8051 Pins
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- Question 1 of 20
1. Question
The Intel 8051 has ____ pins.
CorrectIncorrect - Question 2 of 20
2. Question
Number of I/O ports in the microcontroller is _____ (in number).
CorrectIncorrect - Question 3 of 20
3. Question
Match the following:
Sort elements
- I/O lines, lower order address and data lines
- I/O lines
- I/O lines, higher order address lines
- I/O lines, input lines for peripherals
- Port 0
- Port 1
- Port 2
- Port 3
CorrectIncorrect - Question 4 of 20
4. Question
Which among the below mentioned functions does not belong to the category of alternate functions usually performed by Port 3 (Pins 10-17) ?
CorrectIncorrect - Question 5 of 20
5. Question
Which pin provides a reset option in 8051?
CorrectIncorrect - Question 6 of 20
6. Question
External access is used to permit ____
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7. Question
Which pin of Port 3 has an alternative function as write control signal for external data memory?
CorrectIncorrect - Question 8 of 20
8. Question
Match the pins with its alternative function:
Sort elements
- Serial Data Output
- External Interrupt 1
- External Timer 1 Input
- External Memory Read
- P3.1
- P3.3
- P3.5
- P3.7
CorrectIncorrect - Question 9 of 20
9. Question
If the __ pin is ___ then we have the option of using the ____ ROM or EPROM together with _____ memory and devices.
CorrectIncorrect - Question 10 of 20
10. Question
Port 0 acts as GPIO when _____ connected externally.
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11. Question
Select the correct answers with respect to ALE.
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12. Question
The port which doesn’t serve any alternative function is ____
CorrectIncorrect - Question 13 of 20
13. Question
What should be done to access the program from external program memory?
CorrectIncorrect - Question 14 of 20
14. Question
On chip peripherals of 8051 are connected to _____
CorrectIncorrect - Question 15 of 20
15. Question
Pins ___ and ___ are used for connecting external oscillator.
CorrectIncorrect - Question 16 of 20
16. Question
Which pin acts as program pulse input during flash programming?
CorrectIncorrect - Question 17 of 20
17. Question
Expand Vpp
CorrectIncorrect - Question 18 of 20
18. Question
When external memory is accessed which are the ports acts as address lines?
CorrectIncorrect - Question 19 of 20
19. Question
All the ports of 8051 have bidirectional input/output lines.
CorrectIncorrect - Question 20 of 20
20. Question
Pins which provide power supply are _____
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