in 8051 microcontroller port0 has no internal pullup why?

Answer Posted / shankar

For the better understanding of PORT 0 and the concept of pull up registers, you can check this video out.

http://www.youtube.com/watch?v=t9bN-2nFNEs

Is This Answer Correct ?    6 Yes 8 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Define quad?

602


Explain the Proportionates of Ordinary concrete,Standard concrete,High Stength Concrete of Grades "M10,M15,M20" , "M25,M30,M35,M40,M45,M50,M55" , "M60,M65,M70,M75,M80" Respectively.

1689


interface an 8-pin switch with 8085 microprocessor located at 0AAH and LEDs at port 55H, draw the circuit diagram. Write down a program to read the switches and do the following: > if the parity of the switch is odd, start counting upward until it reaches 0FFH. > if the parity of the switch is even, start counting downwards until it reaches 00H.

2821


Define setup time?

637


Explain what is difference between fixed-bias circuit & self-bias circuit?

550






what is a bleeder resistor?

1574


What are the applications of precision diode.

588


How is cad used with electronics? Give example.

557


When a sample of germanium and silicon having same impurity density are kept at room temperature then resistivity of silicon will be higher than that of germanium, why?

563


What is meant by pwm control?

607


Define what is tunnel diode?

634


What is meant by pmdc?

599


What is negative frequency?

547


why interrupt is necessary in microprocessor?

2355


Explain how to format a memory card by using memory card?

696