Ebyte E64 Series User manual

Wireless UART Module
E64 Series
This manual may be modified based on product upgrade, please refer to the latest version.
All rights to interpret and modify this manual belong to Chengdu Ebyte Electronic Technology Co., Ltd.
User Manual

Wireless UART Module User Manual of E64 Series Modules
Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 2 / 16
Version
Date
Description
Issued by
1.00
2017/12/15
Initial version
huaa
Brief Introduction
E64 series is applicable for star network at low power consumption. It supports a maximum of 31 slaves to send data to master at the
same time and the slaves can work at WOR mode. (The average current is below 30uA). Data reliability and accuracy are guaranteed by
strict data parity and automatic re-transmission mechanism between masters and slaves. The module operates at 425-451.3MHz, with
transmitting power at 100mA and command transmission available. The module communicates with MCU via UART interface.
E64 series can be either master or slave. When module works as master, it can monitor and receive data from slaves. And when module
works as slave, it can be set to work at WOR mode or slave-transmitter mode. WOR mode allows master to send data and initiate slaves,
while slave-transmitter mode only allows slave to send data to master initially.
Model
Frequency
Transmitting power
Distance
Packing
Antenna
E64-T100S2
433M
20dBm
1500m
SMD
IPEX/Spring antenna/External

Wireless UART Module User Manual of E64 Series Modules
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Contents
1. Features ..................................................................................................................................................... 5
2. Technical Parameters ........................................................................................................................... 5
2.1 Electrical Parameters ................................................................................................................................................. 5
2.1.1 E64-T100S2 ............................................................................................................................................................................. 5
2.2 Parameters Notes ...................................................................................................................................................... 6
3. Mechanical Characteristics ................................................................................................................ 6
3.1 E64-T100S2 ................................................................................................................................................................. 6
3.1.1 Dimension ................................................................................................................................................................................ 6
3.1.2 Pin Definition ........................................................................................................................................................................... 7
4. Recommended Circuit Diagram ...................................................................................................... 7
5. Function Description ............................................................................................................................ 8
5.1 Reset .............................................................................................................................................................................. 8
5.2 AUX Description ......................................................................................................................................................... 8
5.2.1 Indication of UART Output ................................................................................................................................................. 8
5.2.2 Indication of Wireless Transmitting ................................................................................................................................. 8
5.2.3 Configuration Procedure of Module ............................................................................................................................... 9
5.2.4 Notes for AUX ......................................................................................................................................................................... 9
6. Operating Mode ..................................................................................................................................... 9
6.1 Mode Switch ............................................................................................................................................................... 9
6.2 Master Mode (Mode 0) .......................................................................................................................................... 10
6.3 Slave-transmitter Mode (Mode 1) ....................................................................................................................... 10
6.4 Slave-receiver Mode (Mode 2) ............................................................................................................................. 10
6.5 Sleep Mode (Mode 3) ............................................................................................................................................. 10
7. Instruction Format .............................................................................................................................. 10
7.1 Default Parameter .................................................................................................................................................... 11
7.2 Reading Operating Parameters ............................................................................................................................ 11
7.3 Reading Version Number ....................................................................................................................................... 11
7.4 Reset Instruction ...................................................................................................................................................... 11
7.5 Parameter Setting Instruction ............................................................................................................................... 11
8. Parameter Setting ............................................................................................................................... 13
9. Production Guidance ......................................................................................................................... 14
9.1 Reflow Soldering Temperature ............................................................................................................................ 14
9.2 Reflow Soldering Curve .......................................................................................................................................... 15

Wireless UART Module User Manual of E64 Series Modules
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10. FAQ .......................................................................................................................................................... 15
10.1 Communication range is too short ................................................................................................................... 15
10.2 Module is easy to damage .................................................................................................................................. 15
11. Important Notes ................................................................................................................................ 16
12. About Us ............................................................................................................................................... 16

