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Summary of Contents for Ebyte E49-400T20D
- Page 1 E49-400T20D User Manual 433MHz DIP Wireless Module...
- Page 2 AST COMMUNICATION TEST 7. COMMAND FORMAT ........................13 7.1 F ................................13 ACTORY DEFAULT PARAMETER 7.2 R ..............................14 EADING OPERATING PARAMETER 7.3 V ................................14 ERSION NUMBER READING 7.4 P ..............................14 ARAMETER SETTING COMMAND Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
- Page 3 ................................18 EFLOW OLDERING URVE 11. RELATED MODEL .......................... 19 12. ANTENNA GUIDANCE ........................ 19 12.1 A ................................ 19 NTENNA RECOMMENDATION 13. BATCH PACKAGING ........................19 REVISION HISTORY ..........................19 ABOUT US ..............................20 Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
- Page 4 1. Overview 1.1 Introduction E49-400T20D is an ultra-high cost-effective wireless module developed by Chengdu Ebyte. There are 4 operating modes. Each transmission mode has its own characteristics and can be applied to various application scenarios. E49-400T20D perfectly supports industrial-grade applications, and undergoes rigorous testing at factory to ensure its industrial reliability and batch consistency.
- Page 5 The maximum capacity of a single package is automatically Sub-packet 54 Byte packed after exceeding. Buffer 500 Byte Modulation GFSK Communication interface UART Package Connector 2.54mm pin header Size 36*21mm Antenna 50 ohm impedance Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
- Page 6 Work with M1 to decide 4 working modes of module (can be suspended, internal （weak pull-up） pull-up resistor). Input Work with M0 to decide 4 working modes of module (can be suspended, internal （weak pull-up） pull-up resistor). Input TTL UART input, connects to external TXD output pin. Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
- Page 7 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 ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
- Page 8 AUX after the data output is completed. 5.2.2 Wireless transmission indication After receiving the serial port data, the module will immediately pull down AUX and start sending data wirelessly and after all the data is sent, pull up AUX. Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
- Page 9 AUX output is high, the mode switching will be completed. When users enter other modes from mode 3 (sleep mode) or during the reset process, the module will reset user parameters, during which AUX outputs low level. 5.3.5 Fixed-point mode description Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
- Page 10 Example: Set the address of module A to 0xFFFF and the channel to 0x04.When module A is used as a receiver, it can receive all the data under the 0x04 channel to achieve the purpose of monitoring. Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
- Page 11 This operation mode is very flexible and efficient. It is designed in accordance with the convenience of the user MCU, and can reduce the workload of the entire system as much as possible, improve system efficiency and reduce power consumption. Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
- Page 12 When entering from the setting mode to other modes, the module will reconfigure the parameters. During the Note configuration, AUX remains low level; It outputs a high level after finished, so it is recommended that the user detect the rising edge of AUX. Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
- Page 13 Step Description Connect E49-400T20D module to the E49-TBL backplane, and then plug into the USB test board (E15-USB-T2), plug into the computer to ensure that the driver has been installed correctly; Plug in the mode selection jumper cap on the USB test board ( M1 = 0, M0 = 0) Select 3.3V (the module supports 2.6 ~ 3.3V).
- Page 14 7.1 Factory default parameter Model Factory default parameter value: C0 00 00 19 2E 00 Module type Frequency Address Channel Air rate Baud rate Transmitting power E49-400T20D 433MHz 0x0000 0x2E 2.4kbps 9600 Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
- Page 15 111: Serial baud rate is 115200 ------------------------------------------------- ---------------------------------------- 2，1，0 Wireless air data rate （bps） 000：Air data rate is 1.2k ---------------------------------------- 001：Air data rate is 2.4k（default） The lower the air data rate, the longer 010：Air data rate is 4.8k Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
- Page 16 For example: The meaning of No.3 "SPED" byte: The binary bit of the byte Configured by users Meaning UART parity bit 8N1 UART baud rate is 9600 Air data rate 2.4k Corresponding hexadecimal Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
- Page 17 When the module is mounted inside the case, use a good 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. Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
- Page 18 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 ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
- Page 19 Aveage ramp-down rate（Tp to Tsmax） Average descent rate 6℃/second max 6℃/second max Time of 25 ° C to peak Time 25℃ to peak temperature 6 minutes max 8 minutes max temperature 10.2 Reflow Soldering Curve Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
- Page 20 Antennas play an important role in the communication process, usually low-quality antennas will greatly affect the communication system. Therefore, we recommend some antennas as supporting antennas of our company with excellent performance and reasonable price. Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
- Page 21 Issued by 2020-01-09 Initial version 2022-11-8 Bug fixes 2023-4-27 Bug fixes 2023-11-13 Bug fixes About us Sales hotline: 4000-330-990 Support: support@cdebyte.com Website: https://www.fr-ebyte.com Address: B5 Mould Park, 199# Xiqu Ave, High-tech District, Sichuan, China Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
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