HT812L0 데이터 시트보기 (PDF) - Holtek Semiconductor

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HT812L0

2.8 Second Enhanced Tone Voice

Holtek Semiconductor 

HT812L0

♦ Busy output

When voices are playing, the FLAG pin is

turned low and the FLAG LED is switched

on. Once the voice output is terminated,

FLAG becomes a floating output and the

FLAG LED is switched off.

♦ Sound level display

The brightness of the LED will vary with

the volume in the voice output state.

Programmable items

• Voice section

• Tempo

• Decay time and envelope shape

There are four programmable envelope

shapes and decay time to smooth out tone and

melody sounds.

♦ Decay time: 2 sec, 1 sec, 0.5 sec, 0.25 sec

♦ Tone shape: tone+2kHz, noise, tone, silence

• Trigger mode: retriggerable/non-retriggerable

• REPEAT function

• FLAG1 outputs, 3Hz/6Hz/Busy/Off

7

5th May ’98

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