ECET 340 CART Education Expert/ecet340cartdotcom

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2. ECET 340 Entire Course • ECET 340 Week 1 HomeWork 1 • ECET 340 Week 1 iLab 1 • ECET 340 Week 2 HomeWork 2 • ECET 340 Week 2 iLab 2 • ECET 340 Week 3 HomeWork 3 • ECET 340 Week 3 iLab 3 • ECET 340 Week 4 HomeWork 4 • ECET 340 Week 4 iLab 4 • ECET 340 Week 5 HomeWork 5

3. ECET 340 Week 1 HomeWork 1 • 1. Give three examples each of internal and external peripheral devices as referenced to the HCS12 microcontroller and not an entire PC. (2 points) • 2. Given “the requirements of each signal’s destination must match the capabilities of the signal’s source,”

4. ECET 340 Week 2 HomeWork 2 • 1. Where does program control transfer to when an interrupt occurs? +2 points • 2. Which one of the following Interrupts has highest priority? +2 points • 3. RAM Vector table addresses $3E52 belongs to which interrupt? +2 points

5. ECET 340 Week 2 iLab 2 • ECET 340 Week 2 iLab 2

6. ECET 340 Week 3 HomeWork 3 • 1. Sketch a circuit that can be used to debounce a pushbutton and explain how it works. (4 points max) • 2. In Figure 7.32 on page 339 of the Huang textbook, if the row has and the columnsare , which key is pressed? (2 points max)

7. ECET 340 Week 3 iLab 3 • SOLVED ECET 340 iLAB3 • OBJECTIVES: • To learn the basic operation of a keypad. • To understand how to interface a keypad to a microprocessor. • To learn how to program a keypad driver in C language.

8. ECET 340 Week 4 HomeWork 4 • 1. Determine the conversion time for an ADC0804 (8-bit), where 66 clocks per bit are required, if its clock frequency is 50 kHz. • 2. If an 8-bit SAR has Vref = 10 V, what is the binary value for an input voltage of 7.28 V? • 3. What is the percent error for the binary answer found in Problem #2?

9. ECET 340 Week 4 iLab 4 • I. OBJECTIVES: • To learn how to use A-to-D converters to digitize signals from analog input devices. • To learn how to write a C language program that samples the data from an analog device, digitizes it and formats it for output on an LCD.

10. ECET 340 Week 5 HomeWork 5 • 1. Explain, briefly, why an analog restoring filter is sometimes used at the output of a DAC. • 2. Given Iref = 2 mA for a DAC1408 IC, find Iout for the input 1110 1110 • 3. Find the number of discrete voltages output by a 12-bit DAC. Show work.

11. ECET 340 Week 5 iLab 5 • Scenario/Summary • This week's lab covers two areas, conversion of digital HCS12 • signals to an analog format, and the use of a Serial Peripheral Interface (SPI) • to transfer data, and commands between the HCS12, and the DAC • peripheral.

12. ECET 340 Week 6 HomeWork 6 • 1. What are the four main functions of the HC12 Timer unit? • 2. Two input capture events occur at counts 0x1037 and 0xFF20 of the free-running counter. How many counts (in decimal) have transpired between these two events?

13. ECET 340 Week 6 iLab 6 • ECET 340 Week 6 iLab 6

14. ECET 340 Week 7 HomeWork 7 • 1. The movable part of the solenoid is the: +2 points • 2. Why is the 6N139 optoisolator used in the interfaces to devices such as large motors? +2 points • 3. Calculate the number of steps per revolution for a stepper motor with a step angle of 7.5°. +2 points

15. ECET 340 Week 7 iLab 7 • ECET 340 Week 7 iLab 7

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