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Summary of Contents for Ebyte E28-2G4M20S
- Page 1 E28-2G4M20S User Manual SX1281 2.4GHz 100mW SMD Wireless Module...
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Page 2: Table Of Contents
Chengdu Ebyte Electronic Technology Co., Ltd. E28-2G4M20S User Manual Contents 1.1 Brief introduction ..................................... 3 1.2 Features ....................................... 3 1.3 Application ......................................3 2.Specification and parameter ..................................4 2.1 Limit parameter ....................................4 2.2 Operating parameter ..................................4 3.Size and pin definition ....................................5 4. - Page 3 E28-2G4M20S 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.
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Page 4: Brief Introduction
Manual 1.Overview 1.1 Brief introduction E28-2G4M20S is a 2.4GHz bluetooth module designed by Chengdu Ebyte,with long distance and ultra-low power consumption. E28-2G4M20S is small-sized SMD module(pin spacing 1.27mm),built-in PCB antenna and IPEX antenna. High precision 52MHz crystal is used. Based on the original imported RF chip SX1278 from Semtech,the IC... -
Page 5: Specification And Parameter
Chengdu Ebyte Electronic Technology Co., Ltd. E28-2G4M20S User Manual 2.Specification and parameter 2.1 Limit parameter Performance Main parameter Remark Min. Max. Voltage over 3.6V will cause permanent Power supply（V） damage to module Chances of burn is slim when modules are Blocking power（dBm）... -
Page 6: Size And Pin Definition
Chengdu Ebyte Electronic Technology Co., Ltd. E28-2G4M20S User Manual 3.Size and pin definition Pin item Pin direction Pin application Power supply: 1.8~3.6V (Ceramic filter capacitor is advised to add) Ground, connecting to power supply reference ground MISO_TX Output SPI data output pin,can be used as UART transmitting pin... -
Page 7: Basic Operation
Chengdu Ebyte Electronic Technology Co., Ltd. E28-2G4M20S User Manual Ground, connecting to power supply reference ground 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 ... -
Page 8: Software Editing
Chengdu Ebyte Electronic Technology Co., Ltd. E28-2G4M20S User Manual 4.2 Software editing This module is based on SX1281,same drive way as SX1281,user can refer to SX1281 datasheet. DIO is general I/O port，see more in SX1281 datasheet. GDO 2 is generally configurated as IRQ function, IRQ pin can also be disconnected. The SPI query mode can be ... -
Page 9: Faq
Chengdu Ebyte Electronic Technology Co., Ltd. E28-2G4M20S User Manual 6.FAQ 6.1 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. -
Page 10: Reflow Soldering Curve
Chengdu Ebyte Electronic Technology Co., Ltd. E28-2G4M20S User Manual Average ramp-up rate(Tsmax to Tp) Average ramp-up rate 3℃/second max 3℃/second max Liquidous Temperature (TL) Liquid phase temp. 183℃ 217℃ Time（tL）Maintained Above（TL） Time below liquid phase line 60-90 sec 30-90 sec Peak temperature（Tp）... -
Page 11: Antenna Guidance
Chengdu Ebyte Electronic Technology Co., Ltd. E28-2G4M20S User Manual 9.Antenna guidance 9.1 Antenna recommendation The antenna is an important role in the communication process. A good antenna can largely improve the communication system. Therefore, we recommend some antennas for wireless modules with excellent performance and reasonable price. -
Page 12: Revision History
Technical support: support@cdebyte.com Documents and RF Setting download link: https://www.cdebyte.com Thank you for using Ebyte products! Please contact us with any questions or suggestions: info@cdebyte.com ------------------------------------------------------------------------------------------------- Address: Innovation Center D347, 4# XI-XIN Road,Chengdu, Sichuan, China Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.
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