ATmega8a gets hot on 5v!

Using Arduino Project Guidance
1

I am using an ATmega8a for a project. It is power by a 5.2v power supply. I have only connected a speaker to generate white noise on it but the IC gets hot after sometime. I want to run it for almost 12 hours for sleeping aid. But I think that it will get destroyed till 12hrs. Please help. The operating voltage of ATmega8a is 5.5v

2

Schematics would be usefull.
Isn't 5.0 volt the nominal voltage. 5.5 is likely absolut maximum voltage.

3

Hi,
Please show us how you are driving the speaker and its associated components?
What impedance/resistance is the speaker?

Do you have a DMM?

Thanks.. Tom... :smiley: :+1: :coffee: :australia:

4

8 ohm speaker?

5

Yes, i am driving the speaker without a resistor. I forgot to add on on the perfboard, thanks that could be causing the problem

6

Most likely, the ATmega8 has been destroyed, so start fresh! They are cheap.

7

I think the chip is damaged.

8

Does it get hot without speaker?
Or can it still do a blink sketch.
You might be lucky.

9

Hi,
Have you Googled:

ATmega8 speaker

There are quite a number of projects that show you how to use a speaker with that controller.

Tom.. :smiley: :+1: :coffee: :australia:

10

It doesn't get hot without the speaker

11

What are the additional components that you're using? Any resistor,capacitor etc.?

12

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