Ebyte E32-400M20S User Manual
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Ebyte E32-400M20S User Manual

Sx1278 433/470mhz spi smd wireless module
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E32-400M20S
SX1278 433/470MHz SPI SMD Wireless Module
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Summary of Contents for Ebyte E32-400M20S

  • Page 1 E32-400M20S SX1278 433/470MHz SPI SMD Wireless Module...

  • Page 2: Table Of Contents

    7 Production guidance ................................12 7.1 Reflow soldering temperature ..........................12 7.2 Reflow soldering curve ............................12 8 E32 series ................................... 13 9 Antenna recommendation ..............................13 Revision history ..................................14 About us ....................................14 Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.

  • Page 3: Disclaimer

    E32-400M20S 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.

  • Page 4: Features

    Support 3.3V~5.5V power supply, power supply over 5 V can guarantee the best performance;  Industrial grade standard design, support -40 ~ 85 °C for working over a long time;  IPEX and stamp hole optional, good for secondary development and integration.  Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.

  • Page 5: Introduction

    Chengdu Ebyte Electronic Technology Co.,Ltd. E32-400M20S User Manual 1 Introduction 1.1 Brief Introduction E32-400M20S is a self-developed, 433/470MHz LoRa SMD wireless module with the maximum transmission power of 1W which is based on the SX1278 produced by Semtech in the United States.

  • Page 6: Specification And Parameter

    FIFO 256Byte Maximum length of single send Crystal Oscillator 32MHz Protocol LoRaTM(recommended) FSK/GFSK/MSK/GMSK/OOK Package Interface 1.27mm Stamp hole Communication interface 0~10Mbps Size 14 * 20 mm Antenna Stamp hole / IPEX 50 ohm impedance Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.

  • Page 7: Size And Pin Definition

    Chengdu Ebyte Electronic Technology Co.,Ltd. E32-400M20S User Manual 3 Size and pin definition Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.
  • Page 8 General IO port (see SX1276 manual for details) DIO5 Input/Output General IO port (see SX1276 manual for details) Ground DIO1 Input/Output General IO port (see SX1276 manual for details) DIO0 Input/Output General IO port (see SX1276 manual for details) Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.

  • Page 9: Basic Operation

    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 Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.

  • Page 10: Programming

    DIO_7 pin to low level and DIO_13, DIO_14 pins to high level;Before turning off, set DIO_7, DIO_13, DIO_14 pins to low; The register configuration can be reinitialized when the chip is idle for greater stability.  Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.

  • Page 11: Basic Application

    Due to antenna quality or poor matching between antenna and module.  6.2 Module is easy to damage Please check the power supply source, ensure it is 2.0V~3.6V, voltage higher than 3.6V will damage the module;  Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.

  • Page 12: Ber(Bit Error Rate) Is High

    Poor power supply may cause messy code. Make sure that the power supply is reliable;  The extension line and feeder quality are poor or too long, so the bit error rate is high.  Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.

  • Page 13: Production Guidance

    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 6℃/second max Time 25℃ to peak temperature 6 minutes max 8 minutes max 7.2 Reflow soldering curve Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.

  • Page 14: E32 Series

    Model No. Type Interface Function feature Rubber TX915-JZ-5 915M SMA-J Short straight &omnidirectional antenna Rubber TX915-JK-11 915M SMA-J Flexible &omnidirectional antenna Rubber TX915-JK-20 915M SMA-J Flexible &omnidirectional antenna Sucker TX915-XPL-100 915M SMA-J High gain antenna Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.

  • Page 15: Revision History

    Linson About us Technical support: support@cdebyte.com Documents and RF Setting download link: www.ebyte.com Thank you for using Ebyte products! Please contact us with any questions or suggestions: info@cdebyte.com ------------------------------------------------------------------------------------------------- Phone: +86 028-61399028 Web: www.ebyte.com Address: B5 Mould Park, 199# Xiqu Ave, High-tech District, Sichuan, China...

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