How many 16-bit PWM channels are available in the Freescale 9S12DG256 microcontroller?
How many 16-bit PWM channels are available in the Freescale 9S12DG256 microcontroller?
Two
Four
Seven
Eight
2. Question : (TCO #6) When concatenating the two 8-bit PWM Channels 3 and 2 to get a 16-bit PWM channel, _____ becomes the low-order byte.
Channel 7
Channel 2
Channel 5
Channel 3
3. Question : (TCO #6) To enable Channel 7 of the PWM to 9S12DG256, which of the following must be done?
Set PWME7 = 1
Set PWME7 = 0
Set CAE7 = 1
Set CAE7 = 0
4. Question : (TCO #6) What is Clock SA when PWMSCLA = 0×01 and Clock A = 4MHz?
5MHz
4MHz
8MHz
2MHz
5. Question : (TCO #6) What is Clock SA when PWMSCLA = 0×00 and Clock A = 8MHz?
8MHz
15625Hz
8MHz
31250Hz
6. Question : (TCO #6) A bus clock is set to 4000 kHz. What is the Clock A’s value if PWMPRCLK = 0×02?
1MHz
3MHz
2MHz
8MHz
7. Question : (TCO #6) In case of center-aligned PWM, which formula can be used for the duty cycle of the output waveform?
Duty Cycle = [(PWMPERx – PWMDTYx) / PWMPERx] * 100%
Duty Cycle = [PWMDTYx / PWMPERx] * 100%
Duty Cycle = PWMDTYx 100%
Both A or B (depends on PPOLx)
8. Question : (TCO #6) In case of center-aligned PWM, which formula can be used for the PWM frequency?
PWMx frequency = Clock (A, B, SA, or SB) / PWMPERx
PWMx frequency = Clock (A, B, SA, or SB) / (2 * PWMPERx)
PWMx frequency = Clock (A, B, SA, or SB) / (4 * PWMPERx)
PWMx frequency = Clock (A, B, SA, or SB) / (3 * PWMPERx)
9. Question : (TCO #6) Current passing through a wire creates an electromagnetic field that _____.
loops around the wire
is directly proportional to the amount of the current flowing inside the wire
is strongest closer to the wire
satisfies all of the above answers
10. Question : (TCO #6) PWM channels of a microcontroller are designed for control of a _____.
servo motor
AC motor
stepper motor
None of the above
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