EBYTE E30-433T20D S14438 433MHz 100mW DIP Wireless Module User Manual

E30 433T20D User Manual
S14438 433MHz 100mW DIP Wireless Module
Chengdu Ebyte Electronic Technology Co., Ltd

Disclaimer

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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.

Overview

introduction

E30-433T20D is based on originally imported SI4438 from Silicon Labs, with transparent transmission available, TTL level output with air wake-up function, WOR (ultra-low power consumption). They feature half-duplex and SMD interfaces. 433M features low frequency, long wavelength, and strong ability of penetration and diffraction. They are applicable in the industrial and living environment like a plant or indoors.

The module features FEC (Forward Error Correction) the algorithm, which ensures its high coding efficiency & good correction performance. In the case of sudden interference, it can correct the interfered data packets proactively, so that the reliability & transmission range is improved correspondingly. But without FEC, those data packets can only be dropped.

E30-433T20D strictly follows design standards of FCC, CE, CCC and meets various RF certification requirements for exporting.

1.1 Features

• The communication distance tested is up to 5km
• The maximum transmission power of 100mW, software multi-level adjustable；
• Support the global license-free ISM 433MHz band；
• Support air date rate of 1kbps～25kbps；
• Low power consumption for battery supplied applications；
• Support 3V~5.2V power supply, power supply over 2.3V can guarantee the best performance；
• Industrial grade standard design, support -40 ~ 85 °C for working over a long time；
• SMA interface, easy connection of coaxial cable or external antenna

1.2  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

  Specification and parameter

2.1   Limit parameter

module
Blocking power（dBm）| –| 10| Chances of burn are slim when modules are used in short distance
Operating temperature（℃）| -40| 85|

2.1   Operating parameter

consumption
Receiving current [mA]| | 16| |
Turn-off current [μA]| | 4| | Software is shut down
Max Tx power（dBm）| 19.3| 20.0| 20.6|
Receiving sensitivity（dBm）| -120| -121| -122| Air data rate is 1.0kbps
Air data rate（bps）| 1k| 5k| 25k| Controlled via user’s programming
Main parameter| Description| Notes
---|---|---
Distance for reference| 2500m| Test condition： clear and open area, antenna gain: 5dBi， antenna height: 2.5m，air data rate: 1.0kbps
TX length| 58 Byte| Maximum capacity of a single package, automatic sub- packing after exceeding.
Buffer| 512 Byte|
Modulation| GFSK|
Communication interface| TTL| @3.3V
Package| DIP|
Connector| 2.54mm|
Size| 21 * 36 mm|
---|---|---
Antenna| SMA-K| 50-ohm impedance

2   Size and pin definition.

modes of the module (not suspended, if not used, could be grounded).
2| M1| Input （weak pull-up）| Work with M0 to decide 4 working modes of the module (not suspended, if not used, could be grounded).
3| **** RDX| Input| TTL UART inputs, connect to external (MCU, PC) TXD output pin. Can be configured as open-drain or pull-up input.

4

| ****

TXD

| ****

Output

| TTL UART outputs, connect to external RDX (MCU, PC) input pin. Can be configured as open-drain or push-pull output
---|---|---|---

5

| ****

AUX

| ****

Output

| To indicate the module’s working status & wake up the external MCU.

During the procedure of self-check initialization, the pin outputs a low level. Can be configured as a push-pull output (suspending is allowed).

6| VCC| Input| Power supply：2.3~ 5.5V DC
7| GND| Input| Ground
8| Fixed orifice| | Fixed orifice
9| Fixed orifice| | Fixed orifice
10| Fixed orifice| | Fixed orifice

   Connect to MCU

the TXD & AUX pin.

 Function description

2.1   Fixed transmission

2.1   Broadcasting transmission

2.1   Broadcasting address

• For example: Set the address of module A as 0xFFFF or 0x0000, and the channel as 0x04;
• When the module is the transmitter (transparent transmission), all modules under channel 0x04 will receive the data, the purpose of broadcast is

2.1   Monitor address

• 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 a monitor is

2.2   Reset

• When the module is powered, AUX outputs low level immediately, conducts hardware self-check, and sets the operating mode based on the user’s parameters. During the process, the AUX remains low level. After the process is completed, the AUX outputs a high level and starts to work as per the operating mode combined by M1 and M0. Therefore, users need to wait for the AUX rising edge as the start of the module’s normal
  2.3  AUX description

• AUX Pin can be used as an 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

2.3.1   Indication of UART output

• To wake up external MCU

2.1.1   Indication of wireless transmitting

• Buffer (empty): the internal 512 bytes of data in the buffer are written to the RFIC (Auto sub-packaging).
• When AUX=1, the user can input data less than 512 bytes continuously without overflow. Buffer (not empty): when AUX=0, the internal 512 bytes data in the buffer have not been written to the RFIC 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 subpackage.
• 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

2.1.1   Configuration procedure of module

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

2.1.1   Notes for AUX

1

| 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 conditions, AUX outputs a low level, if none of the low-level conditions is met, AUX outputs a high level.

