1. GENERAL DESCRIPTION
The W567Bxxx is a powerful microcontroller (uC) dedicated to speech and melody synthesis
applications. With the help of the embedded 8-bit microprocessor & dedicated H/W, the W567Bxxx
can synthesize 4-channel speech+melody simultaneously.
The two channels of synthesized speech can be in different kinds of format, for example ADPCM and
MDPCM. The W567Bxxx can provide 4-channel high-quality WinMelodyTM , which can emulate the
characteristics of musical instruments, such as piano and violin. The output of speech/melody
channels are mixed together through the on-chip digital mixer to produce colorful effects. With these
hardware resources, the W567Sxxx is very suitable for high-quality and sophisticated scenario
The W567Bxxx is also capable of transmitting infrared (IR) signals with on-chip carrier generator. As a
result, toys can be designed to interact with each other for more play values. A serial interface can be
supported as external memory for memory expansion or content-updateable applications.
The W567Bxxx family contains several items with different playback duration as shown below: (@5-bit
MDPCM algorithm, 6KHz sampling rate)
W567B015 W567B020 W567B030
W567B080 W567B100 W567B120
*: The duration time is based on 5-bit MDPCM at 6KHz sampling rate. The firmware library and timber library have
been excluded from user’s ROM space for the duration estimation.
Publication Release Date: May 2009
- 2 - Revision A10