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Melody Generator. HT3820 Datasheet

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Melody Generator. HT3820 Datasheet







HT3820 Generator. Datasheet pdf. Equivalent




HT3820 Generator. Datasheet pdf. Equivalent





Part

HT3820

Description

128 Note Melody Generator

Manufacture

Holtek

Datasheet
Download HT3820 Datasheet


Holtek HT3820

HT3820; HT3820 128 Note Melody Generator Feature s • • • • • Working voltage: 2.4V~5.0V 7 tempo options 2 "CHA" enve lopes Normal or octave higher option 4 operation modes • • • Extremely few external components Drive an 8Ω speaker through an NPN transistor 3-pin TO-92 or 16 DIP/SOP package General D escription The HT3820 series are single -chip 128 note melody generators imp.


Holtek HT3820

lemented in CMOS technology. It can play a melody of 128 notes by trigger input or automatically when power is on. Cus tomers’ melody sources are programmed by changing a masking layer during dev ice fabrication. The HT3820 can play va rious musical effects: Chord, Broken Ch ord, "CHA" sound accompaniment. The mas k option can be made to accommodate var ious melodies, tempo.


Holtek HT3820

s, envelopes, and "CHA" sound duration ( refer to the functional description). T he output driver can drive an 8Ω spea ker through an external NPN transistor. The HT3820 is an ultra-miniature devic e and almost no external components are required for normal applications. Pin Assignment IC No. HT3820 Series Pack age Form TO92-A TO92-B 16 DIP/SOP Bond Option TG pad is bo.



Part

HT3820

Description

128 Note Melody Generator

Manufacture

Holtek

Datasheet
Download HT3820 Datasheet




 HT3820
HT3820
128 Note Melody Generator
Features
Working voltage: 2.4V~5.0V
7 tempo options
2 "CHA" envelopes
Normal or octave higher option
4 operation modes
General Description
The HT3820 series are single-chip 128 note mel-
ody generators implemented in CMOS technol-
ogy. It can play a melody of 128 notes by trigger
input or automatically when power is on. Custom-
ers’ melody sources are programmed by changing
a masking layer during device fabrication.
The HT3820 can play various musical effects:
Chord, Broken Chord, "CHA" sound accompani-
ment. The mask option can be made to accom-
Extremely few external components
Drive an 8speaker through an NPN
transistor
3-pin TO-92 or 16 DIP/SOP package
modate various melodies, tempos, envelopes,
and "CHA" sound duration (refer to the func-
tional description).
The output driver can drive an 8speaker
through an external NPN transistor. The
HT3820 is an ultra-miniature device and al-
most no external components are required for
normal applications.
Pin Assignment
IC No.
HT3820
Series
Package Form
Bond Option
Function
TO92-A
TG pad is bonded to VSS pin
Play once
TO92-B
TG, OP1 & OP2 pads are bonded to VSS pin Play repeatedly
16 DIP/SOP
1 19th May ’97
Free Datasheet http://www.datasheet4u.com/





 HT3820
Block Diagram
HT3820
Pad Coordinates
Unit: mil
Pad No. X
Y
1 –41.84 1.44
2 –41.84 –8.03
3 –42.18 –25.8
4 7.54 –34.89
5 14.17 –34.89
6 23.65 –34.89
Pad
No.
7
8
9
10
11
XY
33.13 –34.89
42.61 –34.89
–11.16 34.89
–17.79 34.89
–24.42 34.89
Chip size: 97 × 81 (mil)2
The IC substrate should be connected to VDD in the PCB layout artwork.
2 19th May ’97
Free Datasheet http://www.datasheet4u.com/





 HT3820
HT3820
Pad Description
Pad No.
Pad Name
I/O
Internal
Connection
Description
1 TEST1
For IC test only. This pad can output the system
I/O CMOS operation frequency or supply external clock for
system operation.
2 TEST2
I/O CMOS For IC test only
3 OUT
O CMOS Melody signal output. It’s a PWM signal format.
4 VDD
I — Power supply (positive)
5 TG
I
CMOS
Pull-High
Trigger input, active low
6 VSS
I — Power supply (ground)
7, 8 OP2, OP1
I
CMOS
Operation and trigger mode selection. Refer to the
functional description for details.
9~11 TEST3~TEST5 I/O CMOS For IC test only
Absolute Maximum Ratings
Supply Voltage ............................ –0.3V to 5.5V
Input Voltage ............... VSS–0.3V to VDD+0.3V
Storage Temperature ............... –50°C to 125°C
Operating Temperature ............. –20°C to 75°C
Electrical Characteristics
(Ta=25°C)
Symbol
Parameter
Test Condition
VDD
Condition
VDD Operation Voltage
ISTB1 Stand-by Current
3V No load
5V (when TG is open)
ISTB2 Stand-by Current
3V No load
(for TO-92 package, TG
5V is connected to VSS)
IDD Operation Current
3V
No load (average)
5V
IIL
Input Low Current
(for TG pad)
3V
VIL=0V
5V
3V
IOH Output Source Current
VOH=0.9VDD
5V
3V
IOL Output Sink Current
VOL=0.1VDD
5V
FOSC System Frequency
3V
Min.
2.4
–2
–5
3
5
Typ.
1
2
4
10
130
300
3
8
–3.6
–8.6
5
8.2
256
Max.
5
2
5
8
21
220
500
6
16
Unit
V
µA
µA
µA
µA
µA
µA
µA
µA
mA
mA
mA
mA
KHz
3 19th May ’97
Free Datasheet http://www.datasheet4u.com/



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