Ebyte E75-2G4M20S Manuale utente

E75-2G4M20S User Manual

JN5168 Zigbee SMD Wireless Module

Chengdu Ebyte Electronic Technology Co.,Ltd. E75-2G4M20S User Manual

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

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]

3.6

Voltage over 3.6V will cause

permanent damage to module

Blocking power [dBm]

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

Frequency [MHz]

2405

2480

ISM band

Power

consumption

Transmitting current

（mA）

145

Instant power consumption

Receiving current

（mA）

Stand-by current

（μA）

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

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

ADC1

JN5168 input ADC pin（Refer to JN5168 Datasheet for more

details）

SPI-CLK

JN5168 SPI communication clock pin

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.

SPI-MOSI

I/O

JN5168 SPI input

SPI0-SE

SPI CS pin. It’s used to start a SPI communication.

DIO0

I/O

It can be configured as general IO port.（Refer to

JN5168 Datasheet for more details）

DIO1

I/O

It can be configured as general IO port.（Refer to

JN5168 Datasheet for more details）

DIO4

I/O

It can be configured as general IO port.（Refer to

JN5168 Datasheet for more details）

DIO5

I/O

It can be configured as general IO port.（Refer to

JN5168 Datasheet for more details）

DIO6

I/O

It can be configured as general IO port.（Refer to

JN5168 Datasheet for more details）

DIO7

I/O

It can be configured as general IO port.（Refer to

JN5168 Datasheet for more details）

DIO8

I/O

It can be configured as general IO port.（Refer to

JN5168 Datasheet for more details）

DIO9

I/O

It can be configured as general IO port.（Refer to

JN5168 Datasheet for more details）

DIO10

I/O

It can be configured as general IO port.（Refer to

JN5168 Datasheet for more details）

VDD

Power

positive

Power supply 2.0V ~ 3.6V DC（3.3V and an added external

ceramic filter capacitor are recommended.）

GND

Ground

Ground electrode. It connects to the power reference place.

DIO11

I/O

It can be configured as general IO port.（Refer to

JN5168 Datasheet for more details）

DIO12

I/O

It can be configured as general IO port.（Refer to

JN5168 Datasheet for more details）

DIO13

I/O

It can be configured as general IO port.（Refer to

JN5168 Datasheet for more details）

REST

It is reset pin.

DIO14

I/O

It can be configured as general IO port.（Refer to

JN5168 Datasheet for more details）

DIO15

I/O

It can be configured as general IO port.（Refer to

JN5168 Datasheet for more details）

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

DIO17

I/O

It can be configured as general IO port.（Refer to

JN5168 Datasheet for more details）

ADC2

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

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

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

Average ramp-up rate(Tsmax to Tp)

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

Time 25℃ to peak temperature

6 minutes max

8 minutes max

Chengdu Ebyte Electronic Technology Co.,Ltd. E75-2G4M20S User Manual

6.2 Reflow Soldering Curve

7 E75 Series

Model

Frequency

TX power

dBm

Distance

Package

Size

Antenna

E75-2G4M20S

JN5168

2.4G

1.0

SMD

16*30

PCB/IPX

E75-2G4M10S

JN5169

2.4G

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

Model

Type

Frequ

ency

Gain

Size

Feeder

Interface

Feature

dBi

TX2400-NP-5010

FPC

2.4G

2.0

10x50

IPEX

FPC antenna

TX2400-JZ-3

Rubber

2.4G

2.0

SMA-J

Straight antenna,ultra

short,omnidirectional

TX2400-JZ-5

Rubber

2.4G

2.0

SMA-J

Straight antenna,ultra

short,omnidirectional

TX2400-JW-5

Rubber

2.4G

2.0

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

SMA-J

Small sucker antenna，high gain

8.2 Antenna selection

PCB（default）IPEX

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