This project is used to verify the solution verification board design of the video and audio interface chip WTR050 of Lichuang Mall. This project is a solicitation project for Lichuang EDA open source hardware platform solution verification module.

• This design is a recording and playback module based on WTR050, which is used to verify the basic functions of the chip.
• WTR050 is a high-performance recording chip produced by WT (Guangzhou Weichuang Electronics) Company. It has short recording distance and good sound quality. It can directly drive the 8Ω/0.5W speaker output. The playback sound quality is clear, the volume is high, and it is easy to use.
• The chip controls sound recording and playback through buttons, and can realize long-press recording, loop playback, short-press playback and other functions.

Pin description

Note: The button is active at high level

Module features

• Working voltage: 2.8~5.2V;
• Automatically enter sleep mode when not working;
• The key functions include long press to record, short press to loop playback, long press to maintain loop playback, and long press to play;
• The sampling frequency is 8KHz ~16KHz, and the sampling frequency can be selected by two toggle switches.

Key Function

REC: Long press to record PLAL: Long press to play, release to stop, non-loopable PLAE: Short press to loop, long press to keep looping

Sampling frequency