EBYTE E32-400M20S SX1278 433-470MHz SPI SMD Wireless Module Instructions
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E01-2G4M27D 产品规格书 v1.0
E32-400M20S
May 7, 2021 — 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 ...
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E32-400M20S SX1278 433/470MHz SPI SMD Wireless Module 1 Contents Disclaimer...............................................................................................................................................................................2 Features...........................................................................................................................................................................3 1 Introduction......................................................................................................................................................................... 4 1.1 Brief Introduction..................................................................................................................................................... 4 1.2 Application................................................................................................................................................................4 2 Specification and parameter................................................................................................................................................ 5 2.1 Limit parameter........................................................................................................................................................ 5 2.2 Operating parameter................................................................................................................................................. 5 3 Size and pin definition......................................................................................................................................................... 6 4 Basic operation.................................................................................................................................................................... 8 4.1 Hardware design....................................................................................................................................................... 8 4.2 Programming............................................................................................................................................................ 9 5 Basic application............................................................................................................................................................... 10 5.1 Hardware design and circuit schematic diagram....................................................................................................10 6 FAQ................................................................................................................................................................................... 10 6.1 Communication range is too short..........................................................................................................................10 6.2 Module is easy to damage..................................................................................................................................... 10 6.3 BER(Bit Error Rate) is high................................................................................................................................... 11 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�2021Chengdu Ebyte Electronic Technology Co.,Ltd. 1 Chengdu Ebyte Electronic Technology Co.,Ltd. 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. 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. Copyright �2012�2021Chengdu Ebyte Electronic Technology Co.,Ltd. 2 Chengdu Ebyte Electronic Technology Co.,Ltd. Features E32-400M20S User Manual The measured communication distance can reach 5km; Maximum transmission power of 100mW, software multi-level adjustable; Support 433/470 MHz band; Support data transmission rate between 0.018K and 37.5Kbps in LoRaTM mode; Support data transmission rate of up to 300kbps in FSK mode; Support for multiple modulation mode, LoRaTM/FSK/GFSK/MSK/GMSK/OOK; Large FIFO capacity, support 256Byte data cache; 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�2021Chengdu Ebyte Electronic Technology Co.,Ltd. 3 Chengdu Ebyte Electronic Technology Co.,Ltd. 1 Introduction E32-400M20S User Manual 1.1 Brief Introduction E32-400M20S is a self-developed, 433/470MHz LoRaTM SMD wireless module with the maximum transmission power of 1W which is based on the SX1278 produced by Semtech in the United States. Due to adopt the original installation import SX1278 as the core module,, Due to its advanced LoRaTM modulation technology, its anti-interference performance and communication distance are far superior to the current FSK and GFSK modulation products. This module is mainly aimed at intelligent home, wireless meter reading, scientific research and medical treatment, and medium and long distance wireless communication equipment. As the RF performance and component selection are in accordance with industrial standards, and the product has obtained FCC, CE, RoHS and other international authoritative certification reports. Since this module is a pure RF transceiver module, it needs to be programmed by using MCU drive or special SPI debugging tools. 1.2 Application Home security alarm and remote keyless entry; Smart home and industrial sensors; Wireless alarm security system; Building automation solutions; Wireless industrial-grade remote control; Health care products; Advanced Meter Reading Architecture(AMI); Copyright �2012�2021Chengdu Ebyte Electronic Technology Co.,Ltd. 4 Chengdu Ebyte Electronic Technology Co.,Ltd. 2 Specification and parameter E32-400M20S User Manual 2.1 Limit parameter Main parameter Power supplyV Blocking powerdBm Operating temperature Performance Min Max 0 3.6 - 10 -40 85 Remark Voltage over 5.5V will cause permanent damage to module Chances of burn is slim when modules are used in short distance Industrial grade 2.2 Operating parameter Main parameter Operating voltageV Communication levelV Operating temperature Operating frequencyMHz Power TX currentmA Consump- RX currentmA tion Sleep current A Max TX powerdBm Receiving sensitivitydBm Performance Min Type Max 1.8 3.3 3.6 - 3.3 - -40 - 85 410 - 493 - 110 - - 17 - - 2 - - 20 - -145 -147 -148 Remark 5.5 V ensures output power - Industrial grade - Air data rate is 1.2 kbps Main parameter Reference distance FIFO Crystal Oscillator Protocol Package Interface Communication interface