UNIVERSITY OF MADRAS
B.Sc. DEGREE COURSE IN ELECTRONICS SCIENCE
SEMESTER SYSTEM WITH CREDITS
(Effective from the Academic Year 2003-2004)

Semester V - Paper XIII - Microprocessor-II

Duration: 3 hrs
Maximum Marks: 100
Credits: 4

Unit-1

I/O interface-IN and OUT instructions-Timing diagrams for IN and OUT instructions Interfacing an input port - interfacing an output port using I/O mapped I/O technique - Difference between I/O mapped I/O and memory mapped I/O.

Unit-2

Interrupts-Hardware and software interrupts-SIM and Mlvi instructions-Interrupt priorities-Interrupt controlled data transfer. Difference between polled I/O and Interrupt controlled I/O data transfer

Unit-3

Interfacing peripheral devices-Programmable Peripheral Interface 8155 and 8255- Internal architecture, control register and control word - programming with the above devices-Interfacing LED's, flashing LEDs, 7-segment display-Multiplexing of 7- segment display-Interfacing D/A converter and waveform generation-Interfacing A/D converters.

Unit-4

Interfacing Hex keyboard using 8255-Keyboard and Display interface 8279 internal architecture and working-Programmable interval Timer 8253/54, internal architecture and different modes of operation- uses of timer.

Unit-5

Microprocessor applications-Stepper motor interface-Temperature controller-Data acquisition system- A simple traffic light controller.

Books for study and reference: