HT45R37 datasheet(65/100 Pages) HOLTEK

65 / 100 page

HT45R37

Rev. 1.10

January 29, 2010

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 .

i f W D T i s e n a b l e d , f S U B = 3 2 K _ I N T , t h e n 3 2 K _ I N T 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 .

I f f S U B = 3 2 K _ I N T , t h e n 3 2 K _ I N T i s 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

3 2 7 6 8 H z

f S L

S l o w

C l o c k

C o n t r o l

E x t e r n a l

3 2 7 6 8 H z

C r y s t a l

3 2 K _ I N T

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

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

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

H i g h F r e q u e n c y O s c i l l a t o r

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

E x t e r n a l

C l o c k

O S C 1

f S L a n d f S U B

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

O p t i o n

I n t e r n a l

R C

S L O W C 0

S L O W C 1

S L O W C 2

Dual Clock Mode Structure

HT45R37 Datasheet(PDF) 65 Page - Holtek Semiconductor Inc

HT45R37 Datasheet(HTML) 65 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 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100

Datasheet Download

Link URL