ESP32 of GPIO
Posted: Tue Aug 21, 2018 2:43 am
请问有谁知道ESP32内部上拉电阻是多大？
From the datasheet section 5.3, pull-up resistance is typically 45kΩ. Minumum and maximum values are not specified.
By connecting a resistor to ground and measuring the voltage, I am measuring a pull-up resistance of 23kΩ but that is just for one pin on one ESP32.