Ebyte E75-2G4M20S User manual

E75-2G4M20S User Manual
JN5168 Zigbee SMD Wireless Module

Chengdu Ebyte Electronic Technology Co.,Ltd. E75-2G4M20S User Manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
1
1 Product Overview
1.1 Brief Introduction
E75-2G4M20S designed by Chengdu Ebyte is a
high-performance and low-consumption ZigBee wireless
transceiver module, which is based on NXP JN5168. It provides a
complete application integration scheme at ISM(2.4-2.5GHz) based
on IEEE802.15.4. It supports protocols like FastZigBee, ZNET,
JenNet-IP, ZigBee-PRO, RF4CE and etc. It can be widely applied in
industrial control, industrial data collection, agriculture control, personnel location in mine lot, and intelligent furniture &
temperature controller.
E75-2G4M20S integrates a complete transmitting and receiving circuit of RF on the module and is embedded
with complicated wireless communication protocols in the internal MCU. It greatly simplifies the developing process
which enables the users to put their products on the market in a shorter time and makes them more competitive.
E75-2G4M20S is without factory firmware. Users need to conduct a secondary development based on their own
demands.
1.2 Feature
Communication distance tested is up to 1km in ideal condition;
Maximum transmitting power of 100mW, adjustable via software;
Support ZNET, JenNet-IP, ZigBee-PRO, RF4CE;
Support the global license-free ISM 2.4GHz；
With built-in 32-bit high-performance and low power MCU;
With abundant resources, 256KB FLASH，32KB RAM
Support 2.0V~3.6V power supply, power supply over 3.3V can guarantee the best performance；
Industrial grade standard design, support -40 ~ +85 °C for working over a long time；
PCB and IPEX antenna optional, good for secondary and embedded development.
1.3 Application
Smart Home and Industrial Sensors;
Wireless toy and remote control;

Chengdu Ebyte Electronic Technology Co.,Ltd. E75-2G4M20S User Manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
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Wireless alarm security system；
Building automation solutions；
Tire pressure monitoring;
Health care products；
Wireless audio and wireless earphone.
2. Technical Parameters
2.1 Limit parameter
Main parameter
Performance
Note
Min
Max
Voltage supply [V]
0
3.6
Voltage over 3.6V 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
Note
Min
Typ
Max
Voltage supply [V]
2.0
3.3
3.6
≥3.3 V ensures output power
Communication level [V]
3.3
For 5V TTL, it may be at risk of burning
down
Operating temperature [℃]
-40
-
85
Frequency [MHz]
2405
-
2480
ISM band
Power
consumption
Transmitting current
（mA）
145
Instant power consumption
Receiving current
（mA）
26
Stand-by current
（μA）
2
Software is shut down
Transmitting power [dBm]
19.6
20.0
20.5
Receiving sensitivity [dBm]
-98.5
-100
-102
Main parameter
Description
Note
Distance
1000m
Test condition：clear and open area, antenna gain: 5dBi，
antenna height: 2.5m

Chengdu Ebyte Electronic Technology Co.,Ltd. E75-2G4M20S User Manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
3
Xtal
32MHz
Protocol
Zigbee (Recommended)
ZNET, JenNet-IP, ZigBee-PRO, RF4CE
Package
SMD
Connector
1.27mm
Stamp hole
RFIC
JN5168ASGU482/QFN40
FLASH
256 KB
RAM
32 KB
Core
32bit RISC CPU
Size
16 * 30 mm
Antenna
PCB / IPEX
50Ω Impedance
3 Dimension and Pin Definition
No.
Item
Direction
Application

