Introduction - Freescale Semiconductor MCF5329 Reference Manual

Chapter 26
Pulse-Width Modulation (PWM) Module
26.1

Introduction

This chapter describes the configuration and operation of the pulse-width modulation (PWM) module. It
includes a block diagram, programming model, and functional description.
26.1.1 Overview
The PWM module, shown in
period and duty cycle. With a suitable low-pass filter, the PWM can be used as a digital-to-analog
converter.
Internal Bus
Clock (f )
sys/3
Freescale Semiconductor
Figure 26-1, generates a synchronous series of pulses having programmable
PWM Clocks
Clock select
Control
Enable
Polarity
Alignment
Figure 26-1. PWM Block Diagram
MCF5329 Reference Manual, Rev 3
PWM Channels
Channel 7
Period and Duty Counter
Channel 6
Period and Duty Counter
Channel 5
Period and Duty Counter
Channel 4
Period and Duty Counter
Channel 3
Period and Duty Counter
Channel 2
Period and Duty Counter
Channel 1
Period and Duty Counter
Channel 0
Period and Duty Counter
PWMOUT7
PWMOUT5
PWMOUT3
PWMOUT1
26-1