Ebyte E31-433T17S, E31-433T17S3, E31-230T17D User Manual
E31-433T17S User Manual
AX5243 433MHz SMD Wireless Module
Chengdu Ebyte Electronic Technology Co.,Ltd. E31-433T17S User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. 1
Contents
1. OVERVIEW .................................................................................................................................. 3
1.1 INTRODUCTION................................................................................................................................................................................ 3
1.2 FEAT URES......................................................................................................................................................................................... 3
1.3 APPLICATION SCENARIOS............................................................................................................................................................... 3
2. SPECIFICATIONS .......................................................................................................................... 4
2.1 LIMIT PARAMETERS ........................................................................................................................................................................ 4
2.2 WORKING PARAMETERS................................................................................................................................................................. 4
3. SIZE AND PIN DEFINITION ........................................................................................................ 5
4. CONNECT TO MCU ...................................................................................................................... 6
5 FUNCTION DESCRIPTION .......................................................................................................... 7
5.1 FIXED TRANSMISSION..................................................................................................................................................................... 7
5.2 BROADCASTING T RANSMISSION ................................................................................................................................................... 7
5.3 BROADCASTING ADDRESS.............................................................................................................................................................. 7
5.4 MONITOR ADDRESS......................................................................................................................................................................... 8
5.5 RESET ............................................................................................................................................................................................... 8
5.6 AUX DESCRIPTION ......................................................................................................................................................................... 8
5.6.1 Indication of UART output ................................................................................................................................................... 8
5.6.2 Indication of wireless transmitting ..................................................................................................................................... 8
5.6.3 Configuration procedure of module.................................................................................................................................... 9
5.6.4 Notes for AUX......................................................................................................................................................................... 9
6 OPERATING MODE ..................................................................................................................... 10
6.1 MODE SWITCHING......................................................................................................................................................................... 10
6.2 NORMAL MODE（MODE 0） ...................................................................................................................................................... 10
6.3 WOR MODE（MODE 1） ............................................................................................................................................................ 11
6.4 POWER SAVING MODE（MODE 2） ........................................................................................................................................... 11
6.5 SLEEP MODE（MODE 3） ........................................................................................................................................................... 11
7 COMMAND FORMAT .................................................................................................................. 12
7.1 FACTORY DEFAULT PARAMETER.................................................................................................................................................. 12
7.2 WORKING PARAMETER READING ................................................................................................................................................ 12
7.3 VERSION NUMBER READING........................................................................................................................................................ 12
7.4 RESET INST RUCTION ..................................................................................................................................................................... 12
7.5 PARAMETER SETTING INST RUCTION........................................................................................................................................... 13
8 HARDWARE DESIGN .................................................................................................................. 15
9 FAQ .................................................................................................................................................. 16
9.1 TRANSMISSION DISTANCE IS NOT IDEAL .................................................................................................................................... 16
9.2MODULE IS EASY TO DAMAGE...................................................................................................................................................... 16
9.3 BIT ERROR RATE IS TOO HIGH ...................................................................................................................................................... 16
Chengdu Ebyte Electronic Technology Co.,Ltd. E31-433T17S User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. 2
10 WELDING OPERATION GUIDANCE ..................................................................................... 16
10.1 REFLOW TEMPERATURE ............................................................................................................................................................. 16
10.2 REFLOW PROFILE ........................................................................................................................................................................ 17
11 E31 SERIES ................................................................................................................................... 17
12 ANTENNA INSTRUCTION ........................................................................................................ 18
12.1 ANTENNA RECOMMENDATION .................................................................................................................................................. 18
13 BATCH PACKAGING METHOD .............................................................................................. 19
REVISE HISTORY ........................................................................................................................... 20
ABOUT US ......................................................................................................................................... 20
Chengdu Ebyte Electronic Technology Co.,Ltd. E31-433T17S User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. 3
1. Overview
1.1 Introduction
E31-433T17S is a 433M SMD wireless s erial port
module (UART) with AXSEM AX5243 RF chip imported
from Switzerland, half duplex, transceiver integrated,
trans parent trans miss ion mode, 425~450.5M H z
frequency band (default 433MHz), TTL level output with
air wake-up function (ultra-low power cons umption).
The module has a FEC forward error correction
algorithm, which has high coding efficiency and strong
error correction capability. In the case of s udden
interference, it can actively correct the interfered data
packets, greatly improving reliability and transmis s ion
distance. In the absence of FEC, such packets can only be discarded. The module has data encryption and compress ion
function. The data transmitted by the module in the air is random, and the data interception is meaningless through strict
encryption and decryption algorithms. The data compression function has the probability of reducing the transmiss ion time ,
reducing the probability of interference, improving reliability and trans miss ion efficiency.
