HOLTEK HT81009

HT81XXX
EasyVoiceTM Speech
Features
· Operating voltage: 2.4V~5V
· FLAG2 options
· Directly drives an external transistor
-
3Hz flash
6Hz flash
Busy output
OFF
· 6 keys (Directed)
· PWM function directly driver speaker
· Low standby current (1mA typ. for VDD=3V)
· Minimal external components
· 240 notes table ROM for key functions
· 8 keys (Matrix key)
· Programmable silence length and end-pulse width
· Key options
(minimal end-pulse width is 1.3ms at 8kHz sampling
rate)
-
Sequential/Directed
Repeat (KEY2~KEY6)
STOP key (KEY6)
Key debounce time: 1.2ms, 22ms, 45ms
(based on a 8kHz sampling rate)
- One shot/Normal
- Pull-high resistance: 0, 50kW, 100kW, 200kW
· Section options
· Controllable volume
· FLAG1 options
-
End-pulse output
3Hz, 3HzB flash
6Hz, 6HzB flash
Busy output
OFF
- Retriggerable
- Non-retriggerable
· Dice form or 16-pin DIP package
Applications
· Leisure products
· Alert and warning system
· Alarm clocks
· Sound effect generators
General Description
The EasyVoiceTM is a single-chip voice synthesizer LSI .
The chip when triggered drives a speaker directly or
through an external transistor with a PWM output. Negligible current is consumed in the standby state.
The customer¢s voice sources are recorded section by
section into an internal mask ROM. The instructions of
section playback arrangement of each key are stored in
the table ROM. The key features are also programmable. With such a flexible structure, the EasyVoiceTM is
excellent for versatile voice applications.
The HT81XXX provides direct key or Matrix key input
and 2 programmable FLAG outputs. With 2.4V~5.0V
power supply, a complete synthesized voice playback
system can be easily built with very few external components.
Selection Table
Part No.
Voice Capacity
Note:
Mask
HT81003
OTP
HT81R03
3 sec
HT81006
HT81009
HT81012
HT81R09
6 sec
9 sec
12 sec
HT81018
HT81R18
HT81R36
18 sec
36 sec
The voice capacity is calculated based on 5kHz sampling rate.
For 3-second capacity HT81003/HT81R03 devices, refer to the its relevant data sheet.
EasyVoiceTM is a trademark of Holtek Semiconductor Inc.
Rev. 1.50
1
November 21, 2006
HT81XXX
Block Diagram
I/O 1
I/O 2
K E Y 1 ~ 4
O S C I
V D D
D e b o u n c e
C ir c u it
O n e -s h o t
O s c illa to r
C ir c u it
T im e B a s e
G e n e ra to r
R O M A d d re s s
C o u n te r
A u d io
C o n tr o lle r
D a ta R O M
V S S
S ta tu s
D is p la y
C o n tr o lle r
O U T 1
S e le c to r
O U T 2
O U T 3
Pin Assignment
I/O 2
1
1 6
N C
I/O 2
1
1 6
V P P
I/O 1
2
1 5
N C
2
1 5
K E Y 4
3
1 4
V S S
I/O 1
K E Y 4
3
1 4
O E
V S S
K E Y 3
4
1 3
O U T 1
K E Y 3
4
1 3
O U T 1
V D D
5
1 2
V D D
V D D
5
1 2
V D D
O S C I
6
1 1
O U T 2
O S C I
6
1 1
O U T 2
K E Y 1
7
1 0
V S S
K E Y 1
7
1 0
V S S
K E Y 2
8
9
O U T 3
K E Y 2
8
9
O U T 3
H T 8 1 R 0 9 /H T 8 1 R 1 8 /H T 8 1 R 3 6
1 6 D IP -A
H T 8 1 0 0 6 /H T 8 1 0 0 9
H T 8 1 0 1 2 /H T 8 1 0 1 8
1 6 D IP -A
Pad Assignment
HT81006/HT81009
I/O 2
1
I/O 1
K E Y 3
V S S
(0 ,0 )
3
K E Y 4
4
1 3
O U T 1
1 2
V D D
1 1
O U T 2
5
V D D
O S C I
1 4
2
6
K E Y 1
K E Y 2
9
1 0
V S S
8
O U T 3
7
Chip size: 41.9 ´ 70.3 (mil)2
* The IC substrate should be connected to VSS in the PCB layout artwork.
