Ebyte E49-400M20S Manuel utilisateur

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400M20S User Manual

E49-400M20S Usermanual

CMT2300A 433MHz/470MHz SMD Module

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400M20S User Manual

Contents

1. Overview.....................................................................................................................................................................3

1.1 Brief Introduction............................................................................................................................................. 4

1.2 Key Features..................................................................................................................................................... 4

1.3 Application........................................................................................................................................................4

2.0 Specification and Parameter..................................................................................................................................... 5

2.1 Limit parameter.................................................................................................................................................5

2.2 Working Parameters..........................................................................................................................................5

3.0 Size and pin definition.............................................................................................................................................. 6

4.0 Hardware and Software Notice.................................................................................................................................7

4.1 Hardware Notice...............................................................................................................................................7

4.2 Software Notice................................................................................................................................................ 7

5.0 Basic Circuit Diagram.............................................................................................................................................. 8

6.0 FAQ...........................................................................................................................................................................9

6.1 Communication range is too short....................................................................................................................9

6.2 Module is easy to damage................................................................................................................................ 9

6.3 BER(Bit Error Rate) is high............................................................................................................................. 9

7.0 Guide for Soldering work....................................................................................................................................... 10

7.1 Reflow soldering temperature........................................................................................................................ 10

7.2 Reflow soldering curve...................................................................................................................................10

8.0 Similar Products with CMT2300A.........................................................................................................................11

9.0 Recommendation for Antennas.............................................................................................................................. 11

Revision history............................................................................................................................................................ 12

About us........................................................................................................................................................................ 12

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400M20S User Manual

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.

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400M20S User Manual

1. Overview

1.1 Brief Introduction

E49-400M20S is a cost-effective wireless data transmission module launched by Chengdu

Ebyte. It is a pure hardware module based on CMT2300A.

E49-400M20S supports a maximum transmit power of 20dBm, and users can set a lower

output power to save power consumption. The module works in the 410MHz ~ 510MHz

frequency band, covering the commonly used 433MHz and 470MHz frequency bands.Since

this module is a pure RF transceiver module, it uses an SPI interface and requires an MCU

driver.

1.2 Key Features

The measured communication distance can reach 2.5km;

The maximum transmit power is 20dBm, and the software can be adjusted in multiple levels;

Support ISM 433MHz/470MHz frequency band;

Support data transmission rate from 0.5Kbps to 300Kbps;

Support low power consumption mode, suitable for battery applications;

Support GFSK modulation and OOK and (G)MSK;

Support 2.6V～3.6V power supply;

Industrial grade standard design, support long-term use at -40～85℃;

Support stamp hole and IPEX interface, users can choose to use according to their own needs.

1.3 Application

Smart home and industrial sensors, etc.;

Security system, positioning system;

Wireless remote control, UAV;

Wireless game remote control;

Healthcare products;

Wireless voice, wireless headset;

Automotive industry applications.

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400M20S User Manual

2.0 Specification and Parameter

2.1 Limit parameter

Table 2-1 Limit parameter table

Main parameter

Performance

Remark

Min.

Max.

Power supply（V）

3.6

Voltage over 3.6V will cause permanent

damage to module

Operating temperature（℃）

-40

2.2 Working Parameters

Table 2-2 Limit parameter table

Main parameter

Performance

Remark

Min.

Typ.

Max.

Operating voltage（V）

1.8

3.3

3.6

Over 3.6V may permanently burn the module

Communication level（V）

3.3

Using 5V level has the risk of burning

Operating temperature（℃）

-40

+85

Industrial grade

Operating frequency（MHz）

410

433

510

Power

consumptio

TX current（mA）

@Transm

it power

20dBm

Instant power consumption

RX current（mA）

8.5

Sleep current （μA）

0.1

Software is shut down

Max Tx power（dBm）

Receiving sensitivity（dBm）

-116

-117

-118

@Air rate is 1.2kbps

Main parameter

Description

Remark

Reference distance

2.5km

Clear and open, antenna height 2.5 meters, air rate 2.4kbps

Crystal frequency

26MHz

Packaging method

SMD

Communication Interface

SPI

Dimensions

20*14mm

RF interface

IPEX/stamp hole

Equivalent impedance is about 50Ω

product weight

1.2±0.1g

Clear and open, antenna height 2.5 meters, air rate 2.4kbps

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400M20S User Manual

3.0 Size and pin definition

Image 3-1 Mechanical Dimensions and Pin Definition

Chart 3-1 Pin definition table

No.

