a) What are the pin numbers of, i) XTAL1 and ii) XTAL2 of the 8051 microcontrollers?...

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a) What are the pin numbers of, i) XTAL1 and ii) XTAL2 of the 8051 microcontrollers? State the function of these two pins. (3 Marks) b) State the bit size (8-bit or 16-bits) for the following Registers from i) to v) for the 8051 Microcontrollers. (5 Marks) i) Data pointer (1 Mark) ii) Timer Mode Register (1 Mark) iii) Program Status Word (1 Mark) iv) Timer 1 Low Byte (1 Mark) v) Program Counter (1 Mark) c) Demonstrate the calculation with results (hexadecimal and binary formats) and show the status of the CY, AC and P flag after the addition of 55H and 6FH in the following instructions. (5 Marks) MOV A, #55H ADD A, #6FH d) Find the period of the machine cycle to execute an instruction "DIV AB" for the 8051 microcontroller systems if the crystal frequency is 16MHZ. (2 Marks) e) Give the addressing modes of the following instructions from i) to v). (5 Marks) i) MOVX A, @DPTR ii) iii) iv) MOV A, #20H MOV A, R3 MOVC B, @A + PC MOV A, 20H v) a) What are the pin numbers of, i) XTAL1 and ii) XTAL2 of the 8051 microcontrollers? State the function of these two pins. (3 Marks) b) State the bit size (8-bit or 16-bits) for the following Registers from i) to v) for the 8051 Microcontrollers. (5 Marks) i) Data pointer (1 Mark) ii) Timer Mode Register (1 Mark) iii) Program Status Word (1 Mark) iv) Timer 1 Low Byte (1 Mark) v) Program Counter (1 Mark) c) Demonstrate the calculation with results (hexadecimal and binary formats) and show the status of the CY, AC and P flag after the addition of 55H and 6FH in the following instructions. (5 Marks) MOV A, #55H ADD A, #6FH d) Find the period of the machine cycle to execute an instruction "DIV AB" for the 8051 microcontroller systems if the crystal frequency is 16MHZ. (2 Marks) e) Give the addressing modes of the following instructions from i) to v). (5 Marks) i) MOVX A, @DPTR ii) iii) iv) MOV A, #20H MOV A, R3 MOVC B, @A + PC MOV A, 20H v)

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a XTAL1 has pin number 19 XTAL2 has pin number 18 XTAL1 and XTAL2 These are two pins f... View the full answer