Rev. 1.50
2
November 21, 2006
HT81XXX
HT81012/HT81018
I/O 2
1
I/O 1
2
K E Y 4
3
K E Y 3
4
V D D
O S C I
(0 ,0 )
1 4
V S S
1 3
O U T 1
1 2
V D D
1 1
O U T 2
5
6
K E Y 1
K E Y 2
9
1 0
V S S
8
O U T 3
7
Chip size: 41.9 ´ 84.4 (mil)2
* The IC substrate should be connected to VSS in the PCB layout artwork.
Rev. 1.50
3
November 21, 2006
HT81XXX
HT81R09
(0 ,0 )
I/O 2
1
I/O 1
2
K E Y 3
K E Y 4
3
V D D
O S C I
1 6
V P P
1 5
O E
1 4
V S S
4
5
6
9
1 2
V D D
O U T 3
K E Y 2
K E Y 1
1 0
1 1
O U T 2
8
O U T 1
V S S
7
1 3
Chip size: 51 ´ 102.8 (mil)2
* The IC substrate should be connected to VSS in the PCB layout artwork.
Rev. 1.50
4
November 21, 2006
HT81XXX
HT81R18
(0 ,0 )
I/O 2
I/O 1
1
2
K E Y 4
K E Y 3
V P P
1 5
O E
1 4
V S S
4
V D D
O S C I
1 6
3
5
6
9
1 2
V D D
K E Y 1
K E Y 2
O U T 3
1 0
1 1
O U T 2
8
O U T 1
V S S
7
1 3
Chip size: 51.6 ´ 138 (mil)2
* The IC substrate should be connected to VSS in the PCB layout artwork.
Rev. 1.50
5
November 21, 2006
HT81XXX
HT81R36
I/O 1
I/O 2
V P P
O E
K E Y 4
1
1 6
1 5
1 4
1 3
(0 ,0 )
K E Y 3
V S S
1 1
O U T 1
1 0
V D D
2
6
7
8
9
O U T 3
V S S
O U T 2
5
K E Y 2
4
K E Y 1
3
O S C I
V D D
1 2
Chip size: 96.5 ´ 121.1 (mil)2
* The IC substrate should be connected to VSS in the PCB layout artwork.
Rev. 1.50
6
November 21, 2006
HT81XXX
Pad Coordinates
Unit: mm
HT81006/HT81009
Pad No.
X
Y
Pad No.
X
Y
1
-342.450
254.150
8
-70.700
-672.700
2
-342.450
124.150
9
44.250
-672.700
3
-342.450
-7.700
10
191.500
-639.900
4
-342.450
-135.000
11
377.150
-646.800
5
-364.900
-272.350
12
373.200
-376.900
6
-376.670
-495.876
13
377.150
7
-198.050
-672.700
14
401.150
-107.000
200.700
Unit: mm
HT81012/HT81018
Pad No.
X
Y
Pad No.
X
Y
1
-342.400
74.150
8
-852.700
2
-342.400
-55.850
9
-70.700
44.300
3
-342.400
-187.700
10
191.550
-819.900
4
-342.400
-315.000
11
377.200
-826.800
5
-364.850
-452.350
12
373.250
-556.900
6
-376.620
-675.876
13
377.200
7
-198.000
-852.700
14
401.200
-287.000
20.700
-852.700
Unit: mm
HT81R09
Pad No.
X
Y
Pad No.
X
Y
1
-477.700
-173.500
9
-1153.850
2
-477.700
-286.500
10
-39.850
106.150
3
-477.700
-386.500
11
428.750
-1164.925
4
-477.700
-499.500
12
428.750
-988.600
5
-396.450
-621.950
13
428.750
-812.275
6
-476.100
-851.000
14
476.700
-669.700
7
-250.400
-1153.850
15
476.700
-547.424
8
-150.400
-1153.850
16
468.100
-377.600
-1153.850
Unit: mm
HT81R18
Pad No.
X
Y
Pad No.
