Chengdu Ebyte Electronic Technology E32 TTL 100 User Manual
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
E32-TTL-100 Datasheet V1.0
.1．Introduction E32-TTL-100
1.1 Feature E32-TTL-100
E32-TTL-100 is a wireless transceiver module with LoRa spread-spectrum
technology, operates at 434MHz, based on original imported RFIC SX1278
from SEMTECH, transparent transmission is available, TTL level. The module
adopts LoRa spread-spectrum technology, which means the transmitting
distance is much longer than before. The advantages of this module is more
concentrated power density and better anti-interference performance.
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 automatically,
so that the reliability & transmission range are improved correspondingly. But without FEC, those date packets can
only be dropped.
The module has the function of data encryption & compression. The data of the module transmit in the air
features randomness. And with the rigorous encryption & decryption, data interception becomes pointless. The
function of data compression can decrease the transmission time & probability of being interference, while
improving the reliability & transmission efficiency.
1.2 Basic usage E32-TTL-100
No. Usage Description
Transparent
1
transmission
2
3
4 Power-saving
5 Sleep
Professional R&D RF Module 2.4G、915M、868M、780M、490M、434M、315M、230M、170M Wireless Module
Page 1 of 14 The copyright and the product has the Chengdu Ebyte Electronic Technology Co., Ltd. All
Fixed
transmission
Broadcast
transmission
See more details in related manual about fixed transmission and broadcast transmission.
Default
Module A transmits 01 02 03 to module B, then module B receives 01 02 03.
Module can communicate with other modules in different channels, easy for
networking and repeater.
Module A transmits AA BB CC to module B (address: 0x00 01, channel: 0x80), HEX
format is 00 01 80 AA BB CC (00 01 refer s to the address of module B, 80 refers to the
channel of module B), then module B receives AA BB CC (only module B).
Set the module address as 0xFFFF, then the module can communicate with other
modules in same channel.
In power-saving mode, the module’s maximum receiving response time is 2000ms,
which the average current is below 50uA.
When the module works in sleep mode, transmitting & receiving is not available,
while the configuration is available. The typical current is 2.0uA in this mode.
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
1 Size
2 Frequency Band 434MHz
3 Connector
4 Supply voltage
5 Communication level UART, USART
6 Operation Range
7 Transmitting power
21 * 36mm,
Without antenna and SMA
1*7*2.54mm
Plug-in
2.3 - 5.5V DC
Note: the voltage higher than 5.5V is forbidden
About 3000m
Test condition：clear and open area& maximum power， height:> 2m，
date rate: 2.4kbps
Four optional level（0-3），step by 3dB
air
8 Air data rate
9 Standby current
10 Transmitting current 110mA
11 Receiving current
12
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
16 Address
17 RSSI support Built-in intelligent processing
18 Sensitivity
19 Antenna type
20
21
22 Storage temperature -40 ~ +125℃
Communication
interface
Operating
temperature
Operating
temperature
Default 2.4kbps
Can be configured to 0.3、1.2、2.4、4.8、9.6、19.2kbps
2.0uA
M1=1,M0=1 ( Mode 3 )
14.5mA（Mode 0 or Mode 1）
Minimum 30uA（Mode 2 + 2s wake-up time）
UART， 8N1、8E1、8O1，
Eight kinds of UART baud Rate, from 1200 to 115200 bps
65536 configurable addresses
Easy for network, broadcast and fixed transmission
-130dbm@0.3kbps
Sensitivity has nothing to do with serial baud rate and timing
SMA-K
External thread hole, 50 ohm impedance
-40 ~ +85℃
10% ~ 90%
Professional R&D RF Module 2.4G、915M、868M、780M、490M、434M、315M、230M、170M Wireless Module
Page 2 of 14 The copyright and the product has the Chengdu Ebyte Electronic Technology Co., Ltd. All
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
.2．Functional description E32-TTL-100
2.1 Pin definition E32-TTL-100
Pin No. Pin item Pin direction Pin application
1 M0
2 M1
3 RXD Input
4 TXD Output
5 AUX Output
6 VCC Power supply 2.3V-5.5V DC
7 GND Ground
8 Fixing hole Fixing hole
9 Fixing hole Fixing hole
10 Fixing hole Fixing hole
Input
（weak pull-up）
Input
（weak pull-up）
Work with M1 & decide the four operating modes.
Floating is not allowed, can be ground.
Work with M0 & decide the four operating modes.
Floating is not allowed, can be ground.
TTL UART inputs, connects to external (MCU, PC) TXD output
pin. Can be configured as open-drain or pull-up input.
TTL UART outputs, connects to external RXD (MCU, PC) input
pin. Can be configured as open-drain or push-pull 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).
★★★ E32-TTL-100 can be compatible with other E32 series. ★★★
Professional R&D RF Module 2.4G、915M、868M、780M、490M、434M、315M、230M、170M Wireless Module
Page 3 of 14 The copyright and the product has the Chengdu Ebyte Electronic Technology Co., Ltd. All
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
2.2 Connect to MCU E32-TTL-100
No. Description（STM8L MCU）
The UART module is TTL level.
1
For some MCU works at 5VDC, it may need to add 4-10K pull-up resistor for the TXD & AUX pin.
2
2.3 Reset E32-TTL-100
No. Description
When the module is powered, AUX outputs low level immediately, conducts hardware self-check and
set the operating mode on the basis of the user parameters. During the process, the AUX keeps low
1
level. After the process completes, the AUX outputs high level and starts to work as per the operating
mode combined by M1 and A0. Therefore, the user needs to wait the AUX rising edge as the starting
point of module’s normal work.
2.4 AUX description E32-TTL-100
AUX Pin can be used as indication for wireless send & receive buffer and self-check. It can indicate whether
there are data that are yet to send through wireless, or whether all wireless data has sent through UART, or
whether the module is still in the process of self-check initialization.
No. Description
【Indication of UART output】can be used to wake up external MCU.
1
Professional R&D RF Module 2.4G、915M、868M、780M、490M、434M、315M、230M、170M Wireless Module
Page 4 of 14 The copyright and the product has the Chengdu Ebyte Electronic Technology Co., Ltd. All
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
【Indication of wireless transmitting】
Buffer (empty): the internal 512 bytes data in the buffer are written to the RFIC (Auto
subpackage). When AUX=1, the user can input data less than 512 bytes continuously without
overflow.
Buffer (not empty): when AUX=0, the internal 512 bytes data in the buffer have not 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 date, or transmitting wireless subpackage.
Notes: 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.
2
【Configuration procedure of module】
Only happened in the process of power-on and exit sleep mode.
3
No. Notes for AUX
For function 1 & function 2 mentioned above, the priority should be given to the one with low
1
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 meet, AUX outputs high level.
When AUX outputs low level, it means the module is busy & cannot conduct operating mode
2
checking.
After AUX outputs high level 1ms later, it will complete the mode-switch task.
After switching to new operating mode, it won’t be work in the new mode immediately until
3
AUX rising edge 2ms later.
If AUX is on the high level, the operating mode switch can be effect immediately.
When the user switches to other operating modes from mode 3 (sleep mode) or it’s still in reset
4
process, the module will reset user parameters, during which AUX outputs low level.
Professional R&D RF Module 2.4G、915M、868M、780M、490M、434M、315M、230M、170M Wireless Module
Page 5 of 14 The copyright and the product has the Chengdu Ebyte Electronic Technology Co., Ltd. All
Loading...