HT827A0 データシートの表示（PDF） - Holtek Semiconductor

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HT827A0

8-Bit Microcontroller with Voice ROM

Holtek Semiconductor 

HT827A0

8-Bit Microcontroller with Voice ROM

Features

8-bit microcontroller

· Operating voltage: 2.4V~5.2V

· 8K´16 program ROM

· 208´8 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

Voice and melody synthesizer

· 128K´8 voice ROM

· 3/4 bit ADPCM coding algorithm

· 26 kinds of voice sampling rates

· Tone level of 4 octaves

· 14 kinds of melody beats

Applications

· Intelligent educational toys

· High end toy controllers

· Talking alarm clocks

General Description

The HT827A0 is 8-bit high performance

microcontroller with a voice synthesizer and

tone generator. They are designed for applica-

tions 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

· Halt function and wake-up feature reduces

power consumption

· 63 powerful instructions

· Up to a 1ms 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

· Current type of D/A switch output

· Tone generator counter

· Controllable volume

· 48-pin DIP package

· Alert and warning systems

· Public address systems

· Sound effect generators

current type D/A output. With such a flexible

structure, the HT827A0 is excellent for versa-

tile voice and sound effect product applications.

It also includes a halt function to reduce power

consumption.

1

March 15, 2000

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