New posts in Pullup

Why do some PCB designers put pull-up resistors on pins where there is already an internal pull-up?

Do microcontrollers have a big resistance?

MCU with ultra low energy gpio input

Does this design smell bad? Can I pull a pin simultaneously down and up?

Is a pull up/down resistor really necessary?

Why would you enable pullup for a GPIO pin in push-pull mode?

Reasons for having MCU pin-states default to pull-up/down out of reset

Optional pull-up resistors for I²C

Why I2C designed to work with pull-up resistors and not pull-down ones?

Pull-up resistor - why input pin is pulled to ground when the switch is closed?