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Name：CSR 8645 blutooth V4.0 stereo module
Describe：
8645-A bluetooth audio module adopted CSR8645 with the characteristics of high integration and small volume,
8645-A bluetooth audio module only with a few peripheral components can realize its powerful functions.
Content：
Built-in lithium battery charging circuit quickly, reduce the peripheral circuit design
Built-in powerful eliminate circuit noise, voice call more clearly
Built-in high quality DAC conversion circuit, signal to noise ratio of 95 db
Built-in serial FLASH, voice can be set up personality
Kalimba DSP embedded data processor, finish all kinds of digital speech processing
Tiny module size: 13 x20mm, compatible with all products structure
The higher the Bluetooth version: Bluetooth V4.0, software compatibility
Low power consumption: 100 ma lithium battery can talk more than 10 hours
Rf Class2. Very far transmission distance, power level, can reach more than 20 meters
The microphone input. Have two road, call quality is superior
Have strong echo elimination function
With high quality audio transmission protocol: A2DP V1.2, AVRCP remote control protocol
more audio decoding function: APTX (8645) only, SBC, MP3, AAC
HFP V1.6 / HSP V1.2, support connect two phones at the same time
Support for simple pairing
Supports UART, PCM, usb communication interface, 3 LED control
Module through the RoHS certification