Holtek HT46R47 - Page 88

Chapter 1 Hardware Structure
79
O S C 1
O S C 2
O S C
C i r c u i t
R E S
0 . 1
m
F
1 0 0 k
W
V D D
V S S
0 . 1
m
F
V
D D
0 . 0 1
m
F
1 0 k
W
H T 4 6 R 2 3 / H T 4 6 C 2 3
~
P B 0 / A N 0
P B 7 / A N 7
P A 0 ~ P A 2
P A 3 / P F D
P A 4 / T M R
P A 5 / I N T
P A 6 / S D A
P A 7 / S C L
P C 0 ~ P C 4
P D 0 / P W M 0
P D 1 / P W M 1
V
D D
R
O S C
f
S Y S
/ 4
O S C 1
O S C 2
4 7 0 p F
O S C 1
O S C 2
R 1
C 1
C 2
O S C C i r c u i t
F o r c o m p o n e n t v a l u e s ,
c o n s u l t O s c i l l a t o r s e c t i o n
S e e B e l o w
R C S y s t e m O s c i l l a t o r
3 0 k
W
< R
O S C
< 7 5 0 k
W
C r y s t a l S y s t e m O s c i l l a t o r