I'm trying to get the ATtiny13A to run on 3.3V which, if I'm not wrong, would be possible.
I've programmed the chip using an Arduino Uno. I'm doing a simple blinking LED example and when I power the ATtiny with Arduino's 5V pin it works without any problem. If I power it with Arduino's 3.3V pin it does not light the LED.
This is my Arduino IDE's config when programming the ATtiny:
I've tried other configurations also.
Am I doing something wrong? Do I need to program it in a different way or do something else?
Edit to add more info:
I'm using this guide (or a similar one, don't exactly remember if it was that one). This is how the connections look like:
Red LED connected to pin 4 with a 220ohm resistor. Also, I've measured voltage on that pin 4 of the ATtiny when connected to 5V and it's outputting ~6V but 0V when connected to 3.3V.