Wireless UART Module User Manual of E64 Series Modules
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1. Features
l Star network: It supports a maximum of 31 slaves to send data to master at the same time. Eight groups with 31 slaves of network
can run simultaneously in the same area.
l Handshake: The handshake between the master and the slave will make the whole communication more reliable. Once one of the
transceivers starts a communication and the communication is being interfered, the transmitter will retransmit the data for a
maximum of three times. The users can receive the transmitting results.
l Ultra-low power consumption: WOR (wake on radio)，is especially suitable for battery powered applications. When module
works at slave-receiver mode (mode 2), the module’s maximum receiving response time is 2000ms, and the average current is
below 30uA.
l FEC: Forward Error Correction has high coding efficiency & good correction performance. In case of sudden interference, it can
correct the interfered data packets proactively, so that the reliability & transmission range are improved correspondingly. Without
FEC, those data packets can only be dropped.
l Encryption Algorithm: The module has the function of data encryption & compression. The data transmitted features
randomness. With such function, data interception becomes pointless. Data compression can decrease the transmission time &
probability of being interfered, while improving the reliability & transmission efficiency.
l Watchdog: With a built-in watchdog, the module runs precise layout and time. Once an exception occurs, the module will restart
in 0.107 second, and continue to work according to the previous parameters.
l Sleep mode: When the module works in sleep mode (Mode 3), it is available for configuration, but not for transmitting & receiving.
The typical current is 2uA in this mode. It can still receive the configuration from the MCU.
2. Technical Parameters
Model
Size
Net weight
Operating
temperature
Operating
humidity
Storage
temperature
E64-T100S2
17*30 mm
2.4±0.1g
-40 ~ 85℃
10% ~ 90%
-40 ~ 125°C
2.1 Electrical Parameters
2.1.1 E64-T100S2
Parameter
Min
Typ
Max
Unit
Transmitting current
84
89
98
mA
Receiving current
15
16
18
mA
Turn-off current
3
4
5
μA
Transmitting power
19
20
21
dBm
Receiving sensitivity
-119
-121
-123
dBm
Recommended frequency
425
433
451.3
MHz
Voltage supply
2.3
3.3
5.2
V
Communication level
2.5
3.3
3.6
V

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2.2 Parameters Notes
l When designing current supply circuit, 30% margin is recommended to be remained so as to ensure long-term stable operation of
the whole module.
l The current at the instant of transmitting may be high, but the total energy consumed may be lower due to very short transmitting
time.
l When using external antenna, the impedance matching degree at different frequency points between antenna and module may
affect the transmitting current at different levels.
l The current consumed when the RF chip is only working at receiving mode is called as receiving current. The tested receiving current
may be higher for some RF chips with communication protocol or when the developers have loaded their own protocol to the whole
module.
l The current at pure receiving mode is at mA level. To achieve µA level receiving current, the users need to manage it through
firmware development.
l The turn-off current is always lower than the current consumed when the power supply source of the whole module is at no-load
status.
l Each LRC component has ±0.1% error, and the error will accumulate since multiple LRC components are used in the whole RF circuit,
and the transmitting current will be different at different modules.
l The power consumption can be lowered by lowering the transmitting power, but the efficiency of the internal PA will be decreased
by lowering transmitting power due to various reasons.
3. Mechanical Characteristics
3.1 E64-T100S2
3.1.1 Dimension

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3.1.2 Pin Definition
Pin No.
Pin item
Pin direction
Pin application
1
M0
Input
（weak pull-up）
Work with M1 & decide the four operating modes.
Floating is not allowed, can be ground.
2
M1
Input
（weak pull-up）
Work with M0 & decide the four operating modes.
Floating is not allowed, can be ground.
3
RXD
Input
TTL UART inputs, connects to external (MCU, PC) TXD output pin. Can be
configured as open-drain or pull-up input.
4
TXD
Output
TTL UART outputs, connects to external RXD (MCU, 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 MCU. During
the procedure of self-check initialization, the pin outputs low level. Can be
configured as open-drain output or push-pull output. (Floating is allowed).
6
VCC
Input
Power supply 2.1V-5.5V DC.
7
GND
Input
Ground electrode
8
ANT
Output
Reference places of high frequency signal output
9
GND
Input/Output
Antenna interface（ high frequency signal output）
10
GND
Input
Ground electrode
11
GND
Input
Ground electrode
4. Recommended Circuit Diagram
No.
Description（STM8L MCU）
1
The UART module is TTL level. Please connect to MCU of TTL level.
2
For some MCU working at 5VDC, it may need to add 4-10K pull-up resistor for the TXD & AUX pin.

Wireless UART Module User Manual of E64 Series Modules
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5. Function Description
5.1 Reset
When the module is powered, AUX outputs low level immediately, conducts hardware self-check and sets the operating mode on the basis
of the user parameters. During the process, the AUX keeps 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, the user needs to wait the AUX rising edge as the starting point
of module’s normal work.
5.2 AUX Description
l AUX Pin can be used as indication for module’s statue and self-checking.
l It can indicate whether the module is in transmission now. There are 3 different effective situations for AUX and they are self-check
of module, interaction between module and targeted devices and data to transmit of the module.
5.2.1 Indication of UART Output
To wake up external M CU :
5.2.2 Indication of Wireless Transmitting
There are three phases for wireless transmitting, and they are UART-data-receiving、handshake and return the result.
When RXD receives serial data, AUX output low level at once. If data frame is compliant with E64’s protocol when RXD ends, AUX remains
low level and the module (master or slave) starts to handshake with target module (slave or master)
When AUX=1, the module will return the result of the transmission，no matter succeeded or failed.
After the slaves start a transaction, the time of the transaction will take is showed as below. AUX remains low level during this time
Air data rate
2Kbps
5Kbps
8Kbps
20Kbps
Normal communication time
About 3s
About 2s
About 1s
About 1s

