I am interfacing to an EEPROM that works via SPI at 1.8V; unfortunately I do not have a 1.8V power source around and being this a weekend project, I wanted to complete it without going to the shop.
I asked a skilled friend an advice and he suggested I could put a 1.5V AA battery in the circuit to get 1.8V.
Is this a sound configuration? I am a newbie but by gut feelings I feel there is something wrong, in particular regarding current intensity.
Edit 1: I know this is a bad idea, but I am asking here to know why. I could not find a similar question so I believe it will be useful to have here as a reminder of why not to pursue bad ideas like these. I will accept the answer with the explanation of why not to do this. I know it should be done with a voltage regulator, I am asking if it is possible without it, so answer can be yes/no with an explanation. I am also curious to read about anybody that thinks it is possible.
Edit 2: for those interested in the power draw, the EEPROM is a Winbond W25Q64FW and I will use it through a TXB0108 level shifter (side B). For the records, I did not ever try this circuit (in particular after the answers/comments I received) but I am nonetheless very interested in reading what is possible or not.