[Super Device]

General Description
SD998 series are SDs CMOS melody IC. This IC generates high quality dual tone output with digital envelope. Two kinds of operation modes can be selected, piezo-buzzer or speaker output.

FEATUREs
• 1.3V to 3.3V power supply.
• Built in oscillator.
• Dual D/A envelope output.
• 128 Notes ROM.
• piezo-buzzer or speaker output driven by external transistor.
• Level hold or one-shot fuction can be re-triggerable.