Ebyte E220-900T30D User manual

(DN
EBYTE
E220-900T30D User Manual
868/915MHz 30dBm LoRa Wireless Module
Chengdu Ebyte Electronic Technology Co.,Ltd.

nO Chengdu Ebyte Electronic Technology Co., Ltd. E220-900T30D User Manual
Contents
Le OVE VIEW. octet eee ete ete t teehee eee tebe eae e meee he ee eames abe eh sense eheeR sense eRe eRe ones sake eRe ante ehe eRe ene eae ene eateries teens eae eneen 3
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LI ST: 111 (TT POSURE OTPRY 4
1.3 APPLICATION oc. 4
2. Specification and Parameter. ..... cocci eee seen 5
2.1 Limit parameter
2.2 Operating Parameter
3. Size and Pin DefINItion. ...........ooiiiic cece 6
4. Recommended Connection DIagram........c..cocooiiiiiiiiii ccc 7
5. FUNCHON DESCIIPHION. co... cette steeds estes teens eesti a 8
5.1 Fixed Transmission...
5.2 Broadcasting TraNSIISSION «cc... vires ee ees steeeteeaeseeseetee testes tebe eee see sbe ete ee estate see e ete ene nee ne eee ane ene ene ens 8
5.3 Broadcasting AdAIESS. ........c.oiiiiiiiiii cee eaten 9
5.4 MONTEOT AQAIESS. o.oo ect tebe theese sbeebs eee es 9
SS RISO. eee e eee Reese eee eee e eer e sean earns sree eee ere eee 9
5.6 AUX Description...
6. OPETAtING MOE... eee eee eens
6.1 MOAE SWITCRIIG. ceteris eee estefan tees t tebe eee besten beset eee eben eesti nee e ene ene a 11
6.2 Normal Mode (MOE 0) ..ouiiiiieie ieee seers eet eesti reste beret eter e eee see t arene seer eae s arene anes e ee enene enn 12
6.3 WOR sending mode (MOA 1)......uoiiiiiiciie cesses eee eee eee nese ns
6.4 WOR receiving mode (Mode 2)
6.5 Deep Sleep (Configuration) Mode (Mode 3)......ccooiiiiiiii cee 13
7 Register Read and WIite CONTIOL..... ooo ee sees 13
7.1 Command FOTMAT..........cooiiiiii ieee eee eben 13
7.2 REGISTOT DIESCIIPIION. ....... cutee seeded seeds teehee tea sheets esheets esas sees 14
7.3 Factory Default Parameter. ...........ccoioiiiiiiii iii ees 16
8. Configuration Instruction on COMPUTE .........ocoii iirc eens 17
9. HardWare DeSII.......c.oriiiiiieeie eens 18
10. FAQ ooo eee eee 19
10.1 Communication range 1S t00 SHOTT........iiiiiii irritate eee ane es 19
10.2 Module 1S €aSY 10 daa .........c.ciiiiiiiiiiii iis eens 19
10.3 BER (Bit Error Rate) 18 IG ......ooiiii eee eens 19
11. Soldering Operation GUIdANCE. ..........ccooiiiiiiii ices e eee eeee eee seee eee 20
11.1 Reflow Soldering Temperatlire. .........ccooviuiiiiiieieie cece eee 20
11.2 Reflow Soldering CUIVE......ccuiiiiiiii ieee eee eee eee eens eens 20
12. Related MOAELS. .......ouiiiiiiti debe a beeen 21
13. Antenna RecoOmMMENndAtiON. ............ioiiiiiiiiii iii ceeds sheets esse e sb beeea se be esa ene eneeea 21
13.1 Antenna ReCOMMENAAtION. ..........ooi iii eee eases seers 21
14. Package fOr BUIK Order. ........oooiiiiii ieee ee eee eee eens 22
REVISION HISIOTY co. oeieie cece 22
AADOUL LSet ehhh tee het hehe he E eh Eee heb eb e tebe teeth teeter aes 22
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Disclaimer and copyright notice
The information in this article, including the URL for reference, is subject to change
without notice. The document is provided "as is” without warranty of any kind, including
any warranty of merchantability, fitness for a particular purpose or non—infringement, and
any warranty of any proposal, specification or sample referred to elsewhere. This document
does not bear any liability, including any infringement of any patent rights resulting from
the use of the information contained in this document. No estoppel or other license, express
or implied, is granted herein for the use of intellectual property.
