EBYTE E10-433MS 100mW SMD Wireless Module User Manual

: June 6, 2024
: ebyte

EBYTE E10-433MS 100mW SMD Wireless Module

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Overview

Brief introduction

E10-433MS is small SMD wireless module working at 433MHz developed based on chip SI4438 from Silicon Labs.
Due to the use of the imported SI4438 as the core of the module, its stability has been well received by users, and compatibility is not a concern. The module is aimed at smart home, wireless meter reading, scientific research and medical, and medium and long distance wireless communication equipment. Since RF performance and component selection are in accordance with industrial standards, and the product has obtained FCC, CE, RoHs and other international authoritative certification reports, users do not need to worry about its performance. With its stable and reliable characteristics, it is favored by the majority of users. Compared with the old products, it has made great progress in receiving current, receiving sensitivity, transmitting power, receiving rate range and anti interference ability. High precision 26MHz crystal is used. Since the module is a pure RF transceiver module, you need to use the MCU driver or a dedicated SPI debug tool.

Feature

Communication distance tested is up to 2k
Maximum transmission power of 100mW, software multi-level adjustable；
Support the global license-free ISM 433MHz band；
Support air date rate of 1.2kbps～1000kbps；
Support multiple modulation methods, (G)FSK, 4(G)FSK, (G)MSK OOK ；
Support 64/128 byte Transceiver Data Register (FIFO)
Support 2.5V~3.6V power supply, power supply over 3.3 V can guarantee the best performance；
Industrial grade standard design, support -40 ~ 85 °C for working over a long time；
SMA connector, good for connecting external antenna..

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.

Specification and parameter

Limit parameter

Main parameter	Performance	Remark
Min.	Max.
Power supply（V）	0	3.6

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

Operating parameter

Main parameter	Performance	Remark
Min.	Typ.	Max.
Operating voltage（V）	1.8	3.3
Communication level（V）		3.3
Operating temperature（℃）	-40	–
Operating frequency（MHz）	425	433
Power consumpti on	TX current（mA）
RX current（mA）		16
Sleep current （μA）		0.6
Max Tx power（dBm）	19	20
Receiving sensitivity（dBm）	-121	-122
Air data rate（bps）	0.123k	–
Main parameter	Description	Remark
---	---	---
Distance for reference	2000m	Test condition：clear and open area, antenna

Size and pin definition

No.	Name	Direction	Function
1	GND		Ground
2	VCC		Power supply ：1.8~ 3.6 V DC, 3.3V is recommended
3	GPIO0	output	GPIO（see more from SI4438 datasheet）
4	GPIO1	output	GPIO（see more from SI4438 datasheet）
5	IRQ	output	SPI interrupt request
6	SCK	input	Serial Clock Input
7	MISO	output	SPI master output slave input
8	MOSI	input	SPI master input slave output
9	nSEL	input	SPI Chip select for starting SPI communication
10	SDN		Shutdown Input Pin. It is low level when working (See SI4438 manual

Basic operation

Hardware design

It is recommended to use a DC stabilized power supply. 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 supply. 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 be fluctuated 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 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 routing, high-frequency analog routing, and power routing 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(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 interference. 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 2.4GHz , for example: USB3.0；
The mounting structure of antenna has a great influence on the performance of the module. It is necessary to 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 weakened.

Software editing

GPIO0 \ GPIO1 \ GPIO2 \ GPIO3 are configurable I/O ports for various application ，see more in SI4438datasheet.It can be floated when not used
IRQ pin can also be disconnected. The SPI query mode can be used to obtain the interrupt status. However, it is recommended to use the external interrupt of the MCU.
SPI communication rate should not be set too high, usually around 1Mbps.
Please refer to “Operating Modes and Timing” for SI4438 status switch，the switch between TX and RX should be
through Ready, can not be switched directly.
Re-initialize register configuration when the chip is idle for higher stability.
For controlling GPIO2 ,GPIO3 externally，pin status is as follows：
In tx mode：GPIO2 = 0; GPIO3 = 1;
In rx mode：GPIO2 = 1; GPIO3 = 0;
If the SI4438 is required to control itself, the mode of the configuration pins can be as follows when the program is initialized: SI44XX_GPIO_CONFIG( 0, 0, 32|0x40, 33|0x40, 0, 0, 0 );

Basic application

Basic circuit diagram

FAQ

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).
The power supply low voltage under room temperature is lower than 2.5V, the lower the voltage, the lower the transmitting power.
Due to antenna quality or poor matching between antenna and module

Module is easy to damage

Please check the power supply source, ensure it is 2.0V~3.6V, voltage higher than 3.6V will damage the module.
Please check the stability of power source, the voltage cannot fluctuate too much.
Please make sure antistatic measure are taken when installing and using, high frequency devices have electrostati susceptibility.
Please ensure the humidity is within limited range, some parts are sensitive to humidity.
Please avoid using modules under too high or too low temperature.

