AMSTRAD CPC664 - Function Diagrams

FUNCTION
DIAGRAMS
ICII4
Vcc
80
BD
ID
70 60
6D
50
50
m im m m m
itfi itti
m m
ENABLE
m
SNAB
0~B]
S
A
1 0£,
=c
Q D
3
]0E
D
51
s,
UliJliJliJIiJIiJLzJLiJliJlwj
OUTPUT
I a
ID
2D
28 3Q
3D
4D 40 GND
CONROL
ICIIS
Vcc
2G
IYI 2A4 IY2 2A3 IY3 2A2 IY4
2AI
\2o]
m
^mui]fif]ii4]m]U2]W]
n ww ill lAj lAj
Lil lAj lAj \l°j
IQ
IAI
2Y4 IA2
2Y3
IA3
2Y2
IA4 2YI
GND
10104.105 STROBE'A
\
DATA INPUTS
ICI09.II3
Vcc
2G
SELECT
V
OUTPUT
,2Y
\is\w\mmm\i\\\io
\^\
2C3 2C2 2CI
2C0
2Y
^
A
IC3
1C2
ICI ICO IY
llJ
LlJ
LiJ LiJ Lil LiJ Lil LiJ
STROBE
B
'
'OUTPUT
/G
SELECT DATA
INPUTS
IY
GND
ICIIO
VCC
4B
4A 4Y
3B
3A
3Y
m m m m m m rn
U \h L2J LU Lil Lil LU
IA IB
IY 2A 2B 2Y
GND
INPUTS
OUTPUTS
Vcc
A B
c
0'
A
i
r
w\w\mw\w\w\w\w\
j
A
B
C
D
BCD-TO-DECIMAL
3 Z 5 6 7
8'
i^jw^riJLTipipw
ICII2
Vcc 4B
4A
4Y
3B
3A 3Y
m
loi
[ei
m
noi
m m
U in LU
111 lil
LiJ LU
IA
IB
IY
2A
2B
2Y GND
ICIOS
VCC BB BD
ID 70
SO
6D
50 50
CLOCK
^[7<ni^i77iifin5i[Miroii<rif77i
A
CLEAR] I
\CLEAR\ {CLEAR
CK
CK
ti
\D_
y
n n.n.n
U LU
LU
LU Lil LU LU
LU Lil
CLEAR
IQ ID 2D 2Q
3Q
3D
4D
4Q
[10]
GND
VCC
6A 6Y 5A 5Y
4A
4Y
rJ4Ui3LliplJiOoU9Lf8L
,
WWW
1A
1Y
,2A
2Y
3A
3Y
GND