Ebyte E73-2G4M04S1D User manual

E73-2G4M04S1D User Manual

nRF51822 BLE 4.2/5.0 SMD Wireless Module

Chengdu Ebyte Electronic Technology Co., Ltd. E73-2G4M04S1D User manual 
 
 Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd. 
 

目录 
OVERVIEW ..................................................................................................................................2
1 INTRODUCTION..........................................................................................................................2
2 FEAT URES.........................................................................................................................................................................................2
3 APPLICATION...................................................................................................................................................................................2
SPECIFICATION AND PARAMETER .....................................................................................3
1 LIMIT  PARAMETER..........................................................................................................................................................................3
2 OPERATING PARAMETER................................................................................................................................................................3
SIZE AND PIN DEFINITION .....................................................................................................4
BASIC OPERATION....................................................................................................................5
1 HARDWARE DESIGN........................................................................................................................................................................5
2 SOFTWARE PROGRAMMING...........................................................................................................................................................6
FAQ.................................................................................................................................................7
1 COMMUNICATION RANGE IS TOO SHORT ......................................................................................................................................7
2 MODULE IS EASY TO DAMAGE.......................................................................................................................................................8
3 HIGH BIT ERROR RATE ....................................................................................................................................................................8
WELDING OPERATION GUIDANCE .....................................................................................8
1 REFLOW SOLDERING TEMP ERAT URE ...........................................................................................................................................8
2 REFLOW SOLDERING CURVE .........................................................................................................................................................9
REVISION HISTORY...................................................................................................................... 11 
ABOUT US ........................................................................................................................................ 11 
 
 

Chengdu Ebyte Electronic Technology Co., Ltd. E73-2G4M04S1D User manual

1. Overview

1.1 Introduction

E73-2G4M04S1D is a SMD bluetooth wireless module based on

NORDIC's nRF51822 RF chip. NRF51822 has high-performance ARM

CORTEX-M 0 core and Bluetooth 4.2 RF transceiver and protocol stack, and

has abundant peripheral resources such as UART, I2C, SPI, ADC, DMA,

PWM, etc.The module brings out almost all IO ports, which is convenient

for users to conduct multi-faceted development, Please see pin definitions for

details. The module has built-in PCB antenna and can connect other antennas

through IPEX. The product has obtained FCC, CE, RoHS and other

international authoritative certification reports, users do not need to worry about its performance. We use a 32MHz high

precision low temperature drift active crystal to ensure its industrial properties and s tability.

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

1.2 Features

Communication distance tested is up to 100m；

Maximum transmission power of 2.5mW, software multi-level adjustable；

Support bluetooth 4.2 and bluetooth 5.0；

Built-in 32.768 kHz clock crystal oscillator；

Support for the global license-free ISM 2.4GHz band；

Rich resources, 512KB FLASH, 64KB RAM;

Support 2.0V~3.6V power supply, more than 3.3V power supply can guarantee the best performan ce;

Industrial grade standard design, support -40 ~ 85 °C for a long time；

Support onboard PCB antenna and IPEX interface, users can choose according to their needs ；

1.3 Application

Smart home and industrial sensors；

Security system and positioning system;

Wireless remote control, UAV；

Wireless Game Remote Controller；

Health care products；

Wireless voice, wireless headset；

Automotive industry applications.

Chengdu Ebyte Electronic Technology Co., Ltd. E73-2G4M04S1D User manual

2. Specification and parameter

2.1 Limit parameter

Main parameter

Performance

Remark

Min.

Max.

Power 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

Operatingtemperature（℃）

-40

2.2 Operating parameter

Main parameter

Performance

Remark

Min.

Typ.

Max.

Operatingvoltage（V）

1.8

3.3

3.6

≥3.3 V ensures output power

Communication level（V）

3.0

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

down

Operatingtemperature（℃）

-40

Industrial design

Operatingfrequency（MHz）

2379

2430

2496

Support ISM band

Power

consumpti

TX current（mA）

Instant powerconsumption

RX current（mA）

Sleep current （μA）

Software is shut down

MaxTxpower（dBm）

3.8

4.3

Receiving sensitivity（dBm）

-95.4

-96.0

-96.8

Air data rate is 1Mbps

Main parameter

Description

Remark

Distance for reference

100m

Test condition：clear and openarea, antenna gain: 5dBi，

antenna height: 2.5m，air data rate: 1Mbps

Crystalfrequency

24MHz /32.768KHz

Support protocal

BLE 4.2/5.0

Package

SMD

Connector

1.27mm

nRF51822-QFAA/QFN48

FLASH

256KB

RAM

16KB

kernel

ARM CORTEX-M0

Size

17.5 * 28.7 mm

Antenna

Onboard PCB / IPEX

Equivalent impedance is about 50 ohms

Chengdu Ebyte Electronic Technology Co., Ltd. E73-2G4M04S1D User manual

3. Size and pin definition

No.

