WTH040 Voice Chip User Manual, introduces the features, selection, application range, pin diagram, electrical parameters, control mode, reset and output status, application circuit, etc. of the chip
The WTH040 is a programmable one‑time‑program (OTP) voice chip offering up to 40 seconds of audio per file and supporting up to 700 voice files. It provides PWM and DAC audio outputs, multiple control modes (button, one‑wire serial, two‑wire serial) and operates from 2.4 V to 5.0 V.
The manual includes detailed pin diagrams, electrical parameters, timing diagrams for the serial interfaces, example programs, package dimensions and a revision history, helping designers integrate the chip into automotive, home‑automation, appliance and industrial applications. This manual is written in Chinese.
| Working voltage (VDD) | 2.4‑5.0 V |
|---|---|
| Standby current (LDO ON) | 3‑5 µA |
| Standby current (LDO OFF) | 1‑3 µA |
| Operating current | 600 µA |
| Output drive current (PWM/DAC, VOUT=0.6 V) | 10 mA |
| PWM drive current (VOUT=1.5 V) | 200 mA |
The chip can store up to 700 voice files.
It supports button control, one‑wire serial control, and two‑wire serial control.
The chip operates from 2.4 V to 5.0 V.
One‑wire serial mode can load up to 63 voice address segments.