Ebyte E220-900M22S Manuale utente

E220-900M22S

Llcc68 868 / 915MHz 160mw SPI SMD Lora module

Chengdu Ebyte Electronic Technology Co.,Ltd. E220-900M22S User Manual

Contents

Disclaimer............................................................................................................................................................. 2

Features..........................................................................................................................................................3

1 Introduction........................................................................................................................................................4

1.1 Brief Introduction.................................................................................................................................... 4

1.2 Application...............................................................................................................................................4

2 Specification and parameter...............................................................................................................................4

2.1 Limit parameter........................................................................................................................................4

2.2 Operating parameter................................................................................................................................ 5

3 Size and pin definition....................................................................................................................................... 6

4 Basic operation...................................................................................................................................................7

4.1 Hardware design...................................................................................................................................... 7

4.2 Programming........................................................................................................................................... 8

5 basic application.................................................................................................................................................8

5.1 Connection instructions to the emulator.................................................................................................. 8

6 FAQ.................................................................................................................................................................... 9

6.1 Communication range is too short........................................................................................................... 9

6.2 Module is easy to damage........................................................................................................................9

6.3 BER(Bit Error Rate) is high.....................................................................................................................9

7 Production guidance.........................................................................................................................................10

7.1 Reflow soldering temperature................................................................................................................10

7.2 Reflow soldering curve.......................................................................................................................... 11

8 E220 series....................................................................................................................................................... 11

9 Antenna recommendation.................................................................................................................................11

9.1 Recommendation................................................................................................................................... 11

Revision history.................................................................................................................................................. 12

About us.............................................................................................................................................................. 12

Chengdu Ebyte Electronic Technology Co.,Ltd. E220-900M22S User Manual

Disclaimer

EBYTE reserves all rights to this document and the information contained herein.

Products, names, logos and designs described herein may in whole or in part be

subject to intellectual property rights. Reproduction, use, modification or disclosure to

third parties of this document or any part thereof without the express permission of

EBYTE is strictly prohibited.

The information contained herein is provided “as is” and EBYTE assumes no

liability for the use of the information. No warranty, either express or implied, is given,

including but not limited, with respect to the accuracy, correctness, reliability and

fitness for a particular purpose of the information. This document may be revised by

EBYTE at any time. For most recent documents, visit www.ebyte.com.

Chengdu Ebyte Electronic Technology Co.,Ltd. E220-900M22S User Manual

Features

The measured distance can reach 5500m;

The maximum transmitting power is 160mw, and the software is multi-level adjustable;

Support global license free ism 868 / 915MHz band;

In LoRaTM mode, the data transmission rate is 1.76kbps ~ 62.5kbps;

FSK mode supports up to 300kbps data transmission rate;

FIFO has large capacity and supports 256 byte data cache;

Support spread spectrum factor sF5, SF6, sf7, SF8, Sf9, SF10, SF11;

Support 1.8V ~ 3.7V power supply, more than 3.3V power supply can guarantee the best performance;

Industrial standard design, support - 40 ~ 85 ° C long-term use;

Dual RF interface is optional (IPEX / stamp hole), which is convenient for secondary development and integration.

Chengdu Ebyte Electronic Technology Co.,Ltd. E220-900M22S User Manual

1 Introduction

1.1 Brief Introduction

E220-900m22s is an small module, self-developed based on the new

generation of LoRaTM RF chip llcc68, produced by Semtech company. It is

suitable for 868mhz and 915MHz LoRaTM wireless module and uses industrial

32mhz crystal oscillator.

Compared with the previous generation of LoRaTM transceiver, its

anti-jamming performance and communication distance have been further

improved. Because of its new LoRaTM modulation technology, its anti-jamming

performance and communication distance are far superior to the current FSK

and GFSK modulation products. The module is mainly aimed at smart home,

wireless meter reading, scientific research and medical and medium and long distance wireless communication

equipment. The product can cover a wide frequency range of 850 ~ 930mhz.

Because the module is a pure RF transceiver module, it needs to use MCU driver or special SPI debugging tool.

1.2 Application

Home security alarm and remote keyless entry;

Smart home and industrial sensors, etc;

Wireless alarm security system;

Building automation solutions;

Wireless industrial remote controller;

Health care products;

Advanced meter reading architecture (AMI);

Automotive industry applications.

2 Specification and parameter

2.1 Limit parameter

Main parameter

Performance

Remarks

Min

Max

Supply voltage (V)

3.7

Over 3.7V permanently burned module

Blocking power (DBM)

The burning probability is small in close range use

Working temperature (℃)

-40

+85

Industrial grade

Chengdu Ebyte Electronic Technology Co.,Ltd. E220-900M22S User Manual

2.2 Operating parameter

Main parameter

Performance

Remarks

Min

Type

Max

Operating voltage（V）

1.8

3.3

3.7

≥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

Industrial Design

Operating frequency（MHz）

850

868/915

930

Support ISM band

Power

Consump-

tion

TX current（mA）

130

Instantaneous power consumption

RX current（mA）

6.5

Sleep current （μA）

180

Software shutdown

Max TX power（dBm）

21.4

21.5

Receiving sensitivity（dBm）

-129

BW_L=250kHz，SF = 10，LORATM；

Air data rate（bps）

1.76k

62.5k

Controlled via user’s programming

Main parameter

Description

Remark

Reference distance

5500m

In clear and open environment, the antenna gain is 5dBi, the antenna

height is 2.5m, and the air speed is 2.4kbps.

