User manual

FCC ID: 2ALPH-E32-TTL-100

Users Manual

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FCCID_3359170

E32-TTL-100 Datasheet V1.0 Chengdu Ebyte Electronic Technology Co., Ltd.
Purchase the sample：http://www.aliexpress.com/store/2077046 Website： www.cdebyte.com

1.3 Electrical parameter E32-TTL-100

No. Parameter item Parameter details & Description

21 * 36mm,
1 Size
Without antenna and SMA

2 Frequency Band 434MHz

1*7*2.54mm
3 Connector
Plug-in

2.3 - 5.5V DC
4 Supply voltage
Note: the voltage higher than 5.5V is forbidden

5 Communication level UART, USART

About 3000m

6 Operation Range Test condition：clear and open area& maximum power， height:> 2m，air

date rate: 2.4kbps

7 Transmitting power Four optional level（0-3），step by 3dB

Default 2.4kbps
8 Air data rate
Can be configured to 0.3、1.2、2.4、4.8、9.6、19.2kbps

2.0uA
9 Standby current
M1=1,M0=1 ( Mode 3 )

10 Transmitting current 110mA

14.5mA（Mode 0 or Mode 1）
11 Receiving current
Minimum 30uA（Mode 2 + 2s wake-up time）

Communication UART， 8N1、8E1、8O1，
12
interface Eight kinds of UART baud Rate, from 1200 to 115200 bps

13 Driving mode UART can be configured to push-pull/high pull, open-drain

14 Transmitting length 512 bytes buffer，58 bytes per package

15 Receiving length 512 bytes buffer，58 bytes per package

65536 configurable addresses
16 Address
Easy for network, broadcast and fixed transmission

17 RSSI support Built-in intelligent processing

-130dbm@0.3kbps
18 Sensitivity
Sensitivity has nothing to do with serial baud rate and timing

SMA-K
19 Antenna type
External thread hole, 50 ohm impedance

Operating
20 -40 ~ +85℃
temperature

Operating
21 10% ~ 90%
temperature

22 Storage temperature -40 ~ +125℃

Professional R&D RF Module 2.4G、915M、868M、780M、490M、434M、315M、230M、170M Wireless Module
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E32-TTL-100 Datasheet V1.0 Chengdu Ebyte Electronic Technology Co., Ltd.
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.3．Operating mode E32-TTL-100

Contents in below table are the introduction of input status of M1 & M0 and their corresponding mode:

Mode（0-3） M1 M0 Mode introduction Remark

Mode 0 UART and wireless channel is opened, The receiver must works
0 0
Normal transparent transmission is on. in mode 0 or mode 1

UART and wireless channel is opened. The

difference between normal mode and wake-up The receiver can works
Mode 1
0 1 mode is it will add preamble code automatically in mode 0, mode 1 or
Wake-up
before data packet transmission so that it can mode 2.

awaken the receiver works in mode 2.

UART is disabled. Wireless module works at 1,the transmitter must
Mode 2
WOR mode (wake on radio). It will open the works in mode 1
Power-savin 1 0
UART and transmit data after receive the 2,transmitting is not
g
wireless data. allowed in this mode

Mode 3
1 1 Parameter setting.
Sleep

3.1 Mode switch E32-TTL-100

No. Remarks
The user can decide the operating mode by the combination of M1 and M0. The two GPIO of MCU can
be used to control the mode-switch. After modifying M1 or M0, it will start to work in new mode 1 ms
later if the module is free. If there are any serial data that is yet to finish wireless transmitting, it will
1
start to work in new mode after the UART transmitting finishing. After the module receives the wireless
data & transmits the data through serial port, it will start to work in new mode after the transmitting
finishing. Therefore, the mode-switch is only workable when AUX outputs 1, otherwise it will delay.
For example, in mode 0 or mode 1, 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
2
be started after all the user’s data process completing. It is recommended that after check AUX
pinout status and wait 2ms after AUX outputs high level, then switch the mode.
If the module switches from other modes to stand-by mode, it will be work in stand-by mode only
after all the remained data process completing. The feature can be used to save power consumption.
For example, the transmitter works in mode 0, after the external MCU transmits data “12345”. It can switch to
3
sleep mode immediately but not wait 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 reduce MCU working time & save power.
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 enable the user to omit the procedure of AUX
4 inquiry and switch mode swiftly. For example, when switch from transmitting mode to receiving mode,
the user MCU can go dormancy in advance of mode-switch, using external interrupt function to get
AUX change so that the mode-switch can be done.
This operation is very flexible and efficient. It is totally designed on the basis of the user MCU’s

5 convenience, at the same time reduce the whole system work load as much as possible, increase the

efficiency of system work and reduce power consumption.

