Rainbow Electronics HT49R70A-1 - Manual (Page 2)

Block Diagram
HT49R70A-1
Rev. 1.00 2 December 4, 2001
P r o g r a m
C o u n t e r
P r o g r a m
E P R O M
I n s t r u c t i o n
R e g i s t e r
I n s t r u c t i o n
D e c o d e r
T i m i n g
G e n e r a t i o n
O S C 2
O S C 4 O S C 1
R E S
V D D
V S S
O S C 3
I n t e r r u p t
C i r c u i t
I N T C
M P M
U
X
M U X
D A T A
M e m o r y
A L U
S h i f t e r
S T A T U S
A C C
P A
P O R T A
P A 0 / B Z
T M R 0 C
T M R 0
M
U
X
M
U
X
P B
P O R T B
P B 2 / T M R 0
W D T O S C
P A 1 / B Z
P A 2
P A 3 / P F D
P A 4 ~ P A 7
P B 0 / I N T 0
P B 1 / I N T 1
P B 3 / T M R 1
R T C O S C
O S C 3
O S C 4
R T C
S T A C K
L C D
M e m o r y
B P
L C D D R I V E R
C O M 0 ~
C O M 2 C O M 3 /
S E G 4 0 S E G 0 ~
S E G 3 9
T i m e B a s e
W D T
P C P C 0 ~ P C 7
P B 4 ~ P B 7
H A L T E N / D I S
L V D / L V R
T M R 1 C
T M R 1
M
U
X
P F D 0
P F D 1
P B 3 / T M R 1
T M R 0 O V
f S Y S
T i m e B a s e O u t
f
T 1 D
f S Y S / 4
f S Y S
R T C O u t
P B 2 / T M R 0
f S Y S / 4