2

| When AUX outputs a low level, it means the module is busy & cannot conduct operating mode checking. Within 1ms since AUX outputs a high level, the mode switch will be completed.

3

| After switching to the new operating model, 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.
---|---

4

| When the user switches to other operating modes from mode 3 (sleep mode) or it’s still in the reset process, the module will reset user parameters, during which AUX outputs a low level.

 Operating mode

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

1

|

0

| UART and wireless channels are open, the only difference with mode 0 is that before transmitting data, increasing the wake-up code automatically, so that it can awake the receiver under mode 3.| The receiver could be 0,1 or 2
2 Power saving|

0

|

1

| UART close, wireless is under the air-awaken mode, after receiving data, UART opens and sends data.| the transmitter must be mode 1, unable to transmit in this mode.
3 Sleep| 1| 1| sleep mode, receiving parameter setting command is available.| more details on parameter specification.

2.1  Mode switch

• The user can decide the operating mode by the combination of M1 and M0. The two GPIO of MCU can be used to switch modes. After modifying M1 or M0, it will start to work in a new mode 1ms later if the module is free. If there are any serial data that is yet to finish wireless transmitting, it will start to work in the new model after the UART transmitting is finished. After the module receives the wireless data & transmits the data through a serial port, it will start to work in a new model after the transmitting is finished. Therefore, the mode-switch is only valid when AUX outputs 1, otherwise, it will

• For example, in mode 0 or mode 1, if the user inputs massive data consecutively and switches operating mode at the same time, the mode-switch operation is invalid. New mode checking can only be started after all the user’s data process is completed. It is recommended to check AUX pin out the status and wait 2ms after AUX outputs high level before switching the

• If the module switches from other modes to standby mode, it will work in standby mode only after all the remained data process completed. The feature can be used to save power consumption. For example, when the transmitter works in mode 0 after the external MCU transmits data “12345”, it can switch to sleep mode immediately without waiting for the rising edge of the AUX pin, also the user’s main MCU will go dormancy Then the module will transmit all the data through wireless transmission & go dormancy 1ms later automatically, which reduces MCU working time & save power.

• Likewise, this feature can be used in any mode switch. The module will start to work in new mode within 1ms after completing the present mode task, which enables the user to omit the procedure of AUX inquiry and switch-mode For example when switching from transmitting mode to receiving mode, the user MCU can go dormancy before mode-switch, using external interrupt function to get AUX change so that the mode-switch can be realized.

• This operation is very flexible and efficient. It is totally designed on the basis of the user MCU’s convenience, at the same time the workload and power consumption of the whole system has been reduced and the efficiency of the whole system is largely

2.1       Normal mode (mode 0)

| When M1 = 0 & M0 = 0, module works in mode 0
---|---
Transmitting| The module can receive the user data via serial port, and transmit a wireless data package of 58 bytes. When the data inputted by the user is up to 58 bytes, the module will start wireless transmission. During which the user can input data continuously for transmission.
When the required transmission bytes are less than 58 bytes, the module will wait a 3-byte time and treat it as data termination unless continuous data is inputted by the user. Then the module will transmit all the data through a wireless channel.
When the module receives the first data packet from the user, the AUX outputs a low level.
After all the data are transmitted into the RF chip and transmission start, AUX outputs a high level.|
At this time, it means that the last wireless data package transmission is started, which enables the user to input another 512 bytes continuously. The data package transmitted from the module working in mode 0 can only be received by the module working in mode 0 or 1.
Receiving| The wireless receiving function of the module is on, the data packet transmitted from the module working in mode 0 & mode 1 can be received
After the data packet is received, the AUX outputs a low level, 5ms later the module starts to transmit wireless data through serial port TXD pin.
After all the wireless data have been transmitted via serial port, the AUX outputs a high level.

2.1   Wake-up mode (mode 1)

| When M1 = 0 & M0 = 1, module works in mode 1
---|---
Transmitting| The condition of data packet transmission & AUX function is the same as mode 0. The only difference is that the module will add preamble code before each data packet automatically. The preamble code length depends on the wake-up time set in the user parameters. The purpose of the preamble code is to wake up the receiving module working in mode 2. Therefore, the data package transmitted from mode 1 can be received by mode 0, mode1, and mode 2.
Receiving| The same as that in mode 0.