All the test data obtained in this paper are obtained by E-Baite laboratory, and the actual
results may be slightly different.
It is hereby declared that all trade names, trade marks and registered trade marks
mentioned herein are the property of their respective owners.
The right of final interpretation belongs to Chengdu Yibaite Electronic Technology Co.,
LTD.
The attention
The contents of this manual may change due to product version upgrade or other reasons. E-baite
Electronic Technology Co., Ltd. reserves the right to modify the contents of this manual
without any notice or prompt. This manual is only used as a guide, and Chengdu Yibaite
Electronic Technology Co., Ltd. makes every effort to provide accurate information in this
manual, but Chengdu Yibaite Electronic Technology Co., Ltd. does not guarantee that the
content of this manual is completely free of errors, and all statements, information and
Suggestions in this manual do not constitute any express or implied warranty.
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1.
Overview
1.1 Introduction
and a wireless serial port module (UART) designed based on the LLCCO68 chip
E220-900T30D adopts a new generation of LoRa spread spectrum technology
| 43mm |
scheme. It has a variety of transmission methods, works in the (850.125 ~ f |
930.125MHz) frequency band (default 873.125MHz), TTL level output, compatible E220-900T30D _ (0
with 3.3V and 5V 10 port voltage. £ SEY
E220-900T30D adopts a new generation of LoRa spread spectrum technology, £ v C €
supports air wake-up, carrier monitoring, communication key and other functions, ~N 3 sscurer cove EIN
supports sub-package length setting, and Ebyte provides customized development [Es or IALPLEZE0
Services.
1.2 Features
—_—
The new LoRa spread spectrum modulation technology developed based on LLCCGS, it brings a longer communication distance
and stronger anti-interference ability;
Support users to set the communication key by themselves, and it cannot be read, which greatly improves the confidentiality of
user data,
Support LBT function, monitor the channel environment noise before sending, which greatly improves the communication
success rate of the module in harsh environments,
Support RSSI signal strength indicator function for evaluating signal quality, improving communication network, and ranging;
Support air wakeup, that is, ultra-low power consumption function, suitable for battery-powered applications;
Support fixed-point transmission, broadcast transmission, channel monitoring,
Support deep sleep, the power consumption of the whole machine is about 5uA in this mode;
The module has built-in PA+LNA, and the communication distance can reach 10km under ideal conditions;
The parameters are saved after power-off, and the module will work according to the set parameters after power-on;
Efficient watchdog design, once an exception occurs, the module will automatically restart and continue to work according to the
previous parameter settings,
Support the data transmission rate of 2. 4k~62.5kbps,
Support 3.0~5.5V power supply, power supply greater than 5V can guarantee the best performance;
Industrial standard design, supporting long-term use at -40~+85°C,
SMA antenna interface.
.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;
Advanced Meter Reading Architecture (AMI);
Automotive industry applications.
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2. Specification and Parameter
2.1 Limit Parameter
Table 2-1 Limit parameter table
Performance
Main Parameter Remark
Min. Max.
Exceeding the maximum value may burn the
Power Supply (V) 0 5.5
module permanently
Blocking Power (dBm) - 10 -
Operating Temperature (°C) -40 +85 Industnal grade
2.2 Operating Parameter
Table 2-2 Working parameter table
Performance
Main Parameter Remark
Min. Typ. Max.
