HT3421A Datasheet, PDF (1/10 Pages) Holtek Semiconductor Inc – 41 Matrix Key Multi-Function Piano with a Memory

HT3421A
41 Matrix Key Multi-Function Piano with a Memory
Features
• _{Operating voltage: 2.4V~5V}
• _{System operating frequency: 512KHz}
• _{12 × 7 matrix input keys}
• _{Auto power-off}
• _{Power ON/OFF toggle input}
• _{41 tones, tone area: G2~B5}
• _{8 rhythms}
General Description
The HT3421A is a 41-key musical instrument
LSI implemented in the CMOS technology. The
chip provides 8 rhythms, 8 timbres, 4 pulsatile
sounds, 12 demo songs, and a 62-note memory
storage function. The 12 × 7 matrix control keys
of the HT3421A control both basic keys and
function selection inputs.
Pin Assignment
• _{8 timbres}
• _{16 steps of tempo speed}
• _{4 pulsatile sounds}
• _{12 demo songs}
• _{Memory function with 62 notes}
• _{40 pin dual-in-line package}
In the Memory mode, the chip can store a tone
of 62 notes. Pressing of the Replay key plays the
stored songs, or pressing of OKP1 or OKP2
plays the stored songs tone by tone.
In the Demo mode, one of the 12 demo songs can
be played. The timbre of the demo song can also
be altered according to the instrument chosen.
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28th June ’96