2.2   Power-saving mode (mode 2)

| When M1 = 1 & M0 = 0, module works in mode 2
---|---
Transmitting| UART is closed, the module cannot receive any serial port data from outside MCU.
Hence the function of wireless transmission is not available for the module working in this mode.
Receiving| In mode 2, it is required the data transmitter work in mode 1. The wireless module monitors the preamble code at a regular time.
Once it gets the preamble code, it will remain as receiving status and waiting for the completion of receiving the entire valid data package.
Then the AUX outputs a low level, 5ms later the serial port is open to transmit received wireless data through TXD. Finally, AUX outputs a high level after the process is completed.
The wireless module stays in “power-saving – monitoring” working status (polling).
By setting different wake-up times, the module will have different receiving response delays (2s in maximum) and average power consumption (30uA in minimum).
The user needs to achieve a balance between communication delay time & average power consumption.
---|---

2.1   Sleep mode (mode 3)

| When M1=1, M0=1, module works in mode 3
---|---
Transmitting| N/A
Receiving| N/A
Parameter setting| This mode can be used for parameter setting. It uses serial ports 9600 & 8N1 to set module working parameters through specific instruction formats. (pls refer to parameters setting for details)
Notes| When the mode changes from standby mode to others, the module will reset its parameters, during which the AUX keeps a low level and then outputs a high level after the reset is completed. It is recommended to check the AUX rising edge for users.

Command format

In sleep mode（Mode 3：M1=1, M0=1）, it supports the below instructions on the list. (Only support 9600 and 8N1 format when setting)

1

| C0+working parameters| C0 + 5 bytes working parameters are sent in hexadecimal format. 6 bytes in total and must be sent in succession, ( Save the parameters when power-down ).
2| C1+C1+C1| ( Save the parameters when power-down )
3| C2+working parameters| Three C1 are sent in hexadecimal format. The module returns the saved parameters and must be sent in succession.
4| C3+C3+C3| C2 + 5 bytes working parameters are sent in hexadecimal format. 6 bytes in total and must be sent in succession. ( Do not save the parameters when power-down )
5| C4+C4+C4| Three C3 are sent in hexadecimal format. The module returns the version information and they must be sent in succession.

Default parameters

Transmitting g power
E30-433T20D| 433MHz| 0x0000| 0x50| 1kbps| 9600| 8N1| 100mW

Reading operating parameters

User gives the module instruction (HEX format): C1 C1 C1, Module returns the present configuration parameters.
For example, C0 00 00 1A 17 44.

Reading version number

format): C3 C3 C3, Module returns its present version number, for example, C3 32 xx yy. the second byte means frequency. 32 here means the frequency is 433MHZ, 38 means frequency is 470MHz, 45 means frequency is; 868MHz, 44 means the frequency is 915 MHz, 46 means the frequency is 170MHz; xx is the version number and yy refers to the other module features.

Reset command

User gives the module instruction (HEX format): C4 C4 C4, the module resets for one time. During the reset process, the module will conduct a self-check, AUX outputs low level. After reset completing, the AUX outputs a high level, then the module starts to work regularly which the working mode can be switched or be given another instruction.

Parameter setting command

Must be 0xC0 or 0xC2
C0: Save the parameters when power-down
C2: Do not save the parameters when power-down
1| ADD| High address byte of module （the default 00H）| 00H-FFH
---|---|---|---
2| ADD| Low address byte of module （the default 00H）| 00H-FFH
3| SPED| 7| 6| UART parity bit| l  UART mode can be different between communication parties
0| 0| 8N1 (default)
0| 1| 8O1
1| 0| 8 E1
1| 1| 8N1 (equal to 00)
5| 4| 3| TTL UART baud rate（bps）| l  UART baud rate can be different between communication parties

l  The UART baud rate has nothing to do with wireless transmission parameters & won’t affect the wireless transmit/receive features.

0| 0| 0| 1200
0| 0| 1| 2400
0| 1| 0| 4800
0| 1| 1| 9600 (default)
1| 0| 0| 19200
1| 0| 1| 38400
1| 1| 0| 57600
1| 1| 1| 115200
2| 1| 0| Air data rate（bps）| l  The lower the air data rate, the longer the transmitting distance, better anti-interference  performance, and longer transmitting time

l  The air data rate must keep the same for both communication parties.