Operating voltage (V) 3.0 5 55 >5.0 V ensures output power
Communication level (V) - 33 - For 5V TTL, it may be burning down
Operating temperature (°C) -40 - +85 Industrial design
Operating frequency (MHz) 850.125 - 930.125 | Support ISM band
TX current(mA) - 620 - Instant power consumption @30dBm
Power
RX current (mA) - 17.2 - 5V Voltage
consumption
Sleep current (uA) - 5 - Software shutdown
Max Tx power (dBm) 205 30 30 -
Receiving sensitivity (dBm) -147 -148 Air data rate 2.4kbps
Air data rate (bps) 2.4k 62.5k To control via user’s program
Test condition : clear and open area, antenna
Distance for reference 10km gain: 5dBi1, antenna height: 2.5m, air data rate:
2. 4kbps
Can be configured via command as
TX length 200 Byte )
32/64/128/200 bytes per packet to transmit
Buffer 400 Byte -
Modulation LoRa New generation LoRa modulation technology
Communication interface UART Senal Port TTL Level
Package DIP -
Size 24*43mm -
Antenna SMA-K 50 ohm impedance
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3. Size and Pin Definition
Figure 3-1 Mechanical size and pin definition
Table 3-1 Pin definition table
No. Name Direction Function
) MO Input Work with M1 to decide 4 working modes of module (not suspended, if not
(weak pull-up) used, could be grounded).
5 MI Input Work with MO to decide 4 working modes of module (not suspended, if not
(weak pull-up) used, could be grounded).
3 RXD Input TTL UART inputs, connects to external TXD output pin.
4 TXD Output TTL UART outputs, connects to external RX input pin.
Used to indicate the working status of the module; the user wakes up the
5 AUX Output external MCU, and outputs low level during power-on self-check
initialization, (can be left floating)
6 VCC Input Voltage range: 3.0~5.5V DC
7 GND Input Ground
8 Fixed hole - Fixed hole
9 Fixed hole - Fixed hole
10 Fixed hole - Fixed hole
11 Fixed hole - Fixed hole
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4. Recommended Connection Diagram
Ul MCU
—125 pet PCO o——
: Fee id 16 1
——O PAOD PB6 O Q Mo
——0f Paz USART_RX 0 v% a RD | 8
—90 PA3 USART_TX O—~ p J TXD KE
— 9 vss PB4 O— SQ AUX 3
5 J VDD PB3 O——
— 9 PDO PB2 Br
———(O PRO PB1 O——
Figure 4-1 Recommended connection diagram
Table 4-1 Description
No. Brief description of the connection between the module and the MCU (the above figure uses the STMSL MCU
i as an example)
1 The wireless serial port module is TTL level, please connect with TTL level MCU.
2 For some 5V MCU, it may be necessary to add 4-10K pull-up resistors to the TXI> and AUX pins of the module.
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5. Function Description
5.1 Fixed Transmission
» AA BB CC
304
Address Channel
00 0304 AA BB CC
Target
address
Target
channel
Data
»
No
output
Address Channel
Address Channel
» No output
Address Ehiel
Figure 5-1 Fixed Transmission
5.2 Broadcasting Transmission
> AA BB CC
oom: ct
FF FF04 AA BB CC
Address
Channel
Data
—
>
AA
BB
CC
Address Channel 504
Address Channel
E=S
—» No output
' 06
Address Channel
Figure 5-2 Broadcasting Transmission
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5.3 Broadcasting Address
® Example: Set the address of module A to OXFFFF 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 Monitor Address
® For example: Set the address of module A as OxFFFF 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 is
realized.
5.5 Reset
® After the module 1s powered on, AUX will immediately output low level, perform hardware self-check, and set the working
mode according to user parameters, During this process, AUX keeps low level, and AUX outputs high level after completion,
and starts to work normally according to the working mode formed by M1 and MO; Therefore, the user needs to wait for the
rising edge of AUX as the starting point for the module to work normally.
5.6 AUX Description
® 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 through
UART, or whether the module is still in the process of self-check initialization.
5.6.1 Indication of UART Output
® To wake up external MCU
All the wireless data received have been
To wake up the external sent by TXD.(The buffer is actually empty.)
