HT84XXX Datasheet, PDF (1/31 Pages) Holtek Semiconductor Inc – Magic VoiceTM

HT84XXX
Magic Voice^TM
Features
· Operating voltage: 2.4V~5.0V
· Programmable tone melody generator
· ADPCM or m-law PCM, PCM synthesis
· Wide range of sampling rate for voice
synthesis
· Minimum sampling rate step: 100Hz
· Voice melody mixed output
· Programmable 2 channels of melody mixed
output
· Programmable 2 channels of voice mixed
output
· 13 kinds of melody beats
· 5 octaves of tone level and 18 tempos
· 16 levels of digital volume control
· Two current type D/A outputs
· Eight programmable I/O pins
· Four programmable input pins
· Provides 36 sec to 384 sec of voice capacity
· Timer controller
· Voice fill-in function
· Powerful user-defined functions
· Power-on initial setting
· 28-pin SKDIP package
Applications
· High-end educational leisure products
· Alert and warning systems
· Speech synthesizers and sound effect
generators
General Description
The HT84XXX family is a series of programma-
ble speech synthesizers and tone generators de-
signed for user-defined voice and melody
applications. It provides various sampling
rates and beats, tone levels, tempos for the
speech synthesizer and melody generator. The
HT84XXX series has two built-in high quality,
current type D/A outputs with 16 levels of vol-
ume control. The user¢s commands enable the
user to program the powerful custom function
such as to build-in a tiny controller. The Magic
Voice^TM provides various operational functions
similar to arithmetic operation, logic operation,
branch decision, random counter, and a pro-
grammable timer. The Magic Voice^TM series
are suitable for versatile voice and sound effect
applications.
The HT84XXX Magic Voice^TM is Easy For-
mat^TM supported.
ROM Selection Table
The HT84XXX series provides various voice capacity as shown below:
Part No.
ROM
Voice
Length
HT84036
768Kb
36 sec
HT84072
1536Kb
72 sec
HT84144
3072Kb
144 sec
HT84192
4096Kb
192 sec
Note: The voice capacity is based on a sampling rate of 21Kb/s
HT84384
8192Kb
384 sec
Magic Voice^TM is a trademark of Holtek Semiconductor Inc.
Easy Format^TM is a trademark of Grow With Me, Inc.
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April 26, 2000