Wireless UART Module User Manual of E64 Series Modules
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Longest waiting time
About 58s
About 32s
About 20s
About 20s
5.2.3 Configuration Procedure of Module
Only happened when power-on resetting or exiting sleep mode.
5.2.4 Notes for AUX
l 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.
l 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.
l After switching to new operating mode, it won’t be work in the new mode immediately until AUX rising edge 2ms later. If AUX is
on the high level, the operating mode switch can be effected immediately.
l When the user switches to other operating modes from mode 3 (sleep mode) or it’s still in reset process, the module will reset user
parameters, during which AUX outputs low level.
6. Operating Mode
Contents in the table below are the introduction of input status of M1 & M0 and their corresponding mode:
Mode（0-3）
M0
M1
Mode introduction
Notes
Master
(Mode 0)
0
0
Monitor all the salves working at the same channel.
If the WOR is on, master can wake up slaves.
The receiver need to work in Mode
2.
Slave-transmitter
(Mode 1)
1
0
Send the data to master.
The receiver must be the master.
Slave-receiver
(Mode 2)
0
1
Turn on WOR and wait for the data from master.
Sleep (Mode3)
1
1
Parameter setting.
Refer to datasheet please.
6.1 Mode Switch
l The user can decide the operating mode by the combination of M0, M1 and M2. The two GPIOs of MCU can be used to switch
mode. After modifying M0, M1 or M2, it will start to work in new mode 1ms later if the module is free. If there are any serial data
that are yet to finish wireless transmitting, it will start to work in new mode after the UART transmitting finished. After the module
receives the wireless data & transmits the data through serial port, it will start to work in new mode after the transmitting finished.
Therefore, the mode-switch is only valid when AUX outputs 1, otherwise it will delay.
l For example, in mode 2 or mode 4, if the user inputs massive data consecutively and switches operating mode at the same time,
the mode-switch operation is invalid. New mode checking can only be started after all the user’s data process completed. It is
recommended to check AUX pin out status and wait 2ms after AUX outputs high level before switching the mode.

Wireless UART Module User Manual of E64 Series Modules
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l If the module switches from other modes to stand-by mode, it will work in stand-by mode only after all the remained data process
completed. The feature can be used to save power consumption. For example, when the transmitter works in mode 0, after the
external MCU transmits data “12345”, it can switch to sleep mode immediately without waiting the rising edge of the AUX pin,
also the user’s main MCU will go dormancy immediately. Then the module will transmit all the data through wireless transmission
& go dormancy 1ms later automatically, which reduces MCU working time & save power.
l Likewise, this feature can be used in any mode-switch. The module will start to work in new mode within 1ms after completing
present mode task, which enables the user to omit the procedure of AUX inquiry and switch mode swiftly. For example, when
switching from transmitting mode to receiving mode, the user MCU can go dormancy before mode-switch, using external interrupt
function to get AUX change so that the mode-switch can be realized.
l This operation is very flexible and efficient. It is totally designed on the basis of the user MCU’s convenience, at the same time the
work load and power consumption of the whole system has been reduced and the efficiency of whole system is largely improved.
6.2 Master Mode (Mode 0)
Status
When M0 = 0, M1 = 0, module works in mode 0
Transmitting
At master mode, it supports fixed-point transmission.
At most 31 slaves can update data to master at the same time.
Receiving
6.3 Slave-transmitter Mode (Mode 1)
Status
When M0 = 1, M1 = 0, module works in mode 1
Transmitting
Slave can send data to master by sending protocol.
Receiving
N/A
6.4 Slave-receiver Mode (Mode 2)
Status
When M0 = 0, M1 = 1, module works in mode 2
Transmitting
N/A
Receiving
Slave works at WOR mode and waits for the data from master.
6.5 Sleep Mode (Mode 3)
Status
When M0 = 1, M1 = 1, module works in mode 3
Transmitting
N/A
Receiving
N/A
Parameter setting
This mode can be used for parameter setting. It uses serial port 9600 & 8N1 to set module working parameters
through specific instruction format.。
Notes
When the mode changes from stand-by mode to others, the module will reset its parameters, during which the AUX
keeps low level and then outputs high level after reset completing. It is recommended to check the AUX rising edge
for user.
7. Instruction Format
In sleep mode（mode 3：M1=1, M0=1）, it supports instructions below.
(Only support 9600 and 8N1 format when setting)
No.
Instruction format
Illustration
1
C0 + working parameters
C0 + 5 bytes working parameters are sent in hexadecimal format. 6 bytes in total and must be
sent in succession. ( Save the parameters when power-down )
2
C1+C1+C1
Three C1 are sent in hexadecimal format. The module returns the saved parameters and must
be sent in succession.

