Ebyte E19 Series Operation & User’s Manual

E19-900M20S2 User Manual Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd. 2 Contents Disclaimer...............................................................................................................................................................................3 1 Introduction..........................................................................................................................................................................4 1.1 Brief Introduction............................................................................................................... ...

E19-900M20S2 User Manual Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd. 3 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 ...

E19-900M20S2 User Manual Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd. 4 1 Introduction 1.1 Brief Introduction E19-900M20S2 is an ultra-small 915MHz SMD LoRaTM wireless module independently developed based on the SX1276 produced by Semtech in the United States. It uses an industrial-grade high-precision 32MHz crystal oscillator. Because the original imported SX1276 is the core of the module, its stability has won unanimous praise from users, and there is no need to worry about compatibility. Because of its advanced LoRaTM modulation technology, its anti-jamming performance and comm ...

E19-900M20S2 User Manual Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd. 5 2 Specification and parameter 2.1 Limit parameter The main parameters Value Remark Min. Max. Power supply voltage (V) 0 3.6 Over 3.6V will permanently burn the module Blocking power (dBm) - 10 It is less likely to burn when used at close range Working temperature (℃) -40 +85 Industrial grade 2.2 Operating Parameter The main parameters Value Remark Min. Typical Max. Working voltage (V) 2.3 3.3 3.6 ≥3.3V can guarantee output power Communication level (V) - 3.3 - Using 5V TTL is risky to burn Working temperat ...

E19-900M20S2 User Manual Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd. 6 The main parameters Value Remark Reference distance 5000m Clear and open, antenna gain 5dBi, antenna height 2.5 meters, air rate 1kbps FIFO 256Byte Maximum length of single transmission Crystal frequency 32MHz - Modulation LoRa (recommended) FSK, GFSK, MSK, GMSK, LoRa TM, OOKTM Packaging method SMD - Interface method 1.27mm - Communication Interface SPI 0～10Mbps Dimensions 15*15mm - Antenna interface Stamp hole Equivalent impedance is about 50Ω ...

E19-900M20S2 User Manual Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd. 7 3 Size and pin definition Pin No. Item Direction Description 1 GND - Ground wire, connected to the power reference ground 2 GND - Ground wire, connected to the power reference ground 3 GND - Ground wire, connected to the power reference ground 4 GND - Ground wire, connected to the power reference ground 5 DIO0 Input/Output Configurable general IO port (see SX1276 manual for details) 6 DIO1 Input/Output Configurable general IO port (see SX1276 manual for details) 7 DIO2 Input/Output Configurable general IO port ...

E19-900M20S2 User Manual Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd. 8 4 Basic operation 4.1 Hardware Design  It is recommended to use a DC stabilized power supply to supply power to the module. The power ripple coefficient should be as small as possible, and the module must 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 it is within the recommended power supply voltage. If it exceeds the ...

E19-900M20S2 User Manual Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd. 9 4.2Programming  DIO0, DIO1, DIO2, DIO3, and DIO5 are general-purpose I/O ports, which can be configured into multiple functions. Refer to the SX1276 manual for details.  When the module is sending, the DIO4 pin of SX1276 is set low, when the module is receiving, the DIO4 pin of SX1276 is set high, which requires the customer to write software to control  The SPI communication rate should not be set too high, usually 1Mbps is recommended;  The register configuration can be reinitialized when the chi ...

E19-900M20S2 User Manual Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd. 10 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;  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 ...

E19-900M20S2 User Manual Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd. 11 7 Soldering Guide 7.1 Reflow Soldering Temperature Profile Feature Curve characteristics Sn-Pb Assembly Pb-Free Assembly Solder Paste Solder paste Sn63/Pb37 Sn96.5/Ag3/Cu0.5 Preheat Temperature min （Tsmin） Min preheating temp. 100℃ 150℃ Preheat temperature max (Tsmax) Mx preheating temp. 150℃ 200℃ Preheat Time (Tsmin to Tsmax)(ts) Preheating time 60-120 sec 60-120 sec Average ramp-up rate(Tsmax to Tp) Average ramp-up rate 3℃/second max 3℃/second max Liquidous Temperature (TL) Liquid phase temp ...

E19-900M20S2 User Manual Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd. 12 E19 Series Modules Model No. IC Frequency Tx power Distance Package Pin Type Hz dBm km E19-433M20S2 SX1278 433M 20 5 SMD Stamp hole E19-433M20SC SX1278 433M 20 5 SMD Stamp hole E19-868M20S SX1276 868M 20 5 SMD Stamp hole E19-915M20S SX1276 915M 20 5 SMD Stamp hole E19-433M30S SX1278 433M 30 10 SMD Stamp hole E19-868M30S SX1276 868M 30 10 SMD Stamp hole/IPEX E19-915M30S SX1276 915M 30 10 SMD Stamp hole/IPEX 9 Antenna Recommendation 9.1 Recommendation Antenna plays an important role in wireless communication. O ...

E19-900M20S2 User Manual Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co., Ltd. 13 Revision history Version Date Description Issued by 1.0 2020-11-30 Initial version Linson About us Technical support: [email protected] Documents and RF Setting download link: www.ebyte.com Thank you for using Ebyte products! Please contact us with any questions or suggestions: [email protected] ------------------------------------------------------------------------------------------------- Fax: 028-64146160 ext. 821 Web: www.ebyte.com Address:Building B5, Mould Industrial Park, 199# Xiqu Ave, West High-tec ...