BT66 / UM66/FT66 Musical IC

BT66 / UM66/FT66 Simple Melody Generator IC

The BT66 / UM66/FT66 is a compact and efficient melody generator integrated circuit, designed to bring sound to your electronic projects with ease. This versatile IC features an on-chip RC oscillator and a 64-note ROM memory, making it a complete solution for generating musical tones. It supports a sound range of two octaves and offers 15 different tempo settings, from presto to largo, allowing for diverse musical expressions. Whether you need a one-shot melody or a continuous loop, the BT66/UM66/FT66 provides flexible operation modes. It can directly drive a piezo speaker or an external NPN transistor for dynamic speaker output. Ideal for adding sound to toys, alarms, doorbells, and other consumer electronics, this IC ensures reliable performance with its power-on reset function, guaranteeing the melody always starts from the first note. Enhance your designs with this user-friendly and feature-rich musical IC.

Specifications:

• Product Type: Melody Generator IC
• Model Numbers: BT66, UM66, FT66
• Memory: 64-note ROM
• Oscillator: On-chip RC
• Sound Range: 2 Octaves
• Tempo Settings: 15 (Presto-Largo)
• Output Drive: Direct Piezo / External NPN
• Operating Modes: One-shot, Level Hold
• Reset Function: Power-on Reset

Key features and benefits:

• On-chip RC oscillator for standalone operation
• Integrated 64-note ROM memory for melodies
• Supports 2-octave sound range
• 15 selectable tempo settings (Presto to Largo)
• Direct piezo speaker drive capability
• One-shot or level hold melody playback modes
• Power-on reset ensures melody starts from beginning
• External NPN transistor support for dynamic speakers

Applications:

• Electronic toys and games
• Doorbell chimes and alarms
• Greeting cards and musical gifts
• Simple audio indicators
• DIY electronic projects
• Educational kits

Package Includes:

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