X
Y
1
-485.200
-621.000
9
-1601.350
2
-485.200
-734.000
10
-47.350
98.650
3
-485.200
-834.000
11
437.700
-1612.425
4
-485.200
-947.000
12
437.700
-1436.100
5
-403.950
-1069.450
13
437.700
-1259.775
-1117.200
-1601.350
6
-483.600
-1298.500
14
485.650
7
-257.900
-1601.350
15
485.650
-994.924
8
-157.900
-1601.350
16
477.050
-825.100
Rev. 1.50
7
November 21, 2006
HT81XXX
Unit: mm
HT81R36
Pad No.
X
Y
Pad No.
X
Y
1
-800.500
1382.800
9
712.200
-1372.000
2
-1071.700
-1175.050
10
1053.500
-1372.000
3
-1066.600
-1372.000
11
1053.500
-1067.650
4
-468.200
-1361.000
12
1043.900
5
-1371.600
941.200
-874.750
1389.700
6
-193.300
43.900
13
-1371.600
14
513.175
1384.300
7
290.900
-1371.700
15
-210.400
1382.800
8
485.000
-1372.000
16
-555.200
1382.800
Pin Description
Pin No.
Pin Name
I/O
Internal Connection
Description
1
I/O2
I/O
NMOS Pull-high
Trigger key 6, active low/NMOS output
2
I/O1
I
NMOS Pull-high
Trigger key 5, active low/NMOS output
3
KEY4
I
Pull-high
Trigger key 4, active low
4
KEY3
I
Pull-high
Trigger key 3, active low
5, 12
VDD
¾
¾
6
OSCI
I
Oscillator Input Pin
7
KEY1
I
Pull-high
Trigger key 1, active low
8
KEY2
I
Pull-high
Trigger key 2, active low
9
OUT3
I/O
Pull-high Input/NMOS
10, 14
VSS
¾
¾
11
OUT2
O
CMOS
PWM output -/CMOS output
13
OUT1
O
CMOS
PWM output +/CMOS output
NC
¾
¾
No connection - HT81R36 OTP device except
OE, VPP
¾
¾
HT81R09, HT81R18, HT81R36 OTP device only
15, 16
Positive power supply
Oscillator input pin
Pull-high/transistor output/NMOS output
Negative power supply, ground
Absolute Maximum Ratings
Supply Voltage ..........................VSS-0.3V to VSS+6.0V
Storage Temperature .......................... -50°C to 125°C
Input Voltage ............................ VSS-0.3V to VDD+0.3V
Operating Temperature ..........................-20°C to 70°C
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may
cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed
in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.
Rev. 1.50
8
November 21, 2006
HT81XXX
Electrical Characteristics
Symbol
Ta=25°C
Test Conditions
Parameter
VDD
Conditions
¾
Min.
Typ.
Max.
Unit
2.4
3
5
V
VDD
Operating Voltage
3V
IDD
Operating Current
3V
No load
¾
1000
1200
mA
ISTB
Standby Current
3V
OSC stop
¾
1
3
mA
3V
VOL=0.2VDD
90
110
¾
3V
VOH=0.8VDD
-10
-20
¾
3V
VOL=0.1VDD
1
3
¾
mA
3V
VOH=0.9VDD
-1
-2
¾
mA
VOL=0.1VDD
IOL1
PWM Output Current
IOH1
IOL2
I/O2 (TR)
IOH2
Tr Output Current
3
5
¾
mA
0.8VDD
¾
VDD
V
0
¾
0.2VDD
V
R=50kW (option)
40
50
60
R=100kW (option)
80
100
120
R=200kW (option)
160
200
240
R=110kW (fOSC=2MHz)
1.6
2
2.4
IOL3
I/O1 (FLAG Sink Current)
3V
VIH
²H² Input Voltage
¾
¾
VIL
²L² Input Voltage
¾
¾
RPH
Input Pull-high Resistor
fOSC
3V
Oscillating Frequency
3V
mA
kW
MHz
Characteristics Curves
V v s F C h a r a c te r is tic s C u r v e
3 .5
3
F re q u e n c y (M H z )
2 .5
R = 9 0 k W
R = 1
R = 1
R = 1
R = 1
2
1 .5
0 0 k
1 0 k
2 0 k
3 0 k
W
W
W
W
R = 1 4 0 k W
1
0 .5
0
2 .4
2 .6
2 .8
3 .0
3 .2
3 .4
3 .6
3 .8
4 .0
4 .2
4 .4
4 .6
4 .8
5 .0
V o lta g e ( V )
Rev. 1.50
9
November 21, 2006
HT81XXX
Functional Description
The EasyVoiceTM is voice synthesizer with 6, 9, 12, 18 or
36-second voice capacity. A group of pre-recorded voice
sections is played upon receipt of key trigger input signals. Two FLAG signals are output while playing voices.
