mc68hc708mp16 Freescale Semiconductor, Inc, mc68hc708mp16 Datasheet - Page 136

• Manufacturer Part Number: mc68hc708mp16
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Pulse Width Modulator for Motor Control (PWMMC)
Technical Data
136
For edge-aligned mode, a 12-bit up-only counter is used to create the
PWM period. Therefore, the PWM resolution in edge-aligned mode is
one clock (highest resolution is125 ns @ f
Figure
maximum count. The PWM period will equal: [(timer modulus) x (PWM
clock period)].
Center-aligned operation versus edge-aligned operation is determined
by the option EDGE. See
Pulse Width Modulator for Motor Control (PWMMC)
9-4. Again, the timer modulus register is used to determine the
Figure 9-4. Edge-Aligned PWM (Positive Polarity)
UP-ONLY COUNTER
MODULUS = 4
PWM = 0
PWM = 1
PWM = 2
PWM = 3
PWM = 4
5.3 Functional
PERIOD = 4 x (PWM
CLOCK PERIOD)
Description.
op
= 8 MHz) as shown in
MC68HC708MP16
Freescale Semiconductor
—
Rev. 3.1