to pull down 3-4ms before the serial port output data (the flipping

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frequency is 100ms ), and does not flip until the serial port outputs the wireless receiving data and keeps high level.
6 Working Mode
The module has four working modes, which are set by pins M1 and M0 ; the details are shown in the table below:
Mode ( 0-3 )
M1
M0
Mode introduction
Remark
0 Transfer
mode
0
0
Serial port open, wireless open, transparent transmission
Support special
command air
configuration
1 WOR mode
0
1
Can be defined as WOR sender and WOR receiver
Support air wake
2
Configuration
mode
1
0
Users can access the registers through the serial port to
control the working status of the module
It needs to be
configured at a baud
rate of 9600
3 Deep sleep
1
1
Module goes to sleep
Support software mode
switching function
6.1 Mode switching
Serial No.
Remark
1
The user can combine the high and low levels of M1 and M0 to determine the working mode of the
module. 2 GPIOs of MCU can be used to control mode switching;
After changing M1 and M0 : if the module is idle, it can start working in the new mode after 1ms ;
If the module has serial port data that has not been transmitted wirelessly, it can enter a new working mode
only after the transmission is completed;
If the module receives the wireless data and sends out the data through the serial port, it needs to send the
data before entering the new working mode;
So the mode switch can only be valid when the AUX output is 1 , otherwise the switch will be delayed.
2
For example: the user 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 user data
before performing new mode detection;
Therefore, the general suggestion is: detect the output state of the AUX pin, wait for 2ms after outputting a
high level, and then switch.
3
When the module is switched from other modes to sleep mode, if there is data that has not been processed;
The module will enter the sleep mode after processing the data (including receiving and sending). This
feature can be used for fast sleep to save power consumption; for example: the transmitter module works
in mode 0 , the user initiates the serial port data "12345" , and then does not have to wait for the AUX pin
to be idle (high level), it can directly switch to sleep mode, And the main MCU of the user will sleep
immediately, and the module will automatically enter the sleep within 1ms after sending all the user data
through wireless ;
thereby saving the working time of the MCU and reducing power consumption.

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4
Similarly, any mode switching can take advantage of this feature. After the module processes the current
mode event, it will automatically enter the new mode within 1ms ; thus saving the user from the work of
querying AUX and achieving the purpose of fast switching ;
For example, switch from transmitting mode to receiving mode; the user MCU can also go to sleep before
the mode switching, and use the external interrupt function to obtain AUX changes, so as to perform mode
switching.
5
This mode of operation is very flexible and efficient, designed completely according to the user 's MCU
operation convenience, and can reduce the workload of the entire system as much as possible, improve
system efficiency, and reduce power consumption.
6.2 General Mode (Mode 0)
Type
When M0 = 0 , M1 = 0 , the module works in mode 0
Emission
Users can input data through the serial port, and the module will start wireless transmission.
Take over
The wireless receiving function of the module is turned on, and the wireless data will be output through the TXD
pin of the serial port after receiving the wireless data.
6.3 WOR mode (Mode 1)
Type
When M0 = 1 , M1 = 0 , the module works in mode 1
Emission
When defined as the transmitter, the wake-up code for a certain period of time will be automatically added before
the launch
Take over
Data can be received normally, and the receiving function is equivalent to mode 0
6.4 Configuration Mode (Mode 2)
Type
When M0 = 0 , M1 = 1 , the module works in mode 2
Emission
radio off
Take over
wireless reception off
Configuration
User can access registers to configure module operating status

Chengdu Ebyte Electronic Technology Co.,Ltd. E22-xxxTxxE User Manual
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6.5 Deep Sleep Mode (Mode 3)
Type
When M0 = 1 , M1 = 1 , the module works in mode 3
Emission
Unable to transmit wireless data.
Take over
Unable to receive wireless data.
Notice
When entering other modes from sleep mode, the module will reconfigure the parameters. During the
configuration process, AUX remains low; the mode can be switched by software;
Output high level after completion, so it is recommended that users detect the rising edge of T_BUSY .
7 Register read and write control
7.1 Instruction format
In configuration mode (mode 2 : M1=1 , M0=0 ), the list of supported commands is as follows ( when setting, only 9600
and 8N1 formats are supported ):
No.
command
format
Detailed description
1
set register
Command: C0+ start address + length + parameter
Response: C1+ start address + length + parameter
Example 1 : Configure the channel as 0x09
Instruction start address length parameter
Send: C0 05 01 09
Returns: C1 05 01 09
Example 2 : Simultaneously configure module address ( 0x1234 ), network address
(0x00) , serial port (9600 8N1) , airspeed (2.4K)
Send: C0 00 04 12 34 00 62
Returns: C1 00 04 12 34 00 62
2
read register
Command: C1+ start address + length
Response: C1+ start address + length + parameter
Example 1 : Reading a channel
Instruction start address length parameter
Send: C1 05 01
Returns: C1 05 01 09
Example 2 : Simultaneously read module address, network address, serial port, and