Ebyte EWM32M T20S Series User Manual

At directive 20dbm small form factor lora wireless module

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EWM32M-xxxT20S User Manual

AT Directive 20dBm Small Form Factor LoRa Wireless Module

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Summary of Contents for Ebyte EWM32M T20S Series

Page 1 EWM32M-xxxT20S User Manual AT Directive 20dBm Small Form Factor LoRa Wireless Module...
Page 2 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 3 6.4 Power saving mode (mode 2) ........................15 6.5 Deep sleep mode (mode 3) ........................15 7 Register read/write control ..............................16 7.1 Command Introduction ..........................16 7.2 Reading of operating parameters ......................16 7.3 Version number reading ........................... 16 Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 4 12.2 Reflow temperature ..........................25 13 Related Models .................................. 26 14 Antenna Guide ................................... 26 14.1 Antenna Recommendation ........................26 15 Batch packing method ..............................28 Revision history ..................................28 About us ....................................29 Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 5 Supports deep hibernation, the whole power consumption in this mode is about 3uA;  Communication distance is up to 5km under ideal conditions;  Parameters are saved when power down, and the module will work according to the set parameters after power up  again; Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 6 2.5 meters, air rate Distance 2.4kbps. Operating Applicable to EWM32M-433T20S. Frequency Band Applicable to EWM32M-900T20S. Air Rate 2.4K 2.4K 19.2K User programmable control Blocking Less probability of burnout in close power proximity Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 7 UART serial port TTL level ion Interface Maximum capacity of a single Transmit 58 Btye package, automatically divided into length packages after exceeding it Package Cache 512Btye Capacity Antenna IPEX-1/Stamp Hole Equivalent impedance approx. 50Ω Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 8 Pin Usage Module Ground Empty pin (not open for use, no need for user concern) Module Ground Module Ground TX_EN Output Used in conjunction with RX_EN to control external PA; left blank if not used Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 9 Empty pin (not open for use, no need for user to care) RESET Input Module reset pin, low level reset. Module ground Antenna interface (high frequency signal output, 50 ohm characteristic impedance) Module Ground Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 10 For some 5V MCUs, it may be necessary to add 4 to 10K pull-up resistors to the TXD and AUX pins of the module. It is recommended to reserve 1MΩ pull-up resistor at the M0/M1 interface. Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 13 [Note]: AUX=1 does not mean that all the serial data of the module have been launched through the wireless, or the  last packet of data is being launched. 5.6.3 Module in the process of being configured only when resetting and exiting hibernation mode;  Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 14 Serial port reception is off, wireless is in Wake-on-Air mode, 2 Power Transmitter must be in and when wireless data is received, the serial port is opened saving mode mode 1 to send out the data. Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 15 58 bytes, the module waits for the 3 bytes of time, if there is no user data continue to input, it is considered to be the termination of the data, at this time, the module will be all the data packets Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 16 When entering from hibernation mode to other modes, the module will reconfigure the parameters, and during note the configuration process, AUX stays low; when finished, it outputs a high level, so it is recommended that the Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 17 C3 is the command header, 32 represents the product model, XX represents the version number, YY represents the interface format + module maximum power value (hexadecimal). 0x10 for TTL interface, 0x40 for RS232, 0x80 for RS485 Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 18 Airspeed 4.8k time. The airborne wireless transmission rate Airspeed 9.6k must be the same for both sides of the Airspeed 19.2k communication. Airspeed 19.2k Airspeed 19.2k General Model CHAN Retain unused Write 0 Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 19 Serial port baud rate of 9600 Air rate of 2.4k bit 8N1 Corresponding hexadecimal 7.6 Factory Default Parameter Model number Factory default parameter value: C0 00 09 00 00 00 1A 00 17 03 00 00 Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 20 Set the air rate to 19.2K AT+WOR=role Set WOR role and period AT+WOR=0 Set to WOR receive AT+POWER=power Set Transmit Power AT+POWER=0 Set the transmit power to 30dBm AT+TRANS=mode Setting the Transmit Mode AT+TRANS=1 Set to fixed point mode Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 21 Query WOR delayed sleep Returns WOR delayed sleep AT+DELAY=? AT+DELAY=1000 time time of 1000ms. Query software switch mode Software switching mode off AT+SWITCH=？ AT+SWITCH=0 switch AT+MODE=？ Query current working AT+MODE=0 Returns the current pass- Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 22 After entering the upgrade mode, the baud rate will be automatically switched to 115200 until it exits automatically, during which a log will be output. Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 23 Please pay attention to the correct connection of the positive and negative terminals of the power supply, such as  reverse connection may cause permanent damage to the module; Please check the power supply to ensure that it is between the recommended supply voltages, if it exceeds the  Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 24 Metal objects near the antenna, or placed in a metal shell, the signal attenuation will be very serious;  Wrong power register setting, air rate setting is too high (the higher the air rate, the closer the distance);  Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 25 Extension cords, feeder cords of poor quality or too long, can also cause high BER.  11.4 Antenna Selection Enable both the IPEX-1 interface and the stamp hole interface at the same time, the IPEX-1 interface and the stamp hole interface can be selected at will Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 26 6℃/s，Max 6℃/s，Max Time from room temperature to peak 6 minutes, max. 8 minutes, max. temperature ※The peak temperature (Tp) tolerance of the temperature profile is defined as the user's upper limit. 12.2 Reflow temperature Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 27 Antenna is an important role in the communication process, often poor-quality antenna will have a great impact on the communication system, so we recommend some of the antennas as a supporting our wireless module and the performance is more excellent and reasonably priced antennas. Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 28 Large Suction Cup Antenna, High TX433-XPH-300 433M SMA-J Antenna Gain Rubber Ultra Short Straight, Omni- TX490-JZ-5 Stick 470/490M SMA-J directional Antenna Antenna Suction Cup Small Suction Cup Antenna, Cost TX490-XPL-100 470/490M SMA-J Antenna Effective Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 29 EWM32M-xxxT20S User Manual 15 Batch packing method Revision history Version Date Description Issued by 2025-01-23 Initial version Recommended Wiring Diagram to Add Reserved 2025-02-07 Pull-Up Resistor Description Copyright ©2012–2025，Chengdu Ebyte Electronic Technology Co.,Ltd.
Page 30 EWM32M-xxxT20S User Manual About us Technical support: support@cdebyte.com Documents and RF Setting download link: www.cdebyte.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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Ewm32m-433t20sEwm32m-900t20s