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3
C2+ working parameters
C2 + 5 bytes working parameters are sent in hexadecimal format. 6 bytes in total and must be
sent in succession. ( Do not save the parameters when power-down )
4
C3+C3+C3
Three C3 are sent in hexadecimal format. The module returns the version information and they
must be sent in succession.
5
C4+C4+C4
Three C4 are sent in hexadecimal format. The module will reset one time and they must be sent
in succession.
7.1 Default Parameter
Default parameter values：C0 00 00 18 00 40
Model
network NO.
Slave address
Air data rate
Baud rate
Parity
Transmitting power
FEC
E64-T100S2
0x00
0x00
8kbps
9600
8N1
100mW
Enable
7.2 Reading Operating Parameters
Instruction format
Description
C1+C1+C1
In instruction mode（M0=0，M1=1），
User gives the module instruction (HEX format): C1 C1 C1,
Module returns the present configuration parameters.
For example, C0 00 00 18 00 44.
7.3 Reading Version Number
Instruction format
Description
C3+C3+C3
In instruction mode（M0=0，M1=1）,
User gives the module instruction (HEX format): C3 C3 C3,
Module returns its present version number, for example C3 64 xx yy.
64 here means the module model (E64 series); xx is the version number and yy refers to the other module features.
7.4 Reset Instruction
Instruction format
Description
C4+C4+C4
In sleep mode（M0=1，M1=1）,
User gives the module instruction (HEX format): C4 C4 C4, the module resets for one time.
During the reset process, the module will conduct self-check, AUX outputs low level. After reset completing,
the AUX outputs high level, then the module starts to work regularly which the working mode can be switched
or be given another instruction.
7.5 Parameter Setting Instruction
The difference between C0 command and C2 command is that C0 command will write parameters into the internal flash memory and can
be saved when power down, while C2 command cannot be saved when power down, because C2 command is temporarily mend
instruction.C2 is recommended for the occasion that need to change the operating parameters frequently, such as C0 00 00 18 03 44.
No.
Item
Description
Notes
0
HEAD
Fix 0xC0 or 0xC2, it means this frame data is control
command.
l Must be 0xC0 or 0xC2
C0: Save the parameters when power-down
C2: Do not save the parameters when power-down
1
NC
Reserved
N/A
2
NC
Reserved
N/A
3
SPED
Rate parameter, including UART baud rate and air
date rate
7，6： UART parity bit
00：8N1（default）
01：8O1
10：8E1
l UART mode can be different between
communication parties

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11：8N1（equal to 00）
-----------------------------------------------
5，4，3 TTL UART baud rate（bps）
000：1200
001：2400
010：4800
011：9600（Default）
100：19200
101：38400
110：57600
111：115200
-----------------------------------------------
2，1，0 Air date rate（bps）
000：Reserved
001：2kb
010：5k
011：8k（Default）
100：Reserved
101：Reserved
110：20k
111：Reserved
-------------------------------------------------------
l UART baud rate can be different between
communication parties
l The UART baud rate has nothing to do with
wireless transmission parameters & won’t
affect the wireless transmit / receive features.
-----------------------------------------------------
l The lower the air date rate, the longer the
transmitting distance, better anti-interference
performance and longer transmitting time.
l The air date rate must keep the same for both
communication parties.
4
CHAN
7，6，5 Network group number 00-07H
000：Team 0
001：Team 1（default）
010：Team 2
011：Team 3
100：Team 4
101：Team 5
110：Team 6
111：Team 7
-----------------------------------------------
4，3，2，1，0 Slave address 00-1EH
（the default 0）
7 Reserved
-----------------------------------------------
6 IO drive mode (the default 1)
1：TXD and AUX push-pull outputs,
RXD pull-up inputs
0：TXD、AUX open-collector outputs,
RXD open-collector inputs
-------------------------------------------------
5，4，3 wireless wake-up time
（for the receiver, it means the monitor interval
time ,while for the transmitter it means continuously
sending preamble code time.）
000：0ms
001：250ms
010：500ms
011：750ms
100：1000ms(default)
101：1250ms
110：1500ms
111：2000ms
l The network with same number cannot exist in
the same region.
l Communication is not available for the devices
with different network.
l Only one master exists in the network.
--------------------------------------------------------
l 31 salves
l The number cannot be repeated for salve in one
network.
l those parameters are invalid for the master
-------------------------------------------------------
l This bit is used to the module internal pull-up
resistor. It also increases the level’s
adaptability in case of open drain. But in some
cases, it may need external pull-up resistor.
--------------------------------------------------------
l The wake-up time for master cannot be less
than the monitor interval time of slave,
otherwise, it may lead data loss.
l The longer the wake-up time, the lower the
average receive current consumption.
l The same WOR time for master and slave is
recommended when master needs to wake up
slave.

