HT812L0 データシートの表示（PDF） - Holtek Semiconductor

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HT812L0

2.8 Second Enhanced Tone Voice

Holtek Semiconductor 

HT812L0

2.8 Second Enhanced Tone Voice

Features

• Operating voltage: 2.4V~5.0V

• Low standby current (1µA Typ.)

• Voice/sound effect/simple melody output

• 2.8-second voice capacity

• 32 tone sections

• 16 words for each tone section

• Current type D/A output

• Mask options

– Pull-high resistor: 20kΩ/50kΩ/100kΩ

– KEY1: Direct or sequential/random key

– Trigger mode: Retriggerable/Non-retrig-

gerable

– KEY1 play normal mode or twin mode

Normal mode: one group for KEY1

Applications

• Toys

• Alarm clocks

• Public address system

General Description

The HT812L0 is a single chip PCM voice and

sound effect synthesizer. It provides 2.8 seconds

of voice capacity at a 6kHz sampling rate

(FSR=6kHz) and 32 sections of sound ef-

fects/simple melodies. A maximum of 8 keys or

4×4 MATRIX are available. Of the 8 keys or 4×4

Pin Assignment

Twin mode: Two groups for KEY1

– 8 direct key or 4×4 MATRIX keys

– Two-page trigger

– Key debounce time: 22ms/45ms

– Trigger function:

Level hold/one shot/level trigger

– FLAG1, FLAG2 outputs:

3Hz/sound level/busy/6Hz/endp

– Melody/tone decay time:

2 sec/1 sec/0.5 sec/0.25 sec

– Four kinds of envelope shapes for melody

• Tone shape: tone+2kHz/noise/tone/silence

• Tempo: 16ms/section~1 sec/section

• Dice form or 16-pin DIP

• Alert & warning system

• Sound effect generators

• Voice interface products

MATRIX, KEY1 can be optioned as a direct or

sequential/random key, so that it can play an

interlaced voice/sound effect/simple melody and

generate various special sound effects for toys

and sound effect generator applications.

1

5th May ’98

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