quantumkid
New Member
I'm sure this is a easy/stupid question, but I'm quite new to electronics.
I want to pull voltage from the VCC pin (pin28 connected to 5v supply) on a MCU to set a address pin (pin1) high using a 10k resistor between the pins. Now if I ground pin1 with a switch I know it will go low, but will that pull pin28 low as well (act as a pull down)? If so I'll use a switch and kill the conntection between the pin28 and pin1 when 1 goes to ground, but I'm just not sure if I need to do that since the drop across the resistor should be quite low. Thank you
I want to pull voltage from the VCC pin (pin28 connected to 5v supply) on a MCU to set a address pin (pin1) high using a 10k resistor between the pins. Now if I ground pin1 with a switch I know it will go low, but will that pull pin28 low as well (act as a pull down)? If so I'll use a switch and kill the conntection between the pin28 and pin1 when 1 goes to ground, but I'm just not sure if I need to do that since the drop across the resistor should be quite low. Thank you
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