HT86B30 datasheet(54/83 Pages) HOLTEK

54 / 83 page

HT86BXX/HT86BRXX

Rev. 1.70

February 22, 2010

Example: Read an 8-bit voice ROM data which is located at address 000007H by address latch 0

Set

[26H].2

; Enable voice ROM circuit

mov

A, 07H

;

mov

LATCH0L, A

; Set LATCH0L to 07H

mov

A, 00H

;

mov

LATCH0M, A

; Set LATCH0M to 00H

mov

A, 00H

;

mov

LATCH0H, A

; Set LATCH0H to 00H

call

Delay

; Delay a short period of time

mov

A, LATCHD

; Get voice data at 000007H

Pulse Width Modulation Output

All device include a single 12-bit PWM function. The

PWM output is provided on two complimentary outputs

on the PWM1 and PWM2 pins. These two pins can di-

rectly drive a piezo buzzer or an 8 ohm speaker without

requiring any external components. The PWM1 output

can also be used alone to drive a piezo buzzer or an 8

ohm speaker without requiring external components.

When the single PWM1 output is chosen, which is

achieved by setting the Single_PWM bit in the PWMC

The PWM output will initially be at a low level, and if

stopped will also return to a low level. If the PWMCC bit

changes from low to high then the PWM function will

start and latch new data. If the data is not updated then

the old value will remain. If the PWMCC bit changes

from high to low, at the end of the duty cycle, the PWM

output will stop.

P W M C R e g i s t e r

b 0

P W M C C

S i n g l e _ P W M

b 7

N o t i m p l e m e n t e d , r e a d a s z e r o

P W M E n a b l e

1 : e n a b l e

0 : d i s a b l e

S i n g l e P W M O u t p u t

1 : s i n g l e o u t p u t

0 : d u a l o u t p u t s

N o t i m p l e m e n t e d , r e a d a s z e r o

Pulse Width Modulator Control Register

P W M L R e g i s t e r

b 7

b 0

N o t u s e d , r e a d a s " 0 "

P 3

P 2

P 1

P 0

P W M o u t p u t

P u l s e W i d t h M o d u l a t o r D a t a L o w R e g i s t e r

P W M H R e g i s t e r

b 7

b 0

P 1 1 P 1 0

P 9

P 8

P W M o u t p u t

P u l s e W i d t h M o d u l a t o r D a t a H i g h R e g i s t e r

P 7

P 6

P 5

P 4

S p e a k e r

P W M 1

P W M 2

0 . 0 1 m F *

" * " F o r r e d u c i n g t h e d i g i t a l n o i s e t h a t P W M m a y

c a u s e , c a n c o n s i d e r i n c r e m e n t c a p a c i t o r s .

N o t e :

b 7

b 0

V O L R e g i s t e r

N o t u s e d , r e a d a s " 0 "

P W M v o l u m e c o n t r o l d a t a

V O L 3

V O L 4

V O L 5

V O L 6

U s e d b y D A o u t p u t

V O L 6

V O L 5

V O L 4

V O L 3

P W M v o l u m e l e v e l 1 f o r t h e m i n i m u m v o l u m e

P W M v o l u m e l e v e l 2

P W M v o l u m e l e v e l 3

P W M v o l u m e l e v e l 4

P W M v o l u m e l e v e l 5

P W M v o l u m e l e v e l 6

P W M v o l u m e l e v e l 7

P W M v o l u m e l e v e l 8 f o r t h e m a x i m u m v o l u m e

Volume Control Register

HT86B30 データシート(PDF) 54 Page - Holtek Semiconductor Inc

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