HT84XXX
Magic Voice
TM
Features
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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
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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
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High-end educational leisure products
Alert and warning systems
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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
HT84384
8192Kb
384 sec
Note: The voice capacity is based on a sampling rate of 21Kb/s
Magic Voice is a trademark of Holtek Semiconductor Inc.
TM
Easy Format is a trademark of Grow With Me, Inc.
TM
1
April 26, 2000
HT84XXX
Block Diagram
O S C
T im e B a s e
G e n e ra to r
T o n e /M e lo d y
G e n e ra to r
C u rre n t T y p e
D /A O u tp u t
A U D 0
P B 0 ~ P B 7
P A 0 ~ P A 3
V D D
V S S
D e c o d e r
&
I/O
C o n tr o lle r
D A
& U
In s tru
R O
T A
s e r
c tio n
M
S p e e c h
S y n th e s iz e r
C u rre n t T y p e
D /A O u tp u t
A U D 1
Pin Assignment
N C
N C
N C
N C
N C
V D D
A U D 0
A U D 1
P B 7
P B 6
P B 5
P B 4
P B 3
P B 2
9
1 0
1 1
1 2
1 3
1 4
8
7
6
5
4
3
2
1
2 8
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
1 9
1 8
1 7
1 6
1 5
N C
N C
N C
N C
N C
O S C
V S S
V S S
P A 0
P A 1
P A 2
P A 3
P B 0
P B 1
H T 8 4 X X X
2 8 S K D IP
2
April 26, 2000
HT84XXX
Pad Assignment
HT84036
V D D
1
(0 , 0 )
1 8
O S C
A U D 0
2
1 7
1 6
V S S
V S S
4
5
3
A U D 1
P B 7
6
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
Chip size: 2735
´
2105 (mm)
2
* The IC substrate should be connected to VSS in the PCB layout artwork.
P B 6
P B 5
P B 4
P B 3
P B 2
P B 1
P B 0
P A 3
P A 2
P A 1
P A 0
3
April 26, 2000
HT84XXX
HT84072
(0 , 0 )
V D D
1
1 8
O S C
A U D 0
2
1 7
1 6
V S S
V S S
4
3
A U D 1
P B 7
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
Chip size: 2735
´
2645 (mm)
2
* The IC substrate should be connected to VSS in the PCB layout artwork.
P B 6
P B 5
P B 4
P B 3
P B 2
P B 1
P B 0
P A 3
P A 2
P A 1
P A 0
4
April 26, 2000
HT84XXX
HT84144
(0 , 0 )
V D D
1
1 8
O S C
A U D 0
2
1 7
1 6
V S S
V S S
4
3
A U D 1
P B 7
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
Chip size: 2735
´
3735 (mm)
2
* The IC substrate should be connected to VSS in the PCB layout artwork.
P B 6
P B 5
P B 4
P B 3
P B 2
P B 1
P B 0
P A 3
P A 2
P A 1
P A 0
5
April 26, 2000