MCU 2-3ms in advance
14
a
me
TTT
——
a
Timing Sequence Diagram of AUX when TXD pin transmits
Figure 5-3 To wake up external MCU
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5.6.2 Indication of Wireless Transmitting
® Buffer empty: the data in the internal 400-byte buffer is written to the wireless chip (automatic sub-packaging),
When AUX=1, the user continuously initiates data less than 400 bytes without overflow,
When AUX=0, the buffer is not empty: the data in the internal 400-byte buffer has not been written to the wireless chip and the
transmission is turned on. At this time, the module may be waiting for the end of the user data to time out, or the wireless
sub-packet transmission is in progress;
[Note]: When AUX=1, it does not mean that all serial port data of the module has been transmitted wirelessly, and the last packet
of data may be being transmitted.
Subpackage transmitting : the last package of data have been
written to the RFIC. When transmission is on, user can continue
to input 400 new bytes. (The buffer is actually empty.)
0- RXD
1- TXD
2- AUX
Timing Sequence Diagram of AUX when RXD pin receives
Figure 5-4 Transmitting indication
5.6.3 Configuration Procedure of Module
® Only happened when power-on resetting or exiting sleep mode
The self-check procedure
happens when the procedure
of power-on reset, instruction
reset and exit mode 3.
Normal operation after self-check
Timing Sequence Diagram of AUX when self-check
Figure 5-5 Configuration mode
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5.6.4 Notes for AUX
Table 5-1 Notes for AUX
No. Description
For function 1 & function 2 mentioned above, the priority should be given to the one with low level output, which means if
1 it meets each of any low level output condition, AUX outputs low level, if none of the low level condition 1s met, AUX
outputs high level.
5 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.
3 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 affected immediately.
4 ‘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.
Due to the characteristics of the LoRa modulation method, the information transmission delay is much longer than FSK. It
5 is recommended that customers do not transmit large amounts of data at low airspeeds to avoid communication
abnormalities caused by data accumulation and data loss.
6. Operating Mode
There are four operating modes, which are set by M1 and MO, the details are as follows:
Mode (0-3) M1 MO Description Remark
0 Transmission 0 0 UART and wireless channel are open, transparent transmission is
Mode on
1 WOR
Transmitting 0 1 WOR Transmitter
Mode
2 WOR . .
Receiving Mode 1 0 WOR Receiver Supports wake up over air
3 Deep Sleep 1 1 Module goes to sleep (automatically wake up when configuring Supports configuration
Mode parameters)
6.1 Mode Switching
Table 6-1 Mode Switching
No. Remark
Users can combine M1 and MO 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 MO: If the module is idle, after ms, 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.
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® When the module is switched from other modes to sleep mode, if the data has not been processed vet,
® 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
3 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 lms;
® 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
4 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,
35 and can reduce the workload of the entire system as much as possible, improve system efficiency, and reduce power
consumption.
6.2 Normal mode (Mode 0)
Table 6-2 Normal mode
Type ‘When M0 = 0, M1 = 0, the module works in mode 0
Transmitting Users can input data through the serial port and the module will start wireless transmission.
The module wireless receiving function is turned on, and after receiving the wireless data, it will be output
Receiving through the senal port TXD pin.
6.3 WOR sending mode (Mode 1)
Table 6-3 WOR sending mode
Type ‘When M0 = 1, M1 = 1, the module works in mode 1
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.
6.4 WOR receiving mode (Mode 2)
Table 6-4 WOR receiving mode
Type ‘When M0 = 0, M1 = 1, the module works in mode 2
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Transmitting Wireless transmission off
Receiving Can only receive data in WOR transmission mode (mode 1)
6.5 Deep Sleep (Configuration) Mode (Mode 3)
Table 6-5 Sleep mode
Type ‘When M0 = 1, M1 = 1, the module works in mode 3
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.
