ESP8266 Community Forum

- Sun Apr 19, 2015 8:30 am #15024 I've tried looking around for it, incl. https://nurdspace.nl/ESP8266, but I can't quite see where the voltage of the GPIO pins is specified. Does anyone know?

Thanks

- Sun Apr 19, 2015 8:37 am #15025 It is a 3.3V nominal device, so output voltage is quite the same. Specs says 0.8 x VDD for minimal Voh with a Imax of 12mA.

- Sun Apr 19, 2015 8:53 am #15026

It is a 3.3V nominal device, so output voltage is quite the same. Specs says 0.8 x VDD for minimal Voh with a Imax of 12mA.

I see. So is the input voltage to the GPIO also 3.3V?

Thanks

- Sun Apr 19, 2015 9:01 am #15027 Yes ! Although some people says that they are 5V tolerant, specs says Vih max 3.6V.