DataSheet: PDF icon UMpdf. UM66T is a melody integrated circuit. It is designed for use in bells, telephones, toys etc. It has an inbuilt tone and a beat. DESCRIPTION. The UTC UM66TXXL series are CMOS LSI designed for using in door bell, telephone and toy application. It is an on-chip ROM programmed for. BT66T is an easy to use 3 terminal Melody generator IC. It is mainly used in circuits where a tone has to be played as a notification for the user.

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The battery supply should be kept in a datashest container to ensure the connection. Interface GPS with Arduino.

Previous post Next post. Do remember that this IC will be able to play only one tone, if you need a different tone you have to use a different IC with a different part number as shown above.

BT66T Melody Generator Pinout, Description, Equivalent & Datasheet

Hello I cant get that circuit in digikey. I have searched for icum66 in the market but cannot find one. It has a built in ROM programs for playing music.


There is an inbuilt oscillator circuit that serves as a time base for beat and tone generator. The speaker is connected in series with the transistor so that the tone can be played in the speaker.

UM66 Datasheet PDF

This is the simplest ever musical calling bell that can be easily built. The output of the IC that is the melody can be obtained at datasheett pin BD pin3. Your email address will not be published.

Whistle to Beep Circuit. Is capacitor helps in sound suppression in this circuit? We have other Tone Generator circuits that you may like; Take a look: Dear sir, could you forward me a 30second sound circuit that activated by another speaker out alarm clock Thanks shyaman.

Melody Generator using IC UM66

Touch Controlled Musical Bell. Powers the IC, typically with 3. Interface SD Card with Arduino. Capacitor C1 is meant for noise suppression. It is better that you should not run this circuit in Eliminator as most of the available eliminator don’t have a good filter built in and have no precision over voltage protection. The part number and its respective tone is mentioned in the table below, you can Google the tone name to listen to the type of tone the IC will play.


The details about the IC can be found here http: If you get a distorted sound you can add uF electrolytic capacitor in parallel to C1. What can be done to strengthen the multiplier circuit? What is Web Browser.

I will help you. Component List with cost Approximate. It has a 62 notes ROM to play music.

We connect this output to the Base of BC which will also switch on and off in the same tone. Submitted by admin on 24 October Connection Diagram The connection diagram is shown below. I think the explanation i gave is enough to understand the circuit. Like Admin has stated, UM66 is designed and manufactured with those melodies.

It is not possible to store our own music in UM Virgin Galactic — Commercial Space Flight.