in 8051 microcontroller port0 has no internal pullup why?

Answer Posted / shruthi

port 0 is open drain hence it requires pull ups and all other ports r not open drain its not left to user if it has to be used as i/o port its must to connect pull up resistor

Is This Answer Correct ?    40 Yes 17 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

name the institue for l1,l2 tranning

1661


hi... if anybody wrote Airport Authority of India(ATC) examination.... pls kindly post the Questions wat they asked... specially in English & Reasonings.... it will useful to all others who are going to write AAI (Electronics) exam....

1711


How to find resistivity?

617


proff of ERLANG B formula???

1628


What are the different turn on methods of scr?

586






What is the difference between latches and flip flop?

545


Where to use friend function in binary operator overloading . How? explain with an example.

1577


Describe the working of four quadrant chopper?

563


Explain the toggle state in JKMS FF.

2524


can u split the Point code switch(PC)

1771


HI FRANDS , ANY ONE SUGGEST ME THE INTERVIEW QUESTION OF NHPC

1354


what is the ratio of Rf &R1 in wean bridge oscillator

1511


simplification of Boolean Expression- A+A'B.

587


will you provide me NTPC exam?

1777


Please provide details of the following standards :rs-23-c 802.3 x.25 802.11?

561