0| 0| 0| 1k
0| 0| 1| 2k
0| 1| 0| 5k (default)
0| 1| 1| 8k
1| 0| 0| 10k
1| 0| 1| 15k
1| 1| 0| 20k
1| 1| 1| 25k
4| CHAN| 7| 6| 5| reserved| Write 0
Communication channel| 00H-FFH, correspond to 425 ~ 450.5MHz
4 ~ 0, channel (425M + CHAN * 0.1M) , default 50H (433MHz)
5| OPTIO N| 7| Fixed transmission enabling bit（similar to MODBUS）| l  In fixed transmission mode, the first three bytes of each user’s data frame can be used as high/low address and channel. The module changes its address and channel when transmit. And it will revert to the original setting
0| Transparent transmission mode
1| Fixed transmission mode
| | | | after completing the process.
---|---|---|---|---
6| IO drive mode (default 1)| l   This bit is used for the module internal pull-up resistor. It also increases the level’s adaptability in case of an open drain. But in some cases, it may need an external pull-up resistor.
1| TXD and AUX push-pull outputs, RDX pull-up inputs
0| TXD、AUX open-collector outputs, RDX open-collector inputs
5| 4| 3| wireless wake-up time| l  The transmit & receive module works in mode 0, whose delay time is invalid & can be an arbitrary value.

l  The transmitter works in mode 1 can transmit the preamble code of the corresponding time continuously.

l  When the receiver works in mode 2, the time means the monitor interval time (wireless wake-up). Only the data from a transmitter that works in mode 1 can be received.

0| 0| 0| 250ms (default)
0| 0| 1| 500ms
0| 1| 0| 750ms
0| 1| 1| 1000ms
1| 0| 0| 1250ms
1| 0| 1| 1500ms
1| 1| 0| 1750ms
1| 1| 1| 2000ms
2| FEC switch| l  After turning off FEC, the actual data transmission rate increases while anti-interference ability decreases. Also, the transmission distance is relatively short.

l   Both communication parties must keep on the same pages about turn-on or turn-off FEC.

0| Turn off FEC
1| Turn on FEC (default)
1| 0| Transmission power (approximation)| The external power must make sure the ability of current output is more than 400mA and ensure the power supply ripple within 100mV.
Low power transmission is not recommended due to its low power supply efficiency.
1| 0| Transmission power (approximation)
0| 0| 20dBm(default)
0| 0| 17dBm
0| 1| 14dBm
1| 0| 10dBm
For example The meaning of No.3 “SPED” byte:
The binary bit of the byte| 7| 6| 5| 4| 3| 2| 1| 0
Configures by user| 0| 0| 0| 1| 1| 0| 1| 0
Meaning| UART parity bit 8N1| UART baud rate is 9600| Air data rate is 2.4k
Corresponding hexadecimal| 1| A

 Hardware design

• It is recommended to use a DC stabilized power The power supply ripple factor 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 Reverse connection may cause permanent damage to the module；
• Please check the power supply to ensure it is within the recommended voltage otherwise when it exceeds the maximum value the module will be permanently damaged；
• Please check the stability of the power supply, the voltage can not fluctuate frequently；
• When designing the power supply circuit for the module, it is often recommended to reserve more than 30% of the margin, so the whole machine is beneficial for long-term stability；
• The module should be as far away as possible from the power supply, transformers, high-frequency wiring, and other parts with large electromagnetic ；
• High-frequency digital routing, high-frequency analog routing, and power routing must be avoided under the 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；
• Assuming the module is soldered or placed over the Top Layer, it is wrong to randomly route over the Bottom Layer or other layers, which will affect the module’s spurs and receiving sensitivity to varying degrees；
• It is assumed that there are devices with large electromagnetic interference around the module that will greatly affect the performance. It is recommended to keep them away from the module according to the strength of the If necessary, appropriate isolation and shielding can be done；
• Assume that there are traces with large electromagnetic interference (high-frequency digital, high-frequency 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.
• 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 such as TTL protocol at 4GHz, for example, USB3.0；
• The mounting structure of the antenna 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；
• The antenna must not be installed inside the metal case, which will cause the transmission distance to be greatly

FAQ

9.1   Communication range is too short

• The communication distance will be affected when an obstacle

• Data loss rate will be affected by temperature, humidity, and co-channel

• The ground will absorb and reflect wireless radio waves, so the performance will be poor when testing near

• Seawater has a great ability in absorbing wireless radio waves, so performance will be poor when testing near the

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

• The power register was set incorrectly, the 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 5V, the lower the voltage, the lower the transmitting power.

• Due to antenna quality or poor matching between antenna and module.
  9 .2   Module is easy to damage

• Please check the power supply source, ensure it is 0V~3.6V, a voltage higher than 3.6V will damage the module.

