Recommended Wiring Diagram - Ebyte E49-900T20S User Manual

Chengdu Ebyte Electronic Technology Co., Ltd
16 NC
17 NC
18 NC
19 GND
20 GND
21 ANT
22 GND

4. Recommended wiring diagram

Brief introduction of connection between the module and the single-chip microcomputer (the above picture uses
No.
1
Some 5V microcontrollers may require 4 ~ 10K pull-up resistors on the TXD and AUX pins of the module.
2
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STM8L single-chip microcomputer as an example)
The wireless serial port module is TTL level, please connect with MCU with TTL level.
E49-900T20S User Manual
Module ground wire
Module ground wire
antenna
Module ground wire
7