Ebyte E32-868T20S, E32-868T30S, E32-915T30S, E32-400T20S, E32-433T30S User Manual

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E32-433T20DC User Manual

SX1278 433MHz 100mW DIP Wireless Module

Chengdu Ebyte Electronic Technology Co,;Ltd E32-433T20DC user manual

CONTENT

1. OVERVIEW ..................................................................................................................................3

1.1 INTRODUCTION................................................................................................................................................................................3

1.2 FEAT URES .........................................................................................................................................................................................3

2. SPECIFICATION AND PARAMETER .....................................................................................4

2.1 LIMIT PARAMETER ..........................................................................................................................................................................4

2.2 OPERATING PARAMETER ................................................................................................................................................................4

3 SIZE AND PIN DEFINITION .........................................................................................................5

4 CONNECT TO MCU .......................................................................................................................6

5 FUNCTION DESCRIPTION ..........................................................................................................6

5.1 FIXED TRANSMISSION.....................................................................................................................................................................6

5.2 BROADCAST ING T RANSMISSION ...................................................................................................................................................7

5.6.1 Indication of UART output

...................................................................................................................................................8

5.6.2 Indication of wireless transmitting

.....................................................................................................................................8

5.6.3 Configuration procedure of module

....................................................................................................................................9

5.6.4 Notes for AUX

.........................................................................................................................................................................9

6 OPERATING MODE .................................................................................................................... 10

6.1 MODE SWITCH.............................................................................................................................................................................. 10

6.2 NORMAL MODE (MODE 0)........................................................................................................................................................... 11

6.3 WAKE-UP MODE (MODE 1).......................................................................................................................................................... 11

6.4 POWER-SAVING MODE (MODE 2) ............................................................................................................................................... 11

6.5 SLEEP MODE (MODE 3) ................................................................................................................................................................ 12

7 COMMAND FORMAT ................................................................................................................. 12

7.1 DEFAULT PARAMETERS................................................................................................................................................................ 12

7.2 READING OP ERATING PARAMETERS........................................................................................................................................... 13

7.3 READING VERSION NUMBER ....................................................................................................................................................... 13

7.4 RESET COMMAND......................................................................................................................................................................... 13

7.5 PARAMETER SETTING COMMAND .............................................................................................................................................. 13

8. HARDWARE DESIGN ................................................................................................................ 15

9 FAQ ................................................................................................................................................. 16

Chengdu Ebyte Electronic Technology Co,;Ltd E32-433T20DC user manual

9.1 COMMUNICATION RANGE IS TOO SHORT ................................................................................................................................... 16

9.2 MODULE IS EASY TO DAMAGE.................................................................................................................................................... 17

9.3 BER(BIT ERROR RAT E) IS HIGH................................................................................................................................................. 17

10 PRODUCTION GUIDANCE ..................................................................................................... 17

11 E32 SERIES.................................................................................................................................. 17

12 ANTENNA RECOMMENDATION ........................................................................................... 18

13 PACKAGE FOR BATCH ORDER ............................................................................................ 19

REVISION HISTORY...................................................................................................................... 20

ABOUT US ........................................................................................................................................ 20

Chengdu Ebyte Electronic Technology Co,;Ltd E32-433T20DC user manual

1. Overview

1.1 Introduction

E32-433T20DC is a wireless serial port module

(UART) based on SEMTECH's SX1278 RF chip. It has

multiple trans mission modes, working in the

410MHz~441MHz, (defau lt 433MHz), LoRa s pread

spectrum technology,

SX1278 features LoRa™, which will bring longer

communicat ion distance, and has the advantages of concentrated power dens ity, meanwh ile it has a very strong

confidentiality. the modules of 20dBm transmitting power adopt industrial grade crys ta l oscillators to ensure the stability

and consistency, its precision is lower than the widely adopted 10ppm. E32-433T20DC is in stable bulk production and

are widely applied in utility meters, IoT renovation, smart home, etc. The modules feature data encry ption and

compression. The data transmitted over the air features randomness. The encryption-decryption algorithm makes data

interception meaningless. Data compression enables shorter transmitting time and lower rate of being interfered, which

increases the reliability and trans mitting efficiency.

