Hi, all!
I'm just trying to get an ATTINY to talk to an SD card. My question is this: If I supply the ATTINY with a regulated 3.3V supply, will it spit out 3.3V logic when interfacing with the SD card, or will it spit out 5V?
Thanks! - Runningman
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Thanks for the swift reply. The question was a this-or-that question, so I can't tell if you're joking or simply implying that it goes all over the place.
The answer is: The supply voltage
Meaning if the supply voltage is 3.3V, it will spit out 3.3V.
An IC will not output a voltage higher than the highest voltage you put into it (normally Vcc), or lower than the lowest voltage you put into it (normally ground).
Generating voltages outside that range requires effort (it's known as a DC-DC converter, and involves a switching regulator IC - plus at least one capacitor, and usually an inductor, as well as other auxiliary components).
Good to know. Thanks a lot, guys! 