Chengdu Ebyte Electronic Technology Co.,Ltd. E75-2G4M20S User Manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
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1
ADC1
I
JN5168 input ADC pin（Refer to JN5168 Datasheet for more
details）
2
SPI-CLK
I
JN5168 SPI communication clock pin
3
SPI-MISO/ISP
I/O
JN5168 SPI output. When ISP is used for burn via UART, it’s
burn mode after pulling down and powering on.
4
SPI-MOSI
I/O
JN5168 SPI input
5
SPI0-SE
I
SPI CS pin. It’s used to start a SPI communication.
6
DIO0
I/O
It can be configured as general IO port.（Refer to
JN5168 Datasheet for more details）
7
DIO1
I/O
It can be configured as general IO port.（Refer to
JN5168 Datasheet for more details）
8
NC
--
NC
9
NC
--
NC
10
DIO4
I/O
It can be configured as general IO port.（Refer to
JN5168 Datasheet for more details）
11
DIO5
I/O
It can be configured as general IO port.（Refer to
JN5168 Datasheet for more details）
12
DIO6
I/O
It can be configured as general IO port.（Refer to
JN5168 Datasheet for more details）
13
DIO7
I/O
It can be configured as general IO port.（Refer to
JN5168 Datasheet for more details）
14
DIO8
I/O
It can be configured as general IO port.（Refer to
JN5168 Datasheet for more details）
15
DIO9
I/O
It can be configured as general IO port.（Refer to
JN5168 Datasheet for more details）
16
DIO10
I/O
It can be configured as general IO port.（Refer to
JN5168 Datasheet for more details）
17
VDD
Power
positive
Power supply 2.0V ~ 3.6V DC（3.3V and an added external
ceramic filter capacitor are recommended.）
18
GND
Ground
Ground electrode. It connects to the power reference place.
19
DIO11
I/O
It can be configured as general IO port.（Refer to
JN5168 Datasheet for more details）
20
DIO12
I/O
It can be configured as general IO port.（Refer to
JN5168 Datasheet for more details）
21
DIO13
I/O
It can be configured as general IO port.（Refer to
JN5168 Datasheet for more details）
22
REST
I
It is reset pin.
23
DIO14
I/O
It can be configured as general IO port.（Refer to
JN5168 Datasheet for more details）
24
DIO15
I/O
It can be configured as general IO port.（Refer to
JN5168 Datasheet for more details）
25
DIO16
I/O
It can be configured as general IO port.（Refer to
JN5168 Datasheet for more details）

Chengdu Ebyte Electronic Technology Co.,Ltd. E75-2G4M20S User Manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
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26
DIO17
I/O
It can be configured as general IO port.（Refer to
JN5168 Datasheet for more details）
27
ADC2
I
It can be configured as general IO port.（Refer to
JN5168 Datasheet for more details）
4 Basic Operation
4.1 Hardware design
It is recommended to use a DC stabilized power supply. The power supply ripple factor is as small as possible, and
the module needs to be reliably grounded.；
Please pay attention to the correct connection of the positive and negative poles of the power supply. Reverse
connection may cause permanent damage to the module；
Please check the power supply to ensure it is within the recommended voltage otherwise when it exceeds the
maximum value the module will be permanently damaged；
Please check the stability of the power supply, the voltage can not be fluctuated frequently；
When designing current supply circuit, 30% margin is recommended to be remained so as to ensure long-term
stable operation of the whole module.
The module should be as far away as possible from the power supply, transformers, high-frequency wiring and other
parts with large electromagnetic interference.；
High-frequency digital routing, high-frequency analog routing, and power routing must be avoided under the
module. If it is necessary to pass through the module, assume that the module is soldered to the Top Layer, and the
copper is spread on the Top Layer of the module contact part(well grounded), it must be close to the digital part of
the module and routed in the Bottom Layer；
Assuming the module is soldered or placed over the Top Layer, it is wrong to randomly route over the Bottom Layer
or other layers, which will affect the module's spurs and receiving sensitivity to varying degrees；
It is assumed that there are devices with large electromagnetic interference around the module that will greatly
affect the performance. It is recommended to keep them away from the module according to the strength of the
interference. If necessary, appropriate isolation and shielding can be done；
Assume that there are traces with large electromagnetic interference (high-frequency digital, high-frequency analog,
power traces) around the module that will greatly affect the performance of the module. It is recommended to stay
away from the module according to the strength of the interference.If necessary, appropriate isolation and shielding
can be done.
If the communication line uses a 5V level, a 1k-5.1k resistor must be connected in series (not recommended, there is
still a risk of damage)；
Try to stay away from some physical layers such as TTL protocol at 2.4GHz , for example: USB3.0；
The antenna installation position has a great influence on the performance of the module. Make sure that the
antenna is exposed, preferably vertically. When the module is installed inside the shield, a high-quality antenna
extension cable can be used to extend the antenna outside;
The antenna must not be installed inside the metal case, which will greatly reduce the transmission distance.

