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ECET 340 potential Instructors / tutorialrank
ECET 340 Week 1 HomeWork 1
ECET 340 Entire Course (DEVRY)
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
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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
signals destination must match the capabilities
of the signals source, name some of the
electrical signal parameters that must be
considered when designing an interface between
two different hardware components. (2 points)
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ECET 340 potential Instructors / tutorialrank
ECET 340 Week 2 HomeWork 2
ECET 340 Week 1 iLab 1
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 4. Before
exiting an ISR, the programmer should use which
command? 2 points 5. In which one of the
following sequences is the stack pulled by rti?
3 points
To become familiar with Microcontroller MC9S12
parallel ports and how simple input and output
devices are interfaced through them. To learn how
to program I/O instructions in C language. To
learn how to organize a program to read data from
input ports, process the data, and display the
result on a simple output device.  
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ECET 340 potential Instructors / tutorialrank
ECET 340 Week 2 iLab 2
ECET 340 Week 3 HomeWork 3
ECET 340 Week 2 iLab 2
ECET 340 Week 3 HomeWork 3
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ECET 340 potential Instructors / tutorialrank
ECET 340 Week 3 iLab 3
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?4. Given an 24 MHz bus speed. Write
down the line(s) of instruction which set the
ATD1 unit for 2MHz conversion frequency, 10-bit
resolution and 8 A-to-D clocks per sample time.
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. To learn how to
program a keypad activated interrupt that
identifies the key being pressed and displays or
otherwise returns its value to the main program.
 
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ECET 340 potential Instructors / tutorialrank
ECET 340 Week 4 iLab 4
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 11103. Find the number
of discrete voltages output by a 12-bit DAC. Show
work.4. Use the internet to locate the data
sheet for an MC1408 DAC. From it find, for the
MC1408-7 version, the following a. The settling
time b. Accuracy at full scale output current
(1.99 mA), 25ºC
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. To become more
proficient in programming displays for real-time
operation
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ECET 340 potential Instructors / tutorialrank
ECET 340 Week 5 iLab 5
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?3. What is
the maximum time possible before the free-running
counter overflows when the e MHz?4. Two input
capture events occur at 0x1037 and 0x002A. If the
prescaler bits PR210 are set to 101 and the e
clock is 24 MHz, how much time as transpired
between the two events?
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. Deliverables For
this lab, the deliverables include the cover
sheet, filled-in sections of the lab report,
photographs (online), or instructor sign-offs
(onsite), and answers to the questions. The cover
sheet must be completed in typed format.
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ECET 340 potential Instructors / tutorialrank
ECET 340 Week 7 HomeWork 7
ECET 340 Week 7 iLab 7
ECET 340 Week 7 iLab 7
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 4. How is stepper motor speed
controlled? State any two ways a program can do
this. 2 points
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ECET 340 potential Instructors / tutorialrank
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