HT3820 - Holtek

HT3820 128 Note Melody Generator

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 accompa.

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 Ch.