Voice ROM
The voice ROM is originally designed to continuously record the 6, 9, 12, 18 or 36-sec voice data at about 5kHz
sampling rate. A higher sampling rate will generate
voices of better playback quality, but will shorten the total recording time. On the other hand, a lower sampling
rate will result in longer recording time but sacrifice the
voice quality.
The HT81XXX voice capacity can be divided into sections of arbitrary length. Notice that the silence length
and end-pulse width are not included in the memory.
By using Holtek¢s programming tools (HT-VDS81W),
the contents and arrangement of sections, as well as
key features and FLAG output are all programmable before device fabrication.
The playback time can be significantly extended by
making use of coding efficiency, silence playing, section
repeating, section cascade, etc.
The IC provides 6 direct key inputs (KEY1~KEY6),
KEY1 can be optioned as a direct, sequential trigger
key. KEY2~KEY6 can be selected as a stop or a direct
key.
Section
Section is the basic element constituting the contents of
the voice ROM. During programming, the customer¢s
voice sources can be divided into as many sections as
required. A section can be composed of a voice or an interval of silence. However, the silent length is not
counted in the voice ROM. The total number of sections
included should be less than 240 due to the space limitation of the function table ROM. The total length of the
included sections is limited by the voice ROM.
The IC provides matrix key (KEY1~KEY8), 6 programming pins (KEY1, KEY2, KEY3, KEY4, I/O1 and I/O2)
can be divided to 8 key that can be optioned as normal
or one shot trigger.
Play Function Block Diagram
8 /1 6 /3 2 W
S P K
K e y
tr ig g e r
K e y
fe a tu re s
o p tio n
K
fu n
ta
R
e y
c tio n
b le
O M
V o ic e
R O M
P W M +
P W M S e le c t
V
D D
E x a m p le 1 : O n e s e c tio n o n ly
s e c .1
8 W
S P K
R O M
T R
E x a m p le 2 : 3 s e c tio n d iv is io n
s e c .1
P la y c o n tr o l lo g ic
s e c .2
s e c .3
R O M
F la g
o u tp u t
E x a m p le 3 : N
s e c .1
s e c tio n d iv is io n
s e c .2
s e c .N
R O M
System Oscillator
The EasyVoiceTM has a built-in RC oscillator which requires only one external resistor for normal applications.
The oscillator frequency is typically 2MHz for an external resistor of 150kW. The required oscillator frequency
may vary with different sampling rates in the process of
voice programming. As a result, the value of the oscillator resistor may be different with respect to different
items.
A section, when triggered by a key input, can be played
once, repeatedly or cascaded with other sections, depending on the key function table instructions.
The following are examples of section division:
In addition, a section can be set as retriggerable or
non-retriggerable depending on code option.
· Retriggerable
When the currently playing section is set as
retriggerable, it will stop immediately upon receipt of
other key inputs.
O S C I
H T 8 1 X X X
R
O S C
· Non-retriggerable
When the currently playing section is selected as
non-retriggerable, it will go on playing until the whole
section is completed, whether or not there is a key input in the process of playing.
The oscillator is turned on when triggered by a key input.
After playing, it is immediately turned off. Then the chip
goes into the standby state.
Rev. 1.50
10
November 21, 2006
HT81XXX
and comprise of only one group in the function table.
An example is shown below:
For a key group, some sections can be set as
retriggerable and some as non-retriggerable. When a
retriggerable section of a key group is playing, any key
can be triggered to interrupt its playing. If it is a
non-retriggerable section playing, any key interrupt is
invalid.
Group 1-1
sec.4 + sec.2
Group 1-2
sec.1 + sec.3
:
:
Group
The EasyVoiceTM plays groups according to the key input. A group can be made up of one or more sections.
When a key is triggered, the corresponding group is
played. For example, triggering KEY2 plays group 2,
and so on. The same section is allowed to appear in different groups. However, KEY1 can be made up of multiple groups when it is optioned as a sequential key.
Otherwise, each key is composed by one group only.