Pin item

Pin direction

Application

P0.21

Input/Output

MCU GPIO

P0.22

Input/Output

MCU GPIO

P0.23

Input/Output

MCU GPIO

P0.24

Input/Output

MCU GPIO

P0.25

Input/Output

MCU GPIO

P0.28

Input/Output

MCU GPIO

P0.29

Input/Output

MCU GPIO

P0.30

Input/Output

MCU GPIO

P0.00

Input/Output

MCU GPIO

P0.01

Input/Output

MCU GPIO

VCC

Power supply 2.1~3.6V DC（Note:The voltage higher 3.6V is forbidden）

Chengdu Ebyte Electronic Technology Co., Ltd. E73-2G4M04S1D User manual

GND

Ground electrode, connect to powerreference ground

GND

Ground electrode, connect to powerreference ground

P0.02

0.9 V Digital power supply decouplingcontroller

P0.03

Input/Output

MCU GPIO

P0.04

Input/Output

MCU GPIO

P0.05

Input/Output

MCU GPIO

P0.06

Input/Output

MCU GPIO

P0.07

Input/Output

MCU GPIO

P0.08

Input/Output

MCU GPIO

P0.09

Input/Output

MCU GPIO

P0.10

Input/Output

MCU GPIO

P0.11

Input/Output

MCU GPIO

GND

Input/Output

MCU GPIO

GND

Input/Output

MCU GPIO

P0.12

Input/Output

MCU GPIO

P0.13

Input/Output

MCU GPIO

P0.14

Input/Output

MCU GPIO

P0.15

Input/Output

MCU GPIO

P0.16

Input/Output

MCU GPIO

SWDIO/

nRESET

Input

Serial line debugging and programming debugging / MCU reset, low level enable

SWDCLK

Input

Serial Line Debugging / Clock Input Debugging and Programming

P0.17

Input/Output

MCU GPIO

P0.18

Input/Output

MCU GPIO

P0.19

Input/Output

MCU GPIO

P0.20

Input/Output

MCU GPIO

★For more details, please refer to《nRF51822Datasheet》in NORDIC ★

4. Basic Operation

4.1 Hardware Design

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

coefficient is as small as possible, and the module needs to be reliably grounded.

Please pay attention to the correct connection of the posit ive and negative poles of the power supply. If the reverse

connection is connected, the module may be permanently damaged.

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

the module will be permanently damaged.

Please check the stability of the power supply, the voltage can not be significantly frequent.

When designing the power supply circuit for the module, it is often recommended to reserve more than 30% of the

Chengdu Ebyte Electronic Technology Co., Ltd. E73-2G4M04S1D User manual

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

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 traces, high-frequency analog traces, and power traces 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(All copper-covered and well grounded), and must be close to the

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

Assuming 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 sensitivity to varying degrees.

Assume 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 modu le. It is recommended to stay

away from the module according to the strength of the interference. If possible, you can do it properly. Isolation and

shielding

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 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 ensure that

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

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

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

4.2 Software Programming

The core of this module is nRF52832, which is completely equivalent to nRF52832. Users can operate according to

the nRF52832 chip manual (see nRF52832 manual for details).

Because the officially provided programming tool nRFgo Studio has poor compatibility, it is recommended to use J -

LINK-V8 or above for program burning.

About the issue that the old model can be programmed, while the new model can't be programmed, It is because the

new model being added with read/write protection during production. It needs to be properly connected to the line

and then use the official nRFgo Studio for Recover (Jlink supports the official nRFgo). Studio), as shown below:

Chengdu Ebyte Electronic Technology Co., Ltd. E73-2G4M04S1D User manual

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.

Sea water 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.

Chengdu Ebyte Electronic Technology Co., Ltd. E73-2G4M04S1D User manual

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 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 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 extension cable or feeder is of poor quality or too long, the bit error rate will be high.

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 Temperaturemin （Tsmin）

Minimum preheating temperature

100℃

150℃

Preheat temperaturemax (Tsmax)

Maximum preheating temperature

150℃

200℃

Preheat Time (Tsmin to Tsmax)(ts)

Preheating time

60-120 sec

Average ramp-up rate(TsmaxtoTp)

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

Chengdu Ebyte Electronic Technology Co., Ltd. E73-2G4M04S1D User manual

6.2 Reflow Soldering Curve

7. Related Model

Model

Chip

Frequency

Transmit

power

dBm

Test

distance

Air Data

rate

Packaging

Size

Antenna

Type

E73-2G4M08S1C

nRF52840

2.4G

0.1

BLE 4.2/5.0

SMD

13.0 * 18.0

PCB/IPX

E73-2G4M04S1A

nRF52810

2.4G

0.1

BLE 4.2

PCB/IPEX

17.5 * 28.7

PCB/IPX

E73-2G4M04S1D

nRF51822

2.4G

0.1

BLE 4.2

PCB/IPX

17.5 * 28.7

PCB/IPX

E73-2G4M04S1B

nRF52832

2.4G

0.1

BLE 4.2/5.0

PCB/IPX

17.5 * 28.7

PCB/IPX

8. Antenna Type

8.1 Antenna recommendation

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

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

performance and reasonable price.

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