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E61-TTL-50
User Manual
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Ebyte E61 Series, E61-TTL-1W, E61-TTL-50 User Manual

Wireless UART Module
E61 Series
All rights to interpret and modify this manual belong to Chengdu Ebyte Electronic Technology Co., Ltd.
User Manual
Wireles s UART Module User Manual of E61 Series Modules
Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 2 / 18
Version
Date
Description
Issued by
1.00
2017/12/13
Initial version
huaa
Brief Introduction
performance MCU, high-speed RF chip and transparent transmission.
57600/38400/19200/9600 etc. Air data rate, FEC, password etc. are configurable for users when module works in fixed-length transmission.
The high-speed feature of module is suitable for polling sampling, handshake response communication, and supports Modbus protocols.
becomes pointless. 65536 configurable addresses are reserved for user to define, which makes the module with matched password receive
Model
Frequency
Transmitting power
Distance
Packing
Antenna
E61-TTL-50
433M
17dBm
1000m
DIP
SMA-K
E61-TTL-1W
433M
30dBm
2500m
DIP
SMA-K
Wireles s UART Module User Manual of E61 Series Modules
Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 3 / 18
Contents
1. Features ..................................................................................................................................................... 5
2. Technical Parameters ........................................................................................................................... 5
2.1 Electrical Parameters ................................................................................................................................................. 6
2.1.1 E61-TTL-50 .............................................................................................................................................................................. 6
2.1.2 E61-TTL-1W ............................................................................................................................................................................ 6
2.3 Parameters Notes ...................................................................................................................................................... 6
3. Mechanical Characteristics ................................................................................................................ 7
3.1 E61-TTL-50 .................................................................................................................................................................. 7
3.1.1 Dimension ................................................................................................................................................................................ 7
3.1.2 Pin Definition ........................................................................................................................................................................... 7
3.2 E61-TTL-1W ................................................................................................................................................................ 8
3.2.1 Dimension ................................................................................................................................................................................ 8
3.2.2 Pin Definition ........................................................................................................................................................................... 8
4. Recommended Circuit Diagram ...................................................................................................... 9
5. Function Description ............................................................................................................................ 9
5.1 Reset .............................................................................................................................................................................. 9
5.2.2 Indication of Wireless Transmitting .............................................................................................................................. 10
5.2.4 Notes for AUX ...................................................................................................................................................................... 10
6.1 Mode Switch .............................................................................................................................................................. 11
6.3 Reserve Mode（Mode 1） .................................................................................................................................... 12
6.5 Sleep Mode (Mode 3) ............................................................................................................................................. 12
7.1 Default Parameter .................................................................................................................................................... 13
7.3 Reading Version Number ....................................................................................................................................... 13
7.5 Parameter Setting Instruction ............................................................................................................................... 14
Wireles s UART Module User Manual of E61 Series Modules
Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 4 / 18
9. Production Guidance ......................................................................................................................... 16
9.1 Reflow Soldering Temperature ............................................................................................................................ 16
9.2 Reflow Soldering Curve .......................................................................................................................................... 17
10. FAQ .......................................................................................................................................................... 17
10.1 Communication range is too short ................................................................................................................... 17
10.2 Module is easy to damage .................................................................................................................................. 17
11. Important Notes ................................................................................................................................ 18
12. About Us ............................................................................................................................................... 18
Wireles s UART Module User Manual of E61 Series Modules
Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 5 / 18
1. Features
l Continuous transmission: At continuous transmission, the length of the data transmitted is unlimited, which enables continuous
transmission at baud rate of 57600/38400/19200/9600/4800/2400/1200.
l Fixed-length transmission: Air data rate, FEC, password etc. are configurable for users. Users transmit data to other modules
with configured air data rate in the most efficient way, which achieves low-latency and high-response.
l User password: 65536 configurable addresses are reserved for users to define, which makes the module with matched password
receive the data.
l High speed transmission: 433M features high speed and low latency. It is suitable for polling sampling, handshake response
communication, and supports Modbus protocols.
l Broadcast transmission: When the module address is set as 0xFFFF, the module can communicate with other modules in the
same channel. That enables broadcast and monitor.
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 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 few uA in this mode. It can still receive the configuration from the MCU.
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.
Model
IC
Size
Net weight
Operating
temperature
Operating
humidity
Storage
temperature
E61-TTL-50
RF
21*36 mm
6.7±0.1g
-40 ~ 85℃
10% ~ 90%
-40 ~ 125°C
E61-TTL-1W
RF
24*43 mm
8.5±0.1g
-40 ~ 85℃
10% ~ 90%
-40 ~ 125°C
Wireles s UART Module User Manual of E61 Series Modules
Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 6 / 18
2.1 Electrical Parameters
2.1.1 E61-TTL-50
Parameter
Min
Typ
Max
Unit
Trans mi tt in g curre nt
66
70
77
mA
Receiving current
18
19
21
mA
Turn -off current
3 4 5
μA
Trans mi tt in g powe r
29
30
31
dBm
Receiving sensitivity
-124
-126
-128
dBm
Recommended frequency
425
433
450.5
MHz
Voltag e s upp ly
2.3
3.3
5.2
V
Communication level
2.5
3.3
3.6
V
2.1.2 E61-TTL-1W
Parameter
Min
Typ
Max
Unit
Trans mi tt in g curre nt
445
480
530
mA
Receiving current
18
19
21
mA
Turn -off current
4 5 6
μA
Trans mi tt in g powe r
29
30
31
dBm
Receiving sensitivity
-124
-126
-128
dBm
Recommended frequency
425
433
450.5
MHz
Voltag e s upp ly
3.3
5.0
5.2
V
Communication level
2.5
3.3
3.6
V
2.3 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,
by lowering transmitting power due to various reasons.
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