As the title implies. thank you in advance.
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1All of them have. – Gerben Jan 7 '20 at 15:45
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which pins are you referring to? – jsotola Jan 7 '20 at 16:11
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all Digital I/O pins 0 to 13 and A0 to A5. – Abd-AlRahman Muhammad Jan 7 '20 at 16:12
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just wanted to be sure – jsotola Jan 7 '20 at 16:25
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1Note that you need to initialize the pins as INPUT_PULLUP to actually enable the pullup resistor. (Just in case this isn't clear.) – orithena Jan 9 '20 at 11:25
All of them. It's a standard feature on all IO pins in the AVR range.
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Thank you very much :) This is NOT the case in other Microcontrollers am I right? – Abd-AlRahman Muhammad Jan 7 '20 at 15:50
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1Not all microcontrollers have them, that is true (low-end PIC for example). Some only have them on some pins (such as older PIC32MX chips). They are getting more and more popular though (now all modern PIC32MX chips and PIC32MZ chips have them), so more modern chips tend to have them rather than not. – Majenko♦ Jan 7 '20 at 15:52
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1@MichelKeijzers So do modern PIC32 chips (anything since the release of the MX1 / MX2 series). – Majenko♦ Jan 7 '20 at 16:23