Ebyte E76-433M20S User Manual

E76-433M20S User Manual

EFR32 433MHz SMD Wireless Module

Chengdu Ebyte Electronic Technology Co.,Ltd. E76-433M20S User Manual

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1. Product Overview.................................................................................................................................................................................2

1.1 Brief Introduction......................................................................................................................................................................2

1.2 Feature .........................................................................................................................................................................................2

1.3 Application .................................................................................................................................................................................3

2. Specification and para meter ...............................................................................................................................................................3

2.1 Limit parameter .........................................................................................................................................................................3

2.2 Operating para meter .................................................................................................................................................................3

3. Size and pin defin ition .........................................................................................................................................................................4

4. Basic Operation ....................................................................................................................................................................................6

4.1 Hardware Design ...............................................................................................................................................................6

4.2 Software Progra mming ............................................................................................................................................................6

5. FAQ.........................................................................................................................................................................................................7

5.1 Communication range is too short .........................................................................................................................................7

5.2 Module is easy to damage........................................................................................................................................................7

5.3 High bit error rate......................................................................................................................................................................7

6. Welding operation guidance ...............................................................................................................................................................8

6.1 Reflow Soldering Temperature ...............................................................................................................................................8

6.2 Reflow Soldering Curve...........................................................................................................................................................8

7. Related Model .......................................................................................................................................................................................9

8. Antenna Type.........................................................................................................................................................................................9

8.1 Antenna recommendation.....................................................................................................................................................9

Revision history ..................................................................................................................................................................................... 10

About us .................................................................................................................................................................................................. 10

Chengdu Ebyte Electronic Technology Co.,Ltd. E76-433M20S User Manual

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1. Product Overview

1.1 Brief Introduction

The E76-433M20S is a independently developed

433MHz SMD wireless module bas ed on EFR32

manufactured by Silicon Labs.

Internal integration of 32-bit ARM microcontroller

and high-performance wireless trans ceiver. This series of

products use high precision wide temperature crys tal and

40MHz industrial grade high precision low temperature

drift active crystal oscillator to ensure its industrial

characteristics and stability. The module brings out all the

IO ports of the microcontroller. The chip comes with a

high-performance 32-bit ARM® Cortex®-M4 core,

integrated internal power amplifier, powerful peripherals and up to 31 GPIOs for multi-faceted development. EFR32 has

great potential to become the preferred wireless controller for future intelligent furniture, Internet of Things

trans formation and industrial automation. We used a 40MHz high precision low temperature drift active crystal. RF

related parameters can be certified by FCC, CE, CCC and other related domestic and foreign sources to meet export

demand.

Because this module is a pure hardware SoC module, us ers need to program it before they can use it.

1.2 Feature

 Communication distance tested is up to 2.5km；  Maximum transmiss ion power of 100mW, software multi-level adjus table；  Support for the global licens e-free ISM 433MHz band ；  Support air date rate of 0.1kbps～2Mbps；

 Built-in high performance low power Cortex-M4 proces s or;  Rich resources, 256KB FLASH, 32KB RAM;  Support 1.85V~3.8V power supply, more than 3.3V power supply can guarantee the bes t performance;  Industrial grade standard design, support -40 ~ 85 °C for working over a long time；  IPEX and stamp hole are optional, which is convenient for s econdary development and integration.

Chengdu Ebyte Electronic Technology Co.,Ltd. E76-433M20S User Manual

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1.3 Application

 Smart Home and Indus trial Sensors ；  Security sys tem, pos itioning system

 Building automation solutions ；  Wireless remote control, UAV;  Wireless Game Remote Controller;  Healthcare products;  Wireless voice, wireless headphones;

 Advanced Meter Reading Architecture(AMI)；  Automotive industry applications .

2. Specification and parameter

2.1 Limit parameter

Main parameter

Performance

Remark

Min.

Max.

Power supply（V）

0

3.8

Voltage over 3.8V 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

Remark

Min.

Typ.

Max.

Operating voltage（V）

1.85

3.3

3.8

≥3.3V ensures output power

Communication level（V）

-

3.3

-

For 5V TTL, it may be at risk of burning down

Operating temperature（℃）

-40 - 85

Industrial design

Operating frequency（GHz）

420 - 450

Support ISM band

Power

consumption

TX current（mA）

-

100

-

Instant power consumption

RX current（mA）

-

17

-

Sleep current（μA）

- 1 -

Software is shut down

Max Tx power（dBm）

19.6

20.0

20.5

-

Receiving sensitivity（dBm）

-106.5

-107

-108

Air data rate is 1kbps

Air data rate（bps）

0.1k

-

2M

Controlled via user’s p rogramming

Chengdu Ebyte Electronic Technology Co.,Ltd. E76-433M20S User Manual

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Main parameter

Description

Remark

Distance for reference

2500m

Test condition：clear and open area, antenna gain: 5dBi， antenna height: 2.5m，air data rate: 1kbps

Crystal frequency

40MHz

-

Modulation

GFSK(recommended)

-

Package

SMD

-

Connector

1.27mm

Stamp hole

IC name

EFR32FG1P131F256GM48

-

FLASH

256 KB

-

RAM

32 KB

-

kernel

Cortex-M4

-

Size

16 * 26 mm

-

Antenna Interface

Stamp hole / IPEX

50 ohm impedance

3. Size and pin definition

Chengdu Ebyte Electronic Technology Co.,Ltd. E76-433M20S User Manual

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No.

