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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Skip to main content. The beat generator is also a programmed divider which contains 15 available beats. It has an inbuilt tone and a beat generator. Here the musical IC UM66 generates the music when it receives supply and drives a small speaker through a class c amplifier using silicon transistor Datasheey. You need off voice recorder circuit interfaced with a amplifier circuit.

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. Resistor R1 limits the base current of Q1 within the safe values.

(PDF) UM66 Datasheet download

Do not exceed 4. Hello I cant get that circuit in digikey. The tone generator is a programmed divider which produces certain frequencies. Arduino based GPS receiver.


The component details with cost is also with this. This IC is easy to use because it can work on low voltage 0. It is datasheett for use in bells, telephones, toys etc.

I will add a voice recorder circuit soon. It has a 62 notes ROM to uj66 music. In this circuit please don’t give the supply beyond 3 volt without.

Melody Generator using IC UM66

Leave a Reply Cancel reply Your email address will not be published. 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. Is capacitor helps in sound suppression in this circuit?

Capacitor C1 is meant for noise suppression. It can also be easily interfaced with a normal Piezo electric speaker even buzzer or to a 6 ohm speaker through a NPN transistor as shown below. You may also like: This is the simplest ever musical calling bell that can be easily built. It is better that you should not run this circuit.

I will help you. Like Admin has stated, UM66 lf designed and manufactured with those melodies. Counting of number of zeros,even and odd numbers in an array.

Touch Controlled Musical Bell. Submitted by admin on 24 October Melody begins from the first note if power is reseted. The battery supply should be kept in a battery container to ensure the connection.


SPI Module of Arduino. Previous post Next post. Many versions of UM66T are available which generate tone of different songs. Component Description IC and Transistor.

We have already learnt how Zener can be used as Regulator dagasheet how the Zener resistor value R1 can be calculated.

UM66 IC Datasheet | Melody IC Pin Diagram

What is Web Browser. The circuit can be made even without soldering and the ideal for the first electronic project for newbies. C1 is used to decouple power supply to avoid inter-modulation between output and IC.

TL — Programmable Reference Voltage. Connection Diagram The connection diagram is shown below. Thanks for the CMOS technology. The details about the IC can be found here http: This project is suitable for beginners as its circuit is og simple.

Your email address will not be published. Here the musical IC UM66 generates the music when it receives. The component details with cost is also with.