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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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. It has an inbuilt tone and a datashewt generator. We have other Tone Generator circuits that you may like; Take a look: The circuit can be made even without soldering and the ideal for the first electronic project for newbies.

If you get a distorted sound you can add uF electrolytic capacitor in parallel to C1. Powers the IC, typically with 3. Thanks for the CMOS technology.

We have already learnt how Zener can be used as Regulator and how the Zener resistor value R1 can be calculated. Connected to the ground of Circuit.

This is the simplest ever musical calling bell that can be easily built. The BT66T can operate only below voltage range 3.


Whistle to Beep Circuit. The speaker is connected in series with the transistor so that the tone can be jn in the speaker.

The output of the Um6 that is datawheet melody can be obtained at the pin BD pin3. In this circuit please don’t give the supply beyond 3 volt without. UM66 is a 3 pin melody device. Leave a Reply Cancel reply Your email address will not be published.

Your email address will not be published. Submitted by admin on 24 October The device has very low power consumption. The melody will be available at pin 3 of UM66 and here it is amplified by using Q1 to drive the speaker.

UM66T is a melody integrated circuit. In this circuit please don’t give the supply beyond 3 volt without modification as the IC may got damaged. If anyone want to reduce the volume of the circuit then insert a resistance in place of the blue line connection. As mentioned in the features, the BT66T comes in five different part numbers.

I have searched for icum66 in the market but cannot find one. Dataeheet has a built in ROM programs for playing music. Data sheet of UM66 is there in the datasheet section of the site. Where can i buy Which is the nte replacement. The battery supply should be kept in a battery container to ensure the connection.

(PDF) UM66 Datasheet download

TL — Programmable Reference Voltage. Capacitor C1 is meant for noise suppression. It has a 62 notes ROM to play music. Choosing Motor For Robots. Hello I cant get that circuit in digikey. This is the output pin, where tone is generated. 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 BCb.

  IEC 61666 PDF

This is a simple project using the IC UM The volume of the sound of this circuit is so much that it can be used as a calling bell.

UM66 IC Datasheet | Melody IC Pin Diagram

The component details with cost is also with. Complete Technical Details can dafasheet found at the datasheet given at datasheeet end of this page. The details about the IC can be found here http: Interface GPS with Arduino. The speaker can be driven by an external npn transistor connected to the output of UM Arduino based GPS receiver.

It is better that you should not run this circuit. Connection Diagram The connection diagram is shown below.

Dear sir, could you forward me a 30second sound circuit that activated by another speaker out alarm clock Thanks shyaman. You need a voice recorder circuit interfaced with a amplifier circuit. Component Description IC and Transistor.

UM66 has an inbuilt beat and tone generator. Datahseet begins from the first note if power is reseted. C1 is used to decouple power supply to avoid inter-modulation between output and IC.

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