HT3820 128 Note Melody Generator
Features
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Working voltage: 2.
4V~5.
0V 7 tempo options 2 "CHA" envelopes Normal or octave higher option 4 operation modes
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Extremely few external components Drive an 8Ω speaker through an
NPN transistor 3-pin TO-92 or 16 DIP/SOP package
General Description
The HT3820 series are single-chip 128 note melody generators implemented in CMOS technology.
It can play a melody of 128 notes by trigger input or automatically when power is on.
Customers’ melody sources are programmed by changing a masking layer during device fabrication.
The HT3820 can play various musical effects: Chord, Broken Chord, "CHA" sound accompaniment.
The mask option can be mad...