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E200-2G4A20S Wireless audio transmission Low power consumption2.4G serial port integrated transceiver two-way transmission walkie-talkie voice communication

[Introduction]：E200-2G4A20S wireless audio module is a brand new wireless audio transmission module launched by Chengdu Ebyte, which integrates transceiver and transceiver. It has the characteristics of small size and convenient use. It works in the 2.4G frequency band. It uses hardware I/O to select the channel by default. It can also be set to software channel selection through instructions. It supports MIC input and speaker output, and is compatible with 3.3V power supply voltage.

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Pin number	Pin name	Pin direction	Pin usage
2	ANT	-	Antenna interface
6	REST	Input	Module reset pin, active low level;
11	TXD	output	TTL serial port output;
12	RXD	Input	TTL serial port input;
16	TTCLK	-	Debug clock pin, do not use floating processing;
17	TTDIO	-	Debug data pins, do not use floating processing;
20	VCC	power supply	Module power supply positive reference, voltage range: 2.2~3.6V DC, 3.3V recommended;
22	WAKE_UP	Input	Wake-up pin, used for AT command configuration parameters, low-level wake-up;
23	MODE	Input	The transceiver mode control pin of the module, low-level transmit mode, high-level receive mode, cannot be left floating;
25	Debug_en	-	The debugging control pin is a low-level module that enters the program burning mode and does not use floating processing;
26	CH3	Input	Channel selection 3, combined with CH0, CH1, CH2, selects 16 working channels, see the channel table for details;
27	CH2	Input	Channel selection 2, combined with CH0, CH1, CH3, selects 16 working channels, see the channel table for details;
28	CH1	Input	Channel selection 1, combined with CH0, CH2, CH3, selects 16 working channels, see the channel table for details;
29	CH0	Input	Channel selection 0, combined with CH1, CH2, CH3, selects 16 workable channels, see the channel table for details;
30	VOIN	Input	Audio input is negative, please refer to the recommended circuit for hardware design details;
31	VOIP	Input	The audio input is positive, please refer to the recommended circuit for hardware design details;
32	VOON	output	The audio output is negative, please refer to the recommended circuit for hardware design details;
33	VOOP	output	The audio output is positive, please refer to the recommended circuit for hardware design details;
1、3、15、19、34、35、36	GND	power supply	Module ground wire
4、5、7、8、9、10、13、14、18、21、24	NC	-	Keep it unused and leave it floating;