Name

Direction

Function

1

GND

Input/Output

Ground wire, connected to the power reference ground

2

GND

Input/Output

Ground wire, connected to the power reference ground

3

GND

Input/Output

Ground wire, connected to the power reference ground

4

RESETN

Input

Reset pin

5

PD9

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

6

PD10

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

7

PD11

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

8

PD12

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

9

PD13

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

10

PD14

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

11

PD15

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

12

PA0

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

13

PA1

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

14

PA2

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

15

PA3

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

16

GND

Input/Output

Ground wire, connected to the power reference ground

17

PA4

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

18

PA5

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

19

PB11

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

20

PB12

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

21

PB13

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

22

PB14

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

23

PB15

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

24

PC6

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

25

PC7

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

26

PC8

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

27

GND

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

28

PC9

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

29

PC10

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

30

PC11

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

31

PF0

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

32

PF1

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

33

PF2

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

34

PF3

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

35

PF4

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

36

PF5

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

37

PF6

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

38

PF7

Input/Output

Configurable universal IO p ort (see EFR32 manual for details)

39

VCC

Input/Output

power sup p ly positive reference, voltage range is 1.8V-3.8V.

40

GND

Input/Output

Ground wire, connected to the power reference ground

41

ANT

Input/Output

Antenna interface, st amp hole (50 ohm characteristic impedance)

Chengdu Ebyte Electronic Technology Co.,Ltd. E76-433M20S User Manual

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42

GND

Input/Output

Ground wire, connected to the power reference ground

4. Basic Operation

4.1 Hardware Design

 It is recommended to use DC stabilized power supply to s upply power to the module. The power s upply ripple

coefficient is as small as pos s ible, and the module needs to be reliably grounded.

 Please pay attention to the correct connection of the positive and negative poles of the power s upply. If the reverse

connection is connected, the module may be permanently damaged.

 Please check the power s upply to ensure that between the recommended s upply voltage, if exceeding the maximu m,

the module will be permanently damaged.

 Please check the stability of the power s upply, the voltage can not be significantly frequent .  When designing the power s upply circuit for the module, it is often recommended to reserve more than 30% of the

margin, and the whole machine is beneficial for long -term stable operation.

 The module should be as far away as poss ible from the power s upply, transformers, high -frequency wiring and other

parts with large electromagnetic interference.

 High-frequency digital traces , high-frequency analog traces, and power traces must be avoided under the module. If

it is neces sary to pas s through the module, ass ume that the module is soldered to the Top Layer, and the copper is

spread on the Top Layer of the module contact part(All copper-covered and well grounded), and mus t be close to the

digital part of the module and routed in the Bottom Layer.

 As suming the module is soldered or placed in the Top Layer, it is also wrong to randomly route the Bottom Layer or

other layers, which will affect the module's spurs and receiving s ensitivity to varying degrees .

 As suming that there are devices with large electromagnetic interference around the module, the performance of t he

module will also be greatly affected. According to the intensity of the interference, it is suggested to stay away from

the module appropriately. If circumstances permit, appropriate isolation and shielding can be done.

 As sume that there are traces with large electromagnetic interference around the module (high -frequency digital, high-

frequency analog, power trace), which 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 necess ary, 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 s tay away from some physical layers and also have a 2.4GHz TTL protocol, for example: USB3.0  The antenna mounting structure has a great influence on the performance of the module. It is necessary to ens ure that

the antenna is exposed, preferably vertically upward. When the module is mounted ins ide the case, use a good antenna

extension cable to extend the antenna to the outside of the case.

 The antenna must not be installed ins ide the metal case, which will greatly reduce the transmission distance.

4.2 Software Programming

 The core of this module is EFR32, Its driving mode is exactly the s ame as EFR3. Users can operate according to

EFR32 chip datas heet.

 Burning program: The module is SoC with its own GPIO port, uses the J-LINK special downloader for program

Chengdu Ebyte Electronic Technology Co.,Ltd. E76-433M20S User Manual

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download

 Program download interface definition:

E76 pin

J-LINK interface

VCC

PF0

SWCLK

PF1

SWDIO

GND

5. FAQ

5.1 Communication range is too short

 The communication distance will be affected when obs tacle exists .  Data lose rate will be affected by temperature, humidity and co-channel interference.  The ground will abs orb and reflect wireless radio wave, so the performance will be poor when tes ting near ground.  Sea water has great ability in abs orbing 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 meta l case.  The signal will be affected when the antenna is near metal object or put in a metal case.  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 ens ure it is within the recommended range. Voltage higher than the peak will lead

to a permanent damage to the module.

