Download Print this page

Hitachi MP-1802 Technical Manual page 24

Advertisement

2 1
H D 7 / + L S 1 6 1 P
( S y n c h r o n o u s 4 - B i t
B i n a r y
C o u n t e r ( l i r e c t
C l e a r )
F i g . 6 , 1 g i v e s t h e p i n
a r r a n g e m e n t , F i g . 6 . 2 t h e b l o c k
d i a g p a n a n d " - F i g . 6 , 3 t h e t i m i n g e h a r t .
F i g . 6 . 1
P i n A r r a n g e m e n t
F i g .
6 . 2
B l o c k D i a g r a m
;,.
Corrt Oufpul
o ^ )
I
o. l
> Oureufr
o c l
u )
. : . '
,j.
'
Ct.o.
Cl o€L
( A
I
I
l 8
m&. {
l c
I
' \ 0
Endb
P
GNO
T h i s p r e s e t t a b l - e
s y n c h r o n o u s
1 6 - d i g i t
c o u n t e r f e a t u r e s
a n
i n t e r n a l
e a r r y
l o o k - a h e a d
f o r
a p p l i e a t i - o n
i n h i g h
s p e e d
c o u n t i n g
d e s i g n s .
S y r c h r o n o u s o p e r a t i o n
i s
p r o v i d e d
b y h a v i n g a l l
f l i p -
f l o p s
c l o c k e d s i m u l t a n e o u s l y
s o t h a t
t h e o u t p u t
c h a n g e s
c o i c i d e n t
w i t h
e a c h o t h e r
w h e n s o i n s t r u c t e d
b y t h e
c o u n t - e n a b l - e i n p u t s a n d
i n t e r n a l -
g a t i n g .
T h j - s
m o d e o f o p e r a t i o n
e l i n i n a t e s
t h e o u t p u t
c o u n t i n g
s p i k e s
t h a t
a r e n o r m a l l y
a s s o c i - a t e d
F i e . 6 . 3
T i m e C h a r t
( n 6 p r e s e n t a t i v e
O p e r a t i o n
E x a r r p l e )
k
Lood
( a
I
ooro )
s
t+utr)
l c
L o
J1
€ncde t
( o ^
I
l O r
o.rwn1
l f t
L o
Cary
Chc
Pnrl
(t-oodl
. . . / 2 2

Hide quick links:

Advertisement

loading

This manual is also suitable for:

Mp-3550