7 Register Read and Write Control
7.1 Command Format
In configuration mode (mode 3: M1=1, M0=1), the supported command list is as follows (when setting, only 9600, 8N1 format is
supported):
Table 7-1 Command format
No Command Format Description
Command: CO+starting address+length+parameters
Response: Cl+starting address+length+parameters
Example 1: Channel is 0x09
command starting address length parameter
Send: CO 04 01 09
Return: Cl 04 01 09
Set Register
Example 2: Configure module address (0x1234), serial port (9600 8N1), air speed (2.4K)
Send: C000031234 62
Return: C100031234 62
Command: Cl+starting address+parameters
Response: Cl+starting address+length+parameters
Example : Read channel
Read Register command starting address length parameter
Send: Cl 04 01
Retum: Cl 04 01 09
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Send: C1 0003
Return: C1 0003 1234 62
Example 2: Read module address, serial port, and airspeed at the same time
Command: C2+starting address+parameters
Response: Cl+starting address+length+parameters
Example 1: Channel is 0x09
command starting address length parameter
Set Temporary Send: C2 04 01 09
3 Register Return: Cl 04 01 09
Example 2: Configure module address (0x1234), network address (0x00), serial port (9600 8N1)
and air data rate (2.4K)
Send: C200 031234 62
Return: C10003 12 34 62
4 ‘Wrong Format Wrong format respond: FF FF FF
7.2 Register Description
Table 7-2 Register description
Read
Address or Name Description Remark
Write
Read/ High byte and low byte of module address,
00H Wate | APPH | ADDH (default 0) Note: When the module address is equal to FFFF,
it can be used as the broadcast and monitor
01g Road ADDL | ADDL (default 0) address, that is: the module will not perform
rite
address filtering at this time
7 6 5 UART Serial Port Rate (bps) ) )
- For the two modules that communicate with each
0 0 0 UART Rate is 1200 other, the serial port baud rate can be different,
0 0 1 UART Rate is 2400 and the verification method can also be different;
0 1 0 UART Rate is 4800 When continuously transmitting large data
0 1 1 UART Rate is 9600 (default) packets, users need to consider the data
congestion caused by the same baud rate, and may
1 0 0 UART Rate is 19200 even be lost,
1 0 1 UART Rate is 38400
Read/ Aes It is generally recommended that the baud rate of
02H REGO 1 1 0 UART Rate is 57600 a. .
Write the two communication parties be the same.
1 1 1 UART Rate is 115200
4 3 Serial Parity Bit
0 0 8N1 (default)
The senal port mode of the communication parties
0 1 801
can be different;
1 0 8E1
1 1 8N1 (equal to 00)
2 1 0 Air Data Rate (bps) The air rate of both parties must be the same;
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0 0 0 Air Data Rate 2 4k The higher the air rate, the smaller the delay and
the shorter the transmission distance.
0 0 1 Air Data Rate 2 4k
0 1 0 Air Data Rate 24k (default)
0 1 1 Air Data Rate 4.8k
1 0 0 Air Data Rate 9.6k
1 0 1 Air Data Rate 19.2k
1 1 0 Air Data Rate 38.4k
1 1 1 Air Data Rate 62.5k
7 6 Sub-Packet Setting The data sent by the user is less than the
sub-packet length, and the serial port output of the
0 0 200 bytes (default) receiving end appears as an uninterrupted
0 1 128 bytes continuous output;
! v 64 bytes The data sent by the user is larger than the packet
| | 32 bytes length, and the serial port of the receiving end will
be output in packets.
5 RSSI Ambient noise enable After enabling, you can send commands CO C1
- C2 C3 in transmission mode or WOR sending
0 Disable (Default) mode to read registers;
Register 0x00: Current environmental noise RSS;
Register 0X01: RSSI when receiving data last
time
03H Read/ (The current channel noise is:dBm = - (256 -
} REGI RSSD ;
Write 1 Enable Instruction format: CO Cl C2 C3+start
addresstread length,
Return: C1 + address + read length + read valid
value, for example: send CO C1 C2 C3 00 01
Return C1 00 01 RSSI (address can only start
from 00)
4 3 2 Reserve
1 0 Transmitting Power The relationship between power and current is
0 0 30dBm (default) non-linear, and the power supply has the highest
m (default efficiency at maximum power;
0 1 27dBm
1 0 24dBm The current will not decrease in the same
1 1 21dBm proportion as the power decreases.
