Datasheet > HT819D0

HT819D0

更新时间： 2024-09-20 22:09:23

品牌	Logo	应用领域
台湾合泰/盛群 - HOLTEK		PC
页数	文件大小	规格书
13页	571K
描述
4.2 Second LOG-PCM Speech

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中文翻译

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数据手册

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HT819D0 数据手册

HT819D0

4.2 Second LOG-PCM Speech

Features

•

Operating voltage: 2.4V~5.0V

Directly drives an external transistor

FLAG2 options:

–

3Hz flash

6Hz flash

Busy output

–

•

Low standby current (1µA typ. for VDD=3V)

Minimal external components

252 words table ROM for key functions

Programmable silence length and end-pulse

width (minimal end-pulse width is 330µs at a

6kHz sampling rate)

–

•

Controllable volume

6 keys

Key options:

–

Stop key: KEY6

Random (only for KEY1)

Sequential (only for KEY1)

Repeat (for all KEYs)

–

•

4.2-second voice capacity

Section options:

–

Retriggerable

Non-retriggerable

–

Key debounce time (for all KEYs): 700µs,

•

FLAG1 options:

22ms, 45ms, 180ms (based on a 6kHz sam-

pling rate of)

One shot (for all KEYs)

Pull-high resistance (for all KEYs)

Dice form or 16-pin DIP/SOP

–

End-pulse output

3HzB flash

6HzB flash

Voice output indication

–

•

–

Busy output

Applications

•

Toys

Alarm clocks

Alert and warning system

Sound effect generators

•

Public address system

General Description

The HT819D0 is a single chip LOG-PCM voice

synthesizer LSI with 4.2-second voice capacity

at a 6kHz sampling rate. The chip when trig-

gered drives a speaker through an external

transistor with a current switch D/A converter

output. Negligible current will be consumed in

the standby state.

The customer ’s voice sources are recorded sec-

tion by section into an internal mask ROM. The

sectional playback arrangement instructions of

each key are stored in the table ROM. The key

features are also programmable. With such a

flexible structure, the HT819D0 is excellent for

versatile voice applications.

The HT819D0 provides 6 key inputs and 2 pro-

grammable FLAG outputs. With a 2.4V~5.0V

power supply, a complete synthesized voice

playback system can be easily built with very

few external components.

6th May ’98

12 3 4 5 6 7...13

中文翻译

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