The SM1125ABV melody IC was designed for use in cell phones and pagers and is used for notification and alarms in battery operated equipment, operates from 2 to 3.6 volts, and outputs to a piezo-speaker. There are 12 selectable melodies and power down mode to converse battery life.
Key Features
2.0~3.6V Supply Voltage
0.6 mA (typ) current consumption
12 melodies selectable
Monotone sound generation
2-pin serial data melody selection and 1-pin melody
playback control
Level hold playback mode
Power save function stops the oscillator in no-play modes
SM1125ABV.pdf