I’ve searched across the forum but I didn’t find an answer. Maybe this is a too stupid question… :-[
I’m interfacing Arduino Pro Mini with an IC (i.e. an STN1110). Datasheet recommends to pull-up several unused pins to 3.3V by using the same resistor value: 100K Ohm.
Since I’m trying to save as much space as possible on my PCB board a question has raised to my mind: do I really need to solder several resistors? Could I use just one resistor commonly shared between all that pins?
For example, in the attached schematics, pin 4, 15, 21 and 22 could not share the same resistor pole, while the other is linked to +3.3V? :-![
(I thought: when using 4 distinct resistors the power line will “see” those resistors in parallel, not in series.)