Ebyte E30-490T20S User manual

E30-490T20S User Manual
SI4438 490MHz 100mW SMD Wireless Module

Chengdu Ebyte Electronic Technology Co,;Ltd E30-490T20S user manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co,;Ltd 1
CONTENT
1OVERVIEW .......................................................................................................................................3
1.1 INTRODUCT ION................................................................................................................................................................................3
1.2 FEAT URES.........................................................................................................................................................................................3
2 SPECIFICATION AND PARAMETER .........................................................................................4
2.1 LIMIT PARAMETER..........................................................................................................................................................................4
2.2 OPERATING PARAMETER................................................................................................................................................................4
3 SIZE AND PIN DEFINITION. ........................................................................................................5
4 CONNECT TO MCU .......................................................................................................................6
5 FUNCTION DESCRIPTION ..........................................................................................................7
5.1 FIXED TRANSMISSION.....................................................................................................................................................................7
5.2 BROADCAST ING T RANSMISSION ...................................................................................................................................................7
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 SWIT CH.............................................................................................................................................................................. 10
6.2 NORMAL MODE (MODE 0) ........................................................................................................................................................... 11
6.3 WAKE-UP MODE (MODE 1).......................................................................................................................................................... 11
6.4 POWER-SAVING MODE (MODE 2)................................................................................................................................................ 11
6.5 SLEEP MODE (MODE 3) ................................................................................................................................................................ 12
7 COMMAND FORMAT................................................................................................................. 12
7.1 DEFAULT PARAMETERS................................................................................................................................................................ 13
7.2 READING OPERATING PARAMETERS........................................................................................................................................... 13
7.3 READING VERSION NUMBER....................................................................................................................................................... 13
7.4 RE SET COMMAND......................................................................................................................................................................... 13
7.5 PARAMETER SETTING COMMAND .............................................................................................................................................. 13
8. HARDWARE DESIGN................................................................................................................ 15
9 FAQ................................................................................................................................................. 16

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9.1 COMMUNICATION RANGE IS TOO SHORT ................................................................................................................................... 16
9.2 MODULE IS EASY TO DAMAGE.................................................................................................................................................... 17
9.3 BER(BIT ERROR RAT E) IS HIGH................................................................................................................................................. 17
10 PRODUCTION GUIDANCE..................................................................................................... 17
10.1 REFLOW SOLDERING TEMPERATURE....................................................................................................................................... 17
10.2 REFLOW SOLDERING CURVE..................................................................................................................................................... 18
11.E30 SERIES .................................................................................................................................. 18
12 ANTENNA RECOMMENDATION........................................................................................... 19
13. PACKAGE FOR BATCH ORDER ........................................................................................... 19
REVISION HISTORY...................................................................................................................... 20
ABOUT US ........................................................................................................................................ 20

Chengdu Ebyte Electronic Technology Co,;Ltd E30-490T20S user manual
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1.Overview
1.1 introduction
E30-490T20S is based on originally imported SI4438 fro m
Silicon Labs, with transparent transmission available, TTL level
output with air wake-up function, WOR (ultra-low power
consumption). They feature half duplex and SMD interface. 490M
frequency, long wave length and strong ability of penetration and
diffraction. They are applicable in the industrial and living
environment like a plant or indoors.
The module features FEC (Forward Error Correction)
algorithm, which ensure its high coding efficiency & good correction
performance. In the case of sudden interference, it can correct the interfered data packets proactively, so that the reliability
& transmission range are improved correspondingly. But without FEC, those data packets can only be dropped.
E30-490T20S strictly follows design standards of FCC, CE, CCC and meets various RF certification requirements
for exporting.
1.2 Features
Communication distance tested is up to 2.5km
Maximum transmission power of 100mW, software multi-level adjustable；
Support the global license-free ISM 490MHz band；
Support air date rate of 1kbps ～25kbps；
Low power consumption for battery supplied applications；
Support 2.3V~5.2V power supply, power supply over 2.3V can guarantee the best performance；
Industrial grade standard design, support -40 ~ 85 °C for working over a long time；
Support IPEX/External/Spring，users can choose to use according to their own needs.
1.3 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.

