HT47R20 datasheet(26/42 Pages) HOLTEK

26 / 42 page

HT47R20

Rev. 1.10

2002-07-25

应用电路

Note:

C1=C2=300pF if fSYS<1MHz

Otherwise, C1=C2=0

O S C 1

O S C 2

P A 0 ~ P A 7

P B 0 ~ P B 3

f S Y S / 4 O p e n D r a i n

R C o s c i l l a t o r a p p l i c a t i o n

C r y s t a l o s c i l l a t o r a p p l i c a t i o n

H T 4 7 R 2 0

R E S

O S C 3

O S C 4

S E G 0 ~ 1 8

C O M 0 ~ 3

C 1

C 2

V 1

V 2

L C D

P A N E L

O S C 1

O S C 2

S E G 0 ~ 1 8

C O M 0 ~ 3

V L C D

C 1

C 2

V 1

V 2

L C D

P A N E L

L C D P o w e r

S u p p l y

L C D P o w e r

S u p p l y

V L C D

0 . 1 m .

3 2 7 6 8 H z C r y s t a l o s c i l l a t o r a p p l i c a t i o n

O S C 1

O S C 2

H T 4 7 R 2 0

O S C 3

O S C 4

S E G 0 ~ 1 8

C O M 0 ~ 3

V L C D

C 1

C 2

V 1

V 2

L C D

P A N E L

L C D P o w e r

S u p p l y

0 . 1 m .

O S C 3

O S C 4

H T 4 7 R 2 0

I N 0

C S 0

R S 0

C R T 0

R T 0

I N 1

C S 1

R S 1

R T 1

P A 0 ~ P A 7

P B 0 ~ P B 3

I N 0

C S 0

R S 0

C R T 0

R T 0

I N 1

C S 1

R S 1

R T 1

P A 0 ~ P A 7

P B 0 ~ P B 3

I N 0

C S 0

R S 0

C R T 0

R T 0

I N 1

C S 1

R S 1

R T 1

V D D

0 . 1 m .

1 0 0 k W

1 0 k W

V D D

2 4 k W ~ 1 M W

R E S

V D D

0 . 1 m .

1 0 0 k W

1 0 k W

R E S

V D D

0 . 1 m .

1 0 0 k W

1 0 k W

C 1

C 2

HT47R20 Datasheet(PDF) 26 Page - Holtek Semiconductor Inc

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