Group 1-N
sec.2 + sec.3
Group 2
sec.2 + sec.3
As indicated in the above table, KEY1 can be made up
of sub-groups. The corresponding sub-groups is
played in sequence each time KEY1 is triggered.
Key Function Table
¨
The playing sequence of sequential KEY1 is:
Group 1-1 ® Group 1-2 ® Group 1-3 ..... ® Group
1-N (the last group) ® Group 1-1 .....
¨
Reset of KEY1 playing sequence
If a sub-group of KEY1 group is being played and
KEY2 is triggered, the playing sub-group will be terminated, and the newly triggered key group is played
in stead. The first sub-group will start playing by
retriggering KEY1. In other words, the KEY1 playing
sequence is reset whenever a key other than KEY1
is triggered (see Figure 1).
¨
Sub-group selection
When KEY1 is triggered with pulses, a desired
sub-group can be selected by controlling its corresponding pulse number. However, the features of
KEY1 have to be set in the following ways:
The voice ROM sections are played according to the instructions of the key function table. The function table
contains group information and the playing order of the
sections in the groups. Notice that the total amount of
sections included in the groups should be less than 256
which is the space limitation of the function table ROM.
· KEY1 as a direct key
Each key is mapped to a group in the function table. If
a key is not used, the group mapped to that key is a
piece of silence. The following is an example of the
function table:
Group 1
sec.1 + sec.2 + sec.3 + sec.4
Group 2
sec.3
:
:
-
Sequential
Retriggerable
- Minimum key debounce time (@1.2ms, fOSC=2MHz)
For instance, if sub-group 1-3 is the previous playing
group, sub-group 1-5 will start playing after 2 pulses
are applied to KEY1, and so on.
-
As illustrated in the table, voice ROM is composed of 4
sections, and 5 sections for the function table. If KEY1
is momentarily triggered, section 1, section 2, section
3 and section 4 are played in sequence and then
stopped. Triggering KEY2 plays section 3.
To make a selection of KEY1 sub-groups more easy,
KEY2 should be programmed as silence. Then this silence key has to be triggered to reset KEY1. By so doing, the playing sub-group of KEY1 is directly
specified by the pulse number applied to KEY1 (see
Figure 2).
· KEY1 as a sequential key
When KEY1 is optioned as a sequential key, it can include multiple groups (sub-groups) in the function table. However, KEY2 is used as a direct key exclusively
K E Y 1
K E Y 2
A U D
G ro u p 1 -1
G ro u p 1 -2
G ro u p 1 -N
G ro u p (2 ~ 8 )
G ro u p 1 -1
Figure 1. Reset of KEY1 Playing Sequence
Rev. 1.50
11
November 21, 2006
HT81XXX
K E Y 1
K E Y 2
( S ile n c e )
N
p u ls e
M
p u ls e
A U D
G ro u p 1 -N
G ro u p 1 -M
Figure 2. KEY1 Sub-Group Selection
· KEY6 as a stop key (by mask option)
¨
When KEY6 functions as a stop key, any voice output
can be stopped by pressing KEY6.
· KEY2~KEY6 as a repeat key
As a repeat key, the sections included can be played
sequentially and repeatedly until other key input is
triggered.
Normal trigger
When one of the two keys is pressed and held
down, the corresponding group will continue playing. Once the pressed key is released, the group
will not stop until the included sections are all completed.
K E Y N
Key Features
A U D
G ro u p N
· Key priority
When six keys are triggered simultaneously, the output voice is determined by the key priority as shown
below:
G ro u p N
FLAG
When voices are playing, both FLAG1 and FLAG2 pins
are activated to output one of the following signals
through code option.
KEY1>KEY2>KEY3>KEY4>KEY5>KEY6
· Key debounce time
FLAG1 can be optioned as one of the following signal
outputs:
There are three kinds of key-in debounce time to be
selected by mask option, namely, 1.2ms, 22ms,
45ms. The key debounce time varies with the value of
the system frequency.
OFF, 3HzB flash, Busy, 6HzB flash, 3hz, 6Hz or End-pulse
output
FLAG2, on the other hand, can be set as one of the following signal outputs:
· Pull-high resistance
Four kinds of key input pin pull-high resistance can
be selected by mask option, namely, 0kW, 50kW,
100kW and 200kW. The resistance may vary with
VDD, temperatures and the chip itself due to process variations.
