Hitachi AP1 - Page 41

--------------------------------------------------------HMCS44C,HMCS44CL
• BLOCK DIAGRAM
AOM
2.048 x 10 bit
(program memory)
128x 10bit
(pattern memory)
i
PC (ll'bit)
<r
11
Stack Aegister
(4x 11 bit)
~
A B X
In.
SPX
IT
Timer/Counter
/
I
'rj
Interrupt
,
)
(NOTEl~
AS A4
r-----
, ~[
-,
:lJ
A,o
-A"
~J.
Instruction
Decoder
-
.. ~
-
Jj
~
...I
<
y
,,~
Spy
;ddressillll
'"--
e
0
AAM
'j
160 x4 bit
1
'2
iii~
[NOTE) A4 and AS of the HMCS44C
can
be used as genaral
purpose registen.
39
i[
~
-"-
Irr
"
:-
,
,
,
it'
,
,
,
,
,
,
,
,
,
r--
,
~l
,
:
,
,..::..:.:.:.:
-'
en
~
~
CD
CD
~
lii
L....
------,
,
,
,
,
- -- --'"
~
r;.:.- --
,
I
I
,
I
I
I
:S
I
I
I
~ I
,
~
,
;
I
I
0
,
,
,
,
I
: .....
,
it-----'
~
-
'~
-
i
-
-
B-
B
I/O Common
:f")
)
A,o
-A"
..I
-x
-
\
x
;:;
~
Do
0,
0,
0"
0,.
0"
Vee
GNO
~,
~
~
f--o
r--o
f-o
AESET
OSC,
OSC,
* Power-on Reset Circuit
(ACL) is not built in HMCS44CL,