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E32-433T33S User Manual

SX1278 433MHz 2W TTL LoRa Wireless Module

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Summary of Contents for E32-433T33S

Page 1: ...E32 433T33S User Manual SX1278 433MHz 2W TTL LoRa Wireless Module ...

Page 2: ... BROADCASTING TRANSMISSION 7 5 3 BROADCASTING ADDRESS 8 5 4 MONITOR ADDRESS 8 5 5 RESET 8 5 6 AUX DESCRIPTION 8 5 6 1 Indication of UART output 8 5 6 2 Indication of wireless transmitting 9 5 6 3 Configuration procedure of module 9 5 6 4 Notes for AUX 10 6 OPERATING MODE 10 6 1 MODE SWITCH 10 6 2 NORMAL MODE MODE 0 11 6 3 WAKE UP MODE MODE 1 12 6 4 POWER SAVING MODE MODE 2 12 6 5 SLEEP MODE MODE 3...

Page 3: ...Chengdu Ebyte Electronic Technology Co Ltd 2 8 HARDWARE DESIGN 16 9 FAQ 17 9 1 COMMUNICATION RANGE IS TOO SHORT 17 9 2 MODULE IS EASY TO DAMAGE 17 9 3 BER BIT ERROR RATE IS HIGH 17 10 E32 SERIES 17 11 ANTENNA RECOMMENDATION 18 12 PACKAGE FOR BATCH ORDER 19 REVISION HISTORY 19 ABOUT US 20 ...

Page 4: ...kps with 33dbm output PA LNA ensures stable communication and long distance transmission 1 2 Features Communication distance tested is up to 16km Maximum transmission power of 1W software multi level adjustable Support the global license free ISM 433MHz band Support air date rate of 0 3kbps 19 2kbps Support new generation LoRa technology Low power consumption for battery supplied applications Supp...

Page 5: ...at risk of burning down Operating temperature 40 85 Industrial design Operating frequency MHz 410 441 Support ISM band Power consumpti on Transmitting current mA 850 1000 1200 Instant power consumption Receiving current mA 11 13 15 Turn off current μA 2 Software is shut down Max Tx power dBm 32 33 34 Receiving sensitivity dBm 145 147 148 Air data rate is 2 4kbps Air data rate bps 0 3k 2 4k 19 2k C...

Page 6: ...pull up work with M0 to define 4 working mode not floated connect to ground when not using 7 M0 Input weak pull up work with M1 to define 4 working mode not floated connect to ground when not using 11 ANT Output Antenna 50ohm impedance 12 GND fixed orifice 13 GND fixed orifice 14 GND fixed orifice 18 PB0 Input Output NC pins for future development no need to connect 19 PB1 Input Output NC pins for...

Page 7: ...level MCU 2 When using a 5V MCU please perform level conversion M00 M11 AUX is connected to the IO port of the MCU RX is connected to the TXD of MCU and TX is connected to the RXD of MCU 3 TVS protection and capacitors need to be added outside the power supply it is recommended to add a 22uF low ESR electrolytic capacitor or tantalum capacitor 4 The RF module is sensitive to pulsed static electric...

Page 8: ...ngdu Ebyte Electronic Technology Co Ltd E32 433T33S user manual Copyright 2012 2022 Chengdu Ebyte Electronic Technology Co Ltd 7 5 Function description 5 1 Fixed transmission 5 2 Broadcasting transmission ...

Page 9: ... of monitor is realized 5 5 Reset When the module is powered AUX outputs low level immediately conducts hardware self check and sets the operating mode based on user s parameters During the process the AUX remains low level After the process completed the AUX outputs high level and starts to work as per the operating mode combined by M1 and M0 Therefore users need to wait the AUX rising edge as th...

Page 10: ...ithout overflow Buffer not empty when AUX 0 the internal 512 bytes data in the buffer have not been written to the RFIC completely If the user starts to transmit data at this circumstance it may cause overtime when the module is waiting for the user data or transmitting wireless sub package When AUX 1 it does not mean that all the UART data of the module have been transmitted already perhaps the l...

Page 11: ...et process the module will reset user parameters during which AUX outputs low level 6 Operating mode There are four operating modes which are set by M1 and M0 the details are as follows Mode 0 3 M0 M1 Mode introduction Remark 0 Normal 0 0 UART and wireless channel are open transparent transmission is on The receiver must work in mode 0 or mode 1 1 Wake up 1 0 UART and wireless channel are open the...

Page 12: ...in any mode switch The module will start to work in new mode within 1ms after completing present mode task which enables the user to omit the procedure of AUX inquiry and switch mode swiftly For example when switching from transmitting mode to receiving mode the user MCU can go dormancy before mode switch using external interrupt function to get AUX change so that the mode switch can be realized T...

Page 13: ...om outside MCU Hence the function of wireless transmission is not available for the module working in this mode Receiving In mode 2 it is required the data transmitter works in mode 1 The wireless module monitors the preamble code at regular time Once it gets the preamble code it will remain as receiving status and waiting for the completion of receiving the entire valid data package Then the AUX ...

Page 14: ...hexadecimal format The module returns the version information and they must be sent in succession 7 1 Default parameters Default parameter values C0 00 00 1A 17 40 Model Frequency Address Channel Air data rate Baud rate Parity Transmitting power E32 433T33S 410 441MH z 0x0000 0x17 2 4kbps 9600 8N1 2W 7 2 Reading operating parameters Instruction format Description C1 C1 C1 In sleep mode M0 1 M1 1 U...

Page 15: ...e parameters when power down 1 ADDH High address byte of module the default 00H 00H FFH 2 ADDL Low address byte of module the default 00H 00H FFH 3 SPED 7 6 UART parity bit UART mode can be different between communication parties 0 0 8N1 default 0 1 8O1 1 0 8 E1 1 1 8N1 equal to 00 5 4 3 TTL UART baud rate bps UART baud rate can be different between communication parties The UART baud rate has not...

Page 16: ...h pull outputs RXD pull up inputs 0 TXD AUX open collector outputs RXD open collector inputs 5 4 3 wireless wake up time The transmit receive module work in mode 0 whose delay time is invalid can be arbitrary value The transmitter works in mode 1 can transmit the preamble code of the corresponding time continuously When the receiver works in mode 2 the time means the monitor interval time wireless...

Page 17: ...e 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 d...

Page 18: ...or poor matching between antenna and module 9 2 Module is easy to damage Please check the power supply source ensure it is in right range Voltage higher than max value will damage the module 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...

Page 19: ...good antenna can largely improve the communication system Therefore we recommend some antennas for wireless modules with excellent performance and reasonable price Model No Type Frequenc y Hz Interface Gain dBi Height Cable Function feature TX433 NP 4310 Soft PCB antenna 433M SMA J 2 43 8 9 5mm Soft inside FPC soft antenna TX433 JW 5 Rubber antenna 433M SMA J 2 50mm Flexible omnidirectional TX433 ...

Page 20: ...ic Technology Co Ltd E32 433T33S user manual Copyright 2012 2022 Chengdu Ebyte Electronic Technology Co Ltd 19 12 Package for batch order Revision history Version Date Description Issued by 1 0 2022 4 14 Initial version Hyh ...

Page 21: ... Co Ltd 20 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 cdebyte com Address B5 Mould Park 199 Xiqu Ave High tech District Sichuan China ...

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