Ebyte E49-400T30S User manual

E49-400T30S Specifications
433MHz SMD Wireless Module

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400T30S Specifications
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
1
CATALOG
Ⅰ OVERVIEW................................................................................................................................................ 3
1.1 INTRODUCTION .......................................................................................................................................................................................... 3
1.2 FEATURES ..................................................................................................................................................................................................3
1.3 APPLICATION SCENARIOS......................................................................................................................................................................... 3
Ⅱ SPECIFICATIONS................................................................................................................................... 4
2.1 LIMIT PARAMETERS .................................................................................................................................................................................. 4
2.2 WORKING PARAMETERS ...............................................................................................................................................................................4
Ⅲ DIMENSIONS AND PIN DEFINITIONS ..................................................................................................5
Ⅳ RECOMMENDED WIRING DIAGRAM .......................................................................................................... 6
Ⅴ DETAILED FUNCTION............................................................................................................................. 6
5.1 MODULE RESET..........................................................................................................................................................................................6
5.2 AUX DETAILED EXPLANATION.................................................................................................................................................................7
5.2.1 Wireless reception indication.................................................................................................................................... 7
5.2.2 Wireless transmission indication............................................................................................................................. 7
5.2.3 Resetting and exiting sleep mode............................................................................................................................. 7
5.3.4 AUX Notes...................................................................................................................................................................................8
5.3.5 Detailed explanation of fixed-point mode...........................................................................................................8
5.3.6 BROADCAST TRANSMISSION ...................................................................................................................................................................9
5.3.7 BROADCAST ADDRESS ............................................................................................................................................................................9
5.3.8 LISTEN ADDRESS ................................................................................................................................................................................. 9
Ⅵ OPERATING MODE................................................................................................................................. 10
6.1 MODE SWITCH ......................................................................................................................................................................................... 10
6.2 TRANSMISSION MODE (MODE 0).......................................................................................................................................................... 11
6.3 RSSI MODE (MODE 1)........................................................................................................................................................................11
6.4 SETUP MODE (MODE 2)....................................................................................................................................................................... 11
6.5 SLEEP MODE (MODE 3)....................................................................................................................................................................... 12
6.6 QUICK COMMUNICATION TEST .................................................................................................................................................................12
Ⅶ INSTRUCTION FORMAT .........................................................................................................................13
7.1 FACTORY DEFAULT PARAMETERS .............................................................................................................................................................13
7.2 READING OF WORKING PARAMETERS .......................................................................................................................................................13

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400T30S Specifications
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
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7.3 READING OF VERSION NUMBER.............................................................................................................................................................. 13
7.4 PARAMETER SETTING INSTRUCTIONS ..................................................................................................................................................... 13
Ⅷ HARDWARE DESIGN............................................................................................................................... 16
Ⅸ COMMON PROBLEM ................................................................................................................................. 17
9.1 THE TRANSMISSION DISTANCE IS NOT IDEAL....................................................................................................................................17
9.2 MODULE IS EASILY DAMAGED ........................................................................................................................................................... 17
9.3 BIT ERROR RATE TOO HIGH ................................................................................................................................................................ 17
Ⅹ WELDING WORK GUIDE.........................................................................................................................18
10.1 REFLOW TEMPERATURE .......................................................................................................................................................................... 18
10.2 REFLOW SOLDERING CURVE .................................................................................................................................................................19
Ⅺ RELATED MODELS ................................................................................................................................. 19
Ⅻ ANTENNA GUIDE ................................................................................................................................... 20
12.1 ANTENNA RECOMMENDATION.................................................................................................................................................................. 20
XIII BULK PACKAGING.............................................................................................................................21
REVISE HISTORY ....................................................................................................................................... 21
ABOUT US.................................................................................................................................................... 21

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400T30S Specifications
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
3
Ⅰ Overview
1.1 Introduction
E49-400T30S is a super cost-effective wireless data transmission module
launched by Chengdu Ebyte. It has 4 working modes. Each transmission method
has its own characteristics and can be applied to various application scenarios.
E49-400T30S can perfectly support industrial-grade applications, and has
undergone rigorous testing at the factory to ensure its industrial reliability
and batch consistency.
E49-400T30S supports a maximum transmit power of 20dBm. Users can set lower
output power to save power consumption. The module works in the 433MHz frequency
band, with TTL level output, and is compatible with 3.3V IO port voltage.
The module has data encryption function. The data transmitted by the module in the air has randomness. Through
strict encryption and decryption algorithm, the data interception is meaningless, the probability of interference
is reduced, and the reliability and transmission efficiency are improved. And it is a low-cost wireless serial
transceiver module.
1.2 Features
The measured communication distance can reach 5.6km;
The maximum transmit power is 30 dB, and the software is multi-level adjustable;
Support global license-free ISM 433MHz frequency band;
Support data transmission rate of 1.2Kbps～200Kbps;
Support low power consumption mode, suitable for battery applications;
Support advanced ultra-narrowband GFSK modulation;
Support 2.6V~5.5V power supply;
Industrial-grade standard design, support long-term use at -40 ~ 85°C;
Support stamp hole and IPEX interface, users can choose to use according to their own needs.
1.3 Application scenarios
Wearable devices;
Smart home and industrial sensors, etc.;
Security system, positioning system;
Wireless remote control, drone;
Wireless game remote control;
Healthcare products;
Wireless voice, wireless headset;
Automotive industry applications.

