WTV380-8S Voice Chip
Compact SOP8 Voice Chip with 380s Built‑in Voice & 1‑Wire/2‑Wire Control
The WTV380-8S Voice Chip is a compact SOP8 voice chip featuring a 32‑bit processor up to 120MHz with 380 seconds of built‑in voice storage. It supports 1‑wire and 2‑wire serial control (single or double‑byte modes), 16‑level volume control, and a built‑in 0.5W Class‑D amplifier. With deep sleep under 3µA, it is ideal for battery‑powered voice prompt systems, home appliances, and toys.
- 380s built‑in voice – ample storage
- 1‑wire / 2‑wire control – single or double‑byte
- 16‑level volume – E0H–EFH
- Built‑in 0.5W amp – direct speaker drive
- Deep sleep < 3µA – ultra‑low power
Key Features
Specifications
| Parameter | Value |
|---|---|
| Package | SOP8 |
| Operating Voltage | 2.6V – 3.6V |
| Built‑in Voice | 380 seconds |
| Audio Format | MP3 (8–320kbps) |
| Audio Output | PWM (0.5W) / DAC |
| Volume Levels | 16 (E0H–EFH) |
| Address Range (Single) | 224 (00H–DFH) |
| Address Range (Double) | 65000+ (0000H–03E7H+) |
| Deep Sleep | < 3 µA |
| Normal Sleep | < 30 µA |
| Operating Temp | ‑40°C ~ +85°C |
Pin Functions WTV380-8S(SOP8)
| Pin | Name | Function |
|---|---|---|
| 1 | BUSY | Busy signal output |
| 2 | DATA1 / CLK2 | 1‑wire data / 2‑wire clock |
| 3 | DATA2 | 2‑wire data input |
| 4 | ONEKEY | Next‑track button (low active) |
| 5 | PWM− | Speaker negative |
| 6 | VCC | Power (2.6–3.6V) |
| 7 | PWM+ | Speaker positive |
| 8 | GND | Ground |
WTV380-8S Applications
Frequently Asked Questions
What control modes does WTV380-8S support?
It supports 1-wire serial and 2-wire serial control, available in both single-byte (A05/A07) and double-byte (A15/A17) modes.
What is the difference between single-byte and double-byte modes?
Single-byte mode supports up to 224 voice addresses (00H–DFH). Double-byte mode supports up to 65,000+ voice addresses (0000H–03E7H and beyond).
What is the built-in voice storage capacity?
WTV380-8S provides 380 seconds of built-in voice storage.
What is the power consumption in sleep mode?
Deep sleep consumes less than 3µA. Normal sleep (default) consumes less than 30µA. The chip enters normal sleep 5 seconds after power-on without playback.
Does it have a built-in amplifier?
Yes. It features a built-in 0.5W Class-D amplifier that can directly drive an 8Ω speaker via PWM output.
How many volume levels are available?
16 levels (E0H–EFH). Volume does not have power-off memory and defaults to EFH on power-up.
What is the operating voltage of the SOP8 package?
The SOP8 package operates from 2.6V to 3.6V.
What audio formats are supported?
It supports MP3 format with bitrates from 8kbps to 320kbps.
What is the ONEKEY pin for?
The ONEKEY pin (pin 4) provides a built-in next-track function. Pull it low to play the next voice segment – ideal for quick testing without MCU control.
What are the typical applications?
Voice prompt systems, home appliances, automotive electronics, toys, industrial alarms, consumer electronics, and any application requiring compact voice playback with flexible control.
Important: SOP8 package operates at 2.6–3.6V. Control mode is fixed during programming – specify function code when ordering (A05/A07 for single‑byte, A15/A17 for double‑byte). Deep sleep requires wake‑up sequence. External Flash: Waytronic‑branded recommended.
