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PDF HT85036 Data sheet ( Hoja de datos )
| Número de pieza | HT85036 | |
| Descripción | Green Voice | |
| Fabricantes | Holtek Semiconductor Inc | |
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HT85XXX
Green VoiceTM
Features
· Operating voltage: 2.4V~5.0V
· Driver speaker (32W) VDD=4.5V,
IDD=90mA
· Programmable tone melody generator
· ADPCM, 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
· Eight programmable I/O pins
· Four programmable input pins
· Provides 36 sec to 96 sec of voice capacity
· Timer controller
· Voice fill-in function
· Powerful user-defined functions
· Power-on initial setting
· 28-pin SKDIP package
General Description
The HT85XXX 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 HT85XXX series has a built-in high quality,
current type D/Aoutputs with 16 levels of volume
control. The user¢s commands enable the user to
program the powerful custom function such as to
build-in a tiny controller. The Green Voice pro-
vides various operational functions similar to
arithmetic operation, logic operation, branch de-
cision, random counter, and a programmable
timer. The Green Voice series are suitable for
versatilevoiceandsoundeffect applications.
The HT85XXX Green Voice series is Easy For-
matTM supported.
Selection Table
The HT85XXX series provides various voice capacity as shown below:
Part No.
ROM
Voice
Length
HT85036
768Kb
36 sec
HT85048
1024Kb
48 sec
HT85072
1536Kb
72 sec
Note: The voice capacity is based on a sampling rate of 4-bit ADPCM 5.25kHz.
*: under development.
HT85096
2048Kb
96 sec
Green VoiceTM and Easy FormatTM are trademark of Grow With Me, Inc.
1
August 24, 2000
1 page  
HT85XXX
Functional Description
The Green Voice series is a series of program-
mable speech synthesizers and melody genera-
tors. It provides various sampling rates and
beats, tone levels, tempos for speech synthe-
sizer and melody generator. For voice synthe-
sizer, the Green Voice provides 8-bit PCM, 6-bit
m-law PCM and 4-bit ADPCM synthesis. In
HT85XXX series, a mixed output of two chan-
nels PCM synthesis is allowed but only one
channel ADPCM synthesis is allowed. For mel-
ody generator, the Green Voice supports a tone
melody and PCM melody generator and two
channels mixed output for the whole series.
The Green Voice series build-in 8 programma-
ble I/O pins and 4 programmable input pins
along with powerful user¢s command. The
user¢s instructions are employed to develop
new and customized functions for a wide vari-
ety of innovative applications.
Speech and melody analysis
The speech and melody sources of the Green
Voice can be recorded and edited from the PC
sound card and media tools. Holtek¢s CAD tools
first load a speech source file as .WAV or .PCM
format, then transfer the speech file as PCM,
LOG-PCM or ADPCM format, and finally save
it to the internal mask ROM by changing a
layer of the mask. The PCM format generates a
higher sound quality whereas the ADPCM for-
mat brings about a longer recording capacity.
The melody source can either be in the .MID or
in the .MLD format.
The .MID file is the standard format of the win-
dows media tools. The .MLD file is a text for-
mat. After the .MID file is compiled, the .MLD
file is automatically generated.
The Green Voice can support the following com-
pression format of the voice .WAV and .PCM
file: AD4, PCM8, m-law PCM.
Current type D/A output
The HT85XXX series supply high accuracy cur-
rent type D/A output pins for audio output. The
output volume is changeable from 0 to 15 digi-
tal levels by writing a value to the VOLUME
registers. The D/A pins are PMOS open drain
structure and ouput synthesized signals for
driving a speaker through an external NPN
transistor when the chip is active. However, it
becomes floating when the chip is in the
standby state. An 8050 type transistor with
hFE=150 is recommended for the output driver
of the D/A output pin.
Melody/Tone generator
The HT85XXX family has a built-in mel-
ody/tone generator. The generator can generate
13 different kinds of melody beats, 5 octaves of
tone level, 18 tempos, and 2 channels mixed
output. Of these components, the melody tempo
is changeable and generates sound effects by
writing a control value to the TEMPO register.
The chip provides the following 18 tempos, 13
beats, and 5 octaves for user¢s programming.
· 18 tempos (Beats/Min.)
68 78 82 93 100 105
109 114 119 125 132 139
147 156 179 192 227 310
· 13 beats
1 1 1 1 1 1 1 2 3 1, 4 3 2
24, 12, 8, 6, 4, 3, 2, 3, 4, 3, 2,
· 5 octaves
C1~B1, C2~B2, C3~B3, C4~B4, C5~B5
5 August 24, 2000
5 Page 
HT85XXX
Holtek Semiconductor Inc. (Headquarters)
No.3 Creation Rd. II, Science-based Industrial Park, Hsinchu, Taiwan, R.O.C.
Tel: 886-3-563-1999
Fax: 886-3-563-1189
Holtek Semiconductor Inc. (Taipei Office)
5F, No.576, Sec.7 Chung Hsiao E. Rd., Taipei, Taiwan, R.O.C.
Tel: 886-2-2782-9635
Fax: 886-2-2782-9636
Fax: 886-2-2782-7128 (International sales hotline)
Holtek Semiconductor (Hong Kong) Ltd.
RM.711, Tower 2, Cheung Sha Wan Plaza, 833 Cheung Sha Wan Rd., Kowloon, Hong Kong
Tel: 852-2-745-8288
Fax: 852-2-742-8657
Copyright Ó 2000 by HOLTEK SEMICONDUCTOR INC.
The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek
assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are
used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications
will be suitable without further modification, nor recommends the use of its products for application that may pres-
ent a risk to human life due to malfunction or otherwise. Holtek reserves the right to alter its products without prior
notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw.
11 August 24, 2000
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