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hbaocr
Joined: 13 May 2007
Posts: 247
Helped: 15
Location: Hochiminh City university of technology (VietNam)
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 11 Jun 2007 3:26 Help me about the function of the music IC, How to use it |
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I want to make a Music greeting cad to present my friend, And I have buoght music IC,The rhythm of it generated is "Happy Birth Day"
I can't find the function of Pins IC on internet, please help me the fucntion of pins of that IC.And how to Use that IC .Example Such as , voltage of it , what pin generate signal,what pin is VCC, and what pin is GND. Thank you very much
I think It made in china.Please send me the document which language is English
my mail: hbaocr(at)yahoo.com
Here the Picture of IC.
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the_risk_master
Joined: 12 Aug 2005
Posts: 688
Helped: 59
Location: UE+MIT, Philippines, (14°N , 120°E )
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11 Jun 2007 4:35 Re: Help me about the function of the music IC, How to use i |
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| Whos tha manufacturer? Part number?
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hbaocr
Joined: 13 May 2007
Posts: 247
Helped: 15
Location: Hochiminh City university of technology (VietNam)
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11 Jun 2007 7:23 Help me about the function of the music IC, How to use it |
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| I don't know the manufacturer It don't write on IC, but there is only the Number is H82.
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rupesh
Joined: 12 Dec 2002
Posts: 29
Helped: 1
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11 Jun 2007 7:43 Re: Help me about the function of the music IC, How to use i |
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is there only one tune or more ? if only one tune then you need to just pass a supply signal... if more then you have to find out a logic signal on pin by some testing through multimeter...
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11 Jun 2007 7:43 Ads |
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hbaocr
Joined: 13 May 2007
Posts: 247
Helped: 15
Location: Hochiminh City university of technology (VietNam)
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11 Jun 2007 18:22 Help me about the function of the music IC, How to use it |
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Hello Rupesh, Thank for your replying my top pic
You can see that IC on picture above! I also want to test that IC , but I don't the Pin diagram of that IC! You know, I can't find Which Pin is VCC, Which Pin is GND , SO how can i test it.
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Eugen_E
Joined: 29 Nov 2004
Posts: 358
Helped: 31
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11 Jun 2007 20:26 Re: Help me about the function of the music IC, How to use i |
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Try to find a similar greeting card and see how is wired.
Some track look like for a battery holder?
What follows is a simple guess:
The pin and track that ocupies high area should be ground. If you found ground, you can check with multimeter from every pin to ground to see an internal protection diode. There may also be a protection diode to VCC, so you can find VCC. - Those are so called "clamping diodes", inside the chip, and are connected in opposed direction to the power voltage.
The speaker may be connected differentialy (not grounded at one pin), so two pins with the same shape can be for speaker.
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