BER(Bit Error Rate) is high

There are co-channel signal interference nearby, please be away from interference sources or modify frequency and channel to avoid interference;
Poor power supply may cause messy code. Make sure that the power supply is reliable.
The extension line and feeder quality are poor or too long, so the bit error rate is high;

Production guidance

Reflow soldering temperature

Profile Feature| Curve characteristics| Sn-Pb Assembly| Pb- Free Assembly
---|---|---|---
Solder Paste| Solder paste| Sn63/Pb37| Sn96.5/Ag3/Cu0.5
Preheat Temperature min （Tsmin）| Min preheating temp.| 100℃| 150℃
Preheat temperature max (Tsmax)| Mx preheating temp.| 150℃| 200℃
Preheat Time (Tsmin to Tsmax)(ts)| Preheating time| 60-120 sec| 60-120 sec
Average ramp-up rate(Tsmax to Tp)| Average ramp-up rate| 3℃/second max| 3℃/second max
Liquidous Temperature (TL)| Liquid phase temp.| 183℃| 217℃
Time（tL）Maintained Above（TL）| Time below liquid phase line| 60-90 sec| 30-90 sec
Peak temperature（Tp）| Peak temp.| 220-235℃| 230-250℃
Aveage ramp-down rate（Tp to Tsmax）| Aveage ramp-down rate| 6℃/second max| 6℃/second max
Time 25℃ to peak temperature| Time to peak temperature for 25℃| max 6 minutes| max 8 minutes

Reflow soldering curve

E10 Series

Model No.| IC| Frequency (Hz)| Tx power (dBm)| Test distance km| Package| Antenna
---|---|---|---|---|---|---
E10-868MS30| SI4463| 868M| 30| 6| SMD| Stamp hole/IPEX
E10-915MS20| SI4463| 915M| 20| 2.5| SMD| Stamp hole/IPEX
E10-868MS20| SI4463| 868M| 20| 2.5| SMD| Stamp hole/IPEX
E10-433MS1W| SI4463| 433M| 30| 6| SMD| Stamp hole
E10-433MD3| SI4438| 433M| 20| 2| SMD| IPEX
E10-433MD-SMA| SI4463| 433M| 20| 2| DIP| SMA-K
E10-433MS| SI4438| 433M| 20| 2| SMD| Stamp hole

Antenna guidance

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 price.

Model No.| Type| Freque

ncy Hz

| Interface| Gain

dBi

| Height| Cable| Function feature
---|---|---|---|---|---|---|---
TX433-NP-4310| PCB| 433M| SMA-J| 2| 43.8*9.5mm| –| Built-in FPC antenna
TX433-JW-5| Rubber| 433M| SMA-J| 2| 50mm| –| Flexible &omnidirectional
TX433-JWG-7| Rubber| 433M| SMA-J| 2.5| 75mm| –| Flexible &omnidirectional
TX433-JK-20| Rubber| 433M| SMA-J| 3| 210mm| –| Flexible &omnidirectional
TX433-JK-11| Rubber| 433M| SMA-J| 2.5| 110mm| –| Flexible &omnidirectional
TX433-XP-200| Sucker| 433M| SMA-J| 4| 19cm| 200cm| Sucker antenna, High gain
TX433-XP-100| Sucker| 433M| SMA-J| 3.5| 18.5cm| 100cm| Sucker antenna, High gain
TX433-XPH-300| Sucker| 433M| SMA-J| 6| 96.5cm| 300cm| Big sucker antenna ultra high gain
TX433-JZG-6| Rubber| 433M| SMA-J| 2.5| 52mm| –| Short straight &omnidirectional
TX433-JZ-5| Rubber| 433M| SMA-J| 2| 52mm| –| Short straight &omnidirectional

Package method for bulk order

Revision history

Version	Date	Description	Issued by
1.00	2017/10/16	Initial version	huaa
1.10	2018/5/23	Content updated	huaa
1.20	2018/9/19	Model No. split	Huaa
1.30	2019/11/14		Ren
1.40	2021-7-8	Plan change	Linson

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