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400T30S Specifications
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
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Ⅱ Specifications
2.1 Limit parameters
Main parameters
Performance
Remark
Minimum
Maximum
Supply voltage (V)
0
5.5
More than 5.5V will permanently
burn the module
Blocking power (dBm)
-
10
It is less likely to burn when used
at close range.
Working temperature (℃)
-40
85
2.2 Working parameters
Main parameters
Performance
Remark
Minimum
Typical
Maximum
Working voltage (V)
2.6
5
5.5
Communication level (V)
3.3
Risk of burnout with 5V TTL
Working temperature (℃)
-40
-
85
Industrial grade design
Working frequency band (MHz)
410
433
510
upport ISM band
Pow
er
con
sum
pti
on
Emission current (mA)
550
Instantaneous power consumption
Receive current (mA)
18
Sleep current (μA)
1.2
software shutdown
Maximum transmit power (dBm)
-
-
30.0
Receive Sensitivity (dBm)
-119
-120
-121
The air rate is 1.2kbps
Air rate (bps)
1.2k
2.4k
200k
User programming control
Main parameters
Description
Remark
Reference distance
5.6Km
Clear and open environment, antenna gain 5dBi,
antenna height 2.5m, air rate 1.2kbp
Subcontracting method
54 Btye
The maximum capacity of a single package, it will
be automatically sub-packaged when it exceeds.
Cache capacity
500 Btye
Modulation method
GFSK
Communication Interface
UART serial port
Packaging method
SMD
Interface
1.27mm

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400T30S Specifications
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
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Dimensions
26*16mm
Antenna interface
IPEX/ Stamp hole
Equivalent impedance is about 50 ohms
Ⅲ Dimensions and Pin Definitions
Pin
number
Pin
name
Pin Orientation
Pin Usage
1
GND
Input
Module ground
2
VCC
Input
DC Module power positive reference, voltage range: 3.3 ~ 5.5V DC
3
AUX
Output
Used to indicate the working state of the module; the user wakes up the external MCU, and outputs a low level
during the power-on self-test initialization; (can be left floating)
4
TXD
Output
TTL serial output, connected to external RXD input pin;
5
RXD
Input
TTL serial port input, connected to the external TXD output pin;
6
M1
Input (very weak
pull-up)
Cooperate with M0 to determine the 4 working modes of the module (can not be suspended, if not used, it
can be grounded)
7
M0
Input (very weak
pull-up)
Cooperate with M1 to determine the 4 working modes of the module (can not be suspended, if not used, it
can be grounded)
11
ANT
Output
Antenna interface (high frequency signal output, 50 ohm characteristic impedance)
12
GND
Fixedly
13
GND
Fixedly
14
GND
Fixedly
18
NC
Input/Output
NC pin, this pin needs to be left floating (for subsequent expansion)
19
NC
Input/Output
NC pin, this pin needs to be left floating (for subsequent expansion)

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400T30S Specifications
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
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20
NC
Input/Output
NC pin, this pin needs to be left floating (for subsequent expansion)
21
NC
Input
download port --VCC (Hanging, users do not need to pay attention)
22
NC
Input
download port –SWDIO (Hanging, users do not need to pay attention)
23
GND
Input
download port --GND (Hanging, users do not need to pay attention)
24
NC
Input
download port --SWCLK (Hanging, users do not need to pay attention)
Ⅳ Recommended wiring diagram
Serial
Number
A brief description of the connection between the module and the microcontroller (the above picture
takes the STM8L microcontroller as an example)
1
The wireless serial port module is TTL level, please connect with TTL level MCU.
2
Some 5V microcontrollers may need to add 4~10K pull-up resistors to the TXD and AUX pins of the
module.
Ⅴ Detailed function
5.1 Module reset
After the module is powered on, AUX will output a low level immediately, perform hardware self-test, and set
the working mode according to user parameters. During this process, the AUX keeps the low level, and after the
completion, the AUX outputs the high level, and starts to work normally according to the working mode formed by
the combination of M1 and M0. Therefore, the user needs to wait for the rising edge of AUX as the starting point
for the normal operation of the module.

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400T30S Specifications
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
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5.2 AUX detailed explanation
AUX is used for wireless transceiver buffer indication and self-check indication.
It indicates whether the module has data that has not been transmitted wirelessly, or whether the wireless
data has been received and not all sent through the serial port, or the module is in the process of initializing
and self-checking.
5.2.1 Wireless reception indication
After the module receives valid wireless data, it will immediately pull down AUX, and start the
serial port to output data. After the data output is completed, it will pull up AUX.
5.2.2 Wireless transmission indication
After the module receives the serial port data, it will pull down AUX immediately and start sending
data wirelessly. After all data is sent, pull up AUX again.
5.2.3 Resetting and exiting sleep mode
Only at reset and when exiting sleep mode

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400T30S Specifications
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
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5.3.4 AUX Notes
For the above functions 1 and 2, the output low level has priority, that is, if any one of the output low
level conditions is satisfied, the AUX outputs the low level; when all the low level conditions are not satisfied,
the AUX outputs the high level.
When AUX outputs a low level, it means that the module is busy, and the working mode detection will not be
performed at this time; when the module AUX outputs a high level, the mode switching will be completed.
When the user enters other modes from mode 3 (sleep mode) or during the reset process, the module will reset
the user parameters, during which AUX outputs a low level.
5.3.5 Detailed explanation of fixed-point mode

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400T30S Specifications
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
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5.3.6 Broadcast transmission
5.3.7 Broadcast address
Example: Set the address of module A to 0xFFFF 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.
5.3.8 Listen address
Example: Set the address of module A to 0xFFFF and the channel to 0x04.
When module A is used as a receiver, it can receive all the data under the 0x04 channel to achieve the purpose
of monitoring.