E31-433T17S strictly abides by FCC, CE, CCC and other domestic and foreign design specifications, meets all RF
related certifications, and meets export requirements .
1.2 Features
The real testing distance reaches 2km;
The max trans mitting power is 50mW, multi-level is adjustable via the software;
Support global license-free ISM 433MHz band;
Support data transmis s ion rate from 1.2kbps to 70kbps;
Support low power mode, suitable for battery applications ;
Supports 2.3V~5.2V power supply, and more than 2.3V power supply can guarant ee the best performance;
Support advanced ultra-narrow band GFSK modulation.
Industrial grade s tandard design, support for long-term use from -40 to 85 °C;
Support IPEX/Stamp hole，users can choose to use according to their own needs .
1.3 Application
Home security alarm and remote keyless entry;
smart home and industrial sens ors;
wireless alarm security system;
Building automation solutions;
Wireless industrial grade remote control;
Intelligent agriculture and oilfield solutions;
health care products;
Advanced Meter Reading Architecture (AMI);
Automotive industry applications .
Chengdu Ebyte Electronic Technology Co.,Ltd. E31-433T17S User Manual
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2. Specifications
2.1 Limit parameters
Main parameter
Performance
Remark
Mini. value
Max. value
supply voltage（V）
0
5.2
The module will be burnout
permanently with over 5.5V
Blocking power（dBm）
-
10
There’s small probability of burning
module at close range use
Operating temperature（℃）
-40
85
2.2 Working parameters
Main parameter
Performance
Remark
Mini.
value
Typical value
Max.
value
supply voltage（V）
2.3
3.3
5.2
≥3.3V ensures output power
Communication level（V）
3.3
For 5V TTL, it may be at risk of
burning down
Operating temperature（℃）
-40 - 85
Industrial design
Working frequency（MHz）
425 - 450.5
Support ISM band
Power
consumption
Transmit current(mA）
70
Instant power consumption
Receive current（mA）
13
Sleep current（μA）
4
Software is shut down
Max. transmit power（dBm）
16.6
17.0
18.4
Receiving sensitivity（dBm）
-125
-126
-127
Air data rate is 1.3kbps
Air data rate（bps）
1.2k
5k
70k
Controlled via user’s programming
Main parameter
Description
Remark
Distance for reference
2000m
Test condition：clear and open area, antenna gain: 5dBi，
antenna height: 2.5m，air data rate: 1.3kbps
subcontracting method
43 Byte
The max capacity for each packet
Buffer
512 Byte
Modulation
GFSK
Communication interface
TTL
@3.3V
Package
SMD
Connector
2.00mm
Size
17*30mm
Antenna
Stamp hole+IPEX
50 ohm impedance
Chengdu Ebyte Electronic Technology Co.,Ltd. E31-433T17S User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. 5
3. Size and pin definition
No.
Name
Direction
Function
1
M0
Input
（Weak pull-up）
Work with M 1 to decide 4 working modes of module (not susp ended, if
not used, could be grounded).
2
M1
Input
（weak pull-up）
Work with M 0 to decide 4 working modes of module (not susp ended, if
not used, could be grounded).
3
RXD
Input
TTL UART inputs, connects to external (MCU, PC) TXD output pin. Can
be configured as op en-drain or pull-up input.
4
TXD
Output
TTL UART output s, connects to external RXD (MCU, PC) input pin. Can
be configured as op en-drain or push-pull output
5
AUX
Output
To indicate module ’ s working status & wakes up the external M CU.
During the procedure of self-check initialization, the pin outp ut s low
level. Can be configured as push-p ull outp ut (suspending is allowed).
6
VCC
Input
Power sup p ly ：2.1~ 5.5V DC
7
GND
Input
Ground
8
ANT
Output
Antenna interface (hf signal output pin)
9
GND
Input/Output
Antenna interface (high frequency signal reference ground)
10
GND
Input
Ground
Chengdu Ebyte Electronic Technology Co.,Ltd. E31-433T17S User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. 6
11
GND
Input
Ground
4. Connect to MCU
No.
Description（STM8L MCU）
1
The UART module is TTL level， pls connect to the MCU of TTL..
2
For some MCU works at 5VDC, it may need to add 4-10K pull-up resistor for the TXD & AUX pin.
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