HT2812H Holtek, HT2812H Datasheet

Manufacturer Part Number

HT2812H

Description

Manufacturer

Holtek

Datasheets

1.HT2812-14DIP.pdf (17 pages)

2.HT2812H.pdf (17 pages)

Case

DIP

Date_code

1992

Features

General Description

The HT2812 is a CMOS LSI chip designed for

use in sound effect products. It is equipped with

tone circuit, noise circuit, and other control

logic to generate different sounds including rifle

gun, machine gun, booming sound, door bell,

Pin Assignment

Block Diagram

Single power supply: 2.4V~3.3V

Low standby current at 3V, 1 A (Typ.)

Auto power-off function

Speaker or direct piezo application

Single Sound Generator

alarm etc. The customer supplied sound source

can be analyzed and programmed into an inter-

nal ROM by changing a mask layer during de-

vice fabrication. The HT2812 is suitable for

various toy applications.

Built-in envelope control circuit

1Hz~8Hz programmable LED flash output

Minimum external components

HT2812

10th July ’97