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RTS903 - DUAL-TONE MELODY GENERATOR

Download the RTS903 datasheet PDF. This datasheet also covers the RTS903_M variant, as both devices belong to the same dual-tone melody generator family and are provided as variant models within a single manufacturer datasheet.

General Description

RTS903 is a CMOS LSI designed for toys, doorbells, music boxes, and melody clocks/timers.

It is designed to play pre-programmed melody and is capable of generating dual-tone melody and natural sounds in piano effect.

Key Features

  • - Wide operating voltage range: 2.4V to 5.0V Low Stand-by current 768-note ROM memory Direct LED drive, where LED flash is programmable. Typical oscillator frequency: 128 KHz Built-in digital envelope 1 sequence trigger key Audio output drives speaker directly. Power-ON Reset; melody begins from the first note. General.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (RTS903_M-Square.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number RTS903
Manufacturer M-Square
File Size 109.28 KB
Description DUAL-TONE MELODY GENERATOR
Datasheet download datasheet RTS903 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
RTS903 DUAL-TONE MELODY GENERATOR Features - Wide operating voltage range: 2.4V to 5.0V Low Stand-by current 768-note ROM memory Direct LED drive, where LED flash is programmable. Typical oscillator frequency: 128 KHz Built-in digital envelope 1 sequence trigger key Audio output drives speaker directly. Power-ON Reset; melody begins from the first note. General Description RTS903 is a CMOS LSI designed for toys, doorbells, music boxes, and melody clocks/timers. It is designed to play pre-programmed melody and is capable of generating dual-tone melody and natural sounds in piano effect. By pushing the sequence trigger key, all songs are sequentially selected and played with an Auto -Stop function. In addition, RTS903 provides PLED and PEN pins to drive LED and the motor.