Ebyte E49-400M30S Manuale utente

E49-400M30S User Manual

CMT2300A 433/470MHz Chip Hardware Wireless Module

Contents

Disclaimer...............................................................................................................................................................................2

Features...........................................................................................................................................................................3

Chapter 1 Overview................................................................................................................................................................4

1.1 Brief introduction..................................................................................................................................................... 4

1.2 Application................................................................................................................................................................4

Chapter 2 Specification & parameter..................................................................................................................................... 5

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

2.2 Operating parameter................................................................................................................................................. 5

Chapter 3 Size and pin definition........................................................................................................................................... 6

Chapter 4 Basic operation.......................................................................................................................................................7

4.1 Hardware design....................................................................................................................................................... 7

4.2 Programming............................................................................................................................................................ 8

Chapter 5 Basic application....................................................................................................................................................9

5.1 Hardware design & schematics................................................................................................................................ 9

Chapter 6 FAQ........................................................................................................................................................................9

6.1 Transmission distance...............................................................................................................................................9

6.2 Module damage...................................................................................................................................................... 10

6.3 Bit error.................................................................................................................................................................. 10

Chapter 7 Welding instruction.............................................................................................................................................. 11

7.1 Reflow soldering temperature................................................................................................................................ 11

7.2 Reflow soldering curve...........................................................................................................................................11

Chapter 8 E49 series.............................................................................................................................................................12

Chapter 9 Antenna recommendation.................................................................................................................................... 12

9.1 Recommendation.................................................................................................................................................... 12

Revision history....................................................................................................................................................................13

About us................................................................................................................................................................................13

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400M30S User Manual

Disclaimer

EBYTE reserves all rights to this document and the information contained herein.

Products, names, logos and designs described herein may in whole or in part be

subject to intellectual property rights. Reproduction, use, modification or disclosure to

third parties of this document or any part thereof without the express permission of

EBYTE is strictly prohibited.

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.

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400M30S User Manual

Features

The measured communication distance can reach 5.5km;

Maximum transmitting power 1W, multi-level adjustable;

Support global license-free ISM 433MHz band;

Support data transmission rate between 0.5Kbps ~ 300Kbps;

Supports low power mode, suitable for battery;

Supports GFSK modulation and OOK,(G)MSK;

Support 3.3V~5.5V power supply;

Industrial standard design, support -40 ~ 85°C long time operating;

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

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400M30S User Manual

Chapter 1 Overview

1.1 Brief introduction

E49-400M30S is a super cost-effective wireless data transmission module

launched by Chengdu YIBEST. It is a hardware module based on CMT2300A.

Customers can develop and use it according to the working environment and

the application conditions of MUC.

E49-400M30S supports a maximum transmission power of 30dBm, and

users can set a lower output power to save consumption. The module works in

433/470MHz frequency band. It features small size and low power

consumption.

Because this module is a pure RF transceiver module, you need to use

MCU drive or specialized SPI debugging tools

1.2 Application

Smart home and industrial sensors;

Security system, positioning system;

Wireless remote control, UAV;

Wireless game remote control;

Healthcare products;

Wireless microphones, wireless headphones；

Automotive industry applications.

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400M30S User Manual

Chapter 2 Specification & parameter

2.1 Limit parameter

Main parameters

Performance

Remark

minimum

maximum

power supply voltage（V）

5.5

Permanently burn modules over

5.5V

Blocking power（dBm）

The burn rate is low when used at

close range

Working temperature（℃）

-40

+85

Industrial-grade

2.2 Operating parameter

Main parameters

Performance

Remark

minimu

typical

maximu

Working voltage（V）

3.3

5.5

＞5.5V Can cause permanent module

damage

communication level（V）

3.3

Working temperature（℃）

-40

+85

Industrial-grade

Working frequency（MHz）

410

433

510

Power

consumpti

Emission current（mA）

650

Receive current（mA）

Sleep current（μA）

Maximum transmitting power（dBm）

Receiving sensitivity（dBm）

-121

-122

-123

The air rate 1.2kbps

Main parameters

Description

Remark

Reference range

5.5kM

Clear & empty，Antenna height 2.5m，data rate 2.4kbps

FOSC

26MHz

package

SMD

Communication interface

SPI

Dimensions

24*38.5mm

radio frequency interface

Stamp hole/IPEX

equivalent impedance about 50Ω

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400M30S User Manual

Chapter 3 Size and pin definition

number

Item

Pin direction

Pin purpose

GND

Ground

GND

Ground

GND

Ground

GND

Ground

GND

Ground

RXEN

input

RF switch receiving control pin, connected to external MCU IO, high

level effective

TXEN

input

RF switch receiving control pin, connected to external MCU IO, high

level effective

GPIO3

Input/output

Configurable general IO port (see CMT2300A manual for details)

