Feature Of 8051

Question 1

What is the data width of the 8051 microcontroller?

Answer 1

8-bit

Question 2

How many serial ports does the 8051 microcontroller have?

Answer 2

One

Question 3

How many I/O ports does the 8051 microcontroller have?

Answer 3

Four

Question 4

What is the bit width of each I/O port on the 8051?

Answer 4

8 bits

Question 5

How many timers/counters are included in the 8051 microcontroller?

Answer 5

2

Question 6

What is the on-chip ROM size of the 8051 microcontroller?

Answer 6

4K bytes

Question 7

What is the size of the on-chip RAM in the 8051 microcontroller?

Answer 7

128 bytes

Question 8

What is the number of pins in the 8051 IC?

Answer 8

40 pins

Question 9

What is the required power supply voltage for the 8051?

Answer 9

5V

Question 10

How many register banks does the 8051 have?

Answer 10

4 register banks

Question 11

How many interrupt sources are available in the 8051?

Answer 11

Six interrupt sources

Question 12

What type of data bus does the 8051 utilize?

Answer 12

8-bit bidirectional data bus

Question 13

What type of address bus does the 8051 have?

Answer 13

16-bit unidirectional address bus

Question 14

How many user-defined flags does the 8051 support?

Answer 14

128 user-defined flags

Question 15

What are the specifications of the stack pointer and program counter in the 8051?

Answer 15

8-bit Stack pointer and 16-bit program counter