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Bluetooth intercom dedicated module

This module is a 16 * 27.6mm Bluetooth intercom dedicated module with a high-performance PCB antenna on board. While ensuring transmission quality, it can reduce the user's worries when designing the antenna. At the same time, it adopts a semi stamp hole process with very few peripheral components, further reducing the difficulty of user design and accelerating the development progress of the user end.

Module Overview

The module provides the following interfaces:

l A UART port, where TX is upgraded in conjunction with USB. During operation, TX can output debugging information, while RX can accept user customized commands

l One LED (I/O) default: displays to the user the current Bluetooth connection status (can be customized and changed)

l A USB 2.0 interface for upgrading (in conjunction with another port of the module, it can charge VBAT through a standard curve)

l A set of dual channel analog audio output interfaces

l A MIC interface that can be connected to an external microphone for voice input (default microphone input)

l A set of LINEINs for external analog voice input (default microphone input)

l An analog port used for key input, which can be used to connect multiple keys with as few interfaces as possible (without issues such as jitter or drift)

l One set of charging interfaces: Provide one set of lithium charging interfaces, which can save one external charging IC device

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