Description
The H66T19/32/68 series is a CMOS LSI designed for use in door bell, telephone and toy applications. It is an on-chip ROM program-med for music performance. Produced by COMS technology, the device results in very low power consumption. Since the H66T19/32-/68 series includes oscillation circuits, a compact melody module can be constructed with only a few additional components.

FEATURE
• 64-Note ROM memory
• 1.5V to 3V power supply and low power consumption
• Dynamic speaker can be driven with external NPN transistor
• OSC resistor is built-in
• Built-in level hold mode
• Power on reset: melody begins from the first note