SNC322 is a 1-channel voice synthesizer and dual-tone melody IC with PWM direct drive
circuit. It built-in a 4-bit tiny controller with one 4-bit input port and two 4-bit
I/O ports. By programming through the tiny controller in SNC322, user’s varied applications
including voice section combination, dual-tone melody, key trigger arrangement, output
control, and other logic functions can be easily implemented.