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E32-TTL-100 Datasheet V1.0 Chengdu Ebyte Electronic Technology Co., Ltd.
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3.2 Normal mode（Mode 0） E32-TTL-100

When M1 = 0 & M0 = 0, module works in mode 0
The module can receive the user data from serial port, and transmit wireless data
package which length is 58 bytes. When the data inputted by user is up to 58 byte, the
module will start wireless transmission. During which the user can input data
continuously for transmission.
When the required transmission bytes is less than 58 byte, the module will wait 3-byte
time and treat it as data termination unless continuous data inputted by user. Then the
module will transmit all the data through wireless channel.
Transmitting
When the module receives the first data packet from user, the AUX outputs low level.
After the module transmit all the data into RF chip & start transmission, AUX outputs
high level.
At this time, it means that the last wireless data package transmission has started, which
enable the user to input another 512 bytes continuously. The data package transmitted
from the module works in mode 0 can only be received by the module works in mode 0
or 1.
The module keeps the wireless receive function on, it can receive the data packet
transmitted from the module works in mode 0 & mode 1. After receiving the data
Receiving packet, the AUX outputs low level, 5ms later the module starts to transmit wireless data
through serial port TXD pin. After all the wireless data have been transmitted via serial
port, the module AUX outputs high level.

3.3 Wake-up mode（Mode 1） E32-TTL-100

When M1 = 0 & M0 = 1, module works in mode 1.
The condition of data packet transmission & AUX function is the same as mode 0. The
only difference is that the module will add preamble code before each data packet
automatically. The preamble code length depends on the wake-up time set in the user
Transmitting
parameters. The purpose of the preamble code is waking up the receiving module works
in mode 2. Therefore, the data package transmitted from mode 1 can be received by
mode 0, mode1 and mode 2.
Receiving The same as that in mode 0.

3.4 Power-saving mode（Mode 2） E32-TTL-100

When M1 = 1 & M0 = 0, module works in mode 2.
UART is closed, the module cannot receive any serial port data from outside MCU. Hence
Transmitting
the module works in this mode does not have the function of wireless transmission.
In mode 2, it is required the date transmitter works in mode 1.
The wireless module monitors the preamble code at regular time. Once it gets the
preamble code, it will remain as receive status and wait for the completion of the entire
Receiving
valid date package receives. Then the module lets the AUX outputs low level, 5ms later
opens the serial port to transmit received wireless data through TXD. Finally AUX outputs
high level after process completing.

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E32-TTL-100 Datasheet V1.0 Chengdu Ebyte Electronic Technology Co., Ltd.
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.4．Instruction format E32-TTL-100

In sleep mode（mode 3：M1=1, M0=1）, it supports below instructions on list.
(Only support 9600 and 8N1 format when setting)

No. Instruction format Illustration

C0 + 5 bytes working parameters are sent in hexadecimal format.
1 C0 + working parameters 6 bytes in total and must send in succession. ( Save the parameters
when power-down )

Three C1 are sent in hexadecimal format. The module returns the
2 C1 C1 C1
saved parameters and must send in succession.

C2 + 5 bytes working parameters are sent in hexadecimal format.
3 C2 + working parameters 6 bytes in total and must send in succession. ( Not save the
parameters when power-down )

Three C3 are sent in hexadecimal format. The module returns the
4 C3 C3 C3
version information and must send in succession.

Three C4 are sent in hexadecimal format. The module will reset
5 C4 C4 C4
one time and must send in succession.

4.1 Default parameter E32-TTL-100

Default parameter values：C0 00 00 1A 17 44
Model Frequency Address Channel Air data rate Baud rate Parity
E32-TTL-100 434MHz 0x0000 0x17 2.4kbps 9600 8N1

4.2 Parameter setting instruction E32-TTL-100

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,

Like C2 00 00 1A 17 44.

No. Item Description Remark

0 HEAD Fix 0xC0 or 0xC2, it means this frame Must be 0xC0 or 0xC2

data is control command C0: Save the parameters when power-down

C2: Not save the parameters when

power-down

1 ADDH High address byte of module 00H-FFH

（the default 00H）

2 ADDL Low address byte of module 00H-FFH

（the default 00H）

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E32-TTL-100 Datasheet V1.0 Chengdu Ebyte Electronic Technology Co., Ltd.
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3 SPED Rate parameter，including UART baud

rate and air date rate  UART mode can be different between

7，6 UART parity bit communication parties

00：8N1（default）

01：8O1

10：8E1

11：8N1（equal to 00）

------------------------------------------ -----------------------------------------------

5，4，3 TTL UART baud rate（bps）  UART baud rate can be different

000：1200bps between communication parties

001：2400bps  The UART baud rate has nothing to do

010：4800bps with wireless transmission parameters

011：9600bps（default） & won’t affect the wireless transmit /

100：19200bps receive features.

101：38400bps

110：57600bps

111：115200bps

------------------------------------------ ----------------------------------------------

2，1，0 Air date rate（bps）  The lower the air date rate, the longer

000：0.3Kbps the transmitting distance, better

001：1.2Kbps anti-interference performance and

010：2.4Kbps（default） longer transmitting time

011：4.8Kbps  The air date rate must keep the same

100：9.6Kbps for both communication parties.

