HT45RM03 datasheet(25/54 Pages) HOLTEK

25 / 54 page

The bits 7~6 of the PWM control register (PWMC) can be used to define the PWM Complementary output dead time.

PWMDT1

PWMDT0

To Define the PWM Complementary Output Dead Time

Dead Time=fSYS/2

Dead Time=fSYS/4

Dead Time=fSYS/8

Dead Time=fSYS/16

PWMDT1

PWMDT0

fSYS=4MHz

fSYS=8MHz

fSYS=12MHz

Unit

0.50

0.25

0.17

1.00

0.50

0.33

2.00

1.00

0.67

4.00

2.00

1.33

Dead Time Setting (fSYS is 4, 8, 12MHz)

PWM Options

There are two options to define the PWM and PWM Complementary output level. These two bits can be read by soft-

ware.

Options

Description

PWM output level selection;

PWMLEV.

This option is to determine the PWM output level. Active Low or Active High

selection. Disable this bit to

²0², the PWM output will be defined as an active

high output, Enable this bit to

²1², the PWM output will be defined as an ac-

tive low output. If the PWM function disable, this bit is invalid.

PWM Complementary output level

selection; PWMCLEV.

This option is to determine the PWM Complementary output level. Active low

or active high selection. Disable this bit to

²0², the PWM Complementary out-

put will be defined as an active high output, Enable this bit to

²1², the PWM

Complementary output will be defined as an active low output. If the PWM

Complementary function disable, this bit is invalid.

HT45RM03

Rev. 1.10

February 16, 2007

P W M

P W M P e r i o d I n t e r r u p t

P W M

P W M O u t p u t

P W M C T R L , P C 7 ,

P C 6 , P W M L E V

P W M C o m p l e m e n t a r y O u t p u t

P W M C T R L , P C 7 ,

P C 6 , P W M C L E V

P C 0 / P W M 0

P C 2 / P W M 1

P C 4 / P W M 2

P C 1 / P W M 0

P C 3 / P W M 1

P C 5 / P W M 2

P W M D e a d T i m e C o n t r o l

P W M H

P W M L

P W M E N

P W M C E N

PWM

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