Chengdu Ebyte Electronic Technology Co.,Ltd. E75-2G4M20S User Manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
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4.2 Programming
With JN5168 as core ic, the module has similar drive method to JN5168, please refer to official chipset datasheet for
details.
Please visit the official website of NPX to get the downloading tool (FlashGUI.exe), connect via E15-USB-T2.
Notes: The diagram shows that the module needs to be connected to the USB to UART module to download the firmware.
5. FAQ
5.1 Communication range is too short
The communication distance will be affected when obstacle exists.
Data lose rate will be affected by temperature, humidity and co-channel interference.
The ground will absorb and reflect wireless radio wave, so the performance will be poor when testing near ground.
Seawater has great ability in absorbing wireless radio wave, so performance will be poor when testing near the sea.
The signal will be affected when the antenna is near metal object or put in a metal case.
Power register was set incorrectly, air data rate is set as too high (the higher the air data rate, the shorter the
distance).
When the power supply at room temperature is lower than the recommended low voltage, the lower the voltage is,
the lower the transmitting power is.
Due to antenna quality or poor matching between antenna and module.
5.2 Module is easy to damage
Please check the power supply and ensure it is within the recommended range. Voltage higher than the peak will

Chengdu Ebyte Electronic Technology Co.,Ltd. E75-2G4M20S User Manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
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lead to a permanent damage to the module.
Please check the stability of power supply and ensure the voltage not to fluctuate too much.
Please make sure anti-static measures are taken when installing and using, high frequency devices have electrostatic
susceptibility.
Please ensure the humidity is within limited range for some parts are sensitive to humidity.
Please avoid using modules under too high or too low temperature.
5.3 Bit error rate is too high
When there are co-channel signal interference nearby, be away from interference sources or modify frequency and
channel to avoid interference;
The clock waveform on the SPI is not standard. Check whether there is interference on the SPI line. The SPI bus
should not be too long.
Unfavorable power supply may cause messy code. Make sure that the power supply is reliable.
Extension line and feeder with poor quality or too long ones will cause high bit error rate.
6. Production Guidance
6.1 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

Chengdu Ebyte Electronic Technology Co.,Ltd. E75-2G4M20S User Manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
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6.2 Reflow Soldering Curve
7 E75 Series
Model
IC
Frequency
Hz
TX power
dBm
Distance
km
Package
Size
mm
Antenna
E75-2G4M20S
JN5168
2.4G
20
1.0
SMD
16*30
PCB/IPX
E75-2G4M10S
JN5169
2.4G
10
0.5
SMD
16*26
PCB/IPX
8 Related Antenna
8.1 Antenna recommendation
Antenna plays an important role in the communication process. Inferior antennas often have a great impact on the
communication system. Therefore, we recommend some antennas that support our wireless modules and have excellent
performance and reasonable price.

Chengdu Ebyte Electronic Technology Co.,Ltd. E75-2G4M20S User Manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
9
Model
Type
Frequ
ency
Gain
Size
Feeder
Interface
Feature
Hz
dBi
mm
cm
TX2400-NP-5010
FPC
2.4G
2.0
10x50
-
IPEX
FPC antenna
TX2400-JZ-3
Rubber
2.4G
2.0
30
-
SMA-J
Straight antenna,ultra
short,omnidirectional
TX2400-JZ-5
Rubber
2.4G
2.0
50
-
SMA-J
Straight antenna,ultra
short,omnidirectional
TX2400-JW-5
Rubber
2.4G
2.0
50
-
SMA-J
Fixed bending antenna，
omnidirectional
TX2400-JK-11
Rubber
2.4G
2.5
110
-
SMA-J
Flexible antenna，omnidirectional
TX2400-JK-20
Rubber
2.4G
3.0
200
-
SMA-J
Flexible antenna，omnidirectional
TX2400-XPL-150
Sucker
2.4G
3.5
150
150
SMA-J
Small sucker antenna，high gain
8.2 Antenna selection
PCB（default）IPEX

Chengdu Ebyte Electronic Technology Co.,Ltd. E75-2G4M20S User Manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
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Revision history
Version
Date
Description
Operator
1.00
2018/8/30
Initial Version
huaa
1.10
2018/9/28
Model Series separation
huaa
About us
Website: www.ebyte.com Sales: [e-mail] Support: [e-mail]
Tel: [phone] Ext. 812 Fax: [phone]
Address: Innovation Center B333~D347, 4# XI-XIN road,High-tech district (west), Chengdu, Sichuan, China