General Description

The HT827A0 is 8-bit high performance microcontroller with a voice synthesizer and tone generator. They are designed for applications on multiple I/Os with sound effects. The LSIs provide 26 kinds of voice sampling rates, 4 octaves of tone level as well as a high quality of current type D/A output. With such a flexible structure, the HT827A0 is excellent for versatile voice and sound effect product applications. It also includes a halt function to reduce power consumption.

特性 Features

8-bit microcontroller

? Operating voltage: 2.4V~5.2V

? 8Kx16 program ROM

? 208x8 data RAM

? 36 bidirectional I/O lines

? Interrupt input

? 16-bit programmable timer/event counter with overflow interrupts

? Watchdog timer

? On-chip crystal or RC types of oscillator

? Halt function and wake-up feature reduces power consumption

? 63 powerful instructions

? Up to a 1μs instruction cycle with a 4MHz system clock at VDD=5V

? All instructions in 1 or 2 machine cycles

? 16-bit table read instruction

? 8-level subroutine nesting

? Bit manipulation instruction

Voice and melody synthesizer

? 128Kx8 voice ROM

? 3/4 bit ADPCM coding algorithm

? 26 kinds of voice sampling rates

? Tone level of 4 octaves

? 14 kinds of melody beats

? Current type of D/A switch output

? Tone generator counter

? Controllable volume

? 48-pin DIP package

Applications

? Intelligent educational toys

? High end toy controllers

? Talking alarm clocks

? Alert and warning systems

? Public address systems

? Sound effect generators