The HT86030/HT86070 series are 8-bit high performance microcontroller with voice synthesizer and tone generator. The HT86030/HT86070 is designed for applications on multiple I/Os with sound effects, such as voice and melody. It can provide various sampling rates and beats, tone levels, tempos for speech synthesizer and melody generator. It has a single built-in high quality, D/A output. There is an external interrupt which can