Name

Direction

Function

GND

Ground wire, connect to power reference ground

GND

Ground wire, connect to power reference ground

GND

Ground wire, connect to power reference ground

GND

Ground wire, connect to power reference ground

GPIO1

DI/O

Configurable multi-function IO port (see CMT2300A manual for details)

GPIO2

DI/O

Configurable multi-function IO port (see CMT2300A manual for details)

GPIO3

DI/O

Configurable multi-function IO port (see CMT2300A manual for details)

VCC

Module power supply, connect to power supply +3.3V

GND

Ground wire, connect to power reference ground

GND

Ground wire, connect to power reference ground

SCLK

SPI clock pin

SDIO

DI/O

SPI data pins

CSB

Chip select for SPI access register

FCSB

Chip select for SPI access to FIFO

GND

Ground wire, connect to power reference ground

GND

Ground wire, connect to power reference ground

ANT

Module RF stamp hole interface, equivalent impedance is about 50Ω

GND

Ground wire, connect to power reference ground

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400M20S User Manual

4.0 Hardware and Software Notice

4.1 Hardware Notice

It is recommended to use a DC stabilized power supply to supply power to the module. The power supply ripple coefficient is as

small as possible, and the module needs to be reliably grounded

Please pay attention to the correct connection of the positive and negative poles of the power supply, such as reverse connection

may cause permanent damage to the module;

Please check the power supply to ensure that it is between the recommended power supply voltage, if exceeding the maximum

value will cause permanent damage to the module;

Please check the power supply stability, the voltage cannot fluctuate significantly and frequently;

When designing the power supply circuit for the module, it is often recommended to reserve more than 30% of the margin, so

that the whole machine is conducive to long-term stable work;

The module should be as far away as possible from the 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 be avoided under the module. If it is

absolutely necessary to pass under the module, it is assumed that the module is soldered to the Top Layer, and copper is laid on

the Top Layer of the module contact part (all copper And well grounded), must be close to the digital part of the module and the

wiring is on the Bottom Layer;

Assuming that the module is soldered or placed on the Top Layer, it is also wrong to randomly route on 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 of the module. It is recommended to stay away from the module according to the intensity of the interference. If the

situation permits, proper isolation and shielding can be done;

It is assumed that there are traces with high electromagnetic interference around the module (high-frequency digital,

high-frequency analog, and power traces), which will greatly affect the performance of the module. It is recommended to stay

away from the module according to the intensity of the interference. Isolation and shielding;

Try to stay away from the TTL protocol which is also 2.4GHz in some physical layers, for example: USB3.0;

The antenna installation structure has a great impact on the performance of the module. Make sure that the antenna is exposed,

preferably vertically. When the module is installed inside the chassis, you can use high-quality antenna extension cords to extend

the antenna to the outside of the chassis;

The antenna must not be installed inside the metal shell, which will greatly weaken the transmission distance.

4.2 Software Notice

The chip of this module is CMT2300A, and its driving mode is SPI, and users can operate according to the CMT2300A chip

Datasheet.

GPIO1/GPIO2/GPIO3 are general-purpose I/O ports, see CMT2300A Datasheet for details.

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400M20S User Manual

5.0 Basic Circuit Diagram

Chart 5-1 circuit diagram

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400M20S User Manual

6.0 FAQ

6.1 Communication range is too short

The communication distance will be affected when obstacle exists.

Data lose rate will be affected by temperature, humidity and co-channel interference.

The ground will absorb and reflect wireless radio wave, so the performance will be poor when testing near ground.

Sea water has great ability in absorbing wireless radio wave, so performance will be poor when testing near the sea.

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

Power register was set incorrectly, air data rate is set as too high (the higher the air data rate, the shorter the distance).

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.

6.2 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 electrostatic 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.

6.3 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;

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400M20S User Manual

7.0 Guide for Soldering work

7.1 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

Average ramp-up rate(Tsmax to Tp)

Average ramp-up rate

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

Time 25℃ to peak temperature

Time to peak temperature for

25℃

max 6 minutes

max 8 minutes

7.2 Reflow soldering curve

Table des matières

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