HT3421A 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.
HT3421A Key Features
- The IC substrate should be connected to VDD in the PCB layout artwork
- O O O O
- PMOS Open Drain PMOS Open Drain CMOS NMOS Open Drain
- CMOS Pull-High
- CMOS Pull-High CMOS Pull-High