HT46R92 datasheet(25/61 Pages) HOLTEK

25 / 61 page

HT46R92

Rev. 1.10

November 5, 2008

P W M 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

7+1 Pulse Width Modulation Mode Register

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 m o d u l a t i o n p e r i o d : 1 2 8 / f S Y S

5 0 / 1 2 8

5 1 / 1 2 8

5 2 / 1 2 8

5 0 / 1 2 8

5 1 / 1 2 8

5 0 / 1 2 8

5 1 / 1 2 8

5 2 / 1 2 8

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

P W M c y c l e : 2 5 6 / 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 0

7+1 PWM Mode

PWM1 output pin is setup as an output. After these two

initial steps have been carried out, and of course after

the required PWM value has been written into the

PWM0 or PWM1 register, writing a

²1² to the corre-

sponding PA.4 or PA.5 bit in the PA output data register

will enable the PWM data to appear on the pin. Writing a

²0² to the bit will disable the PWM output function and

force the output low. In this way, the Port A data output

control for the PWM function. Note that if the configura-

tion options have selected the PWM function, but a

²1²

has been written to its corresponding bit in the PAC con-

trol register to configure the pin as an input, then the pin

can still function as a normal input line, with pull-high re-

sistor options.

PWM Programming Example

The following sample program shows how the PWM

outputs are setup and controlled. Before use the corre-

sponding PWM output configuration options must first

be selected.

mov a,64h

; setup PWM0 value of 100 decimal which is 64H

mov pwm0,a

clr pac.4

; setup pin PA4 as an output

set pa.4

; pa.4=1; enable the PWM output

clr pa.4

; disable the PWM output

- PA4 will remain low

HT46R92 Datasheet(PDF) 25 Page - Holtek Semiconductor Inc

HT46R92 Datasheet(HTML) 25 Page - Holtek Semiconductor Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61

Datasheet Download

Link URL