The WTV-S1 module is a unique voice module that supports playback of various music formats. It features a built-in amplifier and DAC for high-quality sound playback. The module also supports multiple button and control modes, making it suitable for applications such as toys, medical instruments, and doorbells.
The WTV‑S1 is a voice playback module that supports multiple audio formats, includes a built‑in power amplifier capable of driving a 0.5 W speaker, and operates from a 2.5‑3.5 V supply. It offers 16‑bit DAC audio quality, SPI‑Flash storage from 1 M‑bit to 32 M‑bit, and various control interfaces such as button, parallel, one‑wire and three‑wire serial modes.
The manual describes the pin configuration, electrical parameters, control mode operation, software workflow for compiling and downloading voice data via USB or UART232, and typical application circuits. Appendices list optional chord modules and example MIDI content. This manual is written in Chinese.
| Supply voltage | DC 2.5–3.5 V |
|---|---|
| Operating current | 130 mA |
| Sleep current | 4 mA |
| Audio output power | 0.5 W |
| DAC resolution | 16‑bit |
| Supported sample rate | 6 kHz – 20 kHz |
| SPI‑Flash capacity | 1 M‑bit to 32 M‑bit |
| Maximum stored audio time | 1280 seconds |
The module operates from a DC supply of 2.5 V to 3.5 V.
Voice data can be updated multiple times using either the USB online download mode or the UART232 offline download mode.