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Summary of Contents for Ebyte E22-400T22D
- Page 1 E22-400T22D User Manual SX1268 433/470MHz 160mW LoRa Wireless Module...
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Page 2: Table Of Contents
EEP SLEEP MODE 7. REGISTER READ AND WRITE CONTROL ................13 ..............................13 7.1 C OMMAND FORMAT ............................... 14 7.2 R EGISTER DESCRIPTION 7.3 F ..........................16 ACTORY DEFAULT PARAMETER 8. REPEATER NETWORKING MODE ..................16 Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. - Page 3 11.3 BER(B RROR IS HIGH 12. WELDING GUIDANCE ......................21 13. E22 SERIES ..........................21 14. ANTENNA GUIDANCE ......................21 ........................... 21 14.1 A NTENNA RECOMMENDATION REVISION HISTORY ........................22 ABOUT US ............................22 Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
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Page 4: Overview
TTL level output, compatible with 3.3V and 5V IO port voltage. E22-400T22D uses a new generation of LoRa spread spectrum technology. Compared with the traditional SX1278 solution, the SX1268 solution has a longer transmission distance, faster speed, lower power consumption and smaller size. -
Page 5: Application
Sleep current（μA） mption Software is shut down Max Tx power（dBm） 21.5 22.0 22.5 Receiving sensitivity（dBm） -146 -147 -148 Air data rate is 0.3 kbps Air data rate（bps） 0.3k 2.4k 62.5k Controlled via user’s programming Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. - Page 6 Can be configured via command as 32/64/128/240 bytes per packet to TX length 240 Byte transmit Buffer 1000 Byte Modulation LoRa New generation LoRa modulation technology Communication interface UART TTL level Package Connector 1*7*2.54mm Size 21*36 mm Antenna 50 ohm impedance Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
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Page 7: Size And Pin Definition
TTL UART output, connects to external RXD input pin. To indicate module ’ s working status & wakes up the external MCU. During Output the procedure of self-check initialization, the pin outputs low level. Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. -
Page 8: Connect To Mcu
Description（STM8L MCU） The UART module is TTL level, please connect with TTL level MCU. For some MCU works at 5V DC, it may need to add 4～10K pull-up resistor for the TXD & AUX pin. Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. -
Page 9: Function Description
For example: Set the address of module A as 0xFFFF, and the channel as 0x04; When module is the transmitter (transparent transmission), all modules under channel 0x04 will receive the data, the Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. -
Page 10: Monitor Address
It can indicate whether there are data that are not sent yet via wireless way, or whether all wireless data has been sent through UART, or whether the module is still in the process of self-check initialization. 5.6.1 Indication of UART output To wake up external MCU Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. -
Page 11: Indication Of Wireless Transmitting
After switching to new operating mode, it will not work in the new mode immediately until AUX rising edge lasts for 2ms . If AUX stays on the high level, the operating mode switch takes effect immediately. Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. 4-10... -
Page 12: Operating Mode
And the user's main MCU immediately sleeps, the module will automatically transmit the user data through the wireless, and automatically enters sleep within 1ms; This saves MCU's working time and reduces power consumption. Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. 4-11... -
Page 13: Normal Mode （Mode 0
It can receive data normally, the receiving function is the same as mode 0. 6.4 Configuration mode（Mode 2） M0 = 0，M1 = 1 Type Transmitting Wireless transmitting off Receiving Wireless receiving off Configuration Users can access the registers to configure the module's operation state. Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. 4-12... -
Page 14: Deep Sleep Mode （Mode 3
Send: registers Return: C1 E.g 2: Configure module address (0x1234), network address (0x00), serial port (9600 8N1) and air data rate (1.2K). Send: C2 00 04 12 34 00 61 Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. 4-13... -
Page 15: Register Description
Air data rate 0.3k be the same; Air data rate 1.2k The higher the air rate, the smaller the delay and Air data rate 2.4k（default） the shorter the transmission distance. Air data rate 4.8k Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. 4-14... - Page 16 When enabled, wireless data will be monitored LBT enable before it is transmitted, which can avoid Disable（default） interference to a certain extent, but may cause data delay. Enable Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. 4-15...
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Page 17: Factory Default Parameter
Factory default parameters: 62 00 00 00 00 00 Model No. Frequency Address Channel Air data rate Baud rate Serial format Power E22-400T22D 433.125MHz 0x0000 0x17 2.4kbps 9600 22dbm 8. Repeater networking mode Description Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. 8-16... - Page 18 ③Two-way repeater As shown in the figure: the data sent by node 1, the nodes 2, 4 can receive the data sent by node 2, 4, and node 1 can also receive it. Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. 8-17...
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Page 19: Configuration Instructions On Computer
Chengdu Ebyte Electronic Technology Co.,Ltd. E22-400T22D User Manual 9. Configuration instructions on computer The following figure shows the E22-400T22D configuration host computer display interface, users can switch to the command mode through M0M1, and quickly configure and read the parameters on computer. -
Page 20: Hardware Design
If the communication line uses a 5V level, a 1k-5.1k resistor must be connected in series (not recommended, there is still a risk of damage)； Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. 10-19... -
Page 21: Faq
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 ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. 11-20... -
Page 22: Welding Guidance
Therefore, we recommend some antennas for wireless modules with excellent performance and reasonable price. Frequenc Interfa Gain Model No. Type Height Cable Function feature y Hz Flexible Weldin Built-in flexible FPC TX433-NP-4310 433M 43.8*9.5 antenna antenna Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. 14-21... -
Page 23: Revision History
Initial version 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 ------------------------------------------------------------------------------------------------------------ Fax: 028-64146160 ext. 821 Web: www.ebyte.com Address: Innovation Center D347, 4# XI-XIN Road,Chengdu, Sichuan, China Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
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