HT45R37 datasheet(2/99 Pages) HOLTEK

2 / 99 page

Block Diagram

Pin Assignment

HT45R37

Rev. 1.00

June 25, 2009

O T P

P r o g r a m m i n g

C i r c u i t r y

W a t c h d o g

T i m e r

W a t c h d o g

T i m e r O s c i l l a t o r

8 - b i t

R I S C

M C U

C o r e

R e s e t

C i r c u i t

I n t e r r u p t

C o n t r o l l e r

E x t e r n a l

R C / C r y s t a l

O s c i l l a t o r

L o w

V o l t a g e

R e s e t

A / D

C o n v e r t e r

S t a c k

O T P

P r o g r a m

M e m o r y

R A M

D a t a

M e m o r y

P r o g r a m m a b l e

F r e q u e n c y

G e n e r a t o r

I 2 C / S P I

I / O

P o r t s

P W M

G e n e r a t o r

L o w

V o l t a g e

D e t e c t

E x t e r n a l R T C

O s c i l l a t o r

T i m e r s

I n t e r n a l R C

O s c i l l a t o r

C / R t o F

G e n e r a t o r

P B 3 / A N 3

P B 4 / A N 4

P B 5 / A N 5

P C 2 / O S C 2

P C 1 / O S C 1

V D D / A V D D

P C 0 / R E S

P A 7 / I N T 1 / S D O / R C 7

P A 6 / I N T 0 / S D I / S D A / R C 6

P A 5 / S C K / S C L / R C 5

P A 4 / T M R 1 / S C S / R C 4

P D 1 / P W M 1 / R C 9

H T 4 5 R 3 7

2 0 D I P - A / S O P - A

2 0

1 9

1 8

1 7

1 6

1 5

1 4

1 3

1 2

1 1

1 0

P B 1 / A N 1

P B 0 / A N 0

V S S / A V S S

C R E F

R R E F

R C O U T / I N

P A 0 / B Z / R C 0

P A 1 / B Z / R C 1

P A 2 / T M R 0 / R C 2

P A 3 / P F D / R C 3

P B 2 / A N 2

P B 3 / A N 3

P C 2 / O S C 2

P C 1 / O S C 1

V D D / A V D D

P C 0 / R E S

P A 7 / I N T 1 / S D O / R C 7

P A 6 / I N T 0 / S D I / S D A / R C 6

P A 5 / S C K / S C L / R C 5

P A 4 / T M R 1 / S C S / R C 4

2 4

2 3

2 2

2 1

2 0

1 9

1 8

1 7

1 6

1 5

1 4

1 3

1 0

1 1

1 2

H T 4 5 R 3 7

2 4 S K D I P - A / S O P - A

P B 2 / A N 2

P B 1 / A N 1

P B 0 / A N 0

V S S / A V S S

C R E F

R R E F

R C O U T / I N

P A 0 / B Z / R C 0

P A 1 / B Z / R C 1

P A 2 / T M R 0 / R C 2

P A 3 / P F D / R C 3

P D 0 / P W M 0 / R C 8

P C 2 / O S C 2

P C 1 / O S C 1

V D D / A V D D

P C 0 / R E S

P A 7 / I N T 1 / S D O / R C 7

P A 6 / I N T 0 / S D I / S D A / R C 6

P A 5 / S C K / S C L / R C 5

P A 4 / T M R 1 / S C S / R C 4

H T 4 5 R 3 7

3 2 Q F N - A

9 1 0 1 1 1 2 1 3 1 4 1 5 1 6

1 7

1 8

1 9

2 0

2 1

2 2

2 3

2 4

2 5

2 6

2 7

2 8

2 9

3 0

3 1

3 2

V S S / A V S S

C R E F

R R E F

R C O U T / I N

P A 0 / B Z / R C 0

P A 1 / B Z / R C 1

P A 2 / T M R 0 / R C 2

P A 3 / P F D / R C 3

P B 1 / A N 1

P C 3 / O S C 3

P C 4 / O S C 4

P C 2 / O S C 2

P C 1 / O S C 1

V D D / A V D D

P C 0 / R E S

P A 7 / I N T 1 / S D O / R C 7

P A 6 / I N T 0 / S D I / S D A / R C 6

P A 5 / S C K / S C L / R C 5

P A 4 / T M R 1 / S C S / R C 4

P D 7 / P C L K / R C 1 5

P D 6 / P I N T / R C 1 4

P D 5 / R C 1 3

H T 4 5 R 3 7 - B

2 8 S K D I P - B / S O P - B / S S O P - B

2 8

2 7

2 6

2 5

2 4

2 3

2 2

2 1

2 0

1 9

1 8

1 7

1 6

1 5

1 0

1 1

1 2

1 3

1 4

P B 0 / A N 0

V S S / A V S S

C R E F

R R E F

R C O U T / I N

P A 0 / B Z / R C 0

P A 1 / B Z / R C 1

P A 2 / T M R 0 / R C 2

P A 3 / P F D / R C 3

P D 0 / P W M 0 / R C 8

P D 1 / P W M 1 / R C 9

P D 2 / R C 1 0

P D 3 / R C 1 1

P D 4 / R C 1 2

P B 4 / A N 4

P B 5 / A N 5

P C 3 / O S C 3

P C 4 / O S C 4

P C 2 / O S C 2

P C 1 / O S C 1

V D D / A V D D

P C 0 / R E S

P A 7 / I N T 1 / S D O / R C 7

P A 6 / I N T 0 / S D I / S D A / R C 6

P A 5 / S C K / S C L / R C 5

P A 4 / T M R 1 / S C S / R C 4

P D 7 / P C L K / R C 1 5

P D 6 / P I N T / R C 1 4

H T 4 5 R 3 7 - A

2 8 S K D I P - A / S O P - A / S S O P - A

2 8

2 7

2 6

2 5

2 4

2 3

2 2

2 1

2 0

1 9

1 8

1 7

1 6

1 5

1 0

1 1

1 2

1 3

1 4

P B 3 / A N 3

P B 2 / A N 2

P B 1 / A N 1

P B 0 / A N 0

V S S / A V S S

C R E F

R R E F

R C O U T / I N

P A 0 / B Z / R C 0

P A 1 / B Z / R C 1

P A 2 / T M R 0 / R C 2

P A 3 / P F D / R C 3

P D 0 / P W M 0 / R C 8

P D 1 / P W M 1 / R C 9

HT45R37 Datasheet(PDF) 2 Page - Holtek Semiconductor Inc

HT45R37 Datasheet(HTML) 2 Page - Holtek Semiconductor Inc

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