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2 Specification and parameter
2.1 Limit parameter
Main parameter
Performance
Notes
Min.
Max.
Power supply（V）
0
5.2
Voltage over 5.2V will cause permanent
damage to module
Blocking power（dBm）
-
10
Chances of burn is slim when modules
are used in short distance
Operating temperature（℃）
-40
85
2.2 Operating parameter
Main parameter
Performance
Notes
Min
Typ.
Max.
Operating 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
Operating frequency（M Hz）
470
-
500.5
Support ISM band
Power
consumption
Transmitting current [mA]
89
Instant powerconsumption
Receiving current [mA]
16
Turn-off current [μA]
4
Software is shut down
Max Tx power（dBm）
19.4
20.0
20.5
Receiving sensitivity（dBm）
-120
-121
-122
Air data rate is 1.0kbps
Air data rate（bps）
1k
5k
25k
Controlled via user’s programming
Main parameter
Description
Notes
Distance for reference
2500m
Test condition：clear and open area, antenna gain: 5dBi，
antenna height: 2.5m，air data rate: 1.0kbps
TX length
58 Byte
Maximum capacity of single package, automatic sub-
packing after exceeding.
Buffer
512 Byte
Modulation
GFSK
Communication interface
TTL
@3.3V
Package
SMD
Connector
2.00mm

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Size
17 * 30 mm
Antenna
IPEX/External/Spring
50 ohm impedance
3 Size and pin definition.
No.
Name
Direction
Function
1
M0
Input
（Weak pull-up）
Work with M1 to decide 4 working modes of module (not suspended, if
not used, could be grounded).
2
M1
Input
（weak pull-up）
Work with M0 to decide 4 working modes of module (not suspended, if
not used, could be grounded).
3
RXD
Input
TTL UART inputs, connects to external (M CU, PC) TXD output pin. Can
be configured as open-drain or pull-up input.

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4
TXD
Output
TTL UART outputs, connects to external RXD (M CU, PC) input pin. Can
be configured as open-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 outputs low
level. Can be configured as push-pull output (suspending is allowed).
6
VCC
Input
Power supply ：2.3~ 5.5V DC
7
GND
Input
Ground
8
ANT
Input
Antenna interface (high frequency signal output)
9
Fixed orifice
Fixed orifice
10
Fixed orifice
Fixed orifice
11
Fixed orifice
Fixed orifice
4 Connect to MCU
No.
Description（STM8L MCU）
1
The UART module is TTL level.
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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5 Function description
5.1 Fixed transmission
5.2 Broadcasting transmission
5.3 Broadcasting address
For example: Set the address of module A as 0xFFFF or 0x0000, and the channel as 0x04;

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When module is the transmitter (transparent transmission), all modules under channel 0x04 will receive the data, the
purpose of broadcast is realized.
5.4 Monitor address
For example: Set the address of module A as 0xFFFF or 0x0000, and the channel as 0x04;
When module A is the receiver, it can receive the data sent from all modules under channel 0x04, the purpose of
monitor is realized.
5.5 Reset
When the module is powered, AUX outputs low level immediately, conducts hard ware self-check and sets the
operating mode based on user’s parameters. During the process, the AUX remains low level. After the process
completed, the AUX outputs high level and starts to work as per the operating mode combined by M1 and M0.
Therefore, users need to wait the AUX rising edge as the start of module’s normal work.
5.6 AUX description
AUX Pin can be used as indication for wireless send & receive buffer and self-check.
It can indicate whether there are data that are not sent yet via wireless way, or whether all wireless data has been s ent
through UART, or whether the module is still in the process of self-check initialization.
5.6.1 Indication of UART output
MCU. To wake up external MCU
5.6.2 Indication of wireless transmitting
Buffer (empty): the internal 512 bytes data in the buffer are written to the RFIC (Auto sub-packaging).
When AUX=1, the user can input data less than 512 bytes continuously without overflow. Buffer (not empty): when

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AUX=0, the internal 512 bytes data in the buffer have not been written to the RFIC completely. If the user starts to
transmit data at this circumstance, it may cause overtime when the module is waiting for the user data, or transmitting
wireless sub package.
When AUX = 1, it does not mean that all the UART data of the module have been transmitted already, perhaps the
last packet of data is still in transmission.
5.6.3 Configuration procedure of module
Only happened when power-on resetting or exiting sleep mode
5.6.4 Notes for AUX
No.
Description
1
For function 1 & function 2 mentioned above, the priority should be given to the one with low level output, which means if it
meets each of any low level output condition, AUX outputs low level, if none of the low level condition is met, AUX outputs high
level.
2
When AUX outputs low level, it means the module is busy & cannot conduct operating mode checking. Within 1ms since AUX
outputs high level, the mode switch will be completed.