101：19.2Kbps

110：19.2Kbps

111：19.2Kbps

4 CHAN 7，6，5： N/A  0(recommended)

------------------------------------------ -------------------------------------------------

4-0：Communication channel, default 00H-1FH

17H（434MHz）

5 OPTION 7， Fixed transmission（similar to  In fixed transmission mode, the first

MODBUS） three bytes of each user's data frame

0： Transparent transmission can be used as high/low address and

mode（default） channel. The module changes its

1： Fixed transmission mode address and channel when transmit.

And it will revert to original setting

after complete the process.

------------------------------------------ -----------------------------------------------

6 IO drive mode(the default 1)  This bit is used to the module internal

1：TXD and AUX push-pull pull-up resistor. It also increases the

outputs, level’s adaptability in case of open

RXD pull-up inputs drain. But in some cases, it may need

0：TXD、AUX open-collector external pull-up resistor.

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E32-TTL-100 Datasheet V1.0 Chengdu Ebyte Electronic Technology Co., Ltd.
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outputs,

RXD open-collector inputs

---------------------------------------- -----------------------------------------------

5，4，3 wireless wake-up time（for the  The transmit & receive module work in

receiver, it means the monitor interval mode 0, whose delay time is invalid &

time ,while for the transmitter it means can be arbitrary value.

continuously sending preamble code  The transmitter works in mode 1 can

time.） transmit the preamble code of the

000：250ms（default） corresponding time continuously.

001：500ms  When the receiver works in mode 2,

010：750ms the time means the monitor interval

011：1000ms time (wireless wake-up). Only the data

100：1250ms from transmitter that works in mode 1

101：1500ms can be received.

110：1750ms  The wake-up time set by transmitter

111：2000ms cannot be less than the monitor

interval time of receiver; otherwise, it

may lead to data loss. In case of

two-way communication, both parties

should keep the wake-up time the

same.

 The longer the wake-up time, the

lower the average receive current

consumption.

----------------------------------------- ------------------------------------------------

2， FEC switch  After turn off FEC, the actual data

0：Turn off FEC transmission rate increases while

1：Turn on FEC（Default） anti-interference ability decreases.

Also the transmission distance is

relatively short.

 Both communication parties must

keep on the same pages about

turn-on or turn-off FEC.

----------------------------------------- -----------------------------------------------

1, 0 transmission power  The external power must make sure

(approximation) the ability of current output more than

200mA and ensure the power supply

ripple within 100mV.

 Low power transmission is not

recommended due to its low power

supply efficiency.

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E32-TTL-100 Datasheet V1.0 Chengdu Ebyte Electronic Technology Co., Ltd.
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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
0 0 0 1 1 0 1 0
(user configures)

Meaning UART parity bit 8N1 UART baud rate is 9600 Air date rate is 2.4k

Corresponding hexadecimal 1 A

4.3 Reading operating parameters E32-TTL-100

Instruction format Description
In sleep mode（M0=1，M1=1），
User gives the module instruction (HEX format): C1 C1 C1,
C1+C1+C1
Module returns the present configuration parameters.
For example, C2 00 00 1A 17 44.

4.4 Reading version number E32-TTL-100

Instruction format Description
In sleep mode（M0=1，M1=1）,
User gives the module instruction (HEX format): C3 C3 C3,
C3+C3+C3 Module returns its present version number, for example C3 32 xx yy.
32 here means the module model (E32 series); xx is the version number and yy
refers to the other module features.

4.5 Reset instruction E32-TTL-100

Instruction format Description
In sleep mode（M0=1，M1=1）,
User gives the module instruction (HEX format): C4 C4 C4, the module resets for
one time.
C4+C4+C4 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.

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E32-TTL-100 Datasheet V1.0 Chengdu Ebyte Electronic Technology Co., Ltd.
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FCC Statement
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful

interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the

equipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.

These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates,

uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to

radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause

harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try

to correct the interference by one or more of the following

measures:

-- Reorient or relocate the receiving antenna.

-- Increase the separation between the equipment and receiver.

-- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

-- Consult the dealer or an experienced radio/TV technician for help.

FCC Radiation Exposure Statement

This modular complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located

or operating in conjunction with any other antenna or transmitter.

If the FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the

module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following:

“Contains Transmitter Module FCC ID: 2ALPH-E32-TTL-100 Or Contains FCC ID: 2ALPH-E32-TTL-100”

when the module is installed inside another device, the user manual of this device must contain below warning statements;

1. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference.

(2) This device must accept any interference received, including interference that may cause undesired operation.

2. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the

equipment.

The devices must be installed and used in strict accordance with the manufacturer's instructions as described in the user documentation that

comes with the product

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Document Created: 2017-04-14 16:58:13
Document Modified: 2017-04-14 16:58:13

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