This document is a user manual for the WTB series voice chips from Guangzhou Weichuang Electronics Co., Ltd. It introduces the features, application scope, selection and packaging diagram of the WTB chips.
This document provides a complete overview of the WTB series voice chips, including chip features, application ranges, selection guidelines, block diagrams, package drawings and detailed pin descriptions. It also lists electrical parameters, absolute maximum ratings, IO port definitions and multiple control modes such as button, one‑wire and three‑wire serial interfaces.
Typical application circuits, example control programs and package dimensions are included, along with source information and revision history. The manual is intended for designers integrating the chips into devices such as motor controllers, security systems, toys and timed medication dispensers. This manual is written in Chinese.
| Supply Voltage (VCC) | 2.2 – 5.5 V |
|---|---|
| Output Low Current (IOL) at 3 V | 3.92 mA |
| PWM Output Current at 3 V | -25 mA |
The chips operate from 2.2 V to 5.5 V.
WTB015 can store up to 15 seconds of audio.
Pins PB0/OSC2 and PB1/IR are omitted.