• Please check the stability of the power source, the voltage cannot fluctuate too

• Please make sure antistatic measures are taken when installing and using, high-frequency devices that have electrostatic

• Please ensure the humidity is within a limited range, some parts are sensitive to

• Please avoid using modules under too high or too low
  9.3   BER(Bit Error Rate) is high

• There is co-channel signal interference nearby, please be away from interference sources or modify frequency and channel to avoid interference;

• The poor power supply may cause a messy 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;

 Production guidance

This type is a full-sized module, when the welder welds the module, he must be welding according to the anti-static regulation. This product is allergic to static, randomly welding the module will have the chance of damaging it permanently.

E30 series

**Model No.| Core IC| Frequency Hz| Tx power dBm| Distance km| Air Data Rate| ****Package| Size mm| ****Interface*
---|---|---|---|---|---|---|---|---
E30-433T20S3| SI4438| 433M| 20| 2.5| 1k~25k| SMD| 16 26| IPEX/External
E30-780T20S| SI4463| 780M| 20| 2.5| 1k~25k| 贴片SMD| 17 30| IPEX/External/Spring
E30-868T20D| SI4463| 868M| 20| 2.5| 1k~25k| 直插 DIP| 21 36| SMA-K
E30-868T20S| SI4463| 868M| 20| 2.5| 1k~25k| 贴片SMD| 17 30| IPEX/External/Spring
E30-170T27D| SI4463| 170M| 27| 5| 1k~25k| DIP| 24 43| SMA-K
E30-170T20D| SI4463| 170M| 20| 2| 1k~25k| DIP| 21 36| SMA-K
E30-915T20S| SI4463| 915M| 20| 2.5| 1k~25k| SMD| 17 30| IPEX/External/Spring
E30-915T20D| SI4463| 915M| 20| 2.5| 1k~25k| DIP| 21 36| SMA-K
E30-490T20S| SI4438| 490M| 20| 2.5| 1k~25k| SMD| 17 30| IPEX/External/Spring
E30-490T20D| SI4438| 490M| 20| 2.5| 1k~25k| DIP| 21 36| SMA-K
E30-433T20S| SI4438| 433M| 20| 2| 1k~25k| SMD| 17 30| IPEX/External/Spring
E30-433T20D| SI4438| 433M| 20| 2| 1k~25k| DIP| 21 * 36| SMA-K

Antenna recommendation

The antenna is an important role in the communication process. A good antenna can largely improve the communication system. Therefore, we recommend some antennas for wireless modules with excellent performance and reasonable prices.

Model No.| Type| Frequency Hz| Interface| Gain dBi| Height| Cable| Function Feature
---|---|---|---|---|---|---|---
TX433-NP-4310| Soft PCB antenna| 433M| SMA-J| 2| 43.8*9.5mm|

–

| Built-in flexible, FPC of antenna.
TX433-JW-5| Rubber antenna| 433M| SMA-J| 2| 50mm| –| Flexible &omnidirectional
TX433-JWG-7| Rubber antenna| 433M| SMA-J| 2.5| 75mm| –| Flexible &omnidirectional
TX433-JK-20| Rubber antenna| 433M| SMA-J| 3| 210mm| –| Flexible &omnidirectional
TX433-JK-11| Rubber antenna| 433M| SMA-J| 2.5| 110mm| –| Flexible &omnidirectional
TX433-XP-200| Sucker antenna| 433M| SMA-J| 4| 19cm| 200cm| Sucker antenna, High gain
TX433-XP-100| Sucker antenna| 433M| SMA-J| 3.5| 18.5cm| 100cm| Sucker antenna, High gain
TX433-XPH-300| Sucker antenna| 433M| SMA-J| 6| 96.5cm| 300cm| A car carrying Sucker antenna, High gain
TX433-JZG-6| Rubber antenna| 433M| SMA-J| 2.5| 52mm| –| Short straight &omnidirectional
TX433-JZ-5| Rubber antenna| 433M| SMA-J| 2| 52mm| –| Short straight &omnidirectional

 Package for batch order

Revision history

Version

| Date| Description|

Issued by

---|---|---|---
1.00| 2017-11-17| Original version| huaa
1.20| 2018-01-29| Type merging| huaa
1.30| 2018-10-17| New added type| huaa
1.40| 2020-7-10| | Li
1.50| 2021-5-7| Upgrade to optimize| Linson

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
Web: www.ebyte.comFax: 028-64146160 ext. 821
Address: Innovation Center D347, 4# XI-XIN Road, Chengdu, Sichuan, China

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