HT45R06 datasheet(17/41 Pages) HOLTEK

17 / 41 page

HT45R06

Rev. 1.00

May 24, 2005

Bit No.

Label

Function

ACS0

ACS1

ACS2

ACS2, ACS1, ACS0: Select A/D channel

0, 0, 0: AN0

0, 0, 1: AN1

0, 1, 0: AN2

0, 1, 1: AN3

1, X, X: undefined, cannot be used

PCR0

PCR1

PCR2

PCR2, PCR1, PCR0: PB3~PB0 configurations

0, 0, 0: PB3 PB2 PB1 PB0 (The ADC circuit is power off to reduce power consumption.)

0, 0, 1: PB3 PB2 PB1 AN0

0, 1, 0: PB3 PB2 AN1 AN0

0, 1, 1: PB3 AN2 AN1 AN0

1, x, x: AN3 AN2 AN1 AN0

EOCB

End of A/D conversion flag.

(0: end of A/D conversion)

START

Start the A/D conversion

®1®0= Start

®1= Reset A/D converter and set EOCB to ²1²

ADCR (22H) Register

When the A/D conversion is completed, the A/D interrupt request flag is set. The EOCB bit is set to

²1² when the START

bit is set from

²0² to ²1².

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Note:

D0~D7 is A/D conversion result data bit LSB~MSB.

ADR (21H) Register

7 6 t A D

A / D c o n v e r s i o n t i m e

7 6 t A D

A / D c o n v e r s i o n t i m e

0 0 0 B

1 0 0 B

0 1 0 B

0 0 0 B

S T A R T

E O C B

P C R 2 ~ P C R 0

A C S 2 ~ A C S 0

P o w e r - o n

R e s e t

E n d o f A / D

c o n v e r s i o n

1 : D e f i n e P B c o n f i g u r a t i o n

2 : S e l e c t a n a l o g c h a n n e l

1 . P B p o r t s e t u p a s I / O s

2 . A / D c o n v e r t e r i s p o w e r e d o f f

t o r e d u c e p o w e r c o n s u m p t i o n

A / D c l o c k m u s t b e f S Y S / 2 , f S Y S / 8 o r f S Y S / 3 2

N o t e :

S t a r t o f A / D

c o n v e r s i o n

R e s e t A / D

c o n v e r t e r

1 0 0 B

0 0 0 B

S t a r t o f A / D

c o n v e r s i o n

R e s e t A / D

c o n v e r t e r

A / D s a m p l i n g t i m e

3 2 t A D

M i n i m u m o n e i n s t r u c t i o n c y c l e n e e d e d

d o n ' t c a r e

A / D s a m p l i n g t i m e

3 2 t A D

E n d o f A / D

c o n v e r s i o n

A/D Conversion Timing

HT45R06 Datasheet(PDF) 17 Page - Holtek Semiconductor Inc

HT45R06 Datasheet(HTML) 17 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

Datasheet Download

Link URL