 Please check the stability of power supply and ens ure the voltage not to fluctuate too much.  Please make sure anti-static measures are taken when installing and us ing, high frequency devices have electrostatic

susceptibility.

 Please ensure the humidity is within limited range for some parts are sens itive to humidity.  Please avoid us ing modules under too high or too low temperature.

5.3 High bit error rate

 There are co-channel signal interference nearby, keep away from interference sources or modify frequency, channel

to avoid interference.

 Unsatisfactory power supply may also cause garbled characters, and ensure the reliability of the power supply.  If the extens ion cable or feeder is of poor quality or too long, the bit error rate will be high.

Chengdu Ebyte Electronic Technology Co.,Ltd. E76-433M20S User Manual

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6. Welding operation guidance

6.1 Reflow Soldering Temperature

Profile Feature

Curve feature

Sn-Pb Assembly

Pb-Free Assembly

Solder Paste

solder paste

Sn63/Pb37

Sn96.5/Ag3/Cu0.5

Preheat Temperature min (Tsmin)

Minimum preheating t emperature

100℃

150℃

Preheat temperature max (Tsmax)

Maximum preheating t emperature

150℃

200℃

Preheat Time (Tsmin to Tsmax)(ts)

Preheating t ime

60-120 sec

Average ramp-up rate(Tsmax to Tp)

Average rising rate

3℃/second max

Liquidous Temperature (TL)

Liquid phase temperature

183℃

217℃

Time(tL)Maintained Above(TL)

Time above liquidus

60-90 sec

30-90 sec

Peak temperature(Tp)

Peak temperature

220-235℃

230-250℃

Aveage ramp-down rate(Tp to Tsmax)

Average descent rate

6℃/second max

Time 25℃ to peak temperature

Time of 25 ° C to peak temperature

6 minutes max

8 minutes max

6.2 Reflow Soldering Curve

Chengdu Ebyte Electronic Technology Co.,Ltd. E76-433M20S User Manual

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7. Related Model

Model

Chip

Frequency

Hz

Transmit

power

dBm

Test

distance

km

Air Data

rate

Packaging

Size

mm

Antenna

Type

E76-2G4M20S

EFR32

2.4G

20

2.5

0.1k~2M

SMD

17.5 *

28.7

PCB/IPEX

E76-868M20S

EFR32

868M

20

2.5

0.1k~2M

SMD

16 * 26

Stamp

hole/IPEX

E76-915M20S

EFR32

915M

20

2.5

0.1k~2M

SMD

16 * 26

Stamp

hole/IPEX

E76-433M20S

EFR32

433M

20

2.5

0.1k~2M

SMD

16 * 26

Stamp

hole/IPEX

8. Antenna Type

8.1 Antenna recommendation

The antenna plays an important role in the communication proces s . The inferior antenna often has a great impact on the

communication system. Therefore, we recommend some antennas that support our wireless modules and have excellent

performance and reasonable price.

Product

Type

Frequency

Hz

Interface

Gain

dBi

Size

Feeder

Features

TX433-NP-4310

Soft PCB

antenna

433M

SMA-J

2

43.8*9.5 mm

-

Built-in flexible FPC soft

antenna

TX433-JW-5

Rubber antenna

433M

SMA-J

2

50mm

-

Flexible, Omnidirectional

TX433-JWG-7

Rubber antenna

433M

SMA-J

2.5

75mm

-

Flexible, Omnidirectional

TX433-JK-20

Rubber antenna

433M

SMA-J

3

210mm

-

Flexible, Omnidirectional

TX433-JK-11

Rubber antenna

433M

SMA-J

2.5

110mm

-

Flexible, Omnidirectional

TX433-XP-200

Sucker antenna

433M

SMA-J

4

19cm

200cm

High Gain

TX433-XP-100

Sucker antenna

433M

SMA-J

3.5

18.5cm

100cm

High Gain

TX433-XPH-300

Sucker antenna

433M

SMA-J

6

96.5cm

300cm

High Gain

TX433-JZG-6

Rubber antenna

433M

SMA-J

2.5

52mm

-

Ultra short straight，

Omnidirectional

TX433-JZ-5

Rubber antenna

433M

SMA-J

2

52mm

-

Ultra short straight，

Omnidirectional

Chengdu Ebyte Electronic Technology Co.,Ltd. E76-433M20S User Manual

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Revision history

Version

Date

Description

Issued by

1.00

2018/8/30

Original version

huaa

1.10

2018/9/28

Model No. sp lit

huaa

About us

Technical s upport: s upport@cdebyte.com Documents and RF Setting download link: www.ebyte.com Thank you for us ing Ebyte products! Please contact us with any questions or sugges tions: info@cdebyte.com

------------------- -- -- --- -- -- -- --- ----------------------------- -- -- --- -- -- --- -- ----------------Fax: 028-64146160 ext. 821 Web: www.ebyte.com Address: Innovation Center D347, 4# XI-XIN Road,Chengdu, Sichuan, China