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-------------------------------------------------
--------------------------------------------------------
5
OPTION
2， FEC switch
0：Turn off FEC
1：Turn on FEC（default）
-------------------------------------------------
1, 0 transmission power (approximation)
00： 20dBm(default)
01： 17dBm
10： 14dBm
11： 11dBm
l After turn off FEC, the actual data transmission
rate increases while anti-interference ability
decreases. Also the transmission distance is
relatively short.
l Both communication parties must keep on the
same pages about turn-on or turn-off FEC.
--------------------------------------------------------
l The external power must make sure the ability
of current output more than 200mA and
ensure the power supply ripple within 100mV.
l Low power transmission is not recommended
due to its low power supply efficiency.
For example: The meaning of No.3 “SPED” byte:
The binary bit of the byte
7
6
5
4
3
2
1
0
The specific value
(configurable)
0
0
0
1
1
0
0
1
Meaning
UART parity bit 8N1
UART baud rate is 9600
Air date rate is 2k
Corresponding hexadecimal
1
9
8. Parameter Setting
When the module is in Mode 3 (M0=1 M1=1), the parameter can be set by instruction or software in PC.
Please visit www.cdebyte.com to download the software.

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9. Production Guidance
9.1 Reflow Soldering Temperature
Profile Feature
Sn-Pb Assembly
Pb-Free Assembly
Solder Paste
Sn63/Pb37
Sn96.5/Ag3/Cu0.5
Preheat Temperature min （Tsmin）
100℃
150℃
Preheat temperature max (Tsmax)
150℃
200℃
Preheat Time (Tsmin to Tsmax)(ts)
60-120 sec
60-120 sec
Average ramp-up rate(Tsmax to Tp)
3℃/second max
3℃/second max
Liquidous Temperature (TL)
183℃
217℃
Time（tL）Maintained Above（TL）
60-90 sec
30-90 sec
Peak temperature（Tp）
220-235℃
230-250℃
Aveage ramp-down rate（Tp to Tsmax）
6℃/second max
6℃/second max
Time 25℃ to peak temperature
6 minutes max
8 minutes max

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9.2 Reflow Soldering Curve
10. FAQ
10.1 Communication range is too short
l The communication distance will be affected when obstacle exists.
l Data lose rate will be affected by temperature, humidity and co-channel interference.
l The ground will absorb and reflect wireless radio wave, so the performance will be poor when testing near ground.
l Seawater has great ability in absorbing wireless radio wave, so performance will be poor when testing near the sea.
l The signal will be affected when the antenna is near metal object or put in a metal case.
l Power register was set incorrectly, air data rate is set as too high (the higher the air data rate, the shorter the distance).
l The power supply low voltage under room temperature is lower than the recommended value, the lower the voltage, the lower the
transmitting power.
l Due to antenna quality or poor matching between antenna and module.
10.2 Module is easy to damage
l Please check the power supply source, ensure it is within the recommended value, voltage higher than that will damage the module.
l Please check the stability of power source, the voltage cannot fluctuate too much.
l Please make sure antistatic measure are taken when installing and using, high frequency devices have electrostatic susceptibility.
l Please ensure the humidity is within limited range, some parts are sensitive to humidity.
l Please avoid using modules under too high or too low temperature.

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11. Important Notes
l All rights to interpret and modify this manual belong to Ebyte.
l This manual will be updated based on the upgrade of firmware and hardware, please refer to the latest version.
l Please refer to our website for new product information
12. About Us
Technical s u p p o r t: [e-mail]
Documents and RF Setting download link: www.cdebyte.com/en/
Tel：[phone] Ext. 812
Fax：[phone]
Web：www.cdebyte.com/en/
Address：Innovation Center D347, 4# XI-XIN Road, Chengdu, Sichuan, China