OFF, 3Hz flash, 6Hz flash, or Busy output.
· 3Hz/3HzB flash
When voices are playing, FLAG1 as well as FLAG2
pin outputs a 3Hz signal to drive a LED. The signal is
active low, 25% duty. Once the voice output is terminated, the FLAG1 and FLAG2 pins become floating
outputs. When the FLAG1 and the FLAG2 pins are
optioned as 3HzB and 3Hz output, they will alternately
output at a 3Hz rate.
· Trigger mode
The two keys can optioned as one-shot trigger mode
or normal mode.
¨
G ro u p N
One shot
When one of the six keys (KEY1~ KEY6) is pressed
momentarily or held down, the group corresponding
to that key will play once.
A U D
K E Y N
F L A G
A U D
G ro u p N
Rev. 1.50
: F lo a tin g
G ro u p N
12
November 21, 2006
HT81XXX
· 6Hz/6HzB flash
Volume Control
When voices are playing, the FLAG1 pin outputs a
6Hz signal to drive a LED. The signal is active low,
25% duty. Once the voice output is terminated, the
FLAG1 pin becomes a floating output. When the
FLAG1 and the FLAG2 pins are optioned as 6HzB
and 6Hz outputs, they will alternately output at a
6Hz rate.
The function of the volume control can be set by mask
option. A code is written in the function table for the purpose of controlling the volume of each section output after the volume control function is chosen. There are two
volume options, namely; full range and half range.
I/O2
The I/O2 pin is a PWM structure. It outputs voice signals
to drive a speaker through an external NPN transistor
when the chip is active. The OUT1 and OUT2 pins are
configured as PWM structure which can drive 8/16/32W
speaker directly.
A U D
F L A G
An 8050 type transistor with hFE@150 is recommended
for an output driver.
: F lo a tin g
· Busy output
V
When a voice group is playing, the outputs of both
FLAG1 and FLAG2 are turned low, indicating that the
chip is busy.
R
O S C
O S C I
R
O U T 1
O S C
O S C I
D D
S P K
S P K
O U T 2
H T 8 1 X X X
A U D
O U T 3
H T 8 1 X X X
F L A G
: F lo a tin g
In addition to the above-stated output signals, FLAG1
can also generate one of the following signals by code
option:
¨
End-pulse output
When the voice output is completed, the FLAG1 pin
outputs an active low pulse. The pulse width can be
programmed depending on the customer¢s requirements.
The FLAG1 as well as FLAG2 pins are both floating
outputs when the chip is in the standby state.
A U D
F L A G
: F lo a tin g
Rev. 1.50
13
November 21, 2006
HT81XXX
Application Circuits
Mask Type
V
0 .1 m F
K E Y 1
K E Y 2
K E Y 4
K E Y 5
K E Y 6
R
V
O S C
K E Y 4
K E Y 3
K E Y 4
O S C
K E Y 2
R
Rev. 1.50
O S C
K E Y 4
K E Y 5
O S C I
K E Y 4
O S C I
H T 8 1 X X X
