Application Circuits

HT46R22/HT46C22

Rev. 1.10

26

October 2, 2002

N o t e : T h e r e s i s t a n c e a n d c a p a c i t a n c e f o r r e s e t c i r c u i t s h o u l d b e d e s i g n e d

t o e n s u r e t h a t t h e V D D i s s t a b l e a n d r e m a i n s i n a v a l i d r a n g e o f t h e

o p e r a t i n g v o l t a g e b e f o r e b r i n g i n g R E S t o h i g h .

P D 0 / P W M

H T 4 6 R 2 2 /

H T 4 6 C 2 2

P C 0 ~ P C 1

P A 3 / P . D

P A 4 / T M R

P A 5 / I N T

O S C 1

O S C 2

O S C

C i r c u i t

S e e b e l o w

P A 6 / S D A

P A 7 / S C L

P B 0 / A N 0

P B 7 / A N 7

P A 0 ~ P A 2

O S C 1

O S C 2

R C s y s t e m o s c i l l a t o r

C r y s t a l s y s t e m o s c i l l a t o r

O t h e r w i s e , C 1 = C 2 = 0

O S C 1

O S C 2

C 2

C 1

4 7 0 p .

R E S

0 . 1 m .

1 0 0 k W

V D D

5 V

V S S

0 . 1 m .

1 0 k W