mcf5272 Freescale Semiconductor, Inc, mcf5272 Datasheet - Page 409

• Manufacturer Part Number: mcf5272
• Description: Mcf5272 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

Chapter 18
Pulse Width Modulation (PWM) Module
This chapter describes the configuration and operation of the pulse width modulation
(PWM) module. It includes a block diagram, programming model, and timing diagram.
18.1 Overview
The PWM module shown in Figure 18-1, generates a synchronous series of pulses having
programmable duty cycle. With a suitable low-pass filter, the PWM can be used as a
digital-to-analog converter.
SYS CLOCK
PWCR[CKSL]
PRESCALER
EN
COUNTER
FRC1
PWM_OUT0
COMPARATOR
GENERATOR
PWM_OUT1
PWM_OUT2
WIDTH BUFFER
Figure 18-1. PWM Block Diagram (3 Identical Modules)
MOTOROLA
Chapter 18. Pulse Width Modulation (PWM) Module
18-1