dH Read/ REG Channel Control (CH) Actual fi 450.125 + CH *1M
= +
Write 0-80 represents a total of 81 channels ctual frequency ‘
7 Enable RSSI Byte After being enabled, the module receives wireless
0 Disable (Default) data and outputs it through the serial port TXD,
1 Enable followed by an RSSI strength byte.
6 Transmission Method During fixed transmission, the module will
recognize the first three bytes of serial data as:
Read/ 0 Transparent transmission mode (default) address high + address low + channel, and use it
05H Writ REG3 1 Fixed transmission mode as a wireless transmission target.
rite
5 Reserve
4 LBT Enable After enabling, monitoring will be conducted
- before wireless data transmission, which can
0 Disable (default) avoid interference to a certain extent, but may
cause data delay;
1 Enable
The maximum stay time of LBT is 2 seconds, and
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CU Chengdu Ebyte Electronic Technology Co., Ltd. E220-900T30D User Manual
it will be issued forcibly when it reaches 2
seconds.
3 Reserve
2 1 0 | WOR Cycle
0 0 0 500ms Only valid for mode 1,
0 0 1 | 1000ms Cycle T= (1+WOR)*500ms, the maximum is
0 1 0 1500ms 4000ms, the minimum is 500ms;
0 1 1 2000ms The longer the WOR monitoring interval period,
1 0 0 | 2500ms the lower the average power consumption, but the
greater the data delay;
1 0 1 | 3000ms
Both transmitter and receiver must agree (very
1 1 0 | 3500ms important)
1 1 1 | 4000ms
} CRYPT } ‘Write only, read returns 0,
06H Write H Key high byte (default 0) Used for encryption to avoid interception of
— wireless data in the air by similar modules;
The module will use these two bytes as a
. CRYPT . .
07H Write L Key low byte (default 0) calculation factor to transform and encrypt the air
wireless signal.
7.3 Factory Default Parameter
Table 7-3 Default parameters
Model Factory default parameter; c0 00 00 62 00 17
Module No. Frequency Address Channel Air data rate Baud rate Serial format Power
E220-900T30D 873.125MHz 0x0000 0x17 2 4kbps 9600 8N1 30dbm
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8. Configuration Instruction on Computer
® The following figure shows the display interface of the E220-900T30D) configuration host computer. The user can switch to the
command mode through M0 and M1, and quickly configure and read the parameters on the host computer.
[3 e220 v1.0
REZ IER RF RIBERA
(@)
EBYTE chengdu Ebyte Electronic Technology Co.,Ltd.
B= E220
FEE 1.0
SEE: 433.125MHz
221 Oxc0 0x00 0x08 0x00 0x00 0x62 0x00 0x17 0x03 0x00 0x00
COM5
ERE
AME FR
BEE 9600bps ZEA EE a
THERES 8N1 = WORBEHH 2000ms ~~
ZRFRIEER 24Kbps EnThER 30dBm ~~
axial 200 Bytes ~
FREFTRET ARR EER FRE ARAERE
® [nthe configuration of the host computer, the module address, frequency channel, network 1D, and key are all displayed in
decimal mode; the value range of each parameter:
Network address: 0~65535
Frequency channel: 0~80
Key: 0~65535
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nO Chengdu Ebyte Electronic Technology Co., Ltd. E220-900T30D User Manual
9. Hardware Design
® [tis recommended to use a DC stabilized power supply to supply power to the module. The power ripple coefficient should be as
small as possible, and the module must be reliably grounded,
® Please pay attention to the correct connection of the positive and negative poles of the power supply. Reverse connection may
cause permanent damage to the module,
® Please check the power supply to ensure that it is within the recommended power supply voltage. If it exceeds the maximum
value, it will cause permanent damage to the module;
Please check the stability of the power supply, the voltage should not fluctuate greatly and frequently;
‘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 conducive to long-term stable operation;
® The module should be as far away as possible from power supply, transformer, high frequency wiring and other parts with large
electromagnetic interference,
® High-frequency digital traces, high-frequency analog traces, and power traces must avoid under the module. If they really need
to pass under the module, assuming that the module is soldered to the Top Layer, lay copper on the Top Layer of the contact part
of the module (all copper and Good grounding), must be close to the digital part of the module and routed in the Bottom Layer;
