SPAKMC331MFC20 View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

Manufacturer

SPAKMC331MFC20

highly-integrated 32-bit microcontroller, 16MHz

Motorola => Freescale 

16-BIT DATA BUS

PWMA REGISTER

PWMB REGISTER

7

PWMBUFA REGISTER PWMBUFB REGISTER

PWMA

PIN

F1A

BIT

R

LATCH

S

ZERO DETECTOR

COMPARATOR A

COMPARATOR B

R

LATCH

S

ZERO DETECTOR

PWMB

PIN

F1B

BIT

SFA

BIT

MULTIPLEXER A

MULTIPLEXER B

SFB

BIT

16-BIT COUNTER

16-BIT TIMER BUS

FROM

PRESCALER

16/32 PWM BLOCK

Figure 7-6 PWM Block Diagram

7.11.1 PWM Counter

The 16-bit counter in the PWM unit is similar to the timer counter in the capture/com-

pare unit. During reset, the GPT is configured to use the system clock divided by two

to drive the counter. Initialization software can reconfigure the counter to use one of

seven prescaler outputs or an external clock input from the PCLK pin.

MOTOROLA

7-16

GENERAL-PURPOSE TIMER

MC68331

USER’S MANUAL

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