HT3421A

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 control both basic keys and function selection inputs.

In the HT3421A 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.