ESP8266 Community Forum

Everywhere I look, I see it written that the maximum voltage on the analog pin of the ESP8266 is 1.0V. My question is, what is meant by "maximum voltage": is it the maximum voltage that is safe for the circuitry (as in going above 1V will damage something) OR is it the voltage at which the reading from the pin will saturate. In other words, if I give it 1.5V for example, will I fry something, or will I just get the maximum reading? And if it's the latter, is 3.3V the max before things start breaking?

Thanks!

Hi rocket_man,

1V it the voltage at which the reading from the pin will saturate. Regarding the voltage "not to fry something" , I could not find it directly in the data sheet. Therefore, to be on a safe side, I would assume 3.6V that is the maximum working voltage of ESP8266 in Table 2.2. Electrical Characteristics of ESP8266EX Datasheet Version 4.4.

Krzysztof

I'm glad to hear I won't fry my board haha. Thank you for the information and the link to the data sheet, Krzysztof!