z8fmc16100 ZiLOG Semiconductor, z8fmc16100 Datasheet - Page 80

• Manufacturer Part Number: z8fmc16100
• Description: Z8 Encore Motor Control Flash Mcus
• Manufacturer: ZiLOG Semiconductor

PS024611-0408
PWM Prescaler
PWM Period and Count Resolution
The prescaler allows the PWM clock signal to be decreased by factors of 1, 2, 4, or 8 with
respect to the system clock. The
(PWMCTL1) controls prescaler operation. This 2-bit
prescale value only changes upon a PWM reload event.
The PWM counter operates in two modes to allow edge-aligned outputs and center-
aligned outputs.
puts. The period of the PWM outputs (PERIOD) is determined by which mode the PWM
counter is operating. The active time of a PWM output is determined by the
programmed duty cycle (PWMDC) and the programmed deadband time (PWMDB).
The sections that follows these two figures describe the PWM timer modes and the
registers that control the duty cycle and deadband time.
Deadband Insertion
No Deadband
PWMHx
PWMHx
PWMLx
PWMLx
Figure 8
Figure 8. Edge-Aligned PWM Output
and
Figure 9
PWMDB
PWMDC
PRES[1:0]
display edge-aligned and center-aligned PWM out-
bit field in the PWM Control 1 register
PRES
PWMDB
field is buffered so that the
Product Specification
Period
PWM Prescaler
68