K E Y 2
K E Y 3
8 W
S P K
K E Y 4
K E Y 5
2 0 0 W
8 0 5 0
K E Y 6
V S S
R
D D
V
O U T 1
H T 8 1 X X X
8 /1 6 /3 2 W
S P K
O S C I
O S C
K E Y 1
D D
K E Y 2
K E Y 3
K E Y 4
O U T 2
K E Y 5
I/O 1
O U T 3
I/O 2
H T 8 1 X X X
O S C I
D D
V D D
O U T 1
K E Y 2
K E Y 3
K E Y 4
H T 8 1 X X X
I/O 1
I/O 2
O S C I
R
14
O S C
2 0 0 W
8 0 5 0
V S S
D D
V D D
K E Y 2
O U T 1
K E Y 3
K E Y 4
8 W
S P K
O U T 2
O U T 3
V
K E Y 1
8 0 5 0
V S S
V
K E Y 1
2 0 0 W
O U T 3
H T 8 1 X X X
8 /1 6 /3 2 W
S P K
O U T 2
I/O 1
O U T 3
I/O 2
V S S
8 W
S P K
O U T 2
I/O 1
0 .1 m F
V D D
K E Y 3
K E Y 4
K E Y 1
8 /1 6 /3 2 W
S P K
O U T 2
O U T 3
K E Y 2
K E Y 4
8 /1 6 /3 2 W
S P K
O U T 1
K E Y 3
0 .1 m F
O U T 1
V
K E Y 1
O S C
D D
K E Y 2
K E Y 3
R
V D D
V D D
K E Y 2
I/O 2
V S S
V
K E Y 1
8 0 5 0
K E Y 1
5 1 0 W
K E Y 6
K E Y 3
5 1 0 W
K E Y 4
K E Y 5
S P K
O U T 2
5 1 0 W
K E Y 3
8 W
O U T 3
I/O 2
0 .1 m F
K E Y 1
K E Y 2
I/O 1
I/O 1
I/O 2
R
K E Y 1
D D
5 1 0 W
K E Y 2
H T 8 1 X X X
V
8 /1 6 /3 2 W
S P K
D D
5 1 0 W
5 1 0 W
5 1 0 W
K E Y 1
O U T 1
K E Y 3
0 .1 m F
D D
V D D
K E Y 2
V
0 .1 m F
5 1 0 W
K E Y 3
K E Y 1
D D
O S C I
V S S
November 21, 2006
HT81XXX
V
K E Y 1
K E Y 5
K E Y 2
K E Y 6
K E Y 3
K E Y 7
K E Y 4
K E Y 8
K E Y 1
D D
V D D
K E Y 2
K E Y 3
K E Y 4
O U T 1
H T 8 1 X X X
I/O 1
I/O 2
R
O S C
O S C I
K E Y 1
K E Y 5
K E Y 2
K E Y 6
K E Y 3
K E Y 7
K E Y 4
K E Y 8
K E Y 1
K E Y 4
O S C
O S C I
0 .1 m F
V D D
O U T 1
H T 8 1 X X X
V S S
K E Y 6
K E Y 3
K E Y 7
K E Y 4
K E Y 8
K E Y 1
D D
0 .1 m F
V D D
K E Y 2
K E Y 3
K E Y 4
O U T 1
H T 8 1 X X X
R
I/O 1
I/O 2
O S C
O S C I
5 1 0 W
K E Y 2
5 1 0 W
O U T 2
5 1 0 W
K E Y 1
8 /1 6 /3 2 W
S P K
O U T 3
V
K E Y 5
8 0 5 0
2 0 0 W
D D
I/O 1
I/O 2
R
8 W
S P K
V S S
K E Y 2
K E Y 3
8 /1 6 /3 2 W
S P K
O U T 2
O U T 3
V
Rev. 1.50
0 .1 m F
8 W
S P K
O U T 2
O U T 3
2 0 0 W
8 0 5 0
V S S
15
November 21, 2006
HT81XXX
OTP Type
V
0 .1 m F
K E Y 1
K E Y 2
K E Y 4
K E Y 5
K E Y 6
R
V
O S C
K E Y 3
K E Y 4
R
O S C
K E Y 3
K E Y 4
K E Y 6
R
Rev. 1.50
O S C
S P K
O U T 2
K E Y 3
K E Y 4
K E Y 5
O U T 3
I/O 2
O S C I
R
K E Y 4
V P P
H T 8 1 R X X
K E Y 2
K E Y 3
8 W
S P K
2 0 0 W
K E Y 4
K E Y 5
8 0 5 0
K E Y 6
V S S
R
D D
V D D
V P P
O E
O U T 1
K E Y 3
H T 8 1 R X X
V
8 /1 6 /3 2 W
S P K
K E Y 1
D D
K E Y 2
K E Y 3
K E Y 4
O U T 2
K E Y 5
I/O 1
O U T 3
I/O 2
O S C I
O S C
H T 8 1 R X X
R
16
O S C
8 W
S P K
O U T 2
O S C I
D D
V D D
V P P
K E Y 4
H T 8 1 R X X
I/O 1
2 0 0 W
8 0 5 0
V S S
V
D D
V D D
V P P
K E Y 2
O E
O U T 1
K E Y 3
K E Y 4
8 W
S P K
O U T 2
O U T 3
I/O 2
O S C I
K E Y 1
O E
O U T 1
K E Y 2
K E Y 3
8 0 5 0
V S S
V
K E Y 1
2 0 0 W
