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Keyboard Instrument. HT3494 Datasheet

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Keyboard Instrument. HT3494 Datasheet






HT3494 Instrument. Datasheet pdf. Equivalent




HT3494 Instrument. Datasheet pdf. Equivalent





Part

HT3494

Description

Multi-Function Keyboard Instrument



Feature


HT3494 Multi-Function Keyboard Instrumen t Features • • • • • • • • • • • • • Operating volt age: 3.3V~5.1V On-chip crystal oscillat or: 3.58MHz 49-key instrument and compa ss range from C2~C6 15 outputs for key scanning 8 inputs for key scanning 32 p ercussion/voice space for rhythm progra mming 100 timbers 100 rhythms 5 percuss ions/voices 10 melodies 8-bit D/A audio outp.
Manufacture

Holtek

Datasheet
Download HT3494 Datasheet


Holtek HT3494

HT3494; uts 4 percussion/voice channels output 8 melody channels output • • • • • • • • • • • • Tempo adjustable Memory function with 2 6 notes recordable Auto-bass-chord func tion Transpose function 5-chord effect Vibrato function Sustain effect Fill-in effect Chord with single or multi-keys pressed Chord with a key synchronously pressed 2 seven-segment LEDs to display ope.


Holtek HT3494

ration status Indicator for chord operat ion 40 DIP enclosed General Descriptio n The HT3494 is a CMOS VLSI designed fo r musical instruments, especially 49-ke y multi-function instruments. The HT349 4 is built-in with a controller and an ETS (Electrical Tone Synthesizer). The HT3494 provides built-in melodies, rhyt hms, timbers and percussion/voice outpu ts. The status of .


Holtek HT3494

operating system is displayed through 2 seven-segment LEDs. The HT3494 also pro vides an auto-bass-chord function, memo ry function as well as programmable rhy thm in addition to basic playing functi ons. 1 15 Aug ’96 Free Datasheet h ttp://www.datasheet4u.com/ HT3494 Pin Assignment Pad Assignment Chip size: 3 920 × 3730 (µm)2 * The IC substrate s hould be connected to .

Part

HT3494

Description

Multi-Function Keyboard Instrument



Feature


HT3494 Multi-Function Keyboard Instrumen t Features • • • • • • • • • • • • • Operating volt age: 3.3V~5.1V On-chip crystal oscillat or: 3.58MHz 49-key instrument and compa ss range from C2~C6 15 outputs for key scanning 8 inputs for key scanning 32 p ercussion/voice space for rhythm progra mming 100 timbers 100 rhythms 5 percuss ions/voices 10 melodies 8-bit D/A audio outp.
Manufacture

Holtek

Datasheet
Download HT3494 Datasheet




 HT3494
HT3494
Multi-Function Keyboard Instrument
Features
Operating voltage: 3.3V~5.1V
On-chip crystal oscillator: 3.58MHz
49-key instrument and compass range from
C2~C6
15 outputs for key scanning
8 inputs for key scanning
32 percussion/voice space for rhythm pro-
gramming
100 timbers
100 rhythms
5 percussions/voices
10 melodies
8-bit D/A audio outputs
4 percussion/voice channels output
8 melody channels output
General Description
The HT3494 is a CMOS VLSI designed for mu-
sical instruments, especially 49-key multi-func-
tion instruments. The HT3494 is built-in with a
controller and an ETS (Electrical Tone Synthe-
sizer).
The HT3494 provides built-in melodies,
rhythms, timbers and percussion/voice outputs.
Tempo adjustable
Memory function with 26 notes recordable
Auto-bass-chord function
Transpose function
5-chord effect
Vibrato function
Sustain effect
Fill-in effect
Chord with single or multi-keys pressed
Chord with a key synchronously pressed
2 seven-segment LEDs to display operation
status
Indicator for chord operation
40 DIP enclosed
The status of operating system is displayed
through 2 seven-segment LEDs.
The HT3494 also provides an auto-bass-chord
function, memory function as well as program-
mable rhythm in addition to basic playing func-
tions.
1 15 Aug ’96
Free Datasheet http://www.datasheet4u.com/




 HT3494
Pin Assignment
Pad Assignment
HT3494
Block Diagram
Chip size: 3920 × 3730 (µm)2
* The IC substrate should be connected to VSS in the PCB
layout artwork.
2 15 Aug ’96
Free Datasheet http://www.datasheet4u.com/




 HT3494
HT3494
Pad Coordinates
Pad No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
X
–1679.00
–1781.30
–1781.30
–1781.30
–1781.30
–1781.30
–1781.30
–1781.30
–1754.90
–1767.90
–1414.90
–1190.10
–919.30
–694.50
–423.70
–198.90
71.90
296.70
564.80
1069.80
1640.10
Y
1649.45
1335.25
1054.45
779.85
499.05
224.45
–56.35
–330.95
–1333.75
–1625.55
–1647.50
–1647.45
–1647.45
–1647.45
–1647.45
–1647.45
–1647.45
–1647.45
–1638.55
–1699.45
–1650.05
Pad No.
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
X
1781.30
1781.30
1781.30
1781.30
1781.30
1781.30
1781.30
1781.30
1777.80
1742.70
1419.50
834.10
542.60
268.00
–12.80
–287.40
–568.20
–842.80
–1123.60
–1398.20
Unit: µm
Y
–1323.25
–1098.45
–827.65
–602.85
–332.05
–107.25
163.55
388.35
633.55
1654.45
1654.45
1654.45
1649.45
1649.45
1649.45
1649.45
1649.45
1649.45
1649.45
1649.45
Pin Description
Pin No. Pin Name
38~40,
1~5
C8~C15
6 CLED
7~13 C1~C7
14 REST
I/O
Internal
Connection
Description
Keyboard scanning outputs
These pins are also used to drive 7-segment LED
O CMOS display. The LED display segments: “b”, “dot”, “a”,
“c”, “ f ” , “d”, “g” and “e” are driven by C8~C15
individually.
O
CMOS
Chord indication output
This pin directly drives an LED for applications.
Keyboard scanning outputs
C6 and C7 are used as common pins to generate a
O CMOS scanning drive signal for 7-segment LED display.
C6 drives the left digit and C7 the right digit of
7-segment display (see the application circuit).
System reset input, active low
I CMOS Connect this pin to VDD (or pull-high) for normal
applications.
3 15 Aug ’96
Free Datasheet http://www.datasheet4u.com/



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