HT46R46E datasheet(31/73 Pages) HOLTEK

31 / 73 page

HT46R46E/C46E/R47E/C47E/R48AE/C48AE/R49E

Rev. 1.20

August 15, 2007

PWM Programming Example

The following sample program shows how the PWM outputs are setup and controlled. Before use the corresponding

PWM output configuration options must first be selected.

mov a,64h

; setup PWM value of 100 decimal which is 64H

mov pwm,a

clr pdc.0

; setup pin PD0 as an output

set pd.0

; PD.0=1; enable the PWM output

clr pd.0

; disable the PWM output

- PD0 will remain low

f S Y S / 2

P W M

[ P W M ] = 1 0 0

[ P W M ] = 1 0 1

P W M

[ P W M ] = 1 0 2

P W M

[ P W M ] = 1 0 3

P W M

P W M c y c l e : 2 5 6 / f S Y S

2 5 / 6 4

2 6 / 6 4

2 5 / 6 4

2 6 / 6 4

2 5 / 6 4

2 6 / 6 4

2 5 / 6 4

2 6 / 6 4

M o d u l a t i o n c y c l e 0

P W M m o d u l a t i o n p e r i o d : 6 4 / f S Y S

M o d u l a t i o n c y c l e 1

M o d u l a t i o n c y c l e 2

M o d u l a t i o n c y c l e 3

M o d u l a t i o n c y c l e 0

6+2 PWM Mode

P W M , P W M 0 , P W M 1 R e g i s t e r

b 7

b 0

A C v a l u e

D C v a l u e

Pulse Width Modulation Registers

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