HT56R656 datasheet(85/108 Pages) HOLTEK

85 / 108 page

HT56R62/HT56R65

HT56R642/HT56R644/HT56R654/HT56R656

Rev. 1.00

July 20, 2009

N o r m a l M o d e

w a

k e -

u p

H A

L T

& "

I D L

E N

" =

H A L

T &

" I D L

E N "

= 1

w a k

e - u p

w a

k e -

u p

H A

L T

& "

I D L

E N

" =

H A L

T &

" I D L

E N "

= 0

w a k

e - u p

" * " D e p e n d s t h e W D T e n a b l e / d i s a b l e c o n d i t i o n .

" # " E i t h e r t h e 3 2 7 6 8 H z o r 3 2 K _ I N T m u s t b e O N .

f M O n ,

3 2 7 6 8 H z o r 3 2 K _ I N T O n ,

f S Y S = f M

S l e e p M o d e

f M O f f ,

3 2 7 6 8 H z o r 3 2 K _ I N T O n * ,

f S Y S = O f f

I d l e M o d e

f M O f f ,

3 2 7 6 8 H z o r 3 2 K _ I N T O n ,

f S Y S = O f f

S l o w M o d e

f M O n / O f f ,

3 2 7 6 8 H z o r 3 2 K _ I N T O n ,

f S Y S = f M / 2 ~ f M / 6 4

o r 3 2 7 6 8 H z o r 3 2 K _ I N T

Dual Clock Mode Operation

M U X

f S L O W

H L C L K B i t

f S Y S

f M

M U X

f R T C

f S L

S l o w

C l o c k

C o n t r o l

R T C

3 2 7 6 8 H z

f R C 3 2 K

C o n f i g u r a t i o n

O p t i o n

f M / 2 , . . . f M / 6 4 , f S L

M U X

f S

f S Y S / 4

f S U B

f S Y S / 4

f S U B

T i m e r 1

T 1 S

f S C l o c k S e l e c t

C o n f i g u r a t i o n O p t i o n

f S U B

¸ 8

f L C D

= f S U B / 8

L C D

R T C i n t e r r u p t ,

T i m e B a s e i n t e r r u p t ,

B u z z e r , W D T

I n t e r n a l

3 2 K _ I N T

L o w O s c i l l a t o r

O S C 3

O S C 4

E x t e r n a l

R C

E x t e r n a l

X T A L

M U X

f M

E x t e r n a l / X T A L / R C

C o n f i g u r a t i o n O p t i o n

H i g h O s c i l l a t o r

O S C 1

O S C 2

O S C 1

O S C 2

F i l t e r

E x t e r n a l C l o c k F i l t e r O f f

C o n f i g u r a t i o n O p t i o n

E x t e r n a l

C l o c k

O S C 1

Dual Clock Mode Structure

HT56R656 数据表(PDF) 85 Page - Holtek Semiconductor Inc

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HT56R656 数据表(PDF) 85 Page - Holtek Semiconductor Inc

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