E32-433T20DC strictly fo llows design standards of FCC, CE, CCC and meets various RF certification

requirements for exporting.

1.2 Features

 Communication distance tested is up to 3km  Maximum transmission power of 100mW, software multi-level adjustable；  Support the global license-free ISM 433 MHz band；  Support air date rate of 0.3kbps ～19.2kbps；  Support new generation LoRa technology bas ed on SX1262；  Low power consumption for battery supplied applications ；  Support 3.3V~5.5V power supply, power supply over 5.0 V can guarantee the bes t performance ；  Indus trial grade standard des ign, s upport -40 ~ 85 °C for working over a long time；  IPEX and stamp hole optional, good for secondary development and integration.

1.3 Application

 Home s ecurity alarm and remote keyless entry；  Smart home and industrial sensors ；  Wireless alarm security sys tem；  Building automation solutions ；  Wireless indus trial-grade remote control；  Health care products；  Advanced Meter Reading Architecture(AMI)；  Automotive industry applications.

Chengdu Ebyte Electronic Technology Co,;Ltd E32-433T20DC user manual

2. Specification and parameter

2.1 Limit parameter

Main parameter

Performance

Remark

Min.

Max.

Power sup p ly （V）

5.2

Voltage over 5.2V will cause p ermanent damage to module

Blocking power（dBm）

-10

Chances of burn is slim when modules are used in short distance

Operating temperature（℃）

-40

2.2 Operating parameter

Main parameter

Performance

Remark

Min

Typ.

Max.

Operating voltage（V）

3.3

5.0

5.2

≥5.0 V 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（MHz）

410 - 525

Support ISM band

Power

consumptio

Transmitting current [mA]

106

Instant power

consumption

Instant power consumption

Receiving current [mA]

Turn-off current [μA]

- 4 -

Software is shut down

Max Tx power（dBm）

19.0 - 20.0

Receiving sens itivity（dBm）

-144

-146

-147

Air data rate is 2.4kbps

Air data rate（bps）

0.3k

2.4k

19.2k

Controlled via user’s p rogramming

Main parameter

Description

Remark

Distance for reference

3000m

Test condition：clear and open area, antenna gain: 5dBi， antenna height: 2.5m，air data rate: 2.4kbps

TX length

58 Byte

Maximum capacity of single package

Buffer

512 Byte

Modulation

LoRa™

Communication interface

TTL

@3.3V

Package

DIP

Connector

2.54mm

Size

21 * 36mm

Antenna

SMA-K

50 ohm impedance

Chengdu Ebyte Electronic Technology Co,;Ltd E32-433T20DC user manual

3 Size and pin definition

No.

Name

Direction

Function

Input

（weak pull-up）

Work with M1 to decide 4 working modes of module (not suspended, if not used, could be grounded).

Input

（weak pull-up）

Work with M0 to decide 4 working modes of module (not suspended, if not used, could be grounded).

RXD

Input

TTL UART inputs, connects to external (M CU, PC) TXD output pin. Can be configured as op en-drain or pull-up input .

TXD

Output

TTL UART outputs, connects to external RXD (MCU, PC) input

pin. Can be configured as open-drain or push-pull output

AUX

Output

To indicate module 's working status & wakes up the external

MCU. During the procedure of self-check initialization, the pin

Chengdu Ebyte Electronic Technology Co,;Ltd E32-433T20DC user manual

outputs low level. Can be configured as push-pull output (suspending is allowed).

VCC

Input

Power supply ：2.3~ 5.2V DC

GND

Input

Ground

Fixed orifice

4 Connect to MCU

No.

Description（STM8L MCU）

The UART module is TTL level.

For some MCU works at 5VDC, it may need to add 4-10K pull-up resistor for the TXD & AUX pin.

5 Function description

5.1 Fixed transmission

+ 14 hidden pages

Ebyte E32-868T20S, E32-868T30S, E32-915T30S, E32-400T20S, E32-433T30S User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual