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lab two - UNIVERSITY OF CONNECTICUT ECE 3411 Microprocessor...

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UNIVERSITY OF CONNECTICUT Fall 2011 ECE 3411: Microprocessor Application Laboratory Lab 2- Sep 19 th , Due by Sep 26. 1 Lab 2: Timer/Counter and Interrupt 1. Objective The objective of this laboratory is to learn to use different timers/counters in ATmega644 microcontroller and the various interrupt requests. In this experiment, you will do the following: Understand the operating modes of the ATmega 644 timing system Use the different aboard timers for generating delay and/or time-critical output signals Properly configure and program interrupt events for the ATmega644 Explore both external interrupt requests and internal interrupt requests 2. Pins of ATmega644: 3. Reading (it is better to read the assigned readings before each lab) Chapter 5 (Interrupt Subsystem, pp. 107-119) and Chapter 6 (Timing Subsystem, pp. 137-161) of “Embedded Systems Design with the A tmel AVR Microcontroller I/II” Chapter 10, 11, 13, 14 of ATmega644’s datasheet Lecture slides 4. Sample code for using the timer/counter0:
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