This recording module realizes the functions of specified file name, file index recording and playback in specified folder, adding specified file directory playback in specified folder, deleting specified file name, stopping recording and playback, fast forward and fast backward function, setting playback volume command, reading SD card status, querying SD card capacity, etc.
Product characteristics:
1. Support WAV, MP3 (48KHZ, 320Kbps) high-quality audio format playback, beautiful sound quality
2. A SPI interface.
3. Built-in RC oscillator and watchdog timer, power-on automatic reset
4. Two full-duplex asynchronous serial interface, support standard UART asynchronous serial communication, flexible control.
5. An SD card interface, which can be connected to SD cards to support 32G
6. A USB 2.0 interface, supporting USB TOG, external U disk maximum support 32G
7. Supporting FAT, FAT32 File System
8.9-way 10-bit ADC, can expand the AD button up/down, play/pause, record/stop recording, stop playing, volume +/-and so on.
9. A 1W power amplifier is built in the module.
10. Power supply voltage: 5V→3.3V