O U T 3
H T 8 1 R X X
8 /1 6 /3 2 W
S P K
O U T 2
I/O 1
O U T 3
I/O 2
V S S
8 /1 6 /3 2 W
S P K
I/O 1
0 .1 m F
K E Y 2
K E Y 4
K E Y 1
8 /1 6 /3 2 W
S P K
O U T 2
O U T 3
V
K E Y 1
O E
O U T 1
I/O 1
I/O 2
O S C I
K E Y 3
K E Y 4
O E
O U T 1
0 .1 m F
K E Y 2
K E Y 3
O S C
D D
V D D
V P P
K E Y 2
I/O 2
V S S
V
K E Y 1
8 0 5 0
V D D
K E Y 1
5 1 0 W
K E Y 4
K E Y 5
8 W
5 1 0 W
K E Y 3
K E Y 2
5 1 0 W
K E Y 2
H T 8 1 R X X
K E Y 1
D D
I/O 1
0 .1 m F
K E Y 1
O U T 1
V
8 /1 6 /3 2 W
S P K
5 1 0 W
K E Y 2
O E
D D
5 1 0 W
5 1 0 W
5 1 0 W
K E Y 1
V P P
K E Y 2
0 .1 m F
D D
V D D
K E Y 1
V
0 .1 m F
5 1 0 W
K E Y 3
D D
O S C I
V S S
November 21, 2006
HT81XXX
V
K E Y 1
K E Y 5
K E Y 2
K E Y 6
K E Y 3
K E Y 7
K E Y 4
K E Y 8
K E Y 1
V D D
0 .1 m F
V P P
K E Y 2
K E Y 3
K E Y 4
O S C
H T 8 1 R X X
O S C I
K E Y 1
K E Y 2
K E Y 6
K E Y 3
K E Y 7
K E Y 4
K E Y 8
K E Y 1
K E Y 4
O S C
V D D
0 .1 m F
V P P
H T 8 1 R X X
K E Y 6
K E Y 3
V S S
K E Y 7
K E Y 4
K E Y 8
D D
0 .1 m F
V D D
V P P
K E Y 2
K E Y 3
K E Y 4
R
O S C
O E
O U T 1
H T 8 1 R X X
I/O 1
I/O 2
O S C I
O U T 2
O U T 3
O S C I
K E Y 1
5 1 0 W
5 1 0 W
K E Y 2
8 /1 6 /3 2 W
S P K
5 1 0 W
K E Y 1
O E
O U T 1
V
K E Y 5
8 0 5 0
2 0 0 W
D D
I/O 1
I/O 2
R
8 W
S P K
V S S
K E Y 2
K E Y 3
8 /1 6 /3 2 W
S P K
O U T 2
O U T 3
V
K E Y 5
O E
O U T 1
I/O 1
I/O 2
R
Rev. 1.50
D D
8 W
S P K
O U T 2
O U T 3
2 0 0 W
8 0 5 0
V S S
17
November 21, 2006
HT81XXX
Package Information
16-pin DIP (300mil) Outline Dimensions (Plastic)
A
B
1 6
9
8
1
H
C
D
a
G
E
I
F
Symbol
A
Rev. 1.50
Dimensions in mil
Min.
Nom.
Max.
745
¾
775
B
240
¾
260
C
125
¾
135
D
125
¾
145
E
16
¾
20
70
F
50
¾
G
¾
100
¾
H
295
¾
315
I
335
¾
375
a
0°
¾
15°
18
November 21, 2006
HT81XXX
Holtek Semiconductor Inc. (Headquarters)
No.3, Creation Rd. II, Science Park, Hsinchu, Taiwan
Tel: 886-3-563-1999
Fax: 886-3-563-1189
http://www.holtek.com.tw
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Tel: 886-2-2655-7070
Fax: 886-2-2655-7373
Fax: 886-2-2655-7383 (International sales hotline)
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Tel: 86-21-6485-5560
Fax: 86-21-6485-0313
http://www.holtek.com.cn
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46729 Fremont Blvd., Fremont, CA 94538
Tel: 1-510-252-9880
Fax: 1-510-252-9885
http://www.holmate.com
Copyright Ó 2006 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 present a risk to human life
due to malfunction or otherwise. Holtek¢s products are not authorized for use as critical components in life support devices
or systems. 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.
Rev. 1.50
19
November 21, 2006