Size Antenna Description 5km 256Byte 32MHz LoRaTM(recommended) SMD 1.27mm SPI 14 * 20 mm Stamp hole / IPEX Remark Test conditionclear and open area, antenna gain: 5dBi antenna height: 2mair data rate: 2.4 kbps Maximum length of single send FSK/GFSK/MSK/GMSK/OOK Stamp hole 0~10Mbps 50 ohm impedance Copyright �2012�2021Chengdu Ebyte Electronic Technology Co.,Ltd. 5 Chengdu Ebyte Electronic Technology Co.,Ltd. 3 Size and pin definition E32-400M20S User Manual Copyright �2012�2021Chengdu Ebyte Electronic Technology Co.,Ltd. 6 Chengdu Ebyte Electronic Technology Co.,Ltd. E32-400M20S User Manual Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Item GND GND GND GND GND RXEN TXEN DIO2 VCC GND GND GND DIO3 DIO4 DIO5 GND DIO1 DIO0 Direction - Input Input Input/Output Input/Output Input/Output Input/Output Input/Output Input/Output Ground Description Ground Ground Ground Ground RF switch receiving control pin, connected to external MCU IO, high level effective RF switch receiving control pin, connected to external MCU IO, high level effective General IO port (see SX1276 manual for details) Power supply, range 3.3 ~ 5.5V (external ceramic filter capacitor is recommended) Ground Ground Ground General IO port (see SX1276 manual for details) General IO port (see SX1276 manual for details) General IO port (see SX1276 manual for details) Ground General IO port (see SX1276 manual for details) General IO port (see SX1276 manual for details) Copyright �2012�2021Chengdu Ebyte Electronic Technology Co.,Ltd. 7 Chengdu Ebyte Electronic Technology Co.,Ltd. E32-400M20S User Manual 19 RST Input Chip reset trigger input pin 20 MISO Output SPI data output pin 21 MOSI Input SPI data output pin 22 SCK Input SPI data output pin 23 NSS Input the module chip selects the pin used to start an SPI communication 24 GND - Ground 25 ANT - Antenna interface, Sample hole (50 characteristic impedance) 26 GND - 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 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 Layer High-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; Try to stay away from some physical layers such as TTL protocol at 2.4GHz , for example: USB3.0; 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�2021Chengdu Ebyte Electronic Technology Co.,Ltd. 8 Chengdu Ebyte Electronic Technology Co.,Ltd. E32-400M20S User Manual 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 The core of this module is SX1278/SX1278, its driving method is completely equivalent to SX1278/SX1276, the user can operate according to the SX1278/SX1276 chip manual DIO0, DIO1, DIO2, DIO3, DIO4 and DIO5 are general I/O ports, which can be configured into a variety of functions. See SX1278 manual for details. If not used can be suspended; NRST, TXEN and RXEN pins must be connected, wherein NRST controls the reset of the chip, TXEN and RXEN pins control the RF switch; Pay attention to good grounding, large area of ground, small ripple of power supply, filter capacitor should be added and close to module VCC and GND pins as far as possible; SPI communication rate should not be set too high, usually 1Mbps is recommended; When transmitting, set DIO_7 pin to high level and DIO_13, DIO_14 pins to low level;When receiving, set 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�2021Chengdu Ebyte Electronic Technology Co.,Ltd. 9 Chengdu Ebyte Electronic Technology Co.,Ltd. 5 Basic application 5.1 Hardware design and circuit schematic diagram E32-400M20S 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; 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 put in a metal case; Power register was set incorrectly, air data rate is set as too high (the higher the air data rate, the shorter the distance); The power supply low voltage under room temperature is lower than 2.5V, the lower the voltage, the lower the transmitting power; 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�2021Chengdu Ebyte Electronic Technology Co.,Ltd. 10 Chengdu Ebyte Electronic Technology Co.,Ltd. E32-400M20S User Manual Please check the stability of power source, the voltage cannot fluctuate too much; Please make sure antistatic measure are taken when installing and using, high frequency devices have electrostatic susceptibility; Please ensure the humidity is within limited range, some parts are sensitive to humidity; Please avoid using modules under too high or too low temperature. 6.3 BER(Bit Error Rate) is high There are co-channel signal interference nearby, please be away from interference sources or modify frequency and channel to avoid interference; SPI clock waveform is not standard, check whether there is interference on the SPI line, SPI bus wiring should not be too long; 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�2021Chengdu Ebyte Electronic Technology Co.,Ltd. 11 Chengdu Ebyte Electronic Technology Co.,Ltd. 7 Production guidance 7.1 Reflow soldering temperature Profile Feature Solder Paste Preheat Temperature min Tsmin Preheat temperature max (Tsmax) Preheat Time (Tsmin to Tsmax)(ts) Average ramp-up rate(Tsmax to Tp) Liquidous Temperature (TL) TimetLMaintained AboveTL Peak temperatureTp Aveage ramp-down rateTp to Tsmax Time 25 to peak temperature 7.2 Reflow soldering curve E32-400M20S User Manual Sn-Pb Assembly Sn63/Pb37 100 150 60-120 sec 3/second max 183 60-90 sec 220-235 6/second max 6 minutes max Pb-Free Assembly Sn96.5/Ag3/Cu0.5 150 200 60-120 sec 3/second max 217 30-90 sec 230-250 6/second max 8 minutes max Copyright �2012�2021Chengdu Ebyte Electronic Technology Co.,Ltd. 12 Chengdu Ebyte Electronic Technology Co.,Ltd. 8 E32 series E32-400M20S User Manual Model No. E32-400T20S E32-900T20D E32-433T30D E32-433T20DC IC SX1278 SX1276 SX1278 SX1278 Frequency Hz 433M 868/915M 433M 433M Tx power dBm 20 20 30 20 Distance km 3 5.5 8 3 Package SMD DIP DIP DIP Antenna IPEX/Sample hole SMA-K SMA-K SMA-K 9 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. Model No. TX915-JZ-5 Frequency Gain Type Hz dBi Rubber 915M 2.0 antenna Hright mm Cable cm 50 - Interface Function feature SMA-J Short straight &omnidirectional Rubber TX915-JK-11 915M 2.5 110 - SMA-J Flexible &omnidirectional antenna Rubber TX915-JK-20 915M 3.0 200 - SMA-J Flexible &omnidirectional antenna Sucker TX915-XPL-100 915M 3.5 290 100 SMA-J antenna High gain Copyright �2012�2021Chengdu Ebyte Electronic Technology Co.,Ltd. 13 Chengdu Ebyte Electronic Technology Co.,Ltd. Revision history Version 1.0 Date 2021-5-07 E32-400M20S User Manual Description Initial version Issued by 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 Copyright �2012�2021Chengdu Ebyte Electronic Technology Co.,Ltd. 14
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