The SM1350 is single-chip high tone quality melody CMOS IC with up to 16 melodies selectable from pre-programmed memory, as established by user or from versions offered as standard product
2 standard versions are available; SM1350AAQM has 6 melodies, SM1350ADJM has 16 melodies (see individual datasheets)

Mask programmed versions customize melodies or tones, chimes, unique alarms, for clocks, door bells, and white good seeking high tone quality output.
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