I connected Attiny24A in reverse when programming with Arduino, will it cause damage?

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1

Hello, I was programming Attiny24A with Arduino pro mini by using old style wiring. I connected the ATtiny in the wrong way and applied 5V between pin7 and pin8. There was a previous code loaded to ATtiny and those pins were configured as output on start() function and they were set low. I didn't try to load any sketch because I noticed my mistake and unplugged the USB within seconds. Will this cause damage to the MCU?

Picture of wiring:

IMG_20221020_232656
IMG_20221020_2326561920×2566 315 KB

Pin 1 must have been connected to the red wire but it was connected to the green one.
Thanks.

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Just check it instead of questions...

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What should I look for? It is still working but I don't know if it will give faulty in the future.

4

If it works, then most likely everything is fine.
And what will happen in the future - no one can tell you

5

If you mean pin 7 and pin 8 on the ATTiny 14 pin SOIC package, then there is an excellent chance that the chip was destroyed. Certainly destroyed, if it was not properly powered at Vcc and GND.

Happens to all of us, from time to time.

6

Which one? The one on the Pro Mini or the one on the Attint24?

There is a chance that you have damaged both.

That's far too long; picoseconds should be more suitable :wink:

Joking aside, I would probably throw both away. Alternatively mark the involved components so you know that they potentially are damaged; you can use them for e.g. development (I would never put them in a final product) and if they give you grey hairs you at least know what the possible reason is.

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