Microcontrollers and Applications - May 2014

Electronics & Telecomm. (Semester 5)

TOTAL MARKS: 80
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks. 1 (b) Explain SIM instruction of 8085(5 marks) 1 (c) Explain TCON register of 8051(5 marks) 1 (d) Compare features of 89C51, 89C53, 89C2051, 89C2052(5 marks)

1(a) State features of ARM controller.(5 marks) 2 (a) Design 8085 based system with following specifications
(a) CPU working at 6 MHz
(b) 16KB EPROM using 8K device
(c) 8KB SRAM using 4K device.(10 marks) 2 (b) Write assembly language program for 8085 to move a block of stored at location 2100 to location 3100(10 marks) 3 (a) Explain ICW's and OCE's of PIC 8259(10 marks) 3 (b) Explain strobe j input output mode of PPI 8255(10 marks) 4 (a) Draw and explain internal memory organization of 8051(10 marks) 4 (b) Explain 8253 control word format and set up the 8253 as square wave generator with 1 ms period if input frequency to 8253 is 1 MHz(10 marks) 5 (a) Explain addressing modes of ARM controller (10 marks) 5 (b) Given an arrary of 10 numbers, write assembly language program for 8051 to find smallest amongst the ten numbers stored from memory location 3000(10 marks) 6 (a) Draw and explain timming diagram of following 8085 instruction
(a) MVI M,25H
(b) LDA 3200(10 marks) 6 (b) Draw and explain internal structure of Port-1 and Port-3 of 8051(10 marks) 7 (a) Write a program to display message on an 8-bit 7-segment LED display that is interfaced thrugh Port-1 and Port-3 of 8051(10 marks) 7 (b) Draw and explain interrupt structure of 8085 (10 marks)