FIFO

256Byte

Maximum length of single transmission

Crystal frequency

32MHz

Modulation mode

LoRa

Lora modulation is recommended

Packaging method

Chip mounted

Interface mode

Stamp hole

The spacing is 1.27mm

Communication interface

SPI

0-10Mbps

Dimensions

20* 14*2.8 mm

Including shield

RF interface

Stamp hole / IPEX

Chengdu Ebyte Electronic Technology Co.,Ltd. E220-900M22S User Manual

3 Size and pin definition

Pin No.

Item

Direction

Description

GND

Ground, connect to power reference ground

GND

Ground, connect to power reference ground

GND

Ground, connect to power reference ground

GND

Ground, connect to power reference ground

DIO3

Configurable universal IO port (see llcc68 manual for details)

RXEN

input

RF switch receive control pin, connect external MCU IO, high level

effective

TXEN

input

RF switch emission control pin, connected to external MCU IO or dio2,

high level effective

DIO2

Input / output

Configurable universal IO port (see llcc68 manual for details)

VCC

Power supply, range 1.8V ~ 3.7V (it is recommended to add ceramic filter

capacitor externally)

GND

Ground, connect to power reference ground

GND

Ground, connect to power reference ground

GND

Ground, connect to power reference ground

DIO1

Input / output

Configurable universal IO port (see llcc68 manual for details)

BUSY

output

For status indication (see llcc68 manual for details)

Chengdu Ebyte Electronic Technology Co.,Ltd. E220-900M22S User Manual

NRST

input

Chip reset trigger input pin, low level effective

MISO

output

SPI data output pin

MOSI

input

SPI data input pin

SCK

input

SPI clock input pin

NSS

input

The module chip selection pin is used to start a SPI communication

GND

Ground, connect to power reference ground

ANT

RF interface, stamp hole

GND

Ground, connect to power reference ground

For the pin definition, software driver and communication protocol of the module, please refer to the official llcc68 datasheet

of Semtech

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 that between the recommended supply voltage, if exceeding the maximum,

the module will be permanently damaged;

Please check the stability of the power supply. Voltage can not fluctuate greatly and frequently;

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

margin, so 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;

Bottom LayerHigh-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;

Chengdu Ebyte Electronic Technology Co.,Ltd. E220-900M22S User Manual

The mounting structure of antenna 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;

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

weakened.

4.2 Programming

This module is llcc68 + peripheral circuit, users can operate according to llcc68 chip book completely;

Dio1, dio2 and DIO3 are common IO ports, which can be configured into multiple functions. Dio2 can be connected

to TXEN, not to IO port of MCU, and is used to control RF switch emission. See llcc68 manual for details, and can

be suspended if not used;

The internal use of 32mhz passive crystal oscillator, without pin control, software program control can be;

The differences between llcc68 and sx1262 / sx1268 were as follows

1. Sx1262 / sx1268 supports spread spectrum factors sF5, SF6, sf7, SF8, Sf9, SF10, SF11 and SF12;

Llcc68 supports spread spectrum factors sF5, SF6, sf7, SF8, Sf9, SF10 and SF11.

2. Llcc68 can set the spread spectrum factor and receive bandwidth:

LoRa® Rx/Tx, BW = 125 – 250 – 500 kHz

LoRa®，SF = 5 - 6 - 7 - 8 - 9 for BW = 125 kHz ，

LoRa®，SF = 5 - 6 - 7 - 8 - 9 - 10 for BW = 250 kHz ，

LoRa®，SF = 5 - 6 - 7 - 8 - 9 - 10 - 11 for BW = 500 kHz；

5 basic application

5.1 Connection instructions to the emulator

Chengdu Ebyte Electronic Technology Co.,Ltd. E220-900M22S User Manual

6 FAQ

6.1 Communication range is too short

When there is a linear communication obstacle, the communication distance will be attenuated accordingly;

Temperature, humidity and co frequency interference will increase the packet loss rate;

The ground absorbs and reflects radio waves, and the test effect near the ground is poor;

Seawater has a strong ability to absorb radio waves, so the seaside test effect is poor.

If there are metal objects near the antenna or placed in the metal shell, the signal attenuation will be very serious;

Power register setting error, air speed setting too high (the higher the air speed, the closer the distance);

The lower the voltage is, the smaller the power is;

The matching degree between the antenna and the module is poor or the quality of the antenna itself is poor.

6.2 Module is easy to damage

Please check the power supply to ensure that it is between the recommended supply voltage. If it exceeds the

maximum value, the module will be permanently damaged.

Please check the stability of the power supply. The voltage should not fluctuate greatly and frequently.

Please ensure that the installation process of anti-static operation, high-frequency device electrostatic sensitivity.

Please ensure that the humidity should not be too high during installation and use, and some components are

humidity sensitive devices.

If there is no special requirement, it is not recommended to use it at too high or too low temperature.

6.3 BER(Bit Error Rate) is high

If there is interference of the same frequency signal nearby, stay away from the interference source or modify the

frequency and channel to avoid interference;

The clock waveform on SPI is not standard, check whether there is interference on SPI line, and SPI bus line should

not be too long;

If the power supply is not ideal, it may cause garbled code, so it is necessary to ensure the reliability of the power

supply;

If the quality of extension line and feeder is poor or too long, the bit error rate will be high;

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