® Assuming that the module is soldered or placed on the Top Layer, it is also wrong to randomly route the wires on the Bottom
Layer or other layers, which will affect the stray and receiving sensitivity of the module to varying degrees;
® Assuming that there are devices with large electromagnetic interference around the module, it will greatly affect the performance
of the module. According to the intensity of the interference, it is recommended to stay away from the module. If the situation
permits, proper isolation and shielding can be done;
® Assuming that there are traces with large electromagnetic interference around the module (high-frequency digital,
high-frequency analog, power wiring), it will also greatly affect the performance of the module. According to the intensity of the
interference, it is recommended to stay away from the module. Isolation and shielding,
Try to stay away from part of the physical layer that is also 2.4GHz TTL protocol, such as: USB3.0,
The antenna installation structure has a great influence on the performance of the module. Make sure that the antenna 1s exposed
and it is best to be vertically upward,
® When the module is installed inside the case, a high-quality antenna extension cable can be used to extend the antenna to the
outside of the case;
® The antenna must not be installed inside the metal shell, which will greatly reduce the transmission distance.
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nO Chengdu Ebyte Electronic Technology Co., Ltd. E220-900T30D User Manual
10. FAQ
10.1 Communication range is too short
When there is a straight-line communication obstacle, the communication distance will be attenuated accordingly;
Temperature, humidity, and co-frequency interference will increase the communication packet loss rate,
The ground absorbs and reflects radio waves, and the test results near the ground are poor,
Sea water has a strong ability to absorb radio waves, so the seaside test results are poor;
If there is a metal object near the antenna or placed in a metal shell, the signal attenuation will be very serious,
The power register setting is wrong, the air speed setting 1s too high (the higher the air speed, the closer the distance),
The low voltage of the power supply at room temperature is lower than the recommended value, the lower the voltage, the lower
the power output,
The matching degree of the antenna and the module is poor or the quality of the antenna itself is problematic.
10.2 Module is easy to damage
Please check the power supply to ensure that it 1s within the recommended power supply voltage. If it exceeds the maximum
value, the module will be permanently damaged,
Please check the stability of the power supply, and the voltage should not fluctuate greatly and frequently,
Please ensure anti-static operation during installation and use, and high-frequency components are electrostatically sensitive;
Please ensure that the humidity during installation and use should not be too high, and some components are humidity sensitive
devices;
If there is no special requirement, it is not recommended to use it at too high or too low temperature.
10.3 BER (Bit Error Rate) 1s high
There is co-frequency signal interference nearby, stay away from the interference source or modify the frequency and channel to
avoid interference,
Unsatisfactory power supply may also cause garbled codes. Ensure the reliability of the power supply;
Poor or too long extension cables and feeders can also cause high bit error rates.
Copyright ©2012-2020, Chengdu Ebyte Electronic Technology Co.,Ltd. 19

59 Chengdu Ebyte Electronic Technology Co., Ltd. E220-900T30D User Manual
11. Soldering Operation Guidance
11.1 Reflow Soldering Temperature
Table 11-1 Register description
Profile Feature Sn-Pb Assembly Pb-Free Assembly
Solder Paste Sn63/Pb37 Sn96.5/Ag3/Cu0.5
Preheat Temperature min (Tsmin) 100°C 150°C
Preheat temperature max (Tsmax) 150°C 200°C
Preheat Time (Tsmin to Tsmax)(ts) 60-120 sec 60-120 sec
Average ramp-up rate(Tsmax to Tp) 3°C/second max 3°C/second max
Liquidous Temperature (TL) 183°C 217°C
Time (tL) Maintained Above (TL) 60-90 sec 30-90 sec
Peak temperature (Tp) 220-235°C 230-250°C
Aveage ramp-down rate (Tp to Tsmax) 6°C/second max 6°C/second max
Time 25°C to peak temperature 6 minutes max 8 minutes max
11.2 Reflow Soldering Curve
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