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-21 -
*1: On
account
of parts procurement situation, the TC40H138FN was used as a substitution of the
TC74HC138F
for some of CE-201M and CE-202M in earlier
productions.
When the
TC40H-
138FN on is in
failure,
either the TC40H138FN or TC74HC138F can be used as a
replacement.
But
when
the
TC74HC138F
is in use, it has to be replaced by the TC74HC138F, not the TC-
40H138FN which may impede proper operation due to variation in access time by the RAM chip
used.
TC74HC138F
(TC40H138FN)*l
.
.•
•
l.2MX3
.>
.
.
All
1
YO
p!li
(NU)
"
A
Al2
2
B
YT
~(NU)
Al3
t::);
3 c
Y2
~(NU)
o.;~F
DAN202
'-7
4_
G2A
Y8
~(NU)
II
GND'~
5~
G2B
Y4
..,11
l.2M
'
~
::'.:.10
Gl
Y5
YGG
8
GND
Y6
~
15598
16
YCC
Y7
t>-Z-
GND
~
A
DAN202
t::);
r
YCC
~·
-
Al3
B-J
~
)
R/W
4_,~·~
CR2025
r
AO
'-7
••
YGG
~
Al
+
I)
=
A2
ir~
.
A3
A4
.
A5
TC5517
AFL
x
4
l
A6
,,18
.
A7
'\
t
.
A8
CE
r
A9
AO
8
9
DO
~
=
~
i--------
,,.---
-
,----
-
~
;------,
AlO
Al
7
flQ.!U
c-
,,___
-
,____
-----..
~
r----.
.
All
A2
6
11
D2
r
,___
i--------
-
-
,____
-
~
>--------
Al2
A3
5
13D3
.
-----
-
-
c----
-
~
i------
.
Al3
A4
4
14D4
.
c-
,_____.._
-
-
c----
-
~
;------,
NC
A5
3
15D5
-----
,_____.._
-
-
I----
-
~
-
NC
A6
2
16D6
-
-
,____
-
~
-
c-
,__
NC
AL--1
17D7
,----
i------
c----
-
~
-
NC
A823
,----
c----
~
c-
NC
A922
,----
c----
~
v---
DO
AIO
19
~
Dl
,----
I----
~
!1_GND
YDD
~
-
,___
-
-
-
,___
D2
D3
OE
R/W
.,.. .....
D4
~o
o
(
\)
)
IJ
\)
')
21
-D5
>-
-
-''-
--
>- -
-''-
~-
>- -
_11_
-
-
,_ --
-: :-
t--
~D6
VGG
II
II
II
-D7
GND'
::: .....
RAMCE
r
NC
NC
.
OE
~
YGG
~l.2M
"'
CN-1
CN-2
CN-3
CN-4
CN-5
CN-6
CN-7
CN-8
CN-9
CN-10
CN-11
CN
-12
CN-13
CN-14
CN-15
c
._
16
CN-17
CN-18
CN-19
CN-20
ex
-21
CN-22
C:S-23
C\-24
Cl\-25
CX-26
cs-21
12.
CE-201M CIRCUIT DIAGRAM/PARTS LAYOUT CHART
(FLAT PACKAGE LSI)
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