VCC

Power supply, range 3.3 ~ 5.5V (external ceramic filter capacitor is

recommended)

VCC

Power supply, range 3.3 ~ 5.5V (external ceramic filter capacitor is

recommended)

GND

Ground

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400M30S User Manual

GND

Ground

GPIO2

Input/output

Configurable general IO port (see CMT2300A manual for details)

GPIO1

Input/output

Configurable general IO port (see CMT2300A manual for details)

FCSB

input

SPI accesses FIFO slice selection

CSB

input

SPI accesses FIFO slice selection

SDIO

Input/output

SPI data input and output

SLCK

input

SPI clock pin

GND

Ground

ANT

Antenna interface, stamp hole (50Ω characteristic impedance)

GND

Ground

Chapter 4 Basic operation

4.1 Hardware design

DC regulated power supply is recommended to power the module, the ripple coefficient of the power supply should

be as small as possible, and the module should be reliably grounded;

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

reverse connection may cause permanent damage to the module;

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

value is exceeded, it will cause permanent damage to the module;

Please check the stability of the power supply. The voltage should not fluctuate greatly and frequently;

In the design of power supply circuit for modules, it is often recommended to retain more than 30% of the

allowance, which is conducive to long-term and stable work;

The module should be far away from the power supply, transformers, high-frequency wiring and other parts with

greater electromagnetic interference;

High-frequency digital wiring, high-frequency analog wiring and power wiring must avoid the Bottom Layer of the

module. If it is really necessary to pass through the Bottom Layer of the module, assuming that the module is

welded on the Top Layer, the Top Layer in the contact part of the module must be copper paved (all copper paved

and well grounded), close to the digital part of the module and wire in the Bottom Layer;

It is also a mistake to assume that modules are soldered or placed in the Top Layer, and that random wiring in the

Bottom Layer or other layers will affect module stray and reception sensitivity to varying degrees;

If there are devices with large electromagnetic interference around the module, 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 appropriately. If the situation permits, appropriate isolation and shielding can be done;

If there are wires (high frequency digital, high frequency analog, power supply wiring) around the module that have

large electromagnetic interference, 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 appropriately. If the situation permits,

appropriate isolation and shielding can be done;

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400M30S User Manual

Try to stay away from part of the TTL protocol which is also 2.4GHz physical layer，such as USB3.0;

Antenna installation structure has a great impact on module performance, be sure to ensure that the antenna is

exposed, preferably vertical upward. When the module is installed inside the housing, the antenna can be extended

to the outside of the housing by using the high quality antenna extension cord;

Antenna must not be installed inside the metal shell, will lead to the transmission distance greatly weakened.

4.2 Programming

This module is CMT2300A, and its drive mode is SPI. Users can operate in accordance with the CMT2300A chip

book;

GPIO1/GPIO2/GPIO3 is a general I/O port, see CMT2300A manual for detail

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400M30S User Manual

Chapter 5 Basic application

5.1 Hardware design & schematics

Chapter 6 FAQ

6.1 Transmission distance

When there is a linear communication barrier, the communication distance will decay accordingly;

Temperature, humidity and the same frequency interference will lead to the increase of communication packet loss

rate;

The ground absorbs and reflects radio waves, and the test results are poor near the ground;

Sea water has a strong ability to absorb radio waves, so the seaside test results are poor;

If there are metal objects near the antenna or placed in a metal shell, the signal attenuation will be very serious;

Power register set wrong, air speed set too high (the higher the air speed, the closer the distance);

At indoor temperature, the power supply low voltage is lower than the recommended value, the lower the voltage,

the smaller the power;

The use of antenna and module matching degree is poor or the quality of the antenna itself.

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