week_3_quiz - 1(TCO 3 Free-running TCNT TOF(timer overflow...

Info icon This preview shows pages 1–2. Sign up to view the full content.

1. (TCO 3) Free-running TCNT TOF (timer overflow flag) goes high when it makes a transition from (Points : 5) FF to 00. 0000 to FFFF. FFFF to 0000. 3FFF to 0000. Question 2. 2. (TCO 3) Capturing the time of the rising edge of a signal followed by capturing the falling edge of a signal, which statement is correct? (Points : 5) The frequency of the signal can be determined. The duty cycle of the signal can be calculated. The period of the signal can be calculated. The pulse width of the signal can be determined. Question 3. 3. (TCO 3) The operation of combining two independent 9S12G128 8-bit PWM counters as a single 16-bit counter is called which of the following?
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: (Points : 5) Concatenation Combination Concurrency Connectivity Question 4. 4. (TCO 3) A PWM is to be programmed to output a signal with a pulse high width of 150 usec and a pulse low width of 250 usec. What are the values required for prescale (if any) PWMPER and PWMDTY? An 8-bit configuration is used and the E-clock is 24 MHz. (Points : 10) Total time of cycle=150+250=400 usec Hence total number of counts minimum required=(400*10^-6)/(1/24*10^(-8))=9600 1198009323 MultipleChoice 4 1198009324 MultipleChoice 12 1198009325 MultipleChoice 15 However maximum count possible =2^8=256 Since 9600/256=37.5 Thus value of PRESCALER required=64...
View Full Document

  • Spring '12
  • Pulse-width modulation, usec, 8